Selection for high eight-week body weight in normal and dwarf chickens under high-protein and high-energy diets.

dc.contributor.author	Marks, HL	en
dc.date.accessioned	2014-06-06T06:42:47Z
dc.date.available	2014-06-06T06:42:47Z
dc.date.issued	1995	en
dc.identifier.issn	00325791	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/813
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0029281322&partnerID=40&md5=a0dbd3c90f2477e5ed8e5ad76c4c4d54	en
dc.subject.other	adipose tissue	en
dc.subject.other	animal	en
dc.subject.other	animal disease	en
dc.subject.other	article	en
dc.subject.other	body weight	en
dc.subject.other	caloric intake	en
dc.subject.other	chicken	en
dc.subject.other	drinking	en
dc.subject.other	dwarfism	en
dc.subject.other	eating	en
dc.subject.other	female	en
dc.subject.other	genetic selection	en
dc.subject.other	genetics	en
dc.subject.other	male	en
dc.subject.other	pathophysiology	en
dc.subject.other	physiology	en
dc.subject.other	protein intake	en
dc.subject.other	sex difference	en
dc.subject.other	time	en
dc.subject.other	Adipose Tissue	en
dc.subject.other	Animal	en
dc.subject.other	Body Weight	en
dc.subject.other	Chickens	en
dc.subject.other	Dietary Proteins	en
dc.subject.other	Drinking	en
dc.subject.other	Dwarfism	en
dc.subject.other	Eating	en
dc.subject.other	Energy Intake	en
dc.subject.other	Female	en
dc.subject.other	Male	en
dc.subject.other	Selection (Genetics)	en
dc.subject.other	Sex Factors	en
dc.subject.other	Time Factors	en
dc.title	Selection for high eight-week body weight in normal and dwarf chickens under high-protein and high-energy diets.	en
heal.type	journalArticle	en
heal.publicationDate	1995	en
heal.abstract	A study was conducted to examine genetic parameters associated with selection for high 8-wk BW in normal and dwarf Athens Canadian randombreds under two nutritional environments (high protein and high energy) and to determine the influence of the selection diet on subsequent water to feed ratios and abdominal fat levels. High-protein lines (HP) received a diet containing 25% CP and 3,100 kcal ME/kg, whereas high-energy lines (HE) received a 22% CP diet containing 3,200 kcal ME/kg. Body weights, selection gains, selection differentials, and heritabilities were similar for normal HP and HE lines. There was evidence, however, that the realized heritability was greater in the HE than the HP dwarf line. Similar selection differentials indicate that this difference was apparently due to the expression of greater genetic variation in the HE dwarf line. Water intake, feed intake, water to feed ratio, and abdominal fat data for the four lines under ""selection"" and ""reciprocal"" environments differed between experiments. In Experiment 1, when fed the HE diet, normal birds selected under the HP environment had higher (P < .05) water to feed ratios and lower abdominal fat levels than contemporaries selected under the HE diet. However, these differences were not significant in Experiment 2.	en
heal.journalName	Poultry science	en
dc.identifier.issue	4	en
dc.identifier.volume	74	en
dc.identifier.spage	593	en
dc.identifier.epage	600	en