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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
21/02/2018 |
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Data da última atualização: |
21/02/2018 |
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Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
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Autoria: |
GORAGA, Z. S.; MENGESHA, M.; LIMA, G. J. M. M. de. |
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Afiliação: |
ZEMELAK S. GORAGA, Ethiopian Institute of Agricultural Research at DZARC; MAMMO MENGESHA, University of Berlin; GUSTAVO JULIO MELLO M DE LIMA, CNPSA. |
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Título: |
Traditional swine production, productivity and managemente in Africa: the case of Ethiopia. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Balti: Éditions Universitaires Européenes, 2017. |
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Páginas: |
85 p. |
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Idioma: |
Inglês |
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Conteúdo: |
This book provides an overall information on the socio-economic characteristics of swine producers, production systems, feeding, breed features, production and reproductive performance, breeding practice and constraints in the value chain. Our findings presented in this book were compared with the findings of similar studies conducted in different African countries so that the overall information presented in this book can represent the overall image of the swine production and its management practices in Africa. The Average reproductive performances of swine herds for age at first puberty, litter size and gestation length were ranged from 9 ? 10 (months), 8 ? 10 (piglets per farrowing) and 3 to 3.5 (months), respectively. The overall information provided in the book can support designing of community based breeding program which takes into consideration the breed selection criteria of the swine producers and the reproductive performance of the breeds in Africa. Furthermore, the key information generated from this study could support for developing research and development intervention strategies aiming to improve the swine sector and its economic benefit in the continent. |
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Thesagro: |
Manejo; Produção animal; Suíno. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01725nam a2200181 a 4500
001 2087999
005 2018-02-21
008 2017 bl uuuu 00u1 u #d
100 1 $aGORAGA, Z. S.
245 $aTraditional swine production, productivity and managemente in Africa$bthe case of Ethiopia.$h[electronic resource]
260 $aBalti: Éditions Universitaires Européenes$c2017
300 $a85 p.
520 $aThis book provides an overall information on the socio-economic characteristics of swine producers, production systems, feeding, breed features, production and reproductive performance, breeding practice and constraints in the value chain. Our findings presented in this book were compared with the findings of similar studies conducted in different African countries so that the overall information presented in this book can represent the overall image of the swine production and its management practices in Africa. The Average reproductive performances of swine herds for age at first puberty, litter size and gestation length were ranged from 9 ? 10 (months), 8 ? 10 (piglets per farrowing) and 3 to 3.5 (months), respectively. The overall information provided in the book can support designing of community based breeding program which takes into consideration the breed selection criteria of the swine producers and the reproductive performance of the breeds in Africa. Furthermore, the key information generated from this study could support for developing research and development intervention strategies aiming to improve the swine sector and its economic benefit in the continent.
650 $aManejo
650 $aProdução animal
650 $aSuíno
700 1 $aMENGESHA, M.
700 1 $aLIMA, G. J. M. M. de
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Embrapa Suínos e Aves (CNPSA) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
14/01/2019 |
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Data da última atualização: |
24/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
KERN, E. L.; COBUCI, J. A.; COSTA, C. N.; DUCROCQ, V. |
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Afiliação: |
Elisandra Lurdes Kern, UFRGS; Jaime Araujo Cobuci, UFRGS; CLAUDIO NAPOLIS COSTA, CNPGL; Vincent Ducrocq, French National Institute for Agricultural Research. |
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Título: |
Phenotypic relationships between type traits and productive life using a piecewise Weibull proportional hazard model. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Scientia Agricola, v. 75, n. 6, p. 470-478, 2018. |
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DOI: |
10.1590/1678-992X-2017-0153 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Longevity is an important trait due to its relationship with profitability. Type traits have been used as indirect predictors for productive life. The objective of this study was to evaluate the relationship of 20 type traits on length of productive life in Brazilian Holsteins, using a piecewise Weibull proportional hazard model. Three analyses were performed i) productive life was corrected for within herd level of production as a proxy for functional longevity, which included the time-dependent effects of region within year, class of milk production within herdyear, milk production class within lactation number, fat class and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving and the type trait score; ii) the effects related to production were omitted from the first model (true longevity) and iii) with the first model, the effect of type was also studied considering five classes of percentage of type-scored cows within the herd. All analyses were performed using the Survival Kit program. The final score, angularity, top line, udder texture and suspensory ligament showed the strongest relationship with productive life. When type traits were available only for a small fraction of the herd, the cows had a better chance of remaining longer in the herd. The absence of type trait phenotypes was associated with a strong increase of culling risk for the cows. Type traits were not found to be good indirect predictors of productive life in Brazil. MenosABSTRACT: Longevity is an important trait due to its relationship with profitability. Type traits have been used as indirect predictors for productive life. The objective of this study was to evaluate the relationship of 20 type traits on length of productive life in Brazilian Holsteins, using a piecewise Weibull proportional hazard model. Three analyses were performed i) productive life was corrected for within herd level of production as a proxy for functional longevity, which included the time-dependent effects of region within year, class of milk production within herdyear, milk production class within lactation number, fat class and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving and the type trait score; ii) the effects related to production were omitted from the first model (true longevity) and iii) with the first model, the effect of type was also studied considering five classes of percentage of type-scored cows within the herd. All analyses were performed using the Survival Kit program. The final score, angularity, top line, udder texture and suspensory ligament showed the strongest relationship with productive life. When type traits were available only for a small fraction of the herd, the cows had a better chance of remaining longer in the herd. The absence of type trait phenotypes was associated with a strong increase of culling risk for the cows. Type traits were not found to be good... Mostrar Tudo |
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Palavras-Chave: |
Conformation traits; Culling risk; Survival analysis. |
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Thesaurus NAL: |
Dairy cattle; Longevity. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190361/1/Artigo-SciAgricola-Claudio-Phenotypic.pdf
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Marc: |
LEADER 02250naa a2200229 a 4500
001 2103810
005 2023-01-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1590/1678-992X-2017-0153$2DOI
100 1 $aKERN, E. L.
245 $aPhenotypic relationships between type traits and productive life using a piecewise Weibull proportional hazard model.$h[electronic resource]
260 $c2018
520 $aABSTRACT: Longevity is an important trait due to its relationship with profitability. Type traits have been used as indirect predictors for productive life. The objective of this study was to evaluate the relationship of 20 type traits on length of productive life in Brazilian Holsteins, using a piecewise Weibull proportional hazard model. Three analyses were performed i) productive life was corrected for within herd level of production as a proxy for functional longevity, which included the time-dependent effects of region within year, class of milk production within herdyear, milk production class within lactation number, fat class and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving and the type trait score; ii) the effects related to production were omitted from the first model (true longevity) and iii) with the first model, the effect of type was also studied considering five classes of percentage of type-scored cows within the herd. All analyses were performed using the Survival Kit program. The final score, angularity, top line, udder texture and suspensory ligament showed the strongest relationship with productive life. When type traits were available only for a small fraction of the herd, the cows had a better chance of remaining longer in the herd. The absence of type trait phenotypes was associated with a strong increase of culling risk for the cows. Type traits were not found to be good indirect predictors of productive life in Brazil.
650 $aDairy cattle
650 $aLongevity
653 $aConformation traits
653 $aCulling risk
653 $aSurvival analysis
700 1 $aCOBUCI, J. A.
700 1 $aCOSTA, C. N.
700 1 $aDUCROCQ, V.
773 $tScientia Agricola$gv. 75, n. 6, p. 470-478, 2018.
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