Influência de diferentes intervalos da inseminação artificial e do estresse do manejo da inseminação na produção e fertilidade de fêmeas avícolas Effect of intervals and stresses of artificial insemination on broiler breeder females production and fertility

Abstract

Com o objetivo de avaliar o efeito de diferentes intervalos da inseminação artificial (IA) sobre a fertilidade dos ovos e do manejo desta prática sobre a taxa de postura, peso médio dos ovos e peso corporal de fêmeas Plymouth Rock Barred, conduziram-se estes experimentos. A influência de diferentes intervalos de IA sobre a fertilidade (experimento I), foi avaliada utilizando-se 75 fêmeas com 50 semanas de idade, submetidas a três tratamentos. Sendo T1 = duas IA semanais, T2 = uma IA semanal e T3 = uma IA a cada duas semanas. As aves que apresentaram maior fertilidade foram as inseminadas duas vezes por semana (P0,05) para os parâmetros avaliados.One experiment was conducted to evaluate the effect of different time intervals of artificial insemination (AI) on egg fertility. the stress produced by this practice on egg production, average egg weight and body weight of Plymouth Rock Barred hens was evaluated. The effect of different time intervals of artificial insemination on fertility was evaluated on hens wich were under three treatments. T1 = 2 times a week , T2 = once a week and T3 = once every two weeks. The females were 50 week-old. the hens inseminated twice a week were more fertile than others (P<0.05). To evaluate the stress due to procedures of AI (experiment 2) fifty weeks old hens (280) were either inseminated or not. There was no significant difference between these two treatments. Therefore, the results demonstrate that AI does not cause physiological disturbs on hens.

Keywords

• inseminação artificial
• fertilidade
• taxa de postura
• estresse
• artificial insemination
• fertility
• egg production
• stress