CN103270981A - Casting feeding method for breeding young grass carps - Google Patents
Casting feeding method for breeding young grass carps Download PDFInfo
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- CN103270981A CN103270981A CN2013101657092A CN201310165709A CN103270981A CN 103270981 A CN103270981 A CN 103270981A CN 2013101657092 A CN2013101657092 A CN 2013101657092A CN 201310165709 A CN201310165709 A CN 201310165709A CN 103270981 A CN103270981 A CN 103270981A
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- grass carps
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- something
- feed
- feeding method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention relates to a casting feeding method for breeding young grass carps. The casting feeding method comprises the step of casting feeding according to conventional feeding time and conventional modes every day and is characterized in that the number of casting feeding days in each week is changed, namely, the young grass carps are enabled to be hungry for 1-2 days in one week, are fed in a casting mode in the remaining days of the week, and are fed according to the method in a circulation mode. According to the method, hunger stress, with proper strength, suitable for the young grass carps is made artificially, potential compensation growth capacity of the grass carps is stimulated continuously through intermittent hunger stress, grass carp feed conversion efficiency is promoted to be improved, and the purpose of reducing feed cost is achieved on the pretext that weight increasing of fish bodies is not influenced.
Description
Technical field
The present invention relates to the optimization cultural technique of young grass carps, particularly relate to a kind of feeding method for the young grass carps breed.
Background technology
Grass carp (
Ctenopharyngodon idellus) belong to Cypriniformes, Cyprinidae, the graining subfamily, grass carp belongs to, and is distributed widely in the flat area of China except Xinjiang and Qinghai-Tibet Platean, is the important economic freshwater cultured fishes of China, has migrated to many countries in Asia, Europe, the United States, non-each continent.At present, grass carp the year of China cultured output surpass 4,000,000 tons, output is the highest in large fresh-water fishes of the manufactured feed of ingesting.Will consume a large amount of manufactured feeds aborning every year and raise grass carp, therefore, the utilization ratio, the saving feed cost that improve feed are important research project.Most research at present is primarily aimed at and improves feed itself, as using novel material, develops various additives etc., and the research that the change by the pattern of throwing something and feeding reduces the feed of grass carp cost is unusual shortage then.Because fish generally have the characteristics of compensatory growth, namely, fish are after being coerced by hunger, oligotrophy or other unsuitable environmental condition, if coerce disappearance, in a period of time fish can by improve feed efficiency or (with) grazing rate obtains the growth rate above unscared normal individual.As seen, can seek the suitable mode of coercing and coercive intensity and promote the fish feed transformation efficiency to improve by research, reduce feed cost, do not influence the last weightening finish of fish body simultaneously.Therefore, the present invention attempts changing the existing mode of throwing something and feeding, and adopts limit food mode to throw something and feed, to obtain better culture benefit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of feeding method for the young grass carps breed, and this feeding method can obviously improve the feed efficiency of young grass carps, reduces feed cost, does not influence the last weightening finish of fish body simultaneously.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention: a kind of feeding method for the young grass carps breed, comprise that every day, the time of throwing something and feeding and mode routinely thrown something and fed, it is characterized in that changing the fate of throwing something and feeding weekly, namely carry out the hungry processing of intermittence in the juvenile growth stage.
Particularly, the feeding method of employing for hungry 1 day weekly, all the other threw something and fed in 6 days continuously, circulation is thrown something and fed according to this.
Particularly, the feeding method of employing for hungry 2 days weekly, all the other threw something and fed in 5 days continuously, circulation is thrown something and fed according to this.
Beneficial effect of the present invention: make intermittent hunger and coerce, constantly excite the compensatory growth potential of grass carp, promote the feed of grass carp transformation efficiency to improve, under the prerequisite that does not influence the fish body weight gains, reach the purpose that reduces feed cost.
Embodiment
Describe in further detail below in conjunction with the present invention of embodiment.
The hunger that design strength of the present invention is suitable is coerced, and constantly excites the compensatory growth potential of young grass carps, promotes feed efficiency to improve, and is not influencing under the fish body weight gains prerequisite, reaches the purpose that reduces feed cost.Determining of hungry intensity is key in culturing, and hunger is too of a specified duration, bait throwing in very little, the young grass carps deficiency of ingesting suppresses growth; Hungry not enough, compensatory growth potential can not fully excite, and does not then reach intended purposes.Therefore, it is crucial seeking suitable hungry intensity.In order to obtain the best that young grass carps cultures pattern of throwing something and feeding, the present invention has designed following test example.
Embodiment
Feeding facility is circulating water culture system, and capital equipment is that 12 single volumes are the 60cm * 60cm * 60cm(depth of water 54 cm) plastics cycle water aquarium.Duration of test, the quantity of circulating water of every case are 3.0 L/min, dissolved oxygen〉5.95mg O
2/ L, PH are 6.8-7.3, ammonia nitrogen＜0.10 mg/L.Natural lighting, water temperature (25 ± 1) ° C is by the common control that regulates the room temperature of electric heating warming rod heat cycles water and double-standard air-conditioning.
Grass carp is fingerling then, takes from 2814 fishing grounds, Hefei ,Anhui city, in above-mentioned cultivating system with compound feed temporarily more than the foster 10d.Test feed uses pellet of the same race, take a morsel before throwing something and feeding as the sample stored frozen at every turn, after the off-test all samples are mixed and oven dry, measuring its dry matter content is 91.12%, crude protein content 34.25% in the dry matter, fat 4.88%, ash content 7.89% is to represent dry matter, crude protein and the content of ashes of feed during the whole test.
Before on-test, with hungry 24 h of fish, random sampling is weighed, and the initial every tail of body weight is 10.04g, every case 30 tails.Experiment is established 4 groups, every group of 3 repetitions: first group throw something and feed continuously, uninterrupted during the whole test, 6 d continuously throw something and feed behind second group of hungry 1 d, 5 d continuously throw something and feed behind the 3rd group of hungry 2 d, 4 d that throw something and feed continuously behind the 4th group of hungry 3 d, each group all circulation is thrown something and fed, and total time is 28 d.4 kinds of modes are respectively with S
0(control group), S
1, S
2, S
3Expression.When throwing something and feeding every day 9:00 and 15:00 respectively throw excessive feed once, reclaim residual bait with siphonage behind 1.5 h, 70 ° of C oven dry.Residual bait amount is proofreaied and correct with the feed dissolve-loss ratio.During off-test, each organizes fish does not all have death, with hungry 24 h of fish, the every case gross weight of weighing.
Can draw specific productivity ratio, grazing rate and feed conversion rate and the feed coefficient of young grass carps 4 groups that difference throws something and feeds from above-mentioned test example.Concrete data see the following form:
Annotate: data are represented with mean+SD, n=3, and the identical expression of subscript letter is difference (Tukey check) not significantly
Specific growth rate=100 (Ln
W t-Ln
W o)/
t
Actual grazing rate=200
I Td/
T(
W t+
W o)
Average day food ration=200
I Td/
t(
W t+
W o)
Feed conversion rate (FCE)=100 (W
t-W
0)/I
Td
In the formula
W tBe whole last weight in wet base (g),
W oBe initial weight in wet base (g),
tBe test period (28 d),
TBe the actual fate of ingesting (d),
I TdFor the food ration of duration of test (dry weight, g).
Above-mentioned test data shows, S
1, S
2Heavy and the control group S of the fish body specific growth rate of group and whole opisthosoma
0(group of throwing something and feeding continuously) no significant difference, S
1The group average grazing rate a little less than control group, S
2Group then significantly is lower than control group, so S
1, S
2Group reaches the growth result similar to control group, wherein S by significantly improving feed efficiency
1Group improves 5.32%, S
2Group improves 9.66%, and therefore, intermittence is thrown something and fed, and the control food ration can improve efficiency of feed utilization, reduce food consumption, the especially pattern of throwing something and feeding of Cai Yonging for hunger 1 to 2 day weekly, remain fate and throw something and feed continuously, circulation is thrown something and fed, best results.
Claims (3)
1. one kind is used for the feeding method that young grass carps is cultured, and comprises that every day, the time of throwing something and feeding and mode routinely thrown something and fed, and it is characterized in that changing the fate of throwing something and feeding weekly, namely young grass carps is carried out intermittent hungry the processing.
2. a kind of feeding method of culturing for young grass carps as claimed in claim 1 is characterized in that: feeding method for hungry 1 day weekly, all the other threw something and fed in 6 days continuously, circulate according to this and throw something and feed.
3. a kind of feeding method of culturing for young grass carps as claimed in claim 1 is characterized in that: feeding method for hungry 2 days weekly, all the other threw something and fed in 5 days continuously, circulate according to this and throw something and feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101657092A CN103270981A (en) | 2013-05-08 | 2013-05-08 | Casting feeding method for breeding young grass carps |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101657092A CN103270981A (en) | 2013-05-08 | 2013-05-08 | Casting feeding method for breeding young grass carps |
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|---|---|
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| CN2013101657092A Pending CN103270981A (en) | 2013-05-08 | 2013-05-08 | Casting feeding method for breeding young grass carps |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104026054A (en) * | 2014-06-30 | 2014-09-10 | 新希望六和股份有限公司 | Manual net cage precipitable feed feeding method |
| CN104920256A (en) * | 2015-06-12 | 2015-09-23 | 中国水产科学研究院淡水渔业研究中心 | Method for increasing carp breeding production efficiency through hunger-compensating growth breeding mode |
| CN105557567A (en) * | 2014-10-17 | 2016-05-11 | 中国科学院水生生物研究所 | Controlled-feeding/heavy-feeding alternate feeding aquatic product fish culture method |
| CN112535126A (en) * | 2020-12-18 | 2021-03-23 | 岳西海富生态农业发展有限公司 | Optimized grass carp breeding method |
-
2013
- 2013-05-08 CN CN2013101657092A patent/CN103270981A/en active Pending
Non-Patent Citations (6)
| Title |
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| 姜海波等: "周期性饥饿－再投喂对牙鲆幼鱼生长和饲料利用的影响", 《大连水产学院学报》 * |
| 杨严鸥等: "长吻鮠、异育银鲫和草鱼补偿生长的比较研究", 《中国水产科学》 * |
| 沈文英等: "饥饿和再投喂对草鱼鱼种生物化学组成的影响", 《动物学报》 * |
| 王吉桥等: "鲤、鲢、鳙、草鱼苗和鱼种饥饿致死时间的研究", 《大连水产学院学报》 * |
| 祝尧荣: "饥饿和再投喂对草鱼鱼种糖代谢的影响", 《绍兴文理学院学报(自然科学版) 》 * |
| 邱岭泉等: "水产养殖动物补偿生长的研究概况", 《水产科学杂志》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104026054A (en) * | 2014-06-30 | 2014-09-10 | 新希望六和股份有限公司 | Manual net cage precipitable feed feeding method |
| CN104026054B (en) * | 2014-06-30 | 2017-01-25 | 新希望六和股份有限公司 | Manual net cage precipitable feed feeding method |
| CN105557567A (en) * | 2014-10-17 | 2016-05-11 | 中国科学院水生生物研究所 | Controlled-feeding/heavy-feeding alternate feeding aquatic product fish culture method |
| CN104920256A (en) * | 2015-06-12 | 2015-09-23 | 中国水产科学研究院淡水渔业研究中心 | Method for increasing carp breeding production efficiency through hunger-compensating growth breeding mode |
| CN112535126A (en) * | 2020-12-18 | 2021-03-23 | 岳西海富生态农业发展有限公司 | Optimized grass carp breeding method |
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Application publication date: 20130904 |