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Detection of estrus with cows administered testosterone via injections and/or silastic implants
- Source :
- Theriogenology. 15(3)
- Publication Year :
- 1980
-
Abstract
- Over a three year period 8 cows and 2 heifers were administered testosterone via injections and/or silastic implants. During and subsequent to treatments, blood samples were collected for determination of testosterone and cows were observed for male sex behavior. Male sex behavior was induced by administering 200 mg of testosterone propionate every other day for 20 days, and once induced, male sex behavior was maintained by injections of 200 mg of testosterone propionate every 10 days or by two 15 cm silastic implants containing testosterone propionate. Male sex behavior was also induced and maintained by administering an injection of testosterone enanthate (1 gm) and testosterone propionate (200 mg) and two 15 cm silastic implants containing testosterone propionate at the same time. Cows which are administered testosterone in this manner detected 94% of 231 females that were in estrus 342 times.
- Subjects :
- Testosterone propionate
Estrous cycle
Every other day
medicine.medical_specialty
Equine
business.industry
Testosterone (patch)
Silastic
chemistry.chemical_compound
Endocrinology
Food Animals
chemistry
Internal medicine
Testosterone enanthate
medicine
Animal Science and Zoology
Small Animals
business
Subjects
Details
- ISSN :
- 0093691X
- Volume :
- 15
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Theriogenology
- Accession number :
- edsair.doi.dedup.....03214ab73cedd23b4c90bbce15c74940