CN104186418A - Method for increasing oestrus breeding rate of replacement gilts - Google Patents
Method for increasing oestrus breeding rate of replacement gilts Download PDFInfo
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- CN104186418A CN104186418A CN201410455346.0A CN201410455346A CN104186418A CN 104186418 A CN104186418 A CN 104186418A CN 201410455346 A CN201410455346 A CN 201410455346A CN 104186418 A CN104186418 A CN 104186418A
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Abstract
The invention discloses a method for increasing the oestrus breeding rate of replacement gilts. The method includes the steps of breeding gilt selection, nutrient matching, feed mildewing, illumination control, temperature, humidity and ventilation control, and replacement gilt raising. In the method, vaccine immunity and drug health care should be performed; green fodder should be provided; driving movement, swinery changing, swinery combination and vehicle carrying movement should be performed; oestrus inducing should be performed; recording and short-time high-quality raising should be performed; breeding age in days and weight should be reasonable; concentrated oestrus breeding should be performed. Hormone oestrus promotion, Chinese herbal medicine oestrus promotion, starvation treatment and brown sugar oestrus promotion are performed on the anestrus replacement gilts. According to the invested cost of the method, 5166 replacement gilts are purchased this year, PG 600 needs to be used for 20% of the replacement gilts for oestrus promotion, the cost of the PG 600 used for each replacement gilt is 43 RMB, and the drug cost is 44427.60 RMB; according to the output value, after conventional treatment measures and oestrus promotion of PG 600, the oestrus breeding rate reaches 94.12%. 5166 replacement gilts are introduced, and supposing that the overall oestrus breeding rate is 93%, the standard oestrus breeding rate of the replacement gilts is 90%; the anestrus replacement gilts are sold, and supposing that each replacement gilt is 130 kg and each kg of the replacement gilts is 12 RMB, 411213.60 RMB of loss is reduced.
Description
Technical field
The present invention relates to improve the method for insemination of sows rate, especially a kind of method that improves replacement gilt rutting rate.
Background technology
On intensive pig farm, because will produce with flow process according to plan, all to supplement the replacement gilt of larger amt every year.But the thing followed, is that replacement gilt rutting rate low is again a troubling problem.How weary feelings replacement gilt is promoted the sexual maturity to improve its rutting rate and also become one of the problem that must face and solve in pig farm.
Summary of the invention
The object of this invention is to provide a kind of method that improves replacement gilt rutting rate.
The method of this raising replacement gilt rutting rate:
1. seed selection: from hereditary angle, the quality of oestrusing of replacement gilt has certain correlation with its female generation, and female generation oestruses, and its offspring oestruses and also relatively will get well; In normal conditions when seed selection, cannot be learnt its female generation situation of oestrusing, but indirectly from the viewpoint of mother for reproductive performance, father and mother are better for reproductive performance, offspring's reproductive performance is just better, same, its reproductive organs aspect defect is just fewer, oestruses just better;
2. nutrition: replacement gilt feed nutrition level is too low or too high, feeding is very few or too much, causes sow body condition to cross thin or overfertilization, all can affect its sexual maturity; Although some replacement gilt body condition is normal, in feeding process, reloads not in time, use for a long time vitamin A, E, B1, folic acid and vitamin h content lower fatten pig feed, gonad development is suppressed, sexual maturity postpones or is out of heat; So, normal excessively feed and appropriate feed extremely important;
3. feed mold: containing in the feed that goes mouldy multiplely can affect the mycotoxin that sow normally oestruses, especially zearalenone, sow is taken in after the feed that contains this toxin, and its normal endocrine function will be upset, and undesired or ovulation inhibition causes oestrusing; Reduce the feed that goes mouldy, need to store at the purchasing of raw materials, feed, the field management on pig farm, for example stockline, hopper the clean aspect of periodic cleaning make an effort;
4. illumination: replacement gilt must maintain 12-16 hour every day, light application time and the intensity of 50-100 lux, and light application time, undercapacity are all postponed or suppressed it and oestrus; As long as light application time and intensity are enough, day light and natural daylight do not have any difference, but under daily working condition, natural daylight is better than day light; Only the in the situation that of natural daylight intensity and deficiency of time, just use day light to supplement;
5. temperature, humidity, ventilation: temperature is too high or too low all can suppress oestrus of sow, and humidity is too large, ventilation is too small, the decline of sow resistance is easily fallen ill; So 18-20 degree experience temperature, 60%-75% humidity, winter ventilation amount 0.35m
3/ h*kg, spring and autumn ventilation 0.5m
3/ h*kg, summer ventilation amount 0.65m
3/ h*kg is desirable reference temperature, humidity and ventilation;
6. breeding sow: the group support of replacement gilt, by strong and weak, big or small, immune vaccine kind is hived off, and 6-8 head, every area on the spot that at least should have 3 square meters are raised in every hurdle; One hurdle single head is raised or stocking density is excessive, frequently close hurdle stings frame and all causes the development of ovary bad and cause puberty to postpone or out of heat, and during group support, the smell of the sow that oestruses or mounting meeting stimulate with hurdle oestrus of sow out of heat.
Improve a method for replacement gilt rutting rate, also should accomplish following some:
1. vaccine immunity and medicinal health-care: vaccine immunity and medicinal health-care have nothing to do in oestrusing, but it escorts for the breeding of sow and health, so must carry out;
2. cobalt blue pigment: in cobalt blue pigment, contain multivitamin, the intestines and stomach of regularly feeding and not only can promote oestrus of sow but also can temper sow, ready for improving nursing sow feed intake;
3. drive motion, change hurdle, He Lan, car roping be moving: often pig is arrived in to sports ground motion, above the average age for marriage pig out of heat is changed hurdle, closes hurdle and all impel it to oestrus;
4. lure feelings: when replacement gilt reaches 160-170 age in days, replacement gilt is lured to feelings;
5. record and short-term is excellent raises: on sow breeding card and minute book, carry out accurately the record of oestrusing of replacement gilt, convenient in the breeding of the second or the 3rd feelings phase, or according to oestrusing, record the processing of promoting the sexual maturity early of discovery sow out of heat; At breeding the last fortnight, carry out that short-term is excellent raises simultaneously, increase ovulation;
6. breed age in days and body weight: between just timing of replacement gilt and body weight in 220-230 age in days body weight, reach 130-140kg, the breeding of the second or the 3rd feelings phase; If breeding body weight under-reserve affects the service life in its all one's life too early; Spending evening and breed the nonproductive number of days of replacement gilt increases, and feed and management cost increase;
7. concentrate rutting: the back the sow that oestruses is write the date of oestrusing, then arrive in positioning rail and raise the unified feelings breeding of looking into, reduce leakage detection probability.
The described feelings that 4. lure have four kinds of ways: the one, sow is arrived in to boar hurdle, and effect is best, but workload is large, and efficiency is relatively low; The 2nd, with reaching the many boars of sexually matured, face stream foam, arrive in sow swinery and contact and lure feelings, the artificial back and massaging of pressing simultaneously, every day twice, 15-20 minute at every turn, the different boar of rotation every day lures feelings to lure feelings effective than with same boar; The 3rd, sow in season is put into Anestrus sows hurdle, allow its mounting or other sow of its Odor stimulation reach and lure feelings effect; The 4th, with discarded boar semen, splash to replacement gilt hurdle, in boar semen, contain hormones, induction oestrus of sow; Lure feelings to take second method as main, other three kinds because condition is separately limited to auxiliary.
For the replacement gilt of some weary feelings, should take some measures of promoting the sexual maturity:
1. hormone is promoted the sexual maturity: to replacement gilt intramuscular injection PG600 out of heat, and part of a shot; Or intramuscular injection 800-1000 unit pregnant mare serum gonadotrop(h)in (PMSG) (PMSG) estrus induction and impel follicular development, then inject 600-800 unit's human chorionic gonadotrophin (HCG) decorporation, sow showed and oestruses and ovulate in 3-5 days;
2. Chinese herbal medicine is promoted the sexual maturity: cordate houttuynia 2kg/ ton, and the Radix Astragali, Radix Codonopsis, gall nut, each 500g/ ton material of barrenwort are endured water spice and are fed, and connect and feed 10 days;
3. hungry processing: overfertilization sow is carried out to hunger and process, material reduces by half and feeds; Or stop feeding 1-2 days under the prerequisite that keeps normal water supply;
4. brown sugar is promoted the sexual maturity: every sow 50g, and stir-bake to brown adds water boil, and after water temperature changing, spice is fed.
The beneficial effect of the invention:
1, input cost:
Buy 5166 replacement gilts this year, need promote the sexual maturity with PG600 by 20%, 43 yuan of every part PG600 expenses, expenses for medicine is 5166*20%*43 unit=44427.60 yuan.
2, output value:
After first replacement gilt takes following conventional treatment measure and PG600 to promote the sexual maturity, rutting rate reaches 94.12%.I introduce 5166 replacement gilts this year, approximately 4500 yuan every of the expenses such as purchase, feeding and management, if whole rutting rate is calculated by 93%, replacement gilt rutting rate standard is 90%, sell weary feelings replacement gilt calculates by heavy 130kg/ head, 12 yuan/kg of unit price, and 4500* (93%-90%) * 5166-12*130* (93-90%) * 5166-44427.60=411213.60 unit can reduce the loss altogether.
Embodiment
Embodiment:
(1) to improve replacement gilt rutting rate, replacement gilt seed selection, feeding process should be noted that following some:
1, seed selection.From hereditary angle, the quality of oestrusing of replacement gilt has certain correlation with its female generation, and female generation oestruses, and its offspring oestruses and also relatively will get well.In normal conditions when seed selection, cannot be learnt its female generation situation of oestrusing, but can be indirectly from the viewpoint of mother for reproductive performance, father and mother are better for reproductive performance, offspring's reproductive performance is just better, same, its reproductive organs aspect defect is just fewer, oestruses just better.
2, nutrition.Replacement gilt feed nutrition level is too low or too high, and feeding is very few or too much, causes sow body condition to cross thin or overfertilization, all can affect its sexual maturity.Although some replacement gilt body condition is normal, in feeding process, reloads not in time, use for a long time vitamin A, E, B1, folic acid and vitamin h content lower fatten pig feed, gonad development is suppressed, sexual maturity postpones or is out of heat.So, normal excessively feed and appropriate feed extremely important.
3, feed mold.Going mouldy to contain in feed multiplely can affect the mycotoxin that sow normally oestruses, zearalenone especially, and sow is taken in after the feed that contains this toxin, and its normal endocrine function will be upset, and the undesired or ovulation of causing oestrusing suppresses.Reduce the feed that goes mouldy, need to store at the purchasing of raw materials, feed, field management such as the stockline on pig farm, hopper the aspects such as periodic cleaning is clean make an effort more.
4, illumination.Replacement gilt must maintain light application time and the intensity of 12-16 hour 50-100 lux every day, and light application time, undercapacity all can postpone or suppress it and oestrus.Though have expert to say as long as light application time and intensity are enough, what difference day light and natural daylight do not have, under daily working condition, natural daylight is obviously better than day light; Only the in the situation that of natural daylight intensity and deficiency of time, just suggestion supplements with day light.
5, temperature, humidity, ventilation.Temperature is too high or too low all can suppress oestrus of sow, and humidity is too large, the too small sow of ventilation resistance declines easily falls ill; So 18-20 degree experience temperature, 60%-75% humidity, winter ventilation amount 0.35m
3/ h*kg, spring and autumn ventilation 0.5m
3/ h*kg, summer ventilation amount 0.65m
3/ h*kg is comparatively desirable reference temperature, humidity and ventilation.
6, breeding sow.Replacement gilt should group support, and by strong and weak, big or small, immune vaccine kind is hived off, and 6-8 head is preferably raised, every area on the spot that at least should have 3 square meters in every hurdle.One hurdle single head is raised or stocking density is excessive, frequently close hurdle stings frame etc. and all can cause the development of ovary bad and cause puberty to postpone or out of heat, and smell or the mounting meeting of the sow that oestruses during group support stimulate with hurdle oestrus of sow out of heat.
(2) to improve replacement gilt rutting rate, also should accomplish following some:
1, vaccine immunity and medicinal health-care.Vaccine immunity and medicinal health-care have nothing to do in oestrusing, but breeding and health that it can be sow escorts, so must carry out.
2, cobalt blue pigment.In cobalt blue pigment, contain multivitamin, the intestines and stomach of regularly feeding and not only can promote oestrus of sow but also can temper sow, ready for improving nursing sow feed intake.
3, drive motion, change hurdle, He Lan, car roping be moving.Often pig is arrived in to sports ground motion, above the average age for marriage pig out of heat is changed hurdle, closes hurdle etc. and all can impel it to oestrus.
4, lure feelings.When replacement gilt reaches 160-170 age in days, reply replacement gilt lures feelings, lures feelings to have four kinds of ways: the one, sow is arrived in to boar hurdle, and effect is best, but workload is large, and efficiency is relatively low; The 2nd, with reaching the many boars of sexually matured, face stream foam, arrive in sow swinery and contact and lure feelings, the artificial back and massaging of pressing simultaneously, every day twice, 15-20 minute at every turn, the different boar of rotation every day lures feelings to lure feelings effective than with same boar; The 3rd, sow in season is put into Anestrus sows hurdle and allow its mounting or other sow of its Odor stimulation reach to lure feelings effect; The 4th, with discarded boar semen, splash to replacement gilt hurdle, in boar semen, contain hormones, can induce oestrus of sow.Generally lure feelings to take second method as main, other three kinds because condition is separately limited to auxiliary.
5, record and short-term are excellent raises.Should on sow breeding card and minute book, carry out accurately the record of oestrusing of replacement gilt, convenient in the breeding of the second or the 3rd feelings phase, also can be according to the record discovery sow out of heat that the oestruses processing of promoting the sexual maturity early; At breeding the last fortnight, carry out that short-term is excellent raises simultaneously, increase ovulation.
6, breeding age in days and body weight.Between just timing of replacement gilt and body weight should reach 130-140kg in 220-230 age in days body weight, the breeding of the second or the 3rd feelings phase is for well.If breeding body weight under-reserve can affect the service life in its all one's life too early; Spending evening and breed the nonproductive number of days of replacement gilt increases, and feed and management cost increase.
7, concentrate rutting.Back the sow that oestruses is write the date of oestrusing, then arrives in positioning rail and raise the unified feelings breeding of looking into, and can reduce leakage detection probability.
(3) will improve replacement gilt rutting rate, except above-mentioned method, for the replacement gilt of some weary feelings, we should take some measures of promoting the sexual maturity:
1, hormone is promoted the sexual maturity.To replacement gilt intramuscular injection PG600 out of heat, part of a shot; Also can pregnant mare serum gonadotrop(h)in (PMSG) (PMSG) estrus induction of intramuscular injection 800-1000 unit and impel follicular development, then inject 600-800 unit's human chorionic gonadotrophin (HCG) decorporation, sow generally in 3-5 days performance oestrus and ovulate.
2, Chinese herbal medicine is promoted the sexual maturity.Cordate houttuynia 2kg/ ton, the Radix Astragali, Radix Codonopsis, gall nut, each 500g/ ton material of barrenwort are endured water spice and are fed, and connect and feed 10 days.
3, hungry processing.Overfertilization sow is carried out to hunger and process, material reduces by half and feeds; Or stop feeding 1-2 days under the prerequisite that keeps normal water supply.
4, brown sugar is promoted the sexual maturity.Every sow 50g, stir-bake to brown adds water boil spice after water temperature changing and feeds.
One or more whiles of said method, Reusability, I introduce 5166 replacement gilts this year, and whole rutting rate is calculated by 93%, and replacement gilt rutting rate standard is 90%; Sell weary feelings replacement gilt by heavy 130kg/ head, 12 yuan/kg of unit price; 43 yuan of every parts of PG600 expense, by 20% intramuscular injection, total cost is 5166*20%*43 unit=44427.60 yuan.
Claims (4)
1. a method that improves replacement gilt rutting rate, is characterized in that:
1. seed selection: from hereditary angle, the quality of oestrusing of replacement gilt has certain correlation with its female generation, and female generation oestruses, and its offspring oestruses and also relatively will get well; In normal conditions when seed selection, cannot be learnt its female generation situation of oestrusing, but indirectly from the viewpoint of mother for reproductive performance, father and mother are better for reproductive performance, offspring's reproductive performance is just better, same, its reproductive organs aspect defect is just fewer, oestruses just better;
2. nutrition: replacement gilt feed nutrition level is too low or too high, feeding is very few or too much, causes sow body condition to cross thin or overfertilization, all can affect its sexual maturity; Although some replacement gilt body condition is normal, in feeding process, reloads not in time, use for a long time vitamin A, E, B1, folic acid and vitamin h content lower fatten pig feed, gonad development is suppressed, sexual maturity postpones or is out of heat; So, normal excessively feed and appropriate feed extremely important;
3. feed mold: containing in the feed that goes mouldy multiplely can affect the mycotoxin that sow normally oestruses, especially zearalenone, sow is taken in after the feed that contains this toxin, and its normal endocrine function will be upset, and undesired or ovulation inhibition causes oestrusing; Reduce the feed that goes mouldy, need to store at the purchasing of raw materials, feed, the field management on pig farm, for example stockline, hopper the clean aspect of periodic cleaning make an effort;
4. illumination: replacement gilt must maintain 12-16 hour every day, light application time and the intensity of 50---100 lux, and light application time, undercapacity are all postponed or suppressed it and oestrus; As long as light application time and intensity are enough, day light and natural daylight do not have any difference, but under daily working condition, natural daylight is better than day light; Only the in the situation that of natural daylight intensity and deficiency of time, just use day light to supplement;
5. temperature, humidity, ventilation: temperature is too high or too low all can suppress oestrus of sow, and humidity is too large, ventilation is too small, the decline of sow resistance is easily fallen ill; So 18-20 degree experience temperature, 60%-75% humidity, winter ventilation amount 0.35m
3/ h*kg, spring and autumn ventilation 0.5m
3/ h*kg, summer ventilation amount 0.65m
3/ h*kg is desirable reference temperature, humidity and ventilation;
6. breeding sow: the group support of replacement gilt, by strong and weak, big or small, immune vaccine kind is hived off, and 6-8 head, every area on the spot that at least should have 3 square meters are raised in every hurdle; One hurdle single head is raised or stocking density is excessive, frequently close hurdle stings frame and all causes the development of ovary bad and cause puberty to postpone or out of heat, and during group support, the smell of the sow that oestruses or mounting meeting stimulate with hurdle oestrus of sow out of heat.
2. a kind of method that improves replacement gilt rutting rate according to claim 1, is characterized in that: also should accomplish following some:
1. vaccine immunity and medicinal health-care: vaccine immunity and medicinal health-care have nothing to do in oestrusing, but it escorts for the breeding of sow and health, so must carry out;
2. cobalt blue pigment: in cobalt blue pigment, contain multivitamin, the intestines and stomach of regularly feeding and not only can promote oestrus of sow but also can temper sow, ready for improving nursing sow feed intake;
3. drive motion, change hurdle, He Lan, car roping be moving: often pig is arrived in to sports ground motion, above the average age for marriage pig out of heat is changed hurdle, closes hurdle and all impel it to oestrus;
4. lure feelings: when replacement gilt reaches 160-170 age in days, replacement gilt is lured to feelings;
5. record and short-term is excellent raises: on sow breeding card and minute book, carry out accurately the record of oestrusing of replacement gilt, convenient in the breeding of the second or the 3rd feelings phase, or according to oestrusing, record the processing of promoting the sexual maturity early of discovery sow out of heat; At breeding the last fortnight, carry out that short-term is excellent raises simultaneously, increase ovulation;
6. breed age in days and body weight: between just timing of replacement gilt and body weight in 220-230 age in days body weight, reach 130-140kg, the breeding of the second or the 3rd feelings phase; If breeding body weight under-reserve affects the service life in its all one's life too early; Spending evening and breed the nonproductive number of days of replacement gilt increases, and feed and management cost increase;
7. concentrate rutting: the back the sow that oestruses is write the date of oestrusing, then arrive in positioning rail and raise the unified feelings breeding of looking into, reduce leakage detection probability.
3. a kind of method that improves replacement gilt rutting rate according to claim 2, is characterized in that: the described feelings that 4. lure have four kinds of ways: the one, sow is arrived in to boar hurdle, and effect is best, but workload is large, and efficiency is relatively low; The 2nd, with reaching the many boars of sexually matured, face stream foam, arrive in sow swinery and contact and lure feelings, the artificial back and massaging of pressing simultaneously, every day twice, 15-20 minute at every turn, the different boar of rotation every day lures feelings to lure feelings effective than with same boar; The 3rd, sow in season is put into Anestrus sows hurdle, allow its mounting or other sow of its Odor stimulation reach and lure feelings effect; The 4th, with discarded boar semen, splash to replacement gilt hurdle, in boar semen, contain hormones, induction oestrus of sow; Lure feelings to take second method as main, other three kinds because condition is separately limited to auxiliary.
4. a kind of method that improves replacement gilt rutting rate according to claim 3, is characterized in that: for the replacement gilt of some weary feelings, should take some measures of promoting the sexual maturity:
1. hormone is promoted the sexual maturity: to replacement gilt intramuscular injection PG600 out of heat, and part of a shot; Or intramuscular injection 800-1000 unit pregnant mare serum gonadotrop(h)in (PMSG) (PMSG) estrus induction and impel follicular development, then inject 600-800 unit's human chorionic gonadotrophin (HCG) decorporation, sow showed and oestruses and ovulate in 3-5 days;
2. Chinese herbal medicine is promoted the sexual maturity: cordate houttuynia 2kg/ ton, and the Radix Astragali, Radix Codonopsis, gall nut, each 500g/ ton material of barrenwort are endured water spice and are fed, and connect and feed 10 days;
3. hungry processing: overfertilization sow is carried out to hunger and process, material reduces by half and feeds; Or stop feeding 1-2 days under the prerequisite that keeps normal water supply;
4. brown sugar is promoted the sexual maturity: every sow 50g, and stir-bake to brown adds water boil, and after water temperature changing, spice is fed.
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| CN105248376A (en) * | 2015-11-22 | 2016-01-20 | 河南联合英伟饲料有限公司 | Method for increasing postweaning oestrus rate of one-birth sows |
| CN105494976A (en) * | 2015-12-11 | 2016-04-20 | 安徽安泰农业开发有限责任公司 | Preparation method of spray medicine for preventing estrus failure of replacement gilts |
| CN105815273A (en) * | 2016-03-24 | 2016-08-03 | 赤峰家育种猪生态科技集团有限公司 | Method for breeding boars by means of combining constant production and visual management |
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| CN108077170A (en) * | 2017-12-14 | 2018-05-29 | 杨凌本香农业产业集团有限公司 | The replacement gilt feeding and management method of sow production performance can be improved |
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| CN105248376A (en) * | 2015-11-22 | 2016-01-20 | 河南联合英伟饲料有限公司 | Method for increasing postweaning oestrus rate of one-birth sows |
| CN105494976A (en) * | 2015-12-11 | 2016-04-20 | 安徽安泰农业开发有限责任公司 | Preparation method of spray medicine for preventing estrus failure of replacement gilts |
| CN105815273B (en) * | 2016-03-24 | 2018-10-09 | 赤峰家育种猪生态科技集团有限公司 | A kind of boar mating system that constant production is combined with range estimation management |
| CN105815273A (en) * | 2016-03-24 | 2016-08-03 | 赤峰家育种猪生态科技集团有限公司 | Method for breeding boars by means of combining constant production and visual management |
| CN105900920A (en) * | 2016-04-21 | 2016-08-31 | 颍上县中军农业科技开发有限公司 | Cultivating method for improving farrowing capacity of sows |
| CN106172227B (en) * | 2016-08-03 | 2019-04-30 | 肇庆华红动物保健有限公司 | A kind of method for breeding improving sow breeding quality |
| CN106172227A (en) * | 2016-08-03 | 2016-12-07 | 董标 | A kind of method for breeding improving sow breeding quality |
| CN106359268A (en) * | 2016-08-30 | 2017-02-01 | 界首市颖南万福家庭农场 | Method for cultivating sow in mating period |
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| CN108077170A (en) * | 2017-12-14 | 2018-05-29 | 杨凌本香农业产业集团有限公司 | The replacement gilt feeding and management method of sow production performance can be improved |
| CN110150219A (en) * | 2018-01-17 | 2019-08-23 | 浙江大飞龙动物保健品股份有限公司 | The purposes of sow aphrodisiac powder |
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| CN109329208A (en) * | 2018-11-22 | 2019-02-15 | 宜宾善作农牧有限责任公司 | A kind of full ecological pig cultural method |
| CN109874745A (en) * | 2019-04-25 | 2019-06-14 | 广西扬翔农牧有限责任公司 | A kind of method of promoting the sexual maturity of replacement gilt |
| CN109874745B (en) * | 2019-04-25 | 2021-07-09 | 广西扬翔农牧有限责任公司 | Estrus promoting method for replacement gilts |
| CN111713452A (en) * | 2020-07-06 | 2020-09-29 | 浙江省农业科学院 | Method for improving timing insemination efficiency of replacement gilts |
| CN111713452B (en) * | 2020-07-06 | 2021-11-19 | 浙江省农业科学院 | Method for improving timing insemination efficiency of replacement gilts |
| CN112205351A (en) * | 2020-09-04 | 2021-01-12 | 佛山科学技术学院 | Method for inducing sow oestrus by using pheromone |
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