Inhibin Impaired Spermatogenesis, Plasma LH, Pi-Tuitary PRL mRNA, and Hypothalamic VIP mRNA Expressions in Yangzhou Ganders

Inhibin (INH) plays a key role in the regulation of the reproductive performance of geese. It inhibits the follicle-stimulating hormone (FSH) secretion from the anterior pituitary gland to regulate spermatogenesis. Immunization against INH in male geese leads to the production of antibodies to neutralize the INH activity that enhances testicular function and gonadotropin production. The objectives of the present study were to investigate the potential role of immunization against INH on testicular histology, plasma LH, pituitary PRL mRNA, and hypothalamic VIP mRNA expressions in Yangzhou Ganders. A total of 60 birds were selected and divided into control (CON) and INH immunized (INH immunized), having 30 in each group. In this experiment, the ganders were immunized with INH three times, and birds in the CON group were inoculated with bovine serum albumin (BSA). Analyzed data revealed that immunization against inhibin has no significant effects on improving the plasma concentration of LH hormone, germ cell numbers, hypothalamic VIP mRNA, and pituitary PRL mRNA expressions. It is concluded that INH (INH) immunization is a sublime tool to improve reproductive efficiency in Yangzhou ganders, however, INH immunization may have a positive effect on pituitary PRL mRNA and hypothalamic mRNA expressions and LH plasma concentration. The seasonality has played a vital impact on its hypothalamus pituitary gonadal (HPG) axis.