|
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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
10/08/1999 |
Data da última atualização: |
04/04/2012 |
Autoria: |
FIGUEIREDO, E. A. P. de. |
Título: |
Potential breeding plans developed from observed genetic parameters and simulated genotypes for Morada Nova sheep in northeast Brazil. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
College Station: Texas A & M University, 1986. |
Páginas: |
178p. |
Idioma: |
Inglês |
Notas: |
Tese Doutorado. Contem informacoes tecnicas fornecidas pela Embrapa Caprinos. |
Conteúdo: |
Analyses of the environmental factors and estimation of the genetic parameters concerning characters related to the Morada Nova breed, were conducted. A simulation experiment with a factorial structure of three genetic potentials for mature size (WMA) (30, 40 and 50 kg), three .genetic potentials for milk production (GMLKL) (1.125, 1.500 and 1.875 kg of milk per ewe at the peak day of lactation) and three genetic potentials for ovulation rate (OVR) (1.65, 2.20 and 2.75 ova per ovulation), for a total of 27 genotypic combinations, was also conducted. Data were obtained from 1669 lambs sired by 88 rams, and out of 560 ewes and from 2128 ewe records from the Morada Nova flock at Iracema Farm - EPACE - Quixada, Ceara, Brazil, from 1979 to 1985. The characters studied were age and weight at the first estrus cycle (AFEC and WFEC, respectively), breeding rate (B), lambing rate (1), prolificacy (T), weaning rate (W), total weight born (TWB), total weight weaned (TWW), breeding weight (WB), lambing weight (LW), ; birth weight (BW), weaning weight (WW), seven-month weight (7MW), yearling weight (YW), slaughter age (SA) and preweaning survivability (S) . The parameters estimated were heritability, repeatability and genetic and phenotypic correlations. The estimates of heritability were .20+.O6, .33+.O8, 19+O9 and 30t.O9 for BW, WW, 7MW and YW, respectively, and .52+34, .22+3l, 24+3l, 06+29, .33+32, .14+5l and .66t.30 for WB, LW, L, W, TWB, TWW and T, respectively. The simulation results indicated that efficiency of sheep meat production for Northeast Brazil (total weight sold/total dry matter consumed by the flock/year) increases with increases in genetic potential for ovulation rate and with increases in genetic potential increasing genetic for mature size as compared to the characteristics of the base genotype. The most efficient simulated genotype was the one with medium WMA, medium GMLKL and high OVR, followed closely by the genotypes with medium WMA, low GMLKL and high OVR, and by low WMA, medium GMLKL and high OVR. Selection indices were constructed to rank individuals based on a range of available information on their own performance, as well as on their relatives to estimate breeding values for prolificacy and for weaning weight (direct and maternal). MenosAnalyses of the environmental factors and estimation of the genetic parameters concerning characters related to the Morada Nova breed, were conducted. A simulation experiment with a factorial structure of three genetic potentials for mature size (WMA) (30, 40 and 50 kg), three .genetic potentials for milk production (GMLKL) (1.125, 1.500 and 1.875 kg of milk per ewe at the peak day of lactation) and three genetic potentials for ovulation rate (OVR) (1.65, 2.20 and 2.75 ova per ovulation), for a total of 27 genotypic combinations, was also conducted. Data were obtained from 1669 lambs sired by 88 rams, and out of 560 ewes and from 2128 ewe records from the Morada Nova flock at Iracema Farm - EPACE - Quixada, Ceara, Brazil, from 1979 to 1985. The characters studied were age and weight at the first estrus cycle (AFEC and WFEC, respectively), breeding rate (B), lambing rate (1), prolificacy (T), weaning rate (W), total weight born (TWB), total weight weaned (TWW), breeding weight (WB), lambing weight (LW), ; birth weight (BW), weaning weight (WW), seven-month weight (7MW), yearling weight (YW), slaughter age (SA) and preweaning survivability (S) . The parameters estimated were heritability, repeatability and genetic and phenotypic correlations. The estimates of heritability were .20+.O6, .33+.O8, 19+O9 and 30t.O9 for BW, WW, 7MW and YW, respectively, and .52+34, .22+3l, 24+3l, 06+29, .33+32, .14+5l and .66t.30 for WB, LW, L, W, TWB, TWW and T, respectively. The simulation result... Mostrar Tudo |
Palavras-Chave: |
Brasil; Morada Nova; Nordeste. |
Thesagro: |
Genótipo; Melhoramento Genético Animal; Ovino; Parâmetro Genético. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03003nam a2200217 a 4500 001 1515182 005 2012-04-04 008 1986 bl uuuu m 00u1 u #d 100 1 $aFIGUEIREDO, E. A. P. de 245 $aPotential breeding plans developed from observed genetic parameters and simulated genotypes for Morada Nova sheep in northeast Brazil. 260 $aCollege Station: Texas A & M University$c1986 300 $a178p. 500 $aTese Doutorado. Contem informacoes tecnicas fornecidas pela Embrapa Caprinos. 520 $aAnalyses of the environmental factors and estimation of the genetic parameters concerning characters related to the Morada Nova breed, were conducted. A simulation experiment with a factorial structure of three genetic potentials for mature size (WMA) (30, 40 and 50 kg), three .genetic potentials for milk production (GMLKL) (1.125, 1.500 and 1.875 kg of milk per ewe at the peak day of lactation) and three genetic potentials for ovulation rate (OVR) (1.65, 2.20 and 2.75 ova per ovulation), for a total of 27 genotypic combinations, was also conducted. Data were obtained from 1669 lambs sired by 88 rams, and out of 560 ewes and from 2128 ewe records from the Morada Nova flock at Iracema Farm - EPACE - Quixada, Ceara, Brazil, from 1979 to 1985. The characters studied were age and weight at the first estrus cycle (AFEC and WFEC, respectively), breeding rate (B), lambing rate (1), prolificacy (T), weaning rate (W), total weight born (TWB), total weight weaned (TWW), breeding weight (WB), lambing weight (LW), ; birth weight (BW), weaning weight (WW), seven-month weight (7MW), yearling weight (YW), slaughter age (SA) and preweaning survivability (S) . The parameters estimated were heritability, repeatability and genetic and phenotypic correlations. The estimates of heritability were .20+.O6, .33+.O8, 19+O9 and 30t.O9 for BW, WW, 7MW and YW, respectively, and .52+34, .22+3l, 24+3l, 06+29, .33+32, .14+5l and .66t.30 for WB, LW, L, W, TWB, TWW and T, respectively. The simulation results indicated that efficiency of sheep meat production for Northeast Brazil (total weight sold/total dry matter consumed by the flock/year) increases with increases in genetic potential for ovulation rate and with increases in genetic potential increasing genetic for mature size as compared to the characteristics of the base genotype. The most efficient simulated genotype was the one with medium WMA, medium GMLKL and high OVR, followed closely by the genotypes with medium WMA, low GMLKL and high OVR, and by low WMA, medium GMLKL and high OVR. Selection indices were constructed to rank individuals based on a range of available information on their own performance, as well as on their relatives to estimate breeding values for prolificacy and for weaning weight (direct and maternal). 650 $aGenótipo 650 $aMelhoramento Genético Animal 650 $aOvino 650 $aParâmetro Genético 653 $aBrasil 653 $aMorada Nova 653 $aNordeste
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Embrapa Caprinos e Ovinos (CNPC) |
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Registros recuperados : 79 | |
2. | | MATZENAUER, R.; WESTPHALEN, S. L.; BERGAMASCHI, H. Relações entre a evapotranspiração do milho, radiação global e saldo de radiação. Pesquisa Agropecuária Brasileira, Brasília, V.17, n.7, p. 1051-1056, jul. 1982. Título em inglês: Relationships between evapotranspiration of corn, solar radiation and net radiation.Biblioteca(s): Embrapa Unidades Centrais. |
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4. | | MATZENAUER, R.; RADIN, B.; ALMEIDA, I. R. de (ed.). Atlas climático do Rio Grande do Sul. [S.l.]: Centro Estadual de Meteorologia, [2011?]. e-book. Autores: Marcos Silveira Wrege, Silvio Steinmetz, Ronaldo Matzenauer, Bernadete Radim, Ivan Rodrigues de Almeida, Carlos Reisser Júnior, Jaime Ricardo Tavares Maluf, Aristides Camara Bueno, Aldemir Pasinato, Gilberto Rocca da Cunha,...Tipo: Autoria/Organização/Edição de Livros |
Biblioteca(s): Embrapa Clima Temperado; Embrapa Florestas. |
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11. | | CARGNELUTTI FILHO, A.; RADIN, B.; MATZENAUER, R.; STORCK, L. Número de colheitas e comparação de genótipos de tomateiro cultivados em estufa de plástico. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 10, p. 953-959, out. 2004 Título em inglês: Number of harvests and comparison of tomato genotypes cultivated under plastic greenhouse.Biblioteca(s): Embrapa Unidades Centrais. |
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15. | | CARGNELUTTI FILHO, A.; MALUF, J. R. T.; MATZENAUER, R.; STOLZ, A. P. Altitude e coordenadas geográficas na estimativa da temperatura mínima média decendial do ar no Estado do Rio Grande do Sul. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 6, p. 893-901, jun. 2006.Biblioteca(s): Embrapa Trigo; Embrapa Unidades Centrais. |
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17. | | RADIN, B.; BERGAMASCHI, H.; REISSER JUNIOR, C.; BARNI, N. A.; MATZENAUER, R.; DIDONÉ, I. A. Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 9, p. 1017-1023, set. 2003 Título em inglês: Use efficiency of photosynthetically active radiation by tomato plants grown in different environments.Biblioteca(s): Embrapa Unidades Centrais. |
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20. | | STEINMETZ, S.; ALMEIDA, I. R. de; REISSER JUNIOR, C.; MATZENAUER, R.; RADIN, B.; PRESTES, S. D. Risco de frio no período reprodutivo do arroz irrigado no estado do Rio Grande do Sul, e sua relação com o aquecimento global. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável. Belo Horizonte: SBA: UFV: Embrapa Milho e Sorgo, 2009. 1 CD-ROMTipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Clima Temperado. |
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Registros recuperados : 79 | |
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