Effects of prenatal testosterone treatment on growth performance and carcass characteristics of cattle and sheep

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Animal Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• DeHaan, Kevin Charles

Contributors dc:contributor

• Berger, Larry L.

• Agriculture, Animal Culture and Nutrition

Statement dc:rights

• Copyright 1990 DeHaan, Kevin Charles

Language dc:language

eng

Identifier

AAI9026167
(UMI)AAI9026167

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19686