Growth curves for body weight and major component parts, feed consumption, and mortality of male broiler chickens raised to maturity

dc.contributor.author	Goliomytis, M	en
dc.contributor.author	Panopoulou, E	en
dc.contributor.author	Rogdakis, E	en
dc.date.accessioned	2014-06-06T06:45:32Z
dc.date.available	2014-06-06T06:45:32Z
dc.date.issued	2003	en
dc.identifier.issn	00325791	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2490
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0043238911&partnerID=40&md5=255818b83522ba2cce5e3b6fde692427	en
dc.subject	Broiler	en
dc.subject	Carcass component	en
dc.subject	Feed consumption	en
dc.subject	Growth curve	en
dc.subject	Mortality	en
dc.subject.other	Aves	en
dc.subject.other	Gallus gallus	en
dc.subject.other	Sigmoidea	en
dc.subject.other	aging	en
dc.subject.other	animal	en
dc.subject.other	animal food	en
dc.subject.other	article	en
dc.subject.other	body weight	en
dc.subject.other	chicken	en
dc.subject.other	eating	en
dc.subject.other	genetics	en
dc.subject.other	growth, development and aging	en
dc.subject.other	male	en
dc.subject.other	meat	en
dc.subject.other	mortality	en
dc.subject.other	species difference	en
dc.subject.other	Aging	en
dc.subject.other	Animal Nutrition Physiology	en
dc.subject.other	Animals	en
dc.subject.other	Body Weight	en
dc.subject.other	Chickens	en
dc.subject.other	Eating	en
dc.subject.other	Male	en
dc.subject.other	Meat	en
dc.subject.other	Mortality	en
dc.subject.other	Species Specificity	en
dc.title	Growth curves for body weight and major component parts, feed consumption, and mortality of male broiler chickens raised to maturity	en
heal.type	journalArticle	en
heal.publicationDate	2003	en
heal.abstract	Body weight; yield of the major carcass component parts of breast, leg, thigh, drumstick, breast meat, thigh meat, and drumstick meat; feed consumption; feed conversion; and mortality of male broiler chickens from two commercial strains were measured from hatching to 154 d of age. As no differences were observed between the two strains, for any of the traits measured, the statistical analysis was made using pooled data. Growth curves for BW, breast weight, and leg weight were calculated. The Richards function was chosen to fit the data. The type of the curves predicted was typically sigmoid. Asymptotic weights for BW, breast weight, and leg weight were estimated at 6,870.2, 1,744.2, and 851.5 g, respectively. Age at point of inflection, at which maximum growth rate is attained, was predicted at 44.4, 47, and 49.1 d, respectively. The percentage of breast and breast meat increased with age, whereas percentages of leg, thigh, and drumstick remained roughly constant. Weekly feed conversion was determined, and polynomial functions were applied to relate feed consumption and feed conversion to the age of the birds. Cumulative mortality increased with age, especially beyond 70 d of age, rising to 50% by the end of the experiment. Mortality was related to high incidence of leg weakness observed in the same period. The results of the current study provide information on the growth potential of contemporary, genetically improved broiler chickens by means of a mathematical model.	en
heal.journalName	Poultry Science	en
dc.identifier.issue	7	en
dc.identifier.volume	82	en
dc.identifier.spage	1061	en
dc.identifier.epage	1068	en