Title:	Cronologia da incidência de anomalias morfológicas espermáticas em touros búfalos (Bubalus bubalis) sob estresse térmico de curta duração.
Authors:	GONÇALVES, A. A. GARCIA, A. R. CRUZ, G. S. DA SANTOS, S. DO S. D. OHASHI, O. M.
Affiliation:	ARNALDO ALGARANHAR GONÇALVES, UFPA; ALEXANDRE ROSSETTO GARCIA, CPPSE; GABRIELA SANTOS DA CRUZ, UFPA; SIMONE DO SOCORRO DAMASCENO SANTOS, UFPA; OTÁVIO MITIO OHASHI, UFPA.
Date Issued:	2021
Citation:	In: REUNIÃO ANUAL DA ABRAA, 5., 2021, Campo Grande, MS. Anais... Campo Grande, MS: UFMS, 2021.
Pages:	p.190-193.
Description:	The study aimed to evaluate the effect of short-term heat stress on sperm morphology, relating them to the stages of spermatogenesis. Adult buffalo bulls underwent scrotal insulation (day 0; 48 hours). Semen samples were collected every 7 days (day -7 to day 49) and analyzed. Heat stress destabilized scrotal thermoregulation (36.1±0.3 °C and 35.5±2.3 °C, after 24 and 48 hours of insulation) and returned to baseline five days after removal of the stressor stimulus (33.2±0.6°C). The sequential expression of the morphological defects showed tail defects (days 7 to 14), cytoplasmic droplets (days 14 to 28) and sperm head defects (day 28). Hyperthermia more severely damaged sperm in epididymal transit, elongated sperm and secondary spermatocytes. Thus, buffalo bulls presented a peculiar manifestation of sperm morphological defects after short-term stress, indicating an important difference regarding the bovine species. Therefore, during the andrological evaluation, allometric extrapolation between these species should be avoided.
Keywords:	Espermiograma Defeitos espermáticos Insulação escrotal Scrotal insulation Spermiogram Sperm defects
ISBN:	978-65-86943-44-3
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CPPSE)