Influência da aptidão produtiva (leite ou carne) sobre a libido de bodes de raças exóticas e naturais da região semi-árida do nordeste brasileiro

Abstract

Sixteen male goats were agrouped accord to productive aptitude (meat or milk) and they were evaluated for the libido. In each racial group (Anglo-Nubiano and Pardo-Sertanejo - for milk; and Boer and Moxotó - for meat) being a total of four animals. Five females crosbreed from Anglo-Nubiano in oestrous were used.. The experiment was conducted in Patos - PB (Brazilian Northeast, semi-area region) during 42 days from August and September of 2002. The thirty initial days were reserved for the adaptadion period of the animals and the last twelve days the animals were submitted to intensive process of seminal collection in a continuous and growing system of collections divided in three phases, each one with four days: phase 1, a collection a day; phase 2, three collections a day; phase 3, six collections a day. During the seminal collections the whole sexual behavior of the male goats was monitored, besides the libido. The data shown a significant influence (P <0.05) on the productive aptitude as well the frequency of the seminal collection and also of the race on the time of reaction and time to ejaculation.