AVALIAÇÃO DO POTENCIAL REPRODUTIVO DE TOUROS DA RAÇA BLONEL

Abstract

The search for beef cattle ideal for tropical countries, such as Brazil, raised the Blonel breed (5/8 Blonde and 3/8 Nellore). This is the newest breed of cattle registered by the Ministry of Agriculture, Livestock and Supply (MAPA). The objective of this study was to evaluate the reproductive performance of bulls of the Blonel evaluating the immediate and immediate analysis of ejaculate parameters. The collection of reproductive data was made in the year 2012, in the herd of Fazenda Três Furnas in Buriti Alegre - GO. We studied 14 animals submitted to andrological examination between 24 and 63 months of age. The andrological exam was performed by the same veterinarian, during the months of August and September. Immediately after collection, immediate semen analyzes were performed: motility, vigor and sperm concentration. The data of the reports were collected, typed in spreadsheet, subject to analysis and average calculation. For statistical analysis, the results were submitted to ANOVA at 5% of the level of significance. The results (mean ± standard deviation) were: 30.14 ± 1.34 and 28.93 ± 1.69 cm for scrotal circumference, 5.50 ± 0.00 and 4.64 ± 0.80 mL for volume of 2.71 ± 0.49 and 2.57 ± 0.53% for swirling, 54.28 ± 6.07 and 67.86 ± 9.51% for motility, 3.57 ± 0.79 and 3.28 ± 0.75% for vigor, 657.14 ± 97.59 and 678.57 ± 138.01% for concentration, 7.57 ± 1.27 and 5.71 ± 2.43% for total major defects, 5.43 ± 2.76 and 2.29 ± 1.60% for total lower defects for young and adult bulls, respectively. The results observed in this study are within acceptable parameters for bovines of these age groups.