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Analysis of estrogen receptor polymorphism and litter size traits in primiparous sows: preliminary results (CROSBI ID 194323)

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Menčik, Sven ; Balenović Tomislav ; Lulić, Slavko ; Modrić, Mario ; Ostović, Mario ; Sušić, Velimir, Štoković, Igor ; Ekert Kabalin, Anamaria Analysis of estrogen receptor polymorphism and litter size traits in primiparous sows: preliminary results // Krmiva : časopis o hranidbi životinja, proizvodnji i tehnologiji krme, 54 (2012), 3; 75-80

Podaci o odgovornosti

Menčik, Sven ; Balenović Tomislav ; Lulić, Slavko ; Modrić, Mario ; Ostović, Mario ; Sušić, Velimir, Štoković, Igor ; Ekert Kabalin, Anamaria

engleski

Analysis of estrogen receptor polymorphism and litter size traits in primiparous sows: preliminary results

Identification of individual genes controlling litter size and their use in selection programs could contribute to an increased reproductive rate in pig population. Estrogen receptor gene (ESR) is a candidate gene marker for reproductive traits and growth in pigs. The aim of this preliminary study was to investigate ESR gene polymorphism as well as the frequencies of different ESR-PvuII genotypes and their litter size in primiparous sows. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method with the PvuII restriction enzyme was used on genotyping 30 primiparous Topigs 20 hybrid sows. The following reproductive traits of litter size were analyzed: Total Number of Born piglets (TNB), Number of Born Alive piglets (NBA), Number of Stillborn piglets (NSB) and Number of Mummified piglets (NMUM). Allele and genotype frequencies were calculated, and Hardy-Weinberg equilibrium was tested using χ2-test. The ANOVA test was used to analyze litter size differences between sows with different genotypes. Three genotypes were detected with absolute frequencies (AA (13), AB (14) and BB (3)), while the gene relative frequency was 0.67 for A allele and 0.33 for B allele. Study animals were in Hardy-Weinberg equilibrium. The primiparous sows with the BB genotype showed highest TNB (14.33) and NSB (2.33), while NBA and NMUM were highest in primiparous sows with AA genotype (12.66 and 0.38, respectively). Although some differences were found in litter size according to genotypes they were not significant(P>0.05). Further investigations in a larger sample size will contribute to more conclusive evaluation of the possible correlation between ESR-PvuII polymorphism and litter size in sows.

Estrogen Receptor Gene; Topigs 20; Litter size

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Podaci o izdanju

54 (3)

2012.

75-80

objavljeno

0023-4850

Povezanost rada

Veterinarska medicina