Early morning and late afternoon are good times to observe estrus. Does that are to be inseminated should be observed twice daily for 15-20 minutes. It is important to establish a heat detection schedule during the breeding season. A clear mucous discharge from the vulva.Decreased appetite and milk production.Females that stand to be mounted by herdmates.Does that are unusually aggressive, noisy, or active.Knowing when a doe comes into estrus lets the technician time insemination so it more nearly coincides with ovulation. Heat DetectionĪ producer's heat detection program is an important factor in determining whether an artificial insemination program will succeed. The duration of heat or estrus is typically 24 to 36 hours, with ovulation occurring near the end of estrus. For this reason, it is important to keep individual reproductive records on each doe. However, individual does can have either longer or shorter intervals between heat periods. The goat's average estrous cycle is 21 days. Estrous cycles can be initiated out of season by controlling artificial lights to simulate decreasing daylight. The breeding season is initiated by decreasing daylight and runs from late August to January in the United States. In general, dairy goats are seasonal breeders. Whatever the reasons for using AI, it is important that the producer fully understands the reproductive cycle of the doe and correct semen handling and insemination procedures. Breed several does the same day through use of AI and estrous synchronization.Increase the number of does to which a buck could be bred.Increase the rate of genetic improvement.Eliminate or reduce the cost of maintaining bucks.Reasons the dairy goat producer may consider using AI include the following: This publication discusses the use of frozen semen to artificially inseminate does. Does can be inseminated with either fresh semen or with commercially available frozen semen. (Print Friendly PDF) IntroductionĪrtificial insemination (AI) involves collection of semen from a buck and transfer of the semen to the reproductive tract of the doe. Hagevoort College of Agricultural, Consumer and Environmental Sciences, New Mexico State UniversityĪuthors: Respectively, Department Head, Department of Extension Animal Sciences and Natural Resource and Extension Dairy Specialist, Agricultural Science Center at Clovis, both of New Mexico State University. Guide D-704 Reviewed by Chris Allison and Robert G.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |