Tratamento com anti-inflamatórios sobre a quantidade e qualidade dos complexos Cumulus oophorus aspirados dos ovários de novilhas / Treatment with anti-inflammatory on the quantity and quality of the Cumulus oophorus complexes aspirated from the ovaries of heifers

RESUMO

A produção de embrião in vitro (PIV) associada à aspiração folicular transvaginal guiada O número médio de folículos a serem aspirados (imagem ultrassom) foi semelhante em todos os tratamentos (p>0,05). O Grupo III apresentou menor média de COC’s viáveis (p<0,05), enquanto o grupo Controle e o tratado com flunixin meglumine apresentaram média de COC’s viáveis semelhante (p>0,05). O número médio de COC’s aspirados no Grupo Controle foi 19,52 ± 11,00 COC’s e o de COC’s viáveis de 14,09 ± 8,53 por sessão de aspiração folicular. O número médio de ovócitos Grau I e II foi semelhante entre os grupos experimentais (p>0,05). No entanto, o número médio de ovócitos Grau III foi menor nos animais tratados com meloxicam (p<0,05). O número de ovócitos sem cumulus foi semelhante entre os grupos experimentais (p>0,05), enquanto o número de ovócitos atrésicos apresentou diferença somente entre os grupos tratados com anti-inflamatório (p<0,05), onde os animais tratados com meloxicam, apresentaram menor número médio de ovócitos atrésicos.

ABSTRACT

The production of bovine embryo in vitro (PIV) associated to the ultrasound-guided transvaginal folicularaspiration (OPU - Ovum pick-up) provided an increment in the reproduction productivity of cows, being of great importancefor the fast multiplication of these animals. However, it can cause morphologic and functional alterations in the ovaries. Thisstudy aims to evaluate the anti-inflammatory effects on the quantity and quality of cumulus oophorus complexes (COC’s)aspirated from the ovaries of crossbred heifers treated with anti-inflammatory. In order to do so, 18 heifers were divided inthree treatment groups, being Group I Control, II treated with Flunixin Meglumine (1.1 mg/Kg - Banamine®) and III treatedwith Meloxican (0,5 mg/kg - Maxicam®). The animals were submitted to ten OPU’s, being the collected oocytes quantifiedand evaluated. The average number of follicles to be aspirated was similar in all the treatments (p> 0.05). Group III showeda smaller average number of viable COC’s (p<0.05), whereas the Control group and the one treated with flunixin meglumineshowed a similar average number of viable COC’s (p>0.05). In the Control Group the average number of aspirated COC’swas 19.52 ± 11.00 COC’s and the average number of viable COC’s was 14.09 ±8.53 per folicular aspiration session. Theaverage number of oocytes of Degree I and II was similar among the experimental groups (p> 0.05). However, the averagenumber of oocytes of Degree III was smaller in the animals treated with meloxicam (p<0.05). The number of oocytes withoutcumulus was similar among the groups (p> 0.05), whereas the number of atresic oocytes showed difference among the groupstreated with anti-inflammatory, where that one treated with meloxicam showed a smaller average number of atresic oocytes.