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Method for fixed-time inseminating of anestrus and non-pregnant sows

A technology of timed insemination and empty sows, which is applied in the field of timed insemination of anestrous and empty sows, can solve the problems of timely mating difficulties, different durations of estrus, and inconspicuous estrus

Inactive Publication Date: 2015-05-27
NINGBO SANSHENG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, in the process of implementing this technology, blood gonadotropin or blood gonadotropin and chorionic gonadotropin compound preparations are used to induce follicular development and induce estrus in anestrous and empty pregnant sows, often because sows have recessive estrus , The estrus is not obvious, and the duration of estrus is different, which brings difficulties to timely breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, the object is a body-mature anestrous gilt, and the application method is as follows:

[0031] Select gilts aged 250-280 days and weighing 140-160 kg, and non-estrus sows that have been continuously observed for 25 days. Group 1 first intramuscularly injected 0.2 mg of cloprostinol (sodium), and then intramuscularly injected 0.1 mg of cloprostinol (sodium) at an interval of 24 hours. Blood tropin 800 units, 80 hours after the use of blood tropin, intramuscular injection of GnRH 100 micrograms, 24 hours and 40 hours after the injection of GnRH, insemination once each; group 2 did not inject cloprostinol (sodium) treatment, directly Intramuscular injection of 800 units of blood tropin, 100 micrograms of GnRH 80 hours after the use of blood tropin, and one insemination each 24 hours and 40 hours after the injection of GnRH. On the 23rd day after mating, B-ultrasound was used to diagnose pregnancy, and for suspicious cases, B-ultrasound was re-examined ...

Embodiment 2

[0035] In this embodiment, the object is a body-mature anestrous gilt, and the application method is as follows:

[0036] Select gilts aged 250-280 days and weighing 140-160 kg, and non-estrus sows that have been continuously observed for 25 days. First intramuscular injection of 0.2 mg of cloprostinol (sodium), followed by intramuscular injection of 0.1 mg of cloprostinol (sodium) at an interval of 24 hours. 800 units of sex hormone, 60, 72, 80, and 90 hours after the use of blood tropin, intramuscular injection of 100 micrograms of GnRH, 24 hours and 40 hours after the injection of GnRH, each insemination once; group 2 did not inject cloprostinol (sodium ) treatment, direct intramuscular injection of 800 units of gonadotropin, intramuscular injection of 100 micrograms of GnRH 80 hours after the use of gonadotropin, and insemination once 24 hours and 40 hours after the injection of GnRH. On the 23rd day after mating, B-ultrasound was used to diagnose the pregnancy status, and ...

Embodiment 3

[0040] In this embodiment, the object is an anestrous multiparous sow within 7 days after weaning, and the application method is as follows:

[0041] Select weaned sows with a healthy lactation period of 21-25 days, and sows that have not been in estrus within 7 days after weaning, inject 800 units of blood gonadotropin intramuscularly, and inject 100 micrograms of GnRH intramuscularly 80 hours after using gonadotropin. Insemination was performed once every 24 hours and 40 hours, and B-ultrasound was used to diagnose the pregnancy on the 23rd day after mating. For suspicious cases, B-ultrasound was checked again 30 days after mating to diagnose the pregnancy. The test results are shown in Table 3.

[0042] Table 3: Results of use of anestrous sows within 7 days post-weaning

[0043] number of sows

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Abstract

The invention provides a method for fixed-time inseminating of anestrus and non-pregnant sows. The method is characterized in that 1, pre-treatment: applying prostaglandin F2alpha or cloprostenol sodium for long-time anestrus multiparous sows, long-time anestrus replacement sows and non-pregnant sows, and not performing pre-treatment on the anestrus sows within seven days after weaning; 2, promoting of synchronizing of follicular development and estrus induction of the sows: applying a medicine for promoting the follicular development and estrus induction; 3, promoting of synchronizing of sow ovulation: applying a medicine for promoting the follicle final maturing and ovulation; 4, fixed-time inseminating: applying a medicine for promoting ovulation for the obvious estrus, standing reaction, un-estrum or anestrus or inobvious estrus sows, and performing fixed-time inseminating. The method has the advantages that the breeding and delivering rate is effectively improved, the sow resources are sufficiently utilized, the elimination rate of the multiparous sows is reduced, and the utilization rate of the replacement sows is improved.

Description

technical field [0001] The invention relates to an application technology in the field of livestock reproduction, in particular to a method for timing insemination of anestrous and empty pregnant sows. Background technique [0002] Anestrous and empty pregnant sows include anestrous sows, empty pregnant sows and anestrous gilts, all of which show that they are not pregnant and do not go into estrus. The reason is that the secretion of hormones caused by various emergency factors or Disturbances, insufficient estrogen responsiveness, nutritional factors, feed mycotoxin contamination, and disease ultimately lead to a significant increase in non-productive days and culling rates in 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 use tetraenylestrone to prevent the development of sow follicles and synchronize the sexual cycle, and then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61D19/02
CPCA61D19/027
Inventor 翁士乔裘永浩张宏崔贞亮
Owner NINGBO SANSHENG PHARMA
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