feito das variações de peso e condição corporal, de lá expressão de receptores de leptina e hormôna luteinizante, na anovulação pós parto em vacas zebu (Bos indicus).
DOI:
https://doi.org/10.17533/udea.rccp.324284Palavras-chave:
anestro pós parto, receptor leptina, receptor LHResumo
Neste estudo, analisaram a relação entre a variação no peso corporal (PC) ea BCS (CC), com o tempo de aparecimento dos primeiros folículos dominante (FD), e na presença de leptina e receptores de LH ovários. Em onze vacas zebus foi realizado durante o pós parto ultra-som para determinar a sua dinâmica folicular: logo que o terceiro folículo dominante (FD) foi detectado, as vacas foram tratadas com LH (FDLH, n = 4) ou soro fisiológico (grupo controle, FDSS, n = 4) e 48 horas mais tarde, veio a determinar nos termos ovariectomía receptores de leptina e LH por imunofluorescência indireta (IFI) e immunohistoquímica (IHQ). Vacas no grupo de controlo que não apresentarem FD também foram ovariectomizadas (n = 3). Nós não encontramos qualquer efeito significativo sobre o PC do CC no dia de terceiro FD. No entanto, encontramos uma correlação negativa entre a perda do PC e da perda diária de CC e da hora em primeira e terceira FD. Do grupo FDLH-tratados, 75% (3/4) vacas ovularam. Do grupo FDSS, nenhum ovo. O IF não era tecnicamente possível, uma vez que autofluorescencia foi encontrada nos tecidos. No IHQ para ambos os receptores, foi encontrado um padrão semelhante de expressão durante o desenvolvimento folicular sugerindo uma comodulación no ovário, cuja expressão foi maior no DF e corpo hemorrágico nas instâncias inferiores e de folículos em crescimento, tanto nas células granulosa, como nas células da teca e células luteinizadas.
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