Data/hora: 10/06/2024 19:10:40

Provedor de dados: | 2
País: | Brazil

Título:

Recombinant Bovine Somatotropin (Rbst) on performance and body characteristics of creep-fed crossbred calves

Somatotropina Bovina Recombinante (rbST) no desempenho e características corporais de bezerros mestiços alimentados em creep-feeding

Autores: | Moreira, Paulo Sérgio Andrade; UFMT; Silveira, Antonio Carlos; UNESP; Arrigoni, Mário de Beni; UNESP; Chardulo, Luis Arthur Loyola; UNESP; Pai, Vitalino Dal; UNESP.
Data: | 2002-04-29
Ano: | 2002
Palavras-chave: | 5.04.00.00-2    Zootecnia carcaça; Crescimento animal; Gado de corte; Ganho de peso; Hormônio; Produção animal 5.04.00.00-2    Zootecnia.
Resumo: | This study aimed to evaluate performance and body characteristics of crossbred calves submitted to recombinant bovine somatotropin (rbST) and creep-feeding. Sixty-four animals aging 60 days were divided in four groups: T1 (16 heifers rbST), T2 (17 heifers control), T3 (15 steers rbST), T4 (16 steers control). Randomized factorial 2 x 2 design used as “A” sex and “B” rbST. The animals were fed in pasture “ad libitun” and creep. Every 14 days animals received rbST doses (0,15 mg kg/BW/day) from 60 until 210 days. Body weight and bone development were evaluated by weighting and measurement of ankle perimeter every 14 days. For Longissimus dorsi muscle area and thickness fat, ultrasonography at 150 and 210 days was used. Results showed no significant difference (P &gt; 0.05) among the steers for weight gain, but the heifers showed difference (p &lt; 0.05). For Longissimus muscle area steers showed a higher mean than heifers at 150 and 210 days however there was no difference between rbST animals and control, but for fat thickness it was observed significant difference (p &lt; 0.05) between heifers and steers. For bone growing there was no significant difference (p &gt; 0.05) between rbST animals and control but there was difference between sexes. Thus the use of rbST (0.15 mg/BW/day) increased by 9% the body weight of heifers creep-fed.
Idioma: | Português

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2531

10.4025/actascianimsci.v24i0.2531

Editor: | Editora da Universidade Estadual de Maringá
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 24 (2002); 1093-1097

Acta Scientiarum. Animal Sciences; v. 24 (2002); 1093-1097

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS  Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Animal Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).