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Ricerca di polimorfismi nel gene POU1F1 negli ovi-caprini di razza sarda

Daga, Cinzia (2010) Ricerca di polimorfismi nel gene POU1F1 negli ovi-caprini di razza sarda. Doctoral Thesis.

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Abstract

POU1F1 is a pituitary-specific factor regulating growth hormone, prolactin, and thyroid-stimulating hormone. Polymorphisms of POU1F1 gene have been associated with economic traits in chicken, bovine, swine. Recently, polymorphisms of sheep and goat POU1F1 gene have been reported. We used PCR–SSCP and DNA sequencing to identify genetic diversity of exons 2, 3, 6, in 120 animals of Sarda sheep breed and 186 of Sarda goat breed. G>A substitution, in the 3’untraslated region of sheep POU1F1 exon 6, was found in only one animal. No other SNPs were identified in Sarda sheep. Despite this low genetic variability in sheep, two novel SNPs in Sarda goat were found: C>T mutation at position 92 of the exon 3 (silent mutation), and a T>G mutation at position 17 in the exon 6 (missense mutation) causing change of alanina to serina. Moreover we described SfcI and MlyI PCR-RFLP method for detecting these SNPs. Hence we confirmed all four genetic previously reported SNPs in goat POU1F1 exon 6. Significant associations of SfcI polymorphism with protein (*p<0,05) and fat % (*p<0,01) were found: CC genotype had superior performaces. Significant statistical (*p<0,05) relationships between the MlyI polymorphism of POU1F1 gene (17G>T) and milk yield, protein % were found: TT genotype was uncommon and associated with superior milk yields, TC genotype with protein %. These results suggest that this gene can be considered an important candidate gene for goat traits.

Item Type:Doctoral Thesis
ID Code:3437
Publisher:Universita' degli studi di Sassari
Uncontrolled Keywords:POU1F1, gene, polimorfismi, ovi-caprini, razza sarda
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01 Dipartimenti > Biologia animale
Cicli, scuole e corsi:Ciclo 22 > Scuole > Riproduzione, produzione, benessere animale e sicurezza degli alimenti di origine animale > Riproduzione, produzione e benessere animale
Deposited On:24 Mar 2010 10:13

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