Avaliação andrológica de bovinos Santa Gertrudis sobre diferentes condições alimentares

Abstract

The work aimed to evaluate productive and reproductive characteristics of the breed's Santa Gertrudis cattle at different feeding conditions. Eight male cattle were used, not neutered, with average weight of 271 kg and an average age of 15 months. The experiment lasted 98 days, being animals kept in containment regime distributed in two treatments, being the (T1) diet with 100% concentrate and (T2) with 70% concentrate diet. The weighing of animals was made every two weeks and during the period was held two semen samples. Macroscopic physical aspects were evaluated (volume and aspect) and microscopic (progressive motility, vigor and breaking up) of semen. For the morphological characteristics were assessed minor defects, defects and flaws. To perform statistical analyses of the data tabulated using the SAS Learning Edition 4.1® software (SAS Institute, 2006). The means were compared by SNK. There was no difference between the diets for weight of the animals. Cattle fed with bulky constraint (T1) consumed less, but showed the same gain in weight that the group with less constraint (T2). Diets did not influence on seminal characteristics. Was found a high percentage of larger defects (32.83%) morphological parameters of semen. With the results it can be concluded that the diet did not affect the weight of these animals and that most were still in prepuberal phase.