Carcangiu, Vincenzo and Pazzola, Michele and Marchi, B. and Vacca, Giuseppe Massimo and Dettori, Maria Luisa and Mura, Maria Consuelo and Bini, Pier Paolo (2008) Effect of the polymorphism of MT1 melatonin gene receptor on reproductive activity of Mediterranean Italian buffalo (Bubalus bubalis). Reproduction in Domestic Animals, Vol. 43 (Suppl. s3), p. 89-90. eISSN 1439-0531. Article.
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The Mediterranean Italian buffalo (Bubalus bubalis) has a seasonal reproductive activity, which obviously influences productions. Photoperiod, through the melatonin secretion, is the main environmental factor affecting the regulation of sexual activity. Melatonin exerts its action through binding to receptors located in the hypothalamus, MT1 is the receptor implicated in the control of the reproductive seasonality and its polymorphism affects the sensibility to photoperiod in sheep and goats. The aim of this research was to study the polymorphism in MT1 gene and its effect on reproduction in Mediterranean Italian buffaloes reared in Sardinia. The study was carried out in a herd made up of about 300 buffaloes, located in the South of Sardinia (39° N). 55 pluriparous female, 5.8 ± 4.5 year-old, were selected and their reproductive activity monitored by transrectal ultrasonography and calving date, in the previous years, was achieved from the farm software.
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