CN107568155B - Method for cultivating first paternal line of chinchilla - Google Patents
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Abstract
The invention discloses a method for cultivating a first paternal line of a Chinese bamboo rat, which comprises the following steps: s1, determining the standard weight range X of the female bamboo rat1‑X2Standard body weight range of male bamboo rats Y1‑Y2(ii) a S2, selecting N weight in Y1‑Y2Male bamboo rat, 3N body weights in X1‑X2Establishing N families of female bamboo rats; s3, performing generation breeding on the N families, counting the reproductive performance I of each family, sequencing the families according to the reproductive performance I, selecting N male bamboo rats and 3N female bamboo rats in the families with the reproductive performance I ranked in a set range, and establishing N families; and S4, repeating the step S3 until the reproductive performance I of the bamboo rats in the same generation is higher than a set threshold, wherein the male parent of the generation is the first paternal line. The invention better coordinates the contradiction of the highly negative correlation characters of the weight and the reproductive performance of the male bamboo rat, provides a first father line for the production of the matched line of the bamboo rat and improves the economic benefit.
Description
Technical Field
The invention relates to the field of bamboo rat cultivation. More specifically, the invention relates to a method for breeding a first paternal line of a Chinese bamboo rat.
Background
The bamboo rat body is big and has more meat, the taste is delicious, the nutrition is rich, the fur is thick and soft, and the economic value and the medicinal value are higher. At present, the method is cultivated in a large scale and becomes one of cultivation industries with greater economic benefits.
At present, the breeding technology of bamboo rats is not perfect enough, and the problems of low reproductive performance and small litter size of the bamboo rats generally exist, so that the problems of high cost, low benefit and high risk exist in bamboo rat breeding. Moreover, the weight and the reproductive performance of the bamboo rat are highly genetic and negatively correlated, if the weight of the bamboo rat is pursued for slaughtering, the reproductive performance of the bamboo rat is reduced, if the weight of the bamboo rat is pursued for breeding, the weight of the bamboo rat is too low, further, the weight is too low, although the litter size can be relatively improved, the litter size is low, and how to select the bamboo rat with high litter size and high survival rate is a problem which needs to be solved urgently at present.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a method for cultivating the first paternal line of the Chinese bamboo rat, which better coordinates the contradiction of highly negative correlation properties of the weight and reproductive performance of the bamboo rat, provides the first paternal line for the production of the matched line of the bamboo rat and improves the economic benefit.
To achieve these objects and other advantages in accordance with the present invention, there is provided a method for breeding a first paternal line of chinchilla, comprising the steps of:
s1, determining the standard weight range of the female bamboo rat as X1-X2And determining the standard weight range of the male bamboo rat as Y1-Y2；
S2, selecting N weights at Y1-Y2Male bamboo rat, 3N body weights were located at X1-X2Establishing N families of female bamboo rats according to each family including 1 male bamboo rat and 3 female bamboo rats, wherein N is more than or equal to 60;
s3, performing generation breeding on the N established families, counting the reproductive performance I of each family, sequencing the families according to the reproductive performance I, selecting N male bamboo rats and 3N female bamboo rats in the families with the reproductive performance I ranked in a set range, and establishing N families;
s4, repeating the step S3 until the reproductive performance I of the bamboo rats in the same generation is higher than a set threshold, wherein the male parent of the generation is the first paternal line;
wherein, the bamboo rats of each family have no relationship of blood relativity.
Preferably, the standard weight range X of the female bamboo rat is determined in the step S11-X2The specific method comprises the following steps: the minimum weight is 1.225KgThe weight of each weight level is increased by 50g to be the highest weight of 1.525Kg, at least 20 female bamboo rats are selected for each weight level and are respectively bred with male bamboo rats with the weight of 1.49-1.51Kg, the reproductive performance II of the female bamboo rats of each weight level is counted, and the weight level with the optimal reproductive performance II is the standard weight range X of the female bamboo rats1-X2；
Determining the standard weight range Y of male bamboo rats1-Y2The specific method comprises the following steps: selecting the body weight to be X1-X2Dividing the female bamboo rats in the range into five groups, wherein each group comprises at least 20 female bamboo rats, each group of female bamboo rats is respectively bred with male bamboo rats with certain weight in a matching way, the weight ratio of the five groups of female bamboo rats to the male bamboo rats bred in the matching way is respectively 1:1.1, 1:1.15, 1:1.2, 1:1.25 and 1:1.3, counting the weight of adult offspring of each group of female bamboo rats, calculating the weight uniformity of the adult offspring of each group of female bamboo rats, and the weight range of the male bamboo rat corresponding to the person with the highest weight uniformity is the standard weight range Y of the male bamboo rats1-Y2。
Preferably, the range set in step S3 is the top 50%.
Preferably, the reproductive performance ii of each weight-graded female bamboo rat in step S1 is evaluated by the average number of litters per year, the average annual slaughter rate, and the average annual survival rate of the weight-graded female bamboo rat, wherein the weight of the average number of litters per year, the average annual litter number, the average annual slaughter rate, and the average annual survival rate is 0.126, 0.069, 0.414, and 0.391, respectively.
Preferably, in step S3, the breeding performance i of a family is evaluated by using the number of adult offspring of the family with weight up to standard and the survival rate as evaluation factors, and the weight of the number of adult offspring with weight up to standard and the weight of the survival rate are 0.149 and 0.851, respectively;
in the step S3, the N male bamboo rats and the 3N female bamboo rats in the family with the reproductive performance I ranked within the set range are selected as the ones with the weight reaching the standard, and the weight of the female bamboo rats is X1-X2The weight of the male bamboo rat reaches the standard within the range, and the weight of the male bamboo rat is Y1-Y2The weight reaches the standard within the range;
and S4, repeating the step S3 until the number of adult offspring of the bamboo rat in the same generation reaching the standard weight and the survival rate are respectively higher than the first threshold and the second threshold.
Preferably, the breeding farm in the step S3 for a generation includes:
the inner enclosure comprises N fixed rods which are fixed annularly at equal intervals, an inner baffle is arranged between any two adjacent fixed rods in a pulling and clamping manner, and the N inner baffles are enclosed to form a central movable area;
the peripheral baffle is circumferentially sleeved outside the inner baffle to form a peripheral movable area, and a middle baffle can be pulled and clamped between each fixed rod and the peripheral baffle so as to form N culture ponds between the inner baffle and the peripheral baffle;
in the breeding process, the temperature in a breeding farm is kept at 25-28 ℃, the relative humidity is kept at 45-50%, and the method specifically comprises the following steps:
a. male bamboo rats of the first N families are bred in a central activity area, and fed with a first feed, wherein the first feed comprises the following components in parts by weight: 20-25 parts of basic feed, 8-10 parts of Chinese chives, 1-2 parts of shell powder, 4-5 parts of shrimp meal and 5-8 parts of walnuts, wherein female bamboo rats of N families are placed in a peripheral activity area for feeding, and the second feed comprises the following components in parts by weight: 20-25 parts of basic feed, 4-5 parts of spinach, 6-8 parts of carrot, 8-10 parts of pomegranate seed powder and 4-5 parts of almond;
b. in the breeding, a family is arranged in a breeding pond for natural mating, male bamboo rats are removed after breeding, female bamboo rats in the same family are independently raised until young rats are born, and a second feed is fed;
c. feeding the young mice with a third feed from birth to weaning, wherein the third feed comprises the following components in parts by weight: 20-25 parts of basic feed, 4-5 parts of sweet potato vine, 3-4 parts of corn kernels in milk stage, 5-6 parts of water chestnut and 6-8 parts of watermelon peel;
d. pulling out N internal baffles and N middle baffles after weaning of the young mice, carrying out mixed feeding for 25-30 days, and feeding a fourth feed, wherein the fourth feed comprises the following components in parts by weight: 20-25 parts of basic feed, 3-4 parts of cassava, 3-4 parts of couchgrass root, 1-2 parts of maple root and 5-6 parts of reed, then removing female bamboo rats, and mixing and feeding the offspring of N families until the adult;
wherein, the basic feed comprises the following components by weight: 30-40 parts of bamboo leaves, 20-25 parts of bamboo shoots, 15-20 parts of corn stalks, 20-25 parts of sweet potato powder and 10-15 parts of rice bran.
Preferably, the inner barrier is a mesh plate.
The invention at least comprises the following beneficial effects:
firstly, a family breeding method is adopted to eliminate bamboo rats with low reproductive performance, the contradiction of the weight and the reproductive performance of the bamboo rats with high negative correlation characters is well coordinated, a first paternal line is provided for the production of a bamboo rat matched line, the breeding efficiency of the bamboo rats for planting is improved through the bred first paternal line, the number (only) of adult offspring with the weight reaching the standard is obviously improved through breeding for several generations, the survival rate (%) is obviously improved, and the economic benefit of bamboo rat breeding is improved.
Secondly, the arrangement of the breeding farm, the inner baffle is arranged to be a reticular plate, the bamboo rats which are to be combined into a family are substantially separated before being paired, but not separated mentally, enough phase time is provided for the bamboo rats of the family, the pairing success rate is improved, in the whole breeding and breeding period, the living environment of female bamboo rats is not moved and is not changed, the interference of external factors is effectively avoided and reduced, the accuracy rate of the whole experiment is enhanced, meanwhile, the arrangement of the inner baffle and the middle baffle greatly reduces the workload in the whole breeding and breeding process, different feeds are provided for the bamboo rats according to different growth and development of the bamboo rats in different time-sharing periods, the breeding of the bamboo rats according to the set target direction is promoted, and meanwhile, the accuracy and the stability of the whole detection are enhanced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
< example 1>
A method for cultivating a first paternal line of a Chinese bamboo rat comprises the following steps:
s1, determining the standard weight range of the female bamboo rat as X1-X2(the selected female bamboo rat and male bamboo rat are pure breeding Chinese bamboo rat):
respectively obtaining six weight levels of a weight level I (1.225Kg-1.275Kg), a weight level II (1.275Kg-1.325Kg), a weight level III (1.325Kg-1.375Kg), a weight level IV (1.375Kg-1.425Kg), a weight level V (1.425Kg-1.475Kg) and a weight level VI (1.475Kg-1.525Kg) by taking 1.225Kg as the lowest weight, and increasing the weight by 50g to 1.525Kg, wherein each weight level comprises the minimum weight in the weight level range and does not comprise the highest weight in the weight level range, each weight level selects 20 female bamboo rats which are bred with male bamboo rats with the weight of 1.49-1.51Kg, and the average number (only), the average number (nest average number (only), the average number (only nest number) and the average number (only) of young animals in each weight level are counted, The average annual percentage (%) and the average annual survival rate (%) are shown in table 1:
TABLE 1
Reproductive performance of female bamboo rats per weight class II (W)2) Taking the average nest number A, average nest litter number B, average slaughter rate C and average survival rate D of the female bamboo rats with the weight hierarchy as evaluation factors, wherein the weights of the average nest number, average nest litter number, average slaughter rate C and average survival rate D are 0.126, 0.069, 0.414 and 0.391 respectively, and then W is2W to calculate reproductive performance II on a weight scale IV (1.375Kg to 1.425Kg) of 0.126A +0.069B +0.414C +0.391D2The highest weight level is the optimal weight level, namely the standard weight range of the female bamboo rat is 1.375Kg-1.425Kg, and according to the table 1, the female bamboo rat has the average litter size (only) per year and the average farrowing per year along with the increase of the weightThe number (only), the annual average slaughter rate (%), and the annual average survival rate (%) all showed 1 process of increasing first and then decreasing, and reached the optimum values at the weight level IV, and the weights of the annual average litter size, annual average litter survival rate, annual slaughter rate, and annual survival rate were set according to their data characteristics such that each evaluation factor accounted for reproductive performance II (W) by its own data characteristics2) The specific gravities are approximately equal, and the detection accuracy is improved;
determining the standard weight range Y of male bamboo rats1-Y2(the selected female bamboo rat and male bamboo rat are pure breeding Chinese bamboo rat);
selecting female bamboo rats with the weight within the range of 1.375Kg-1.425Kg into five groups, dividing each group into 20 female bamboo rats, breeding each group of female bamboo rats with male bamboo rats with certain weight in a matched manner, wherein the weight ratio of the five groups of female bamboo rats to the male bamboo rats bred in the matched manner is respectively 1:1.1, 1:1.15, 1:1.2, 1:1.25 and 1:1.3, namely the weight ranges of the male bamboo rats respectively matched with 5 groups of female bamboo rats (the end points are approximate values of rounding five, and the maximum weight in the weight range is included in each weight range but not included in the weight range) is 1.51Kg-1.57Kg, 1.58Kg-1.64Kg, 1.65Kg-1.71Kg, 1.72Kg-1.78Kg and 1.79Kg-1.85Kg, counting the offspring of each group (the weight of the offspring of the adult offspring is the offspring with mature offspring characteristic, namely the adult offspring of the adult bamboo rats with the adult offspring having the adult offspring structure of the adult offspring), calculating the weight uniformity of each group of adult female bamboo rat offspring, and calculating the weight range of the male bamboo rat corresponding to the person with the highest weight uniformity, wherein the weight uniformity of the adult female bamboo rat offspring is the highest when the weight ratio of the female bamboo rat to the male bamboo rat is 1:1.2, namely the weight range of the male bamboo rat is 1.65Kg-1.71Kg, namely the standard weight range of the male bamboo rat is 1.65Kg-1.71Kg, wherein the weight uniformity is calculated in a conventional calculation mode;
s2, selecting 60 male bamboo rats with the weight within 1.65Kg-1.71Kg and 180 female bamboo rats with the weight within 1.375Kg-1.425Kg, and establishing 60 families according to the fact that each family comprises 1 male bamboo rat and 3 female bamboo rats;
s3, alignment constructionBreeding 60 families in one generation, and counting the reproductive performance I (W) of each family1) The reproductive performance I takes the weight standard number E and the survival rate F of the adult offspring of the family as evaluation factors, and the weight standard number E and the weight of the survival rate F are respectively 0.149 and 0.851, then W10.149E +0.851F and according to reproductive performance IW1Sorting the families according to the size, selecting 60 male bamboo rats and 180 female bamboo rats in the families with the reproductive performance I ranked in the top 50%, and establishing 60 families, wherein the 60 male bamboo rats and the 180 female bamboo rats in the families with the reproductive performance I ranked in a set range are both weight-up persons, the weight of the female bamboo rats reaches the weight-up persons within the range of 1.375Kg-1.425Kg, and the weight of the male bamboo rats reaches the weight-up persons within the range of 1.65Kg-1.71 Kg;
s4, repeating the step S3 until the number of adult offspring of the same generation of bamboo rats with weight reaching the standard and the survival rate are respectively higher than a first threshold and a second threshold, wherein the male parent of the generation is the first paternal line, and the first threshold and the second threshold are determined according to the requirements of enterprises;
wherein, the male parent and the female parent of each bamboo rat of each family have no blood relativity.
< example 2>
A method for cultivating a first paternal line of a Chinese bamboo rat comprises the following steps:
s1, determining the standard weight range of the female bamboo rat as X1-X2And determining the standard weight range Y of male bamboo rat1-Y2Wherein X is1-X2And Y is1-Y2The determination of (A) is based on the data determined in example 1, namely X1-X21.375Kg to 1.425Kg, Y1-Y21.65Kg to 1.71 Kg;
s2, selecting 60 male bamboo rats with the weight within 1.65Kg-1.71Kg and 180 female bamboo rats with the weight within 1.375Kg-1.425Kg, and establishing 60 families according to the fact that each family comprises 1 male bamboo rat and 3 female bamboo rats;
s3, carrying out generation breeding on the 60 established families, and counting the reproductive performance I (W) of each family1) The reproductive performance I takes the weight standard number E and the survival rate F of the adult offspring of the family as evaluation factors, and the weight standard number E and the weight of the survival rate F are respectively 0.149 and 0.851, then W10.149E +0.851F and according to reproductive performance IW1Sorting the families according to the size, selecting 60 male bamboo rats and 180 female bamboo rats in the families with the reproductive performance I ranked in the top 50%, and establishing 60 families, wherein the 60 male bamboo rats and the 180 female bamboo rats in the families with the reproductive performance I ranked in a set range are both weight-up persons, the weight of the female bamboo rats reaches the weight-up persons within the range of 1.375Kg-1.425Kg, and the weight of the male bamboo rats reaches the weight-up persons within the range of 1.65Kg-1.71 Kg;
s4, repeating the step S3 until the number of adult offspring of the same generation of bamboo rats with weight reaching the standard and the survival rate are respectively higher than a first threshold and a second threshold, wherein the male parent of the generation is the first paternal line, and the first threshold and the second threshold are determined according to the requirements of enterprises;
wherein, the male parent and the female parent of each bamboo rat of each family have no blood relationship;
in step S3, the breeding process for a generation is performed in a farm, and the farm includes:
the inner baffle comprises 60 fixed rods which are fixed annularly at equal intervals, and an inner baffle plate can be arranged between any two adjacent fixed rods in a pulling and clamping manner, wherein any one fixed rod is close to two sides of the adjacent fixed rods on the two sides and is vertically provided with a clamping groove, clamping strips matched with the clamping grooves are arranged on two end sides of the inner baffle plate, so that the inner baffle plate can be arranged between any two adjacent fixed rods in a pulling and clamping manner, and 60 inner baffle plates are arranged in a surrounding manner to form a central movable area;
the peripheral baffle is circumferentially sleeved outside the inner baffle to form a peripheral movable area, a middle baffle is arranged between each fixed rod and the peripheral baffle in a pulling and clamping mode so as to form 60 culture ponds between the inner baffle and the peripheral baffle, a clamping groove is vertically arranged on one side, close to the peripheral baffle, of each fixed rod, clamping grooves are also arranged at the positions, opposite to the clamping grooves of the fixed rods, of the peripheral baffle, clamping strips matched with the clamping grooves are arranged on two end sides of the middle baffle, so that the middle baffle can be arranged between the fixed rods and the peripheral baffle in a pulling and clamping mode, and 60 culture ponds are formed between the inner baffle and the peripheral baffle in an equally dividing mode;
in the breeding process, the temperature in a farm is kept between 25 and 28 ℃, and the relative humidity is kept between 45 and 50 percent, and the method specifically comprises the following steps:
a. before the mating, interior fender and the peripheral fender of enclosing do not set up well baffle between, 60 interior baffles enclose to establish and form central active area to make whole plant include central active area and peripheral active area, the male bamboo rat (60) of 60 families place central active area and raise, feed first fodder, and according to weight component, first fodder includes: 25 parts of basic feed, 8 parts of Chinese chives, 1 part of shell powder, 4 parts of shrimp meal and 5 parts of walnuts, wherein 60 female bamboo rats (180) of families are placed in a peripheral activity area for feeding, and the second feed comprises the following components in parts by weight: 20 parts of basic feed, 4 parts of spinach, 6 parts of carrot, 8 parts of pomegranate seed powder and 4 parts of almond;
b. when preparing for breeding, arranging middle baffles between the inner surrounding baffle and the outer surrounding baffle to form 60 breeding ponds between the inner surrounding baffle and the outer surrounding baffle, arranging a family in one breeding pond during breeding for natural mating, removing male bamboo rats after breeding, independently breeding the female bamboo rats of the same family until the young rats are born, and feeding second feed during the breeding until the young rats are born;
c. feeding female bamboo rats with a third feed from birth to weaning of the young rats, wherein the third feed comprises the following components in parts by weight: 20 parts of basic feed, 4 parts of sweet potato vine, 4 parts of corn kernels in the milk stage, 5 parts of water chestnut and 8 parts of watermelon peel;
d. pulling out 60 internal baffles and 60 middle baffles after weaning of young mice, feeding female bamboo rats and the young mice for 30 days in a mixed mode, and feeding a fourth feed, wherein the fourth feed comprises the following components in parts by weight: 23 parts of basic feed, 4 parts of cassava, 4 parts of couch grass root, 1 part of maple root and 6 parts of reed, then removing female bamboo rats, mixing and feeding 60 families of offspring until the adult, and feeding a fourth feed in the period;
wherein, the basic feed comprises the following components by weight: 40 parts of bamboo leaves, 20 parts of bamboo shoots, 20 parts of corn stalks, 25 parts of sweet potato powder and 10 parts of rice bran; the inner baffle is a reticular plate;
the shrimp meal is powder formed by grinding dried shrimps, spinach and carrots in the second feed are fresh food materials, and sweet potato vines, corn kernels in the milk stage, water chestnuts and watermelon peels in the third feed are fresh food materials.
Examples 1 and 2 were both carried out in the bamboo rat farm of Guangxi Jincheng Shuangfeng farming-grazing technology, Ltd., and the cultivation results are shown in tables 1 and 2, respectively:
TABLE 1
| Generation number | Number of adult offspring up to standard | Survival rate (%) |
| 0 generation | 316 | 96.8 |
| Generation 1 | 320 | 97.2 |
| Generation 2 | 323 | 97.5 |
| 3 generation | 327 | 97.9 |
TABLE 2
| Generation number | Number of adult offspring up to standard | Survival rate (%) |
| 0 generation | 322 | 97.0 |
| Generation 1 | 326 | 97.5 |
| Generation 2 | 330 | 98.1 |
| 3 generation | 335 | 98.9 |
As can be seen from tables 1 and 2, after 4 generations of breeding, the survival rates of the offspring of the female bamboo rat and the male bamboo rat are obviously improved, the number of the adult offspring with the weight reaching the standard (only) is increased, and the breeding effect is further improved when diet is controlled.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (4)
1. A method for cultivating a first paternal line of a Chinese bamboo rat is characterized by comprising the following steps:
s1, determining the standard weight range of the female bamboo rat as X1-X2And determining the standard weight range of the male bamboo rat as Y1-Y2；
S2, selecting N weights at Y1-Y2Male bamboo rat, 3N body weights were located at X1-X2Establishing N families of female bamboo rats according to each family including 1 male bamboo rat and 3 female bamboo rats, wherein N is more than or equal to 60;
s3, performing generation breeding on the N established families, counting the reproductive performance I of each family, sequencing the families according to the reproductive performance I, selecting N male bamboo rats and 3N female bamboo rats in the families with the reproductive performance I ranked in a set range, and establishing N families;
s4, repeating the step S3 until the reproductive performance I of the bamboo rats in the same generation is higher than a set threshold, wherein the male parent of the generation is the first paternal line;
wherein, each bamboo rat of each family has no blood affinity;
determining the standard weight range X of the female bamboo rat in the step S11-X2The specific method comprises the following steps: taking 1.225Kg as the lowest weight, taking a weight level of 50g per weight increase to 1.525Kg as the highest weight, selecting at least 20 female bamboo rats in each weight level, breeding the female bamboo rats with the weight within the range of 1.49-1.51Kg respectively, counting the reproductive performance II of the female bamboo rats in each weight level, and obtaining the weight level with the optimal reproductive performance II, namely the standard weight range X of the female bamboo rats1-X2；
Determining the standard weight range Y of male bamboo rats1-Y2The specific method comprises the following steps: selecting the body weight to be X1-X2Dividing the female bamboo rats in the range into five groups, wherein each group comprises at least 20 female bamboo rats, each group of female bamboo rats is respectively bred with male bamboo rats with certain weight in a pairing way, and five groups of female bamboo rats are respectively bred with the male bamboo rats with certain weightThe body weight ratio of the male bamboo rats bred in a pairing mode is 1:1.1, 1:1.15, 1:1.2, 1:1.25 and 1:1.3 respectively, the weight of adult offspring of each group of female bamboo rats is counted, the weight uniformity of the adult offspring of each group of female bamboo rats is calculated, the weight range of the male bamboo rat corresponding to the person with the highest weight uniformity is the standard weight range Y of the male bamboo rat1-Y2；
In step S1, the reproductive performance ii of each weight-level female bamboo rat is evaluated by using the average nest number per year, the average nest litter size per year, the average slaughter rate per year, and the average survival rate per year of the weight-level female bamboo rat as evaluation factors, wherein the weights of the average nest number per year, the average nest litter size per year, the average slaughter rate per year, and the average survival rate per year are 0.126, 0.069, 0.414, and 0.391, respectively;
in step S3, the reproductive performance I of a family is evaluated by taking the weight number of the adult offspring of the family reaching the standard and the survival rate as evaluation factors, and the weight of the weight number of the adult offspring reaching the standard and the weight of the survival rate of the adult offspring reaching the standard are respectively 0.149 and 0.851;
in the step S3, the N male bamboo rats and the 3N female bamboo rats in the family with the reproductive performance I ranked within the set range are selected as the ones with the weight reaching the standard, and the weight of the female bamboo rats is X1-X2The weight of the male bamboo rat reaches the standard within the range, and the weight of the male bamboo rat is Y1-Y2The weight reaches the standard within the range;
and S4, repeating the step S3 until the number of adult offspring of the bamboo rat of the same generation with the standard weight and the survival rate are respectively higher than a first threshold and a second threshold, wherein the first threshold and the second threshold are determined according to the requirements of enterprises.
2. The method of claim 1, wherein the range set in step S3 is the first 50%.
3. The method of claim 2, wherein the breeding farm for breeding a generation in step S3 comprises:
the inner enclosure comprises N fixed rods which are fixed annularly at equal intervals, an inner baffle is arranged between any two adjacent fixed rods in a pulling and clamping manner, and the N inner baffles are enclosed to form a central movable area;
the peripheral baffle is circumferentially sleeved outside the inner baffle to form a peripheral movable area, and a middle baffle can be pulled and clamped between each fixed rod and the peripheral baffle so as to form N culture ponds between the inner baffle and the peripheral baffle;
in the breeding process, the temperature in a breeding farm is kept at 25-28 ℃, the relative humidity is kept at 45-50%, and the method specifically comprises the following steps:
a. male bamboo rats of the first N families are bred in a central activity area, and fed with a first feed, wherein the first feed comprises the following components in parts by weight: 20-25 parts of basic feed, 8-10 parts of Chinese chives, 1-2 parts of shell powder, 4-5 parts of shrimp meal and 5-8 parts of walnuts, wherein female bamboo rats of N families are placed in a peripheral activity area for feeding, and the second feed comprises the following components in parts by weight: 20-25 parts of basic feed, 4-5 parts of spinach, 6-8 parts of carrot, 8-10 parts of pomegranate seed powder and 4-5 parts of almond;
b. in the breeding, a family is arranged in a breeding pond for natural mating, male bamboo rats are removed after breeding, female bamboo rats in the same family are independently raised until young rats are born, and a second feed is fed;
c. feeding the young mice with a third feed from birth to weaning, wherein the third feed comprises the following components in parts by weight: 20-25 parts of basic feed, 4-5 parts of sweet potato vine, 3-4 parts of corn kernels in milk stage, 5-6 parts of water chestnut and 6-8 parts of watermelon peel;
d. pulling out N internal baffles and N middle baffles after weaning of the young mice, carrying out mixed feeding for 25-30 days, and feeding a fourth feed, wherein the fourth feed comprises the following components in parts by weight: 20-25 parts of basic feed, 3-4 parts of cassava, 3-4 parts of couchgrass root, 1-2 parts of maple root and 5-6 parts of reed, then removing female bamboo rats, and mixing and feeding the offspring of N families until the adult;
wherein, the basic feed comprises the following components by weight: 30-40 parts of bamboo leaves, 20-25 parts of bamboo shoots, 15-20 parts of corn stalks, 20-25 parts of sweet potato powder and 10-15 parts of rice bran.
4. The method of claim 3, wherein the internal baffle is a mesh plate.
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| EP1364056A2 (en) * | 2000-12-01 | 2003-11-26 | University Of North Carolina At Chapel Hill | Method for ultra-high resolution mapping of genes and determination of genetic networks among genes underlying phenotypic traits |
| CN103250681A (en) * | 2013-05-31 | 2013-08-21 | 长沙诚力生物科技有限公司 | Artificial culture method of bamboo rats |
| CN104938422A (en) * | 2014-03-28 | 2015-09-30 | 蒙敏华 | Hybridization cultivation method for bamboo rats |
| CN104351131A (en) * | 2014-10-17 | 2015-02-18 | 何兵 | Secondary breeding method for bamboo rat culture |
| CN105981690B (en) * | 2015-01-28 | 2019-03-15 | 德阳景程禽业有限责任公司 | A kind of meat goose selection |
| CN106386688A (en) * | 2016-10-12 | 2017-02-15 | 重庆市畜牧科学院 | Female parent line breeding method for meat goose complete set line |
| CN106719373A (en) * | 2016-11-30 | 2017-05-31 | 南宁市浩特竹鼠养殖场 | A kind of bamboo rat cultural method |
| CN107114309B (en) * | 2017-04-12 | 2020-03-10 | 广西金陵农牧集团有限公司 | Breeding method of Jinling Ma-Wu chicken complete line |
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