2000
DOI: 10.1590/s0102-09352000000300017
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Abstract: Os objetivos do estudo foram estimar os parâmetros genéticos e as tendências fenotípica, genética e de ambiente para produção de leite (PL), duração da lactação (DL), produção de gordura (PG) e porcentagem de gordura (CG) no leite, na raça Gir, utilizando análises uni e bivariadas sob o método da máxima verossimilhança restrita, por meio de algorítmo livre de derivadas (MTDFREML), ajustando modelos-animal. O modelo matemático adotado para as quatro características produtivas incluiu os efeitos fixos de rebanho… Show more

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Cited by 6 publications
(3 citation statements)
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“…The heritability estimated for LL was 0.12, a value also similar to those usually reported in the literature, ranging from 0.11 for Gyr cattle to 0.19 for crossbred Zebu animals (Balieiro et al, 2000;Vercesi Filho et al, 2007).…”
Section: Discussionsupporting
confidence: 85%
“…The heritability estimated for LL was 0.12, a value also similar to those usually reported in the literature, ranging from 0.11 for Gyr cattle to 0.19 for crossbred Zebu animals (Balieiro et al, 2000;Vercesi Filho et al, 2007).…”
Section: Discussionsupporting
confidence: 85%
“…Estimates of repeatability (ĥ 2 +ĉ 2 ) for productive traits were moderate to high (from 0.29 to 0.47). Estimates of repeatability for milk 305-d, fat 305-d, and DIM were very close to the values of 0.51, 0.47, and 0.32 reported by Balieiro et al (2000). Balieiro et al (1999) estimated repeatability of 0.17 for CI, which is the same value presented in this paper.…”
Section: Resultssupporting
confidence: 88%
“…Estimates of heritability for milk 305-d, fat 305-d, and DIM were higher than the previously values of 0.21 and 0.24 (Balieiro et al, 2000;Lagrota et al, 2010), 0.21 (Balieiro et al, 2000), and 0.11 (Balieiro et al, 2000), respectively, reported in Gyr cattle. The estimated heritability for AFC is in the interval between 0.17 (Balieiro et al, 1999) and 0.22 in the same breed.…”
Section: Resultscontrasting
confidence: 64%