Selection for eight-week body weight in two randombred chicken populations under altered water to feed ratios. 2. Feed intake, water intake, and abdominal fat levels.
Poult Sci
; 73(10): 1489-98, 1994 Oct.
Article
em En
| MEDLINE
| ID: mdl-7816723
ABSTRACT
Four experiments were conducted to investigate feed and water intake, feed efficiency, and abdominal fat levels of six lines of chickens developed from two randombred control populations following selection for high 8-wk BW under high (1.6%), low (.2%), and normal (.4%) dietary salt selection environments. The Athens-Canadian Randombreds (AC) and Athens Randombreds (ARB) served as base populations for development of the six lines. Progeny from these lines were evaluated in the first, fifth, sixth, and seventh generations in Experiments 1, 2, 3, and 4, respectively. In Experiment 1, abdominal fat levels were shown to be inversely related to dietary salt level. The lowest abdominal fat level was observed in birds fed the 1.6% salt diet and the highest abdominal fat level in birds fed the .2% salt diet. Birds receiving the normal (.4%) salt diet had intermediate abdominal fat levels. In Experiments 2, 3, and 4, selected lines were exposed to different dietary salt levels to measure both line and dietary salt response patterns. Significant (P < .05) differences were observed between genotypes (AC vs ARB) and between dietary salt treatments for BW, feed and water intake, and water to feed ratio. However, there was no evidence of genetic change between lines in abdominal fat level as a result of selection under different salt environments.
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Base de dados:
MEDLINE
Assunto principal:
Seleção Genética
/
Peso Corporal
/
Galinhas
/
Tecido Adiposo
/
Cloreto de Sódio na Dieta
/
Ingestão de Alimentos
Limite:
Animals
Idioma:
En
Revista:
Poult Sci
Ano de publicação:
1994
Tipo de documento:
Article