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Titolo:
Genetic parameters for daily live-weight gain, live fleshiness and bone thinness in station-tested Piemontese young bulls
Autore:
Albera, A; Mantovani, R; Bittante, G; Groen, AF; Carnier, P;
Indirizzi:
Assoc Nazl Allevatori Bovini Razza Piemontese, I-12061 Carru, Italy Assoc Nazl Allevatori Bovini Razza Piemontese Carru Italy I-12061 Italy Univ Padua, Dept Anim Sci, I-35020 Legnaro, Italy Univ Padua Legnaro Italy I-35020 , Dept Anim Sci, I-35020 Legnaro, Italy Wageningen Inst Anim Sci, Anim Breeding & Genet Grp, NL-6700 AH Wageningen, Netherlands Wageningen Inst Anim Sci Wageningen Netherlands NL-6700 AH , Netherlands
Titolo Testata:
ANIMAL SCIENCE
, volume: 72, anno: 2001,
parte:, 3
pagine: 449 - 456
SICI:
1357-7298(200106)72:<449:GPFDLG>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
BEEF-CATTLE; VARIANCE-COMPONENTS; GROWTH TRAITS; PERFORMANCE; CONFORMATION; MUTATIONS; SLAUGHTER; ABILITY; MODELS; SCORES;
Keywords:
bulls; genetic parameters; live-weight gain; performance testing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Albera, A Assoc Nazl Allevatori Bovini Razza Piemontese, Strada Trinita 32A, I-12061Carru, Italy Assoc Nazl Allevatori Bovini Razza Piemontese StradaTrinita 32A Carru Italy I-12061
Citazione:
A. Albera et al., "Genetic parameters for daily live-weight gain, live fleshiness and bone thinness in station-tested Piemontese young bulls", ANIM SCI, 72, 2001, pp. 449-456

Abstract

Estimates of genetic parameters for beef production traits were obtained for Piemontese cattle. Data were from 988 young bulls station-tested from 1989 till 1998. Bulls entered the station at 6 to 8 weeks of age and, after an adaptation period of 3 months, were rested for growth, live fleshiness and bone thinness. Length of test was 196 days. Growth traits considered weregain at farm, gain during the adaptation period, gain on test and total gain at the station. Six different fleshiness traits and bone thinness were scored on live animals at the end of the test using a linear system. Live evaluations of fleshiness were adjusted for the weight at scoring in order toprovide an assessment of conformation independent of body size. Genetic parameters were estimated using animal models. Heritability of live-weight gain ranged from 0.20 in the adaptation period to 0.60 for total gain at the station. Genetic correlations between gains at station in different periodswere high (from 0.63 to 0.97). Residual correlation between gain during the adaptation period and gain during rest was negative, probably due to the occurrence of compensatory growth of the animals. Live fleshiness traits and bone thinness were of moderate to high heritability (from 0.34 to 0.55) and highly correlated indicating that heavy muscled bulls also have thin bones. Accuracy of breeding values and therefore response to selection were improved by multiple trait analysis of the live fleshiness traits and bone thinness. Overall weight gain at the station had a moderate negative genetic correlation with all live fleshiness traits and bone thinness (from -0.11 to -0.39).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 10:07:59