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Reproductive performance of Santa Inês ewes during dry and rainy seasons in eastern Amazon

Moura, A C B; Teixeira, P P M; Coutinho, L N; Paz, C C; Santos, V J C; Soares, F N; Oliveira, M E F; Vicente, W R R; Araújo, A A; Rodrigues, L F S.
Anim. Reprod.; 11(1): 44-48, 2014. tab
Artigo em Inglês | VETINDEX | ID: vti-9941


The aim of this study was to evaluate the reproductive performance of ewes during the dry and wet months in northern Brazil. The females were divided into two groups: reproduced during the dry season and lambing in the rainy season (Group A, n = 38), and the opposite with the other group (Group B, n = 55). There was no difference (P > 0.05) for expression of estrus (86.8 and 98.3%), pregnancy rate (86.8 and 90.9%), lambing (76.3 and 83.6%), abortion (9 and 7.4%), fecundity (86.8 and 96.3%), birth (103.4 and 110.8%) and prolificacy (113.7 and 115.2%) observed in groups A and B, respectively. However, there was a difference (P < 0.05) in lamb mortality (26.6% for group A and 49% for group B). Ewes from group A presented a higher average live weight at the end of the reproductive season and during the final third of pregnancy (P < 0.05).(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1