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The relationship between melatonin receptor 1A gene (MTNR1A) polymorphism and reproductive performance in Sarda breed sheep

Luridiana, S ; Mura, M.C ; Daga, C ; Diaz, M.L ; Bini, P.P ; Cosso, G ; Carcangiu, V

Livestock Science, January 2015, Vol.171, pp.78-83 [Periódico revisado por pares]

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  • Título:
    The relationship between melatonin receptor 1A gene (MTNR1A) polymorphism and reproductive performance in Sarda breed sheep
  • Autor: Luridiana, S ; Mura, M.C ; Daga, C ; Diaz, M.L ; Bini, P.P ; Cosso, G ; Carcangiu, V
  • Assuntos: Sarda Sheep ; Polymorphism ; Seasonal Reproduction ; Ram Effect ; Agriculture
  • É parte de: Livestock Science, January 2015, Vol.171, pp.78-83
  • Descrição: In several species the circadian changes in melatonin secretion acts as the organic informer of the photoperiodic trend. Some physiological functions, such as reproduction, are influenced by seasonal melatonin secretion. In small ruminants polymorphisms at the MTNR1A gene are associated with non-seasonal breeding. The aim of this research was to evaluate if the MTNR1A gene polymorphism influences first conception, second and third lambing in Sarda breed sheep. Two-hundred ewe lambs, born between 10th November and 10th December 2008, were randomly chosen from four selected farms and genotyped for the A612G polymorphism at the MTNR1A gene. To rule out a possible confounding effect of the low frequency of the A/A genotype in Sarda sheep, 800 ewe lambs were genotyped and 85 individuals were selected for each genotype (A/A, A/G and G/G). Fertile rams were given access to the selected ewe lambs from 30th July to 30th October 2009 during the first year, and from 1st May to 30th October...
  • Idioma: Inglês

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