Physical and clinical evaluation of bulls in two municipalities of the small coast of Guerrero, Mexico

Abstract

Objective: To evaluate the reproductive physical characteristics and general health of stallions in two municipalities of Costa Chica of Guerrero, Mexico.

Design/methodology/approach: The study was carried out in the municipalities of Ometepec and Cuajinicuilapa. Thirty bulls between 2 and 10 years of age were evaluated. In the physical reproductive and clinical examination were performed by direct observation, using ultrasound to evaluate attached reproductive glands and testicular parenchyma. Blood samples were taken to determine the blood profile. Descriptive statistics was used to present the results.

Results: The 86% of the bulls had adequate legs and feet as well as preputial length. Scrotal circumference was according to the age and breed of the animals. Testicular defects were showed for 30% of the bulls, the most common was hypoplasia and unilateral tumors of testicular parenchyma and epididymis, as well as calcifications of the testicular parenchyma. The 93% of the bulls had normal accessory genital glands. Clinically 24% of the bulls with signs suggestive of anaplasmosis were found. The 76% of the bulls, apparently healthy, presented monocytosis, thrombocytopenia and anemia.

Limitations on study/implications: the lack of knowledge of the producers about the need for a comprehensive evaluation of the bulls allows them to suffer from diseases without receiving any type of treatment, decreasing their reproductive efficiency.

Findings/conclusions: Most of the bulls evaluated had the minimum physical characteristics required, although the presence of anemia and respiratory diseases may have an indirect negative impact on the reproductive efficiency of the bulls.