Detection of estrus with cows administered testosterone via injections and/or silastic implants.

Detection of estrus with cows administered testosterone via injections and/or silastic implants. Research Abstract Details 

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Detection of estrus with cows administered testosterone via injections and/or silastic implants. Abstract Text:

D J Kesler,T R Troxel,D L Vincent,N S Scheffrahn,R C Noble,

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.

Detection of estrus with cows administered testosterone via injections and/or silastic implants. Publishing Authors By Initials

DJ Kesler,TR Troxel,DL Vincent,NS Scheffrahn,RC Noble,

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Detection of estrus with cows administered testosterone via injections and/or silastic implants. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 15

Page Numbers: 327-34

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Mar

YEAR: 1981

Detection of estrus with cows administered testosterone via injections and/or silastic implants. Information

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LANGUAGE: eng

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AFFILIATION: Department of Animal Science University of Illinois Urbana, Illinois 61801 USA.

Country: United States

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MEDLINETA: Theriogenology

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