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Efficient heat detection and synchronous fertilization method of replacement gilts and multiparous sows

A technology for gilts and sows, applied in the field of livestock breeding, can solve the problems of increasing non-production days and culling rate of sows, low estrus rate, etc., so as to improve the breeding and farrowing rate, improve the utilization rate, and reduce the non-production days. Effect

Inactive Publication Date: 2016-03-23
NINGBO SANSHENG PHARMA
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  • Description
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  • Application Information

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Problems solved by technology

[0002] After the gilts reach maturity, the estrus rate is often low, and the estrus rate of multiparous sows is also low within 7 days of weaning. The reasons are insufficient or disordered hormone secretion, insufficient estrogen responsiveness, and nutritional Sexual factors, feed mycotoxin contamination and diseases and other factors, eventually lead to a great increase in the number of non-productive days and the culling rate of sows

Method used

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  • Efficient heat detection and synchronous fertilization method of replacement gilts and multiparous sows
  • Efficient heat detection and synchronous fertilization method of replacement gilts and multiparous sows

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Embodiment 1

[0034] In this embodiment, the object is a gilt, and the application method is as follows:

[0035] Select gilts aged 210-230 days and weighing more than 115 kg. All gilts were given tetraenylestrone for 18 days, fed 20mg by oral gun once a day, and then 800 units of blood gonadotropin were injected intramuscularly at an interval of 42 hours after the feeding was stopped. Inject GnRH 100 micrograms, group 1 uses boar lure, boar lure starts from the second day after the injection of blood gonadotropin, and ends on the fifth day, once in the morning and afternoon, no estrus check, 24 hours after the injection of GnRH and the end of the fifth day. Insemination once every 40 hours; Group 2 adopts the method of the present invention, and also uses boars to induce the situation. The boars induce the situation from the 2nd day after the injection of blood gonadotropin, and end in the morning of the 6th day. Once, 24 hours and 40 hours after GnRH injection, one insemination each. At...

Embodiment 2

[0040] In this embodiment, the object is economic production, and the application method is as follows:

[0041] Select healthy sows. All sows were injected intramuscularly with 800 units of gonadotropin 24 hours after weaning, and 100 micrograms of GnRH were injected intramuscularly 72 hours after using gonadotropin.

[0042] Group 1 used boar lure. The boar lure started from the 2nd day after the injection of blood gonadotropin and ended on the 5th day, once in the morning and in the afternoon. Essence 1 time;

[0043]Group 2 adopts the method of the present invention and also uses boars to lure. The boars start on the 2nd day after the injection of hematotropin, and end in the morning of the 6th day. Each time in the morning and afternoon, 24 hours and 24 hours after the injection of GnRH. Insemination once every 40 hours. At the same time, a two-point estrus check was adopted, during the intramuscular injection of GnRH and 64 hours after the intramuscular injection of G...

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Abstract

The invention provides an efficient heat detection and synchronous fertilization method of replacement gilts and multiparous sows. The method has the advantages that mating of the multiparous sows and that of the added replacement gilts can be synchronized to allow batch management for sow's production; utilization and mating productivity of sows can also be increased; non-productive days for sows are fewer; work efficiency of mating staff can be improved; the purpose of all in and all out is easily obtainable, and sows can be imparted same reproductive statuses, health statuses and immune statuses.

Description

technical field [0001] The invention relates to the field of livestock reproduction, in particular to a method for efficient estrus detection and synchronous conception of back-up and multiparous sows. Background technique [0002] After the gilts reach maturity, the estrus rate is often low, and the estrus rate of multiparous sows within 7 days of weaning is also low. The reasons are insufficient or disordered hormone secretion, insufficient estrogen responsiveness, and nutritional Factors such as sexual factors, feed mycotoxin contamination, and diseases eventually lead to a significant increase in the number of non-productive days and the culling rate of sows. [0003] For nearly half a century, sow estrus synchronization and timed insemination technology have been important research directions in the field of livestock reproduction. The gilts were fed 20mg tetraenestrone for 18 consecutive days to prevent the follicular development of the sows and synchronize the sexual...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 翁士乔裘永浩张宏崔贞亮
Owner NINGBO SANSHENG PHARMA
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