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Centralized impregnation method for donkeys

A donkey and tetraenylestrone technology, which is applied in animal husbandry and other fields, can solve the problems of lagging and lack of research in the simultaneous estrus technology of horses and donkeys, and achieve the effect of reducing the workload of breeding, simple operation and obvious effect

Active Publication Date: 2016-12-14
SHAN DONG DONG E E JIAO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In recent years, the embryo transfer of horses and donkeys has been studied in many units across the country. Embryo transfers have higher requirements for the ovulation time of female donkeys and mare recipients, but the technology of simultaneous estrus of horses and donkeys is relatively lagging behind, and there is almost no research in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: this donkey concentrated conception method comprises the following steps:

[0032] (1). On the first day, 100 empty pregnant female donkeys were selected, and each female donkey was injected with cloprostenol 2 mg;

[0033] (2). From the second day onwards, 20 mg of tetraenestrone per female donkey per day was mixed into the diet of female donkeys and continuously fed for 18 days;

[0034] (3). On the last day of feeding tetraenestrone, inject 8 mg of cloprostenol to each ewe, and stop feeding tetraenestrone;

[0035] 2). Concentrated artificial insemination of female donkeys

[0036] On the 4th day after stopping the feeding of tetraenestrone, each female donkey was artificially inseminated and injected with Hcg1000 units, and the female donkey was artificially inseminated again the next day.

[0037] Results: Out of 100 female donkeys, 56 female donkeys were successfully conceived, and the pregnancy rate in monoestrous period was 56%.

Embodiment 2

[0038] Embodiment 2: this donkey concentrated conception method comprises the following steps:

[0039] (1). On the first day, 80 empty pregnant female donkeys were selected, and each female donkey was injected with cloprostenol 5 mg;

[0040] (2). From the second day, 30 mg of tetraenylestrone was mixed into the diet of the female donkey and fed continuously for 7 days;

[0041] (3). On the last day of feeding tetraenestrone, inject 5 mg of cloprostenol into each donkey, and stop feeding tetraenestrone;

[0042] 2). Concentrated artificial insemination of female donkeys

[0043] On the 6th day after stopping the feeding of tetraenestrone, artificial insemination was performed on each female donkey, and Hcg3500 units were injected, and artificial insemination was performed on the female donkey again the next day.

[0044] Results: Among the 80 female donkeys, 40 female donkeys were successfully conceived, and the success rate of monoestrous pregnancy was 50%.

Embodiment 3

[0045] Embodiment 3: this donkey concentrated conception method comprises the following steps:

[0046] (1). On the first day, 120 empty pregnant female donkeys were selected, and each female donkey was injected with cloprostenol 8 mg;

[0047] (2). From the second day onwards, 8 mg of tetraenestrone was mixed into the diet of the female donkey and fed continuously for 12 days;

[0048] (3). On the last day of feeding tetraenestrone, inject 2 mg of cloprostenol into each donkey, and stop feeding tetraenestrone;

[0049] 2). Concentrated artificial insemination of female donkeys

[0050] On the 8th day after stopping feeding tetraenestrone, artificial insemination was performed on each female donkey, and 6000 units of Hcg were injected, and artificial insemination was performed on the female donkey again the next day.

[0051] Results: Out of 120 female donkeys, 70 female donkeys were successfully conceived, with a pregnancy success rate of 58.3%.

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Abstract

The invention relates to a centralized impregnation method for donkeys. The existing method has the disadvantages of decentralized estrus of donkeys, large ovulation touching workload and low artificial insemination success rate. The centralized impregnation method for donkeys includes the following steps of centralized estrus of female donkeys: (1) selecting a plurality of non-pregnant female donkeys on the first day, and injecting 2-8mg of cloprostenol into each female donkey; (2) from the second day, mixing 8-30mg of aviglycine hydrochloride into daily ration for each female donkey every day, and continuously feeding the female donkeys with aviglycine hydrochloride mixed feed for 7-18 days; (3) on the last day of feeding female donkeys with aviglycine hydrochloride, injecting 2-8mg of cloprostenol into each female donkey, and stopping feeding female donkeys with aviglycine hydrochloride; centralized artificial insemination for female donkeys: on the fourth-eighth day since stopping feeding female donkeys with aviglycine hydrochloride, performing artificial insemination on each female donkey, injecting 1,000-6,000 units of Hcg (human chorionic gonadotropin), and performing artificial insemination on female donkeys once again after one day. The method has the advantages of simplicity in operation, high pregnancy rate and small labor intensity, thereby being suitable for large-scale donkey breeding.

Description

technical field [0001] The invention relates to a donkey concentrated conception method. Background technique [0002] Due to the single feeding method and lack of exercise in captive female donkeys, the secretion of hormones in the body is often unbalanced, which leads to the quiet discharge of ovarian follicles, but there is no external estrus. According to incomplete statistics, the estrus performance rate of retail female donkeys with a breeding scale of 10-20 female donkeys is generally 40%-60%; while the estrus performance rate of female donkeys in large-scale farms can only reach about 20%-40% . [0003] (1) The low rate of estrus expression is the main reason for the low conception rate of donkeys [0004] In terms of reproduction, the estrus cycle of female donkeys is 21-24 days. The estrus period of female donkeys in temperate low-altitude areas is generally from mid-March to mid-September every year. Female donkeys can breed 6-7 times normally when they are not ...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 周祥山嵇传良姜桂苗李敏贺林同刘冰马运峰张新浩王洪栋赵志超张世勇
Owner SHAN DONG DONG E E JIAO
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