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Influência da cinética espermática sobre a taxa de prenhez na inseminação artificial em tempo fixo em bovinos / Influence of sperm kinetics on pregnancy rate in fixed-time artificial inseminations in cattle

HIDALGO, Myrian Megumy Tsunokawa; ALMEIDA, Ana Beatriz Marques de; MORAES, Fábio Lucas Zito de; GARRIDO, Beatriz Canabrava; MARTINS, Maria Isabel Mello.
Ci. Anim.; 30(04, Supl. 2): 195-199, 2020.
Artigo em Português | VETINDEX | ID: vti-32343


The aim of the study was to evaluate the influence of hyperactivated sperm kinetics on pregnancy rate in IATF. Two experimental groups were established, based on the results of the semen analysis in the CASA system: groups of bulls with hyperactivated sperm (N = 10; HIPER) and bulls with non-hyperactivated sperm (N = 14; N HIPER). Differences between groups were estimated by the t test, and a significance level <5% was considered. Highervalues for the variables were identified in the HIPER group: VAP; VSL; VCL; ALH; RAPID cells and SLOW cells. On the other hand: BCF; STR; LIN; WOB and MEDIUM cells, which had higher values in the N HIPER group. No difference was found for the pregnancy rate variable between groups (p=0.454). Therefore, although the CASA system is an objective method of analysis, we can consider that it alone is not sufficient to predict seminal fertility, but when associated with other techniques such as: specific software and multivariate statistics that identify subpopulations, if makes it an important methodology for assessing semen quality.(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1