|
|
Registro Completo |
Biblioteca(s): |
Embrapa Suínos e Aves. |
Data corrente: |
15/05/2017 |
Data da última atualização: |
17/07/2019 |
Tipo da produção científica: |
Artigo de Divulgação na Mídia |
Autoria: |
DUARTE, S. C.; RAUECKER, U. N.; REZENDE, C. S. M. |
Afiliação: |
SABRINA CASTILHO DUARTE, CNPSA; URSULA NUNES RAUECKER, UFG; CÍNTIA SILVA MINAFRA REZENDE, UFG. |
Título: |
Mecanismos de invasão do ovo por Salmonela sp. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Avicultura Industrial, Itu, ed. 1263, ano 108, n. 2, p. 16-21, 2017. |
Idioma: |
Português |
Conteúdo: |
Com o intuito de gerar melhor compreensão da dinâmica de infecção por Salmonella sp. no trato reprodutor de poedeiras reunimos algumas informações acerca dos principais mecanismos envolvidos na persistência da bactéria no trato reprodutivo de poedeiras e os elementos envolvidos na contaminação de ovos. |
Palavras-Chave: |
Contaminação de ovos; Poedeira; Produção de ovos. |
Thesagro: |
Galinha para postura; Reprodução animal; Salmonella. |
Thesaurus Nal: |
Egg production. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/159860/1/final8465.pdf
|
Marc: |
LEADER 00956nam a2200217 a 4500 001 2069583 005 2019-07-17 008 2017 bl uuuu u00u1 u #d 100 1 $aDUARTE, S. C. 245 $aMecanismos de invasão do ovo por Salmonela sp.$h[electronic resource] 260 $aAvicultura Industrial, Itu, ed. 1263, ano 108, n. 2, p. 16-21, 2017.$c2017 520 $aCom o intuito de gerar melhor compreensão da dinâmica de infecção por Salmonella sp. no trato reprodutor de poedeiras reunimos algumas informações acerca dos principais mecanismos envolvidos na persistência da bactéria no trato reprodutivo de poedeiras e os elementos envolvidos na contaminação de ovos. 650 $aEgg production 650 $aGalinha para postura 650 $aReprodução animal 650 $aSalmonella 653 $aContaminação de ovos 653 $aPoedeira 653 $aProdução de ovos 700 1 $aRAUECKER, U. N. 700 1 $aREZENDE, C. S. M.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Suínos e Aves (CNPSA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
14/01/2019 |
Data da última atualização: |
24/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
AZEVEDO JUNIOR, J.; GONÇALVES, T. de M.; SOUZA, J. C. de; RODRIGUEZ, M. A. P.; COSTA, C. N.; CARVALHEIRA, J. G. V. |
Afiliação: |
Jairo Azevedo Junior, UFLA; Tarcisio de Moraes Gonçalves, UFLA; José Camisão de Souza, UFLA; Mary Ana Petersen Rodriguez, Universidade Estadual de Montes Claros; CLAUDIO NAPOLIS COSTA, CNPGL; Julio Gil Vale Carvalheira, Universidade do Porto, Portugal. |
Título: |
Adjustment of lactation curves of Holstein cows from herds of Minas Gerais, Brazil. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Journal of Agricultural Science, v. 10, n. 2, 2018. |
Páginas: |
14 p. |
DOI: |
10.5539/jas.v10n2p1 |
Idioma: |
Inglês |
Conteúdo: |
Abstract Random regression models (RRM) differ in terms of the functions used to describe the shape of lactation curves. The aim was to compare random regression models under different functions to describe the lactation curves from Holstein cows in herds of the state of Minas Gerais. A database of 28,118 production records was analyzed using the test-day records of 4,230 first parity cows from five herds. The Wilmink, Ali & Schaeffer and Legendre polynomial (orders 4, 5 and 6) functions were adjusted in RRM to model the mean production trend (fixed) and genetic and permanent environmental (random) effects. The residual variances were assumed to be constant throughout lactation. Analyses were performed using the AIREMLF90 program. Except for the model with the polynomial function of order 5, all models converged. The Wilmink function showed lower values for criteria based on the -2log (L), AIC and BIC. The model with the Legendre polynomial of order 6 showed lower residual variance. Heritability estimates were similar between functions, ranging from 0.07 to 0.18 and were higher from 215 days of lactation. From 155 days of lactation, genetic and permanent environmental correlations between successive controls are of high magnitude. The Wilmink function is the most suitable for the study of milk yields from primiparous Holstein cows. The selection of animals is possible from 155 days of lactation on. Permanent environmental effects have greater influence on the milk production at the end of lactation of primiparous cows and should be considered since they are important and may be cumulative throughout lactation. MenosAbstract Random regression models (RRM) differ in terms of the functions used to describe the shape of lactation curves. The aim was to compare random regression models under different functions to describe the lactation curves from Holstein cows in herds of the state of Minas Gerais. A database of 28,118 production records was analyzed using the test-day records of 4,230 first parity cows from five herds. The Wilmink, Ali & Schaeffer and Legendre polynomial (orders 4, 5 and 6) functions were adjusted in RRM to model the mean production trend (fixed) and genetic and permanent environmental (random) effects. The residual variances were assumed to be constant throughout lactation. Analyses were performed using the AIREMLF90 program. Except for the model with the polynomial function of order 5, all models converged. The Wilmink function showed lower values for criteria based on the -2log (L), AIC and BIC. The model with the Legendre polynomial of order 6 showed lower residual variance. Heritability estimates were similar between functions, ranging from 0.07 to 0.18 and were higher from 215 days of lactation. From 155 days of lactation, genetic and permanent environmental correlations between successive controls are of high magnitude. The Wilmink function is the most suitable for the study of milk yields from primiparous Holstein cows. The selection of animals is possible from 155 days of lactation on. Permanent environmental effects have greater influence on the milk production... Mostrar Tudo |
Palavras-Chave: |
Models comparison; Permanent environmental effects; Random regression model. |
Thesaurus NAL: |
Dairy cattle; Heritability. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190401/1/Artigo-JAgrSci-Claudio-Adjustment.pdf
|
Marc: |
LEADER 02438naa a2200265 a 4500 001 2103873 005 2023-01-24 008 2018 bl uuuu u00u1 u #d 024 7 $a10.5539/jas.v10n2p1$2DOI 100 1 $aAZEVEDO JUNIOR, J. 245 $aAdjustment of lactation curves of Holstein cows from herds of Minas Gerais, Brazil.$h[electronic resource] 260 $c2018 300 $a14 p. 520 $aAbstract Random regression models (RRM) differ in terms of the functions used to describe the shape of lactation curves. The aim was to compare random regression models under different functions to describe the lactation curves from Holstein cows in herds of the state of Minas Gerais. A database of 28,118 production records was analyzed using the test-day records of 4,230 first parity cows from five herds. The Wilmink, Ali & Schaeffer and Legendre polynomial (orders 4, 5 and 6) functions were adjusted in RRM to model the mean production trend (fixed) and genetic and permanent environmental (random) effects. The residual variances were assumed to be constant throughout lactation. Analyses were performed using the AIREMLF90 program. Except for the model with the polynomial function of order 5, all models converged. The Wilmink function showed lower values for criteria based on the -2log (L), AIC and BIC. The model with the Legendre polynomial of order 6 showed lower residual variance. Heritability estimates were similar between functions, ranging from 0.07 to 0.18 and were higher from 215 days of lactation. From 155 days of lactation, genetic and permanent environmental correlations between successive controls are of high magnitude. The Wilmink function is the most suitable for the study of milk yields from primiparous Holstein cows. The selection of animals is possible from 155 days of lactation on. Permanent environmental effects have greater influence on the milk production at the end of lactation of primiparous cows and should be considered since they are important and may be cumulative throughout lactation. 650 $aDairy cattle 650 $aHeritability 653 $aModels comparison 653 $aPermanent environmental effects 653 $aRandom regression model 700 1 $aGONÇALVES, T. de M. 700 1 $aSOUZA, J. C. de 700 1 $aRODRIGUEZ, M. A. P. 700 1 $aCOSTA, C. N. 700 1 $aCARVALHEIRA, J. G. V. 773 $tJournal of Agricultural Science$gv. 10, n. 2, 2018.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|