Authors
Silvio Renato Oliveira Menegassi, Júlio Otavio Jardim Barcellos, Eduardo Antunes Dias, Celso Koetz, Gabriel Ribas Pereira, Vanessa Peripolli, Concepta McManus, Maria Eugênia Andrighetto Canozzi, Flávio Guiselli Lopes
Publication date
2015/3
Journal
International journal of biometeorology
Volume
59
Pages
357-364
Publisher
Springer Berlin Heidelberg
Description
The aim of this study was to assess the seasonal effects of the environment on semen quality in bulls, using infrared thermography. Sperm motility (M), mass motion (MM), and vigor (VIG) were evaluated in sperm samples from 17 Bradford bulls aged approximately 24 months at the beginning of the study. Infrared thermography images and data were collected using an infrared FLIR T 300 camera and Quick Report 1.2 SP2 software to determine the temperature of the proximal and distal poles of the testis and to assess the testicular temperature gradient. The seasonal effects on physiological, seminal, and climatic variables were analyzed by the GLM ANOVA and CORR procedures using SAS®. The microclimatic factors were recorded in hourly intervals, and the daily mean temperature and mean relative humidity were calculated to determine the daily temperature-humidity index (THI) every day for 1 year …
Scholar articles
SRO Menegassi, JOJ Barcellos, EA Dias, C Koetz… - International journal of biometeorology, 2015