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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | University of California | - |
Autor(es): dc.contributor | Universidade Federal da Paraíba (UFPB) | - |
Autor(es): dc.contributor | University of New England | - |
Autor(es): dc.creator | Almeida, A. K. [UNESP] | - |
Autor(es): dc.creator | Kebreab, E. | - |
Autor(es): dc.creator | Resende, K. T. [UNESP] | - |
Autor(es): dc.creator | Medeiros, A. N. | - |
Autor(es): dc.creator | Teixeira, I. A.M.A. [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:34:06Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:34:06Z | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2019-12-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1017/S1751731120000348 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/201635 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/201635 | - |
Descrição: dc.description | Goat genotype may alter the net energy and protein requirements for maintenance (NEm and NPm, respectively) and weight gain (NEg and NPg).This study was designed to investigate and quantify the effect of goat type on NEm, NPm, NEg and NPg, and quantify the net requirements for energy and protein for dairy, meat and indigenous growing male goats. For that, comparative slaughter studies were gathered and a meta-analytical approach was used. Two distinct databases were organized: one composed of 233 individual records from 11 studies of meat (n = 81), dairy (n = 97) and indigenous (n = 55) growing male goats weighing from 4.50 to 51.0 kg, to depict NEm and NPm; and another database composed of 239 individual records from nine studies of meat (n = 87), dairy (n = 97) and indigenous (n = 55) growing male goats weighing from 4.30 to 51.0 kg, to depict NEg and NPg. Our findings showed that NEm of meat goats was 8.5% greater (336 ± 10.8 kJ/kg0.75 of empty BW; EBW) than dairy and indigenous goats (310 ± 8.20 kJ/kg0.75 EBW; P < 0.05). Whereas, NPm was not affected by goat type (1.92 ± 0.239 g/kg EBW; P = 0.91). The NPg was 185.1 ± 1.82 g/kg of EBW gain for goats weighing 5 kg BW and 192.5 ± 4.33 g/kg of EBW gain for goats weighing 45 kg BW, and thus did not change across goat type (P = 0.12). On the other hand, NEg increased from 7.29 ± 0.191 to 11.9 ± 0.386 MJ/kg of EBW in male dairy goats, and from 7.32 ± 0.144 to 15.7 ± 0.537 MJ/kg of EBW in meat and indigenous growing male goats weighing between 5 and 45 kg BW. When body protein was used as a predictor in the allometric equation instead of EBW seeking to account for the degree of maturity, goat type differences disappeared; however, this predictor showed a high variation among individuals. In conclusion, energy and protein requirements for gain in distinct goat types reflect on body composition differences. Future research should focus on better understanding the maturity degree and its consequences in the energy requirement of growing male goats and better depict the goat type effect on it, as well as on the efficiency of utilization. | - |
Descrição: dc.description | Department of Animal Science UNESP - Universidade Estadual Paulista | - |
Descrição: dc.description | Department of Animal Science University of California | - |
Descrição: dc.description | Department of Animal Science Universidade Federal da Paraíba | - |
Descrição: dc.description | School of Environmental and Rural Science University of New England | - |
Descrição: dc.description | Department of Animal Science UNESP - Universidade Estadual Paulista | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Animal | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | body composition | - |
Palavras-chave: dc.subject | comparative slaughter | - |
Palavras-chave: dc.subject | goat type | - |
Palavras-chave: dc.subject | Keywords: | - |
Palavras-chave: dc.subject | meta-analysis | - |
Palavras-chave: dc.subject | nutritional requirements | - |
Título: dc.title | Genotype effects on energy and protein requirements in growing male goats | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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