Influence of seasonality on the physiological and seminal parameters of buffaloes in the western region of Pará1

• Published in: Pesquisa Veterinária Brasileira 2020-12, Vol.40 (12), p.1048-1053
• Main Authors: Castro, Sâmia R.S., Rebelo, Leticia S., Fernandes Junior, Onildo S., Belo-Reis, Alessandra S., Neves, Kedson A.L., Silva, Welligton C., Morini, Adriana C., Vale, William G.
• Format: Article
• Language: English
• Subjects: Amazon; Bubalus bubalis; buffaloes; environment; Pará; physiology; reproductive parameters; Seasonality; semen; VETERINARY SCIENCES
• ISSN: 0100-736X; 1678-5150; 1678-5150
• DOI: 10.1590/1678-5150-pvb-6716

Awareness of the physiological changes that occur when animals are subjected to climatic changes that are considered stressful is essential to maintain animal welfare and to be able to exploit their reproductive potential efficiently and rationally. The present study was carried out to evaluate climatic variables’ influence on physiological parameters, and Murrah buffalo ejaculates reared in a humid tropical climate in the Amazon. The immediate analyzes pertinent to the physical and morphological characteristics of the ejaculates were carried out and corresponded in the rainy season (RS) volume of 3.4±2.0mL; the mass activity of 4.4±0.5; motility of 80.4±5.6%; vigor of 4.4±0.4; concentration of 657,300±237,865.1 x 106sptz/mL; major defects of 9.0±2.6%; minor defects of 11.2±3.9%; total defects 20.2±5.3% and sperm plasma membrane integrity (SPMI) 84.8±5.6%, whereas in the non-rainy season (nRS), the results were 4.0±2.1mL; the mass activity of 3.0±1.0; motility of 56.2±13.4%; vigor of 3.0±1.0; concentration of 586,000±291,925.9 x 106sptz/mL; major defects of 20.8±9.9%; minor defects of 27.5±6.3%; total defects 48.3±9.3% and SPMI of 57.9±12.4%. Furthermore, a statistical difference (P