Effects of selection for four week body weight on some parameters in Japanese quail (Coturnix coturnix japonica) - 1. Genetic parameters

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dc.contributor.authorOguz, I
dc.contributor.authorTurkmut, L
dc.date.accessioned2019-10-27T11:51:18Z
dc.date.available2019-10-27T11:51:18Z
dc.date.issued1999
dc.departmentEge Üniversitesien_US
dc.description.abstractThis research was carried out to determine the genetic effects of divergent selection under two different selection pressures for 4. week body weight over 3 generations on 4 week body weight and related characters such as slaughter weight, carcass weight, breast weight and leg weight in Japanese quail. individual selection for body weight was carried out at 4 weeks, separately for each sex. The proportion kept was 10% for males and 30% for females in H1 and H2 lines, and 20% for males and %60 for females in H3 and H4 lines, H1 and H3 lines were selected for high body weight, H2 and H4 lines were selected for low body weight, H5 was a control line. Weighted selection differentials obtained for 4 weeks body weight of 3 rd generation of Line 1, Line 2, Line 3, Line 4 males were 30.70 g, -139.67 g, 31.35 g, -107.45 g, respectively. Similar weighted selection differentials for females were 2.46 g, -62.62 g, 25.25 g, -56.46 g, respectively At the end of three generations, total genetic improvement obtained for 4 weeks body weight in Line1, line 2, Line 3 and Line 4 were 23.28 g, -8.52 g, 20.22 g, 14.12 g for males and 25.06 g, -12.83 g, 19.88 g, 14.79 g for females, respectively. Realized heritabilities were 0.75, 0.06, 0.64 for line 1, Line 2, Line 3 males respectively, 0.59, 0.20, 0.75 for females, respectively. Heritability estimates from half sib analyses were 0.60+/-0.66, 1.00+/-0.50 for line 1 and Line 3 males, 0.68+/-0.40. 0.61+/-0.37 and 0.86+/-0.29 for line 1, Line 2 and Line 3 females respectively. Heritabilities from regression of offsprings on sires were 0.69+/-0.55, 0.80+/-0.40, 0.15+/-0.39 for line 1, Line 3, Line 4 males, 0.70+/-0.32, 0.10+/-0.20, 0.80+/-0.40 and 0.12+/-0.20 for Line 1, Line 2, line 3 and Line 4 females, respectively. Phenotypic and genetic correlations between 4 weeks body weight and slaughter weight. Carcass weight, breast weight, thigh weight were found to be positive and moderate levels in females than in males. It was concluded that genetic improvement under high selection pressure for four week body weight will be more effective in both directions.en_US
dc.identifier.endpage224en_US
dc.identifier.issn1300-0128
dc.identifier.issue3en_US
dc.identifier.startpage215en_US
dc.identifier.urihttps://hdl.handle.net/11454/34531
dc.identifier.volume23en_US
dc.identifier.wosWOS:000079470400004en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isotren_US
dc.publisherScientific Technical Research Council Turkeyen_US
dc.relation.ispartofTurkish Journal of Veterinary & Animal Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectJapanese quail (Coturnix coturnix japonica)en_US
dc.subjectbody weighten_US
dc.subjectdivergent selectionen_US
dc.subjectgenetic parametersen_US
dc.titleEffects of selection for four week body weight on some parameters in Japanese quail (Coturnix coturnix japonica) - 1. Genetic parametersen_US
dc.typeArticleen_US

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