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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/09/2007 |
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Data da última atualização: |
20/09/2007 |
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Autoria: |
OLIVIER, J. J.; CLOETE, S. W. P. |
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Título: |
Genetic analysis of the South African Dorper sheep. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Subjective assessment is emphasized in the breed improvement of South African Dorper sheep. Data from the National Small Stock Improvement Scheme yielded estimates of 0.19±0.02 for h², 0.10±0.02 for m² and 0.07±0.01 for c² in the case of weaning weight (WW). Estimates for post weaning weight (PWW) were 0.23±0.03 for h² and 0.14±0.02 for m². Estimates of h² for reproduction traits were low, ranging from 0.04 to 0.07. For the type traits, estimates of h2 were low for conformation (0.11) and type (0.10), while size was moderately heritable at 0.25±0.02. Conformation and type were favourably correlated to WW and PWW, the correlation rangingfrom low to moderate. These traits were unfavourably correlated to TWW. Realised genetic trends (per annum) were 0.009 kg for direct WW, 0.009 kg for maternal WW, 0.11 kg for PWW and -0.03 kg lamb per ewe lambed for TWW. It seems reasonable that slow genetic gains in production traits (and a lack of progress in reproduction) could be attributed to type traits being overly accentuated. |
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Palavras-Chave: |
Análise genética; Raça Dorper. |
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Thesagro: |
Melhoramento Genético Animal; Ovino. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01653naa a2200181 a 4500
001 1521863
005 2007-09-20
008 2006 bl uuuu u00u1 u #d
100 1 $aOLIVIER, J. J.
245 $aGenetic analysis of the South African Dorper sheep.
260 $c2006
520 $aSubjective assessment is emphasized in the breed improvement of South African Dorper sheep. Data from the National Small Stock Improvement Scheme yielded estimates of 0.19±0.02 for h², 0.10±0.02 for m² and 0.07±0.01 for c² in the case of weaning weight (WW). Estimates for post weaning weight (PWW) were 0.23±0.03 for h² and 0.14±0.02 for m². Estimates of h² for reproduction traits were low, ranging from 0.04 to 0.07. For the type traits, estimates of h2 were low for conformation (0.11) and type (0.10), while size was moderately heritable at 0.25±0.02. Conformation and type were favourably correlated to WW and PWW, the correlation rangingfrom low to moderate. These traits were unfavourably correlated to TWW. Realised genetic trends (per annum) were 0.009 kg for direct WW, 0.009 kg for maternal WW, 0.11 kg for PWW and -0.03 kg lamb per ewe lambed for TWW. It seems reasonable that slow genetic gains in production traits (and a lack of progress in reproduction) could be attributed to type traits being overly accentuated.
650 $aMelhoramento Genético Animal
650 $aOvino
653 $aAnálise genética
653 $aRaça Dorper
700 1 $aCLOETE, S. W. P.
773 $tIn: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | PHILLIPS, O. L.; BAKER, T. R.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURENCE, W. F.; LEWIS, S. L.; LLOYD, J.; MALHI, Y.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; SILVA, J. N. M.; TERBORGH, J.; MARTÍNEZ, R. V.; ALEXIADES, M.; ALMEIDA, S.; BROWN, S.; CHAVES, J.; COMISKEY, J. A.; CZIMCZIK, C. I.; DI FIORE, A.; ERWIN, T.; KUEBLER, C.; LAURANCE, S. G.; NASCIMENTO, H. E. M.; OLIVIER, J.; PALACIOS, W.; PATIÑO, S.; PITMAN, N. C. A.; QUESADA, C. A.; SALDIAS, M.; LEZAMA, A. T.; VINCETI, B. Pattern and process in Amazon tree turnover, 1976-2001. Philippine Transactions of Royal Society of London. B, v. 359, n. 1443, p. 381-407, 2004.| Biblioteca(s): Embrapa Amazônia Oriental. |
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