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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/02/2022 |
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Data da última atualização: |
21/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HORTOLANI, B.; BERNARDES, P. A.; VERCESI FILHO, A. E.; PANETTO, J. C. do C.; EL FARO, L. |
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Afiliação: |
BRUNA HORTOLANI, Instituto de Zootecnia; PRISCILA ARRIGUCCI BERNARDES, Universidade Federal de Santa Catarina; ANÍBAL EUGÊNIO VERCESI FILHO, Instituto de Zootecnia; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; LENIRA EL FARO, Instituto de Zootecnia. |
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Título: |
Genetic parameters for body weight and milk production of dairy Gyr herds. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Tropical Animal Health and Production, v. 54, article 84, 2022. |
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DOI: |
https://doi.org/10.1007/s11250-022-03088-9 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to estimate genetic parameters for cow weight at calving (CW) and cumulative 305-day milk yield (MY305) in dairy Gyr cattle by two-trait analysis. The study used 1,847 CW records, in which 418 females presented more than one measure, and 4,048 MY305 records, wherein 1068 females provided repeated measures, from 2,339 females belonging to three herds, which calved between 1986 and 2019. Variance components were estimated by the restricted maximum likelihood method (REML) using a two-trait animal model. The model included direct additive genetic, permanent environmental and residual efects as random efects and the fxed efects of contemporary group, formed by animals that had calved on the same farm year and season, and age of cow at calving as covariates (ftted as linear and quadratic efect). The heritability estimates for CW and MY305 were 0.21±0.06 and 0.29±0.04, respectively, and repeatability estimates were 0.49±0.03 and 0.49±0.02. The genetic correlation between CW and MY305 was positive and of low magnitude (0.33±0.18), indicating that selection for MY305 will cause little genetic change in the weights of dairy Gyr animals. The genetic trends of breeding values of analyzed traits showed marked genetic gains in MY305, with little changes in CW of dairy Gyr cows over the years in the herds studied, which is an important result considering the production systems adopted in the tropics. |
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Palavras-Chave: |
Correlação genética; Dairy Zebu; Efeito genético; Genetic efect; Herdabilidade. |
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Thesagro: |
Gado Leiteiro; Gado Zebu; Lactação. |
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Thesaurus Nal: |
Genetic correlation; Heritability; Lactation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02356naa a2200313 a 4500
001 2140137
005 2022-12-21
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11250-022-03088-9$2DOI
100 1 $aHORTOLANI, B.
245 $aGenetic parameters for body weight and milk production of dairy Gyr herds.$h[electronic resource]
260 $c2022
520 $aThe aim of this study was to estimate genetic parameters for cow weight at calving (CW) and cumulative 305-day milk yield (MY305) in dairy Gyr cattle by two-trait analysis. The study used 1,847 CW records, in which 418 females presented more than one measure, and 4,048 MY305 records, wherein 1068 females provided repeated measures, from 2,339 females belonging to three herds, which calved between 1986 and 2019. Variance components were estimated by the restricted maximum likelihood method (REML) using a two-trait animal model. The model included direct additive genetic, permanent environmental and residual efects as random efects and the fxed efects of contemporary group, formed by animals that had calved on the same farm year and season, and age of cow at calving as covariates (ftted as linear and quadratic efect). The heritability estimates for CW and MY305 were 0.21±0.06 and 0.29±0.04, respectively, and repeatability estimates were 0.49±0.03 and 0.49±0.02. The genetic correlation between CW and MY305 was positive and of low magnitude (0.33±0.18), indicating that selection for MY305 will cause little genetic change in the weights of dairy Gyr animals. The genetic trends of breeding values of analyzed traits showed marked genetic gains in MY305, with little changes in CW of dairy Gyr cows over the years in the herds studied, which is an important result considering the production systems adopted in the tropics.
650 $aGenetic correlation
650 $aHeritability
650 $aLactation
650 $aGado Leiteiro
650 $aGado Zebu
650 $aLactação
653 $aCorrelação genética
653 $aDairy Zebu
653 $aEfeito genético
653 $aGenetic efect
653 $aHerdabilidade
700 1 $aBERNARDES, P. A.
700 1 $aVERCESI FILHO, A. E.
700 1 $aPANETTO, J. C. do C.
700 1 $aEL FARO, L.
773 $tTropical Animal Health and Production$gv. 54, article 84, 2022.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro completo
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Biblioteca(s): |
Catálogo Coletivo de Periódicos Embrapa; Embrapa Amazônia Oriental. |
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Identificador: |
503 |
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Data corrente: |
09/05/2002 |
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Data da última atualização: |
12/05/2015 |
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Código do título: |
0901372 |
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ISSN: |
0100-1922 |
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Código CCN: |
003459-2 |
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Título e Subtítulo: |
ANAIS DA BIBLIOTECA NACIONAL |
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Título alternativo: |
ANAES DA BIBLIOTHECA NACIONAL |
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Entidade: |
Biblioteca Nacional do Rio de Janeiro |
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Local de publicação: |
Rio De Janeiro, RJ |
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Periodicidade: |
Anual |
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Inicio de publicação: |
1876 |
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Coleções da unidade: |
Embrapa Amazônia Oriental
1883 11; 1884/85 12; 1886 14(1-2); 1887/88 15(1/2); 1889/90 16(1-2); 1891/92 17; 1896 18; 1898 20; 1899 21; 1900 22; 1901 23; 1903 25; 1904 26; 1905 27; 1906 28; 1907 29; 1908 30; 1909 31; 1910 32; 1911 33; 1912 34; 1913 35; 1914 36; 1915 37; 1916 38; 1917 39; 1918 40; 1919 41; 1920 42; 1924 46; 1925 47; 1927 49; 1928 50; 1929 51; 1930 52; 1931 53; 1932 54; 1933 55; 1934 56; 1935 57; 1936 58; 1937 59; 1938 60; 1948 66, 67; 1949 68; 1950 69, 70; 1951 71, 72; 1953 74; 1954 73; 1955 75; 1956 76; 1957 77; 1958 78; 1959 79; 1960 80; 1962 82; 1963 83; 1964 84; 1965 85; 1966 86; 1967 87; 1968 88; 1969 89; 1970 90; 1971 91; 1972 92(3,6-8); 1973 93; 1974 94; 1975 95(1-2); 1976 96; 1977 97; 1978 98; 1980 100; 1981 101; 1982 102; 1983 103; 1985 105; 1986 106; 1987 107; 1988 108; 1989 109; 1990 110; 1991 111; 1992 112; 1993 113; 1994 114
Classificação: 981.05A6 |
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