Data/hora: 06/06/2024 01:35:43

Provedor de dados: 	2	
País: 	Brazil	
Título: 	Breed and selection line differences in the temperament of beef cattle - doi: 10.4025/actascianimsci.v35i2.16426

Breed and selection line differences in the temperament of beef cattle - doi: 10.4025/actascianimsci.v35i2.16426	
Autores: 	Piovezan, Ubiratan; Empresa Brasileira de Pesquisa Agropecuária; Cyrillo, Joslaine Noely dos Santos Gonçalves; Instituto de Zootecnia do Estado de são Paulo; Costa, Mateus José Rodrigues Paranhos da; Universidade Estadual de São Paulo.	
Data: 	2012-12-03	
Ano: 	2012	
Palavras-chave: 	5.04.00.00-2 beef cows; Behavior; Fear; Husbandry.	
Resumo: 	The temperament of four beef cattle breeds were measured using a flight time test (FT) and a behavior score test (BST). FT was defined as the time taken by animals to cross a distance of 2 m after weight scale. The BST used a visual assessment of cattle behavior in which the results of four categories defined the score: movements, breathing intensity, vocalization and kicking. FT and BST coefficients of heritability were estimated using the restricted maximum likelihood, considering half siblings. Caracu presented a lower BST value than the other breeds. Nellore presented intermediate results, followed by Guzerat and Gyr with similar and higher means (p &amp;lt; 0.05). Similar results were observed with FT, but Caracu and Nellore did not differ from each other. A low association between FT and BST was found (rp= -0.36; p &amp;lt; 0.01). The correlation between a sire’s ranking, according to the predicted breeding values (p) estimated for FT and BST, was moderate and negative (rs = -0.63; p &amp;lt; 0.001). Heritability estimates for FT and BST were 0.35 and 0.34, respectively. Inside Nellore breed, herds with different selection criteria for weight were compared. Our results show that selection line based on weight might positively modulate temperament of Bos indicus cattle.   	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16426

10.4025/actascianimsci.v35i2.16426	
Editor: 	Editora da Universidade Estadual de Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16426/pdf

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16426/pdf_1

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/downloadSuppFile/16426/3811	
Formato: 	application/pdf

application/pdf	
Fonte: 	Acta Scientiarum. Animal Sciences; v. 35, n. 2 (2013); 207-212

Acta Scientiarum. Animal Sciences; v. 35, n. 2 (2013); 207-212

1807-8672

1806-2636	
Fonte: 	DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Animal Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).

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).