Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1980-7-12
pubmed:abstractText
Two experiments were conducted to study the influence of genotype and diet on general performance and incidence of leg abnormalities of commercial broiler chickens reared to roaster weight. In Experiment 1 a total of 1960 male day-old chicks of seven different commercial genotypes were housed separately in 14 pens (25.64 m2) with 140 birds per pen and fed one dietary regimen. In experiment 2, 3000 male day-old chicks of two commercial genotypes were randomly assigned to 20 pens (13.54 m2) with 150 birds per pen, and two replicate pens were fed one of the five different dietary regimens designed to promote rapid, intermediate, or slow growth. Differences (P less than .05) were observed among the genotypes tested (Experiment 1) in the incidence of mortality, leg abnormalities, live weight, and feed conversion but not for mean monetary returns per bird housed. In Experiment 2, significant differences (P less than .01) were observed among the dietary regimens tested for live weight, feed conversion, and monetary returns per bird housed. As the protein content of starters, growers, and finishers decreased, body weight decreased but monetary returned improved. Feeding the birds beyond 63 days resulted in substantial reduction in monetary returns. A dietary regimen which included starter, grower, developer, and finisher with 18, 24, 22, and 14% protein, respectively, resulted in significantly better feed conversion and a significantly lower incidence of leg abnormalities. Genotype X diet interactions were considered of no practical importance.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0032-5791
pubmed:author
pubmed:issnType
Print
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
748-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Influence of genotype and diet on general performance and incidence of leg abnormalities of commercial broilers reared to roaster weight.
pubmed:publicationType
Journal Article