COMPUTERIZED ANDROLOGICAL EXAMINATION IN THE FIELD ABERDEEN ANGUS AND NELLORE CATTLE

Abstract

The productive chain of beef cattle represents a large part of the country's economic scenario, moving more than R$ 483.5 billion reais in 2015, which represents 30% of the Brazilian agribusiness GDP. With high demand for beef exports, there is an increasing need to make the production system more and more efficient, increasing the productivity of the herd. The evaluation of sperm motility and morphology are essential in the analysis of semen quality, in the subjective evaluation variations reach up to 60%, in order to reduce subjectivity, automatic systems have been developed such as (CASA), which performs the seminal analysis, providing greater reliability and speed in obtaining data. The standardization of this instrument will provide better results in animal reproduction biotechnology. The objective of this study was to demonstrate the results obtained in the computerized andrological examination (Sperm Class Analyzer®) of Nellore and Aberdeen Angus cattle raised extensively. These animals were submitted to general clinical examination and internal and external examination of the genital system. In this work, semen collection was performed by means of electroejaculation. The physical and morphological characteristics of the semen were evaluated by conventional means and by the Sperm Class Analyzer® program, being possible to obtain better results through the program with the visualization of pathologies not observed in the conventional means, thus obtaining better results in reproduction.