Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade de São Paulo (USP) | - |
Autor(es): dc.contributor | Federal University of Amazonas | - |
Autor(es): dc.contributor | Texas A&M University | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.creator | Miszura, A. A. | - |
Autor(es): dc.creator | Ferraz, M. V.C. | - |
Autor(es): dc.creator | Cardoso, R. C. | - |
Autor(es): dc.creator | Polizel, D. M. | - |
Autor(es): dc.creator | Oliveira, G. B. | - |
Autor(es): dc.creator | Barroso, J. P.R. | - |
Autor(es): dc.creator | Gobato, L. G.M. | - |
Autor(es): dc.creator | Nogueira, G. P. [UNESP] | - |
Autor(es): dc.creator | Biava, J. S. | - |
Autor(es): dc.creator | Ferreira, E. M. | - |
Autor(es): dc.creator | Pires, A. V. | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:43:35Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:43:35Z | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2020-12-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.domaniend.2020.106526 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/205154 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/205154 | - |
Descrição: dc.description | This study investigated the effects of growth rates and compensatory growth on puberty attainment in Nellore heifers. Nellore heifers (n = 120), weaned at 8 ± 0.75 mo of age, were blocked by sire and BW (180 ± 8.6 kg) and assigned randomly to receive 1 of 4 treatments over a 10-mo period. Treatments included ad libitum feeding (high gain, HG), feed intake to gain 0.6 kg/d (medium gain, MG), restricted feeding (0.2 kg/d) for 4 mo followed by ad libitum feeding for 6 mo (compensatory gain, CG), and alternating periods of ad libitum and restricted feeding for 2 mo each throughout the trial (alternated CG, ACG). Puberty was assessed weekly by transrectal ultrasonography. Blood samples were collected at 8, 11, and 18 mo of age and at puberty to determine circulating concentrations of leptin. At 18 mo of age, nonpubertal heifers were treated with a puberty induction protocol using an intravaginal progestin device. There was no treatment effect (P = 0.17) on the percentage of heifers pubertal by 18 mo of age (HG: 66, MG: 40, CG: 58, and ACG: 52%), BW at puberty, and age at puberty. However, HG heifers had higher ADG (P < 0.01), dry matter intake (P < 0.01), and leptin concentrations (P = 0.03) than heifers from other groups. The response to the puberty induction protocol was similar (P = 0.90) among treatments. Regarding sire effects (genetic effects), there was an effect (P = 0.03) on the percentage of heifers pubertal by 18 mo of age and a tendency (P = 0.07) of sire effect in response to the puberty induction protocol. Compensatory growth appears to be an effective managerial approach to decrease feeding costs and stimulate puberty in Nellore heifers. | - |
Descrição: dc.description | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
Descrição: dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
Descrição: dc.description | Department of Nutrition and Animal Production College of Veterinary and Animal Science University of São Paulo, Duque de Caxias North Avenue, n 225 | - |
Descrição: dc.description | Department of Animal Science Federal University of Amazonas, Macurany Avenue, Jacareacanga | - |
Descrição: dc.description | Department of Animal Science Texas A&M University, 2471 TAMU | - |
Descrição: dc.description | Department of Animal Science College of Agriculture “Luiz de Queiroz” University of São Paulo, Pádua Dias Avenue, n 11, PO Box 09 | - |
Descrição: dc.description | College of Veterinary Medicine São Paulo State University (UNESP) | - |
Descrição: dc.description | College of Veterinary Medicine São Paulo State University (UNESP) | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Domestic Animal Endocrinology | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | Bos indicus | - |
Palavras-chave: dc.subject | Cattle growth | - |
Palavras-chave: dc.subject | Genetics | - |
Palavras-chave: dc.subject | Leptin | - |
Palavras-chave: dc.subject | Puberty | - |
Título: dc.title | Implications of growth rates and compensatory growth on puberty attainment in Nellore heifers | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: