Effects of prenatal testosterone treatment on growth performance and carcass characteristics of cattle and sheep
DeHaan, Kevin Charles
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Permalink
https://hdl.handle.net/2142/19686
Description
Title
Effects of prenatal testosterone treatment on growth performance and carcass characteristics of cattle and sheep
Author(s)
DeHaan, Kevin Charles
Issue Date
1990
Doctoral Committee Chair(s)
Berger, Larry L.
Department of Study
Animal Sciences
Discipline
Animal Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Agriculture, Animal Culture and Nutrition
Language
eng
Abstract
Six experiments were conducted to determine the effects of prenatal testosterone treatment (P) alone or in combination with postnatal steroid implantation (I) on growth performance, carcass traits, nitrogen balance and endocrine status of cattle and sheep. In Exp. 1, P heifers possessed improved (P $$.10) were observed with fecal, urinary and total N excretion and amount of N absorbed. Nitrogen retained (% of intake and g/d) was higher (P $<$.05) in P ewe lambs compared to control ewe lambs. Plasma insulin and insulin-like growth factor I concentrations were 99.0% and 28.7% higher (P $<$.05) in P ewe lambs, respectively. Non-esterified fatty acid (NEFA) concentrations were 41.3% greater (P $<$.05) in P ewe lambs.
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