PSXV-7 Static effect of nutrition on the sexual performance of creole male goats in northern Mexico.

Abstract

The aim of this study was to evaluate the effect of nutritional supplementation upon sexual performance of adult male creole goats at the beginning of the breeding season, fed in open range. This study was carried out in northern Mexico (26°N, 104°W). Twelve adult male goats in extensive grazing conditions were divided into two groups (n=6 each, body condition score 2.62 ± 0.30). One group (DC) was supplemented with a commercial concentrate and alfalfa ad libitum (January–June 2017) and the other (DNC) only grazed in native vegetation. Body condition score (scale 0–5), scrotal circumference (cm), were registered weekly. This data was analyzed with an ANOVA test in SAS (2002), through a random blocks experimental design. Likewise, on June 3^th and 4^th, 2017 each male was evaluated individually quantifying sexual behaviors (search and consummation) during 20 minutes with an estrogenized female goat. These data were compared using a Chi-squared test (MYSTAT 12). There were differences between groups (P