Primeiro estudo do uso de termografia escrotal em touros girolando e sua relação com a classificação andrológica por pontos

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Moreira, Gabriel Miranda
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Lavras
Programa de Pós-Graduação em Zootecnia
UFLA
brasil
Departamento de Zootecnia
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://repositorio.ufla.br/jspui/handle/1/11173
Resumo: Breeding soundness evaluation (BSE) is a method that allows the selection of bulls with greater reproductive potential. The performance of bulls evaluated by BSE system may be influenced by the scrotum surface temperature, which is related to the environmental temperature. The objective was to verify the relationship to the scrotal surface thermographic temperatures and the BSE in Girolando bulls. Scrotal circumference (SC), testicular volume (TESTVOL), spermatic chord length (SCL), scrotum skin texture (SST), motility, vigor, mass motion, major defects (MAD), minor defects (MID), and total defects (TOD) were evaluated in sixty eight Girolando bulls. Three classes were established according to the BSE score: unsatisfactory (0-29), questionable (30-59) and satisfactory (60-100). The scrotal surface and the ocular region thermographic temperatures were evaluated. A temperature and humidity index (THI) was calculated when photographs were taken. The SC and TESTVOL of satisfactory and questionable bulls were greater (P<0.01). Age, weight, SCL, SST, seminal physical parameters, MID and scrotum surface thermographic temperatures were similar (P>0.05) between BSE classes. The THI was positively correlated (P<0.01) to the scrotum and ocular region thermographic temperatures. The thermographic temperatures of the scrotum surface were not limiting to the BSE performance of bulls.