SciELO - Scientific Electronic Library Online

 
vol.35 número6Padrões de deslocamento e procura por forragem de novilhas leiteiras em pastagem de capim-mombaçaInclusão da covariância genética direta-materna no modelo para estimar parâmetros e predizer valores genéticos para ganho de peso em bovinos da raça Angus índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Revista Brasileira de Zootecnia

versão On-line ISSN 1806-9290

Resumo

COSTA JUNIOR, Gregório da Silva et al. Morphometric characterization of Santa Inês sheep raised in the regions of Teresina and Campo Maior, Piauí. R. Bras. Zootec. [online]. 2006, vol.35, n.6, pp. 2260-2267. ISSN 1806-9290.  http://dx.doi.org/10.1590/S1516-35982006000800009.

This study aimed to carry out the phenotypic characterization of males and females of Santa Inês hair sheep through body weight measurements and morphmetric and conformation evaluations at different ages. Data consisted of body weights and measurements from 1,113 animals raised in Teresina and Campo Maior regions of Piauí State under pasture regime and 824 animals that participated in Agricultural Fairs in Teresina. Adjusted means for body weight, withers and croup height, corporal and croup length, thoracic perimeter and two indexes of body capacity of the animal were compared by the Student-Newman-Keuls test. The management effect was an important source of variation for the evaluated traits and the sexual dimorphism was more accentuated in the oldest animals. The effects included in the model influenced more the body weights than the morph metric measurements. The index of body capacity (weight and length) indicated a trend for more accumulation of fat in oldest males than in females. The body weight and the morphmetric measurements were positively correlated indicating the possibility of correlated response in breeding programs for the Santa Inês breed.

Palavras-chave : body index; correlation; morphmetric; size; weight.

        · resumo em Português     · texto em Português     · pdf em Português