|
|
Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
08/01/2016 |
Data da última atualização: |
03/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CAMPOS, R. V.; COBUCI, J. A.; KERN, E. L.; COSTA, C. N.; McMANUS, C. M. |
Afiliação: |
Rafael Viegas Campos; Jaime Araujo Cobuci; Elisandra Lurdes Kern; CLAUDIO NAPOLIS COSTA, CNPGL; Concepta Margaret McManus. |
Título: |
Genetic parameters for linear type traits and milk, fat, and protein production in holstein cows in Brazil. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Asian-Australasian Journal of Animal Sciences, v. 28, n. 4, p. 476-484, 2015. |
Idioma: |
Português |
Conteúdo: |
The objective of this study was to estimate genetic and phenotypic parameters for linear type traits, as well as milk yield (MY), fat yield (FY) and protein yield (PY) in 18,831 Holstein cows reared in 495 herds in Brazil. Restricted maximum likelihood with a bivariate model was used for estimation genetic parameters, including fixed effects of herd-year of classification, period of classification, classifier and stage of lactation for linear type traits and herd-year of calving, season of calving and lactation order effects for production traits. The age of cow at calving was fitted as a covariate (with linear and quadratic terms), common to both models. Heritability estimates varied from 0.09 to 0.38 for linear type traits and from 0.17 to 0.24 for production traits, indicating sufficient genetic variability to achieve genetic gain through selection. In general, estimates of genetic correlations between type and production traits were low, except for udder texture and angularity that showed positive genetic correlations (>0.29) with MY, FY, and PY. Udder depth had the highest negative genetic correlation (-0.30) with production traits. Selection for final score, commonly used by farmers as a practical selection tool to improve type traits, does not lead to significant improvements in production traits, thus the use of selection indices that consider both sets of traits (production and type) seems to be the most adequate to carry out genetic selection of animals in the Brazilian herd. MenosThe objective of this study was to estimate genetic and phenotypic parameters for linear type traits, as well as milk yield (MY), fat yield (FY) and protein yield (PY) in 18,831 Holstein cows reared in 495 herds in Brazil. Restricted maximum likelihood with a bivariate model was used for estimation genetic parameters, including fixed effects of herd-year of classification, period of classification, classifier and stage of lactation for linear type traits and herd-year of calving, season of calving and lactation order effects for production traits. The age of cow at calving was fitted as a covariate (with linear and quadratic terms), common to both models. Heritability estimates varied from 0.09 to 0.38 for linear type traits and from 0.17 to 0.24 for production traits, indicating sufficient genetic variability to achieve genetic gain through selection. In general, estimates of genetic correlations between type and production traits were low, except for udder texture and angularity that showed positive genetic correlations (>0.29) with MY, FY, and PY. Udder depth had the highest negative genetic correlation (-0.30) with production traits. Selection for final score, commonly used by farmers as a practical selection tool to improve type traits, does not lead to significant improvements in production traits, thus the use of selection indices that consider both sets of traits (production and type) seems to be the most adequate to carry out genetic selection of animals in the Braz... Mostrar Tudo |
Palavras-Chave: |
Functional Trait; Selection. |
Thesaurus Nal: |
dairy cattle; genetic correlation; heritability. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/136843/1/Cnpgl-2015-AJAS-Genetic.pdf
|
Marc: |
LEADER 02214naa a2200229 a 4500 001 2033399 005 2024-02-03 008 2015 bl uuuu u00u1 u #d 100 1 $aCAMPOS, R. V. 245 $aGenetic parameters for linear type traits and milk, fat, and protein production in holstein cows in Brazil.$h[electronic resource] 260 $c2015 520 $aThe objective of this study was to estimate genetic and phenotypic parameters for linear type traits, as well as milk yield (MY), fat yield (FY) and protein yield (PY) in 18,831 Holstein cows reared in 495 herds in Brazil. Restricted maximum likelihood with a bivariate model was used for estimation genetic parameters, including fixed effects of herd-year of classification, period of classification, classifier and stage of lactation for linear type traits and herd-year of calving, season of calving and lactation order effects for production traits. The age of cow at calving was fitted as a covariate (with linear and quadratic terms), common to both models. Heritability estimates varied from 0.09 to 0.38 for linear type traits and from 0.17 to 0.24 for production traits, indicating sufficient genetic variability to achieve genetic gain through selection. In general, estimates of genetic correlations between type and production traits were low, except for udder texture and angularity that showed positive genetic correlations (>0.29) with MY, FY, and PY. Udder depth had the highest negative genetic correlation (-0.30) with production traits. Selection for final score, commonly used by farmers as a practical selection tool to improve type traits, does not lead to significant improvements in production traits, thus the use of selection indices that consider both sets of traits (production and type) seems to be the most adequate to carry out genetic selection of animals in the Brazilian herd. 650 $adairy cattle 650 $agenetic correlation 650 $aheritability 653 $aFunctional Trait 653 $aSelection 700 1 $aCOBUCI, J. A. 700 1 $aKERN, E. L. 700 1 $aCOSTA, C. N. 700 1 $aMcMANUS, C. M. 773 $tAsian-Australasian Journal of Animal Sciences$gv. 28, n. 4, p. 476-484, 2015.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 31 | |
22. | | OELOFSE, M.; HOGH-JENSEN, H.; ABREU, L. S. de; ALMEIDA, G. F.; HUI, Q. Y.; SULTAN, T.; NEERGAARD, A. de. Certified organic agriculture in China and Brazil: Market accessibility and outcomes following adoption. Ecological Economics, v. 69, n. 9, p. 1785-1793, 2010.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Meio Ambiente. |
| |
23. | | CASTRO, M. E. B.; ALMEIDA, G. F.; PAULA, D. P.; RIBEIRO, Z. M. A.; SOUZA, M. L. Identificação e caracterização de um novo vírus patogênico à Mariposa-do-Álamo, Condylorrhiza vestigialis. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação: anais. Viçosa, MG: UFV, 2008. 1 CD-ROM.Tipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
25. | | OELOFSE, M.; HOGH-JENSEN, H.; ABREU, L. S. de; ALMEIDA, G. F.; EL-ARABY, A.; HUI, Q. Y.; NEERGAARD, A. de. A comparative study of farm nutrient budgets and nutrient flows of certified organic and non-organic farms in China, Brazil and Egypt. Nutrient Cycling in Agroecosystems, v. 87, n. 3, p. 455-470, 2010. 16 p.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Meio Ambiente. |
| |
26. | | MANZOLI, A.; ALMEIDA, G. F. B. de; FILHO, J. A.; MATTOSO, L. H. C.; RIUL JR, A.; MENDONCA, C. R.; CORREA, D. S. Femtosecond laser ablation of gold interdigitated electrodes for electronic tongues. Optics and laser technology, [S. l.], v. 69, p. 148-153, 2015.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
Biblioteca(s): Embrapa Instrumentação. |
| |
27. | | PAULA, K. T.; GAÁL, G.; ALMEIDA, G. F. B.; ANDRADE, M. B.; FACURE, M. H. M.; CORREA, D. S.; RIUL JUNIOR, A.; RODRIGUES, V.; MENDONÇA, C. R. Femtosecond laser micromachining of polylactic acid/graphene composites for designing interdigitated microelectrodes for sensor applications. Optics and Laser Technology, v. 101, p. 74-79, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Instrumentação. |
| |
28. | | CASTRO, M. E. B. de; PAULA, D. P.; ALMEIDA, G. F.; RIBEIRO, Z. M. de A.; SOUZA, M. L. de; INGLIS, P. W.; RIBEIRO, G. M. Identification and sequence analysis of the Condylorrhiza vestigialis MNPV p74 gene. Virus Genes, v. 43, p. 471-475, 2011.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
29. | | OELOFSE, M.; HOGH-JENSEN, H.; ABREU, L. S. de; ALMEIDA, G. F.; EL-ARABY, A.; HUI, Q. Y.; SULTAN, T.; NEERGAARD, A. de. Organic farm conventionalisation and farmer practices in China, Brazil and Egypt. Agronomy for Sustainable Development, Paris, v. 31, n. 4, p. 589-698, 2011.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Meio Ambiente. |
| |
30. | | OTUKA, A. J. G.; TRIBUZI, V.; CARDOSO, M. R.; ALMEIDA, G. F. B. de; ZANATTA, A. R.; CORREA, D. S.; MENDONÇA, C. R. Single-walled carbon nanotubes functionalized with carboxylic acid for fabricating polymeric composite microstructures. Journal of nanoscience and nanotechnology, Valencia, v. 15, n. 12, p. 9797-9801, 2015.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Instrumentação. |
| |
31. | | BARON, L. F.; FONSECA, F. M. da; MACIAG, S. S.; BELLAVER, F. A. V.; IBELLI, A. M. G.; MORES, M. A. Z.; ALMEIDA, G. F. de; GUTERRES, S. S.; BASTOS, A. P. A.; PAESE, K. Toltrazuril-loaded polymeric nanocapsules as a promising approach for the preventive control of coccidiosis in poultry. Pharmaceutics, v. 14, n. 392, 2022.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Suínos e Aves. |
| |
Registros recuperados : 31 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|