V. Okoro, U. Ogundu, I. Okoli, G. Anyanwu, J. Chikaire, A. Raji, C. Maduka
{"title":"尼日利亚东南部未选择家兔断奶前和断奶后窝重的遗传力和重复性估计","authors":"V. Okoro, U. Ogundu, I. Okoli, G. Anyanwu, J. Chikaire, A. Raji, C. Maduka","doi":"10.5923/J.IJAF.20120201.02","DOIUrl":null,"url":null,"abstract":"Data from one hundred and seventy eight (178) kittens generated from 21 does mated to 7 stud bucks resulting in 34 kindling were used to estimate the heritability due to sire and repeatability for birth, weaning and post weaning litter weight traits of unselected non-descript rabbits reared in FUTO teaching and research farm. Traits such as litter weight at birth (LWB), at weaning i.e. 21d (LWW), 42d (LW42), 56d (LW56) were studied. A repeatability single trait animal model was used to analyze the data Estimates of Sire heritability for LWB, LWW, LW42 and LW56 were 0.34±0.41, 0.79±0.632, 0.91±1.20 and 0.62±0.542 while repeatability estimate were 0.034±0.243, -0.130±0.197, 0.003±0.236 and 0.008±0.238 respectively. These estimates indicate a moderate to high heritability while the repeatability indicates generally low estimates. This implies that selection of this non-descript population of rabbits for LWW, LW42 and LW56 could be efficient in im- proving these traits in the population, while the repeatability of these traits being very low, suggests that the likelihood to repeat these records is low.","PeriodicalId":13804,"journal":{"name":"International Journal of Agriculture and Forestry","volume":"18 1","pages":"7-10"},"PeriodicalIF":0.0000,"publicationDate":"2012-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Estimation of Heritability and Repeatability for Pre-Weaning and Post Weaning Litter Weights of Unselected Domestic Rabbits in South Eastern Nigeria\",\"authors\":\"V. Okoro, U. Ogundu, I. Okoli, G. Anyanwu, J. Chikaire, A. Raji, C. Maduka\",\"doi\":\"10.5923/J.IJAF.20120201.02\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Data from one hundred and seventy eight (178) kittens generated from 21 does mated to 7 stud bucks resulting in 34 kindling were used to estimate the heritability due to sire and repeatability for birth, weaning and post weaning litter weight traits of unselected non-descript rabbits reared in FUTO teaching and research farm. Traits such as litter weight at birth (LWB), at weaning i.e. 21d (LWW), 42d (LW42), 56d (LW56) were studied. A repeatability single trait animal model was used to analyze the data Estimates of Sire heritability for LWB, LWW, LW42 and LW56 were 0.34±0.41, 0.79±0.632, 0.91±1.20 and 0.62±0.542 while repeatability estimate were 0.034±0.243, -0.130±0.197, 0.003±0.236 and 0.008±0.238 respectively. These estimates indicate a moderate to high heritability while the repeatability indicates generally low estimates. This implies that selection of this non-descript population of rabbits for LWW, LW42 and LW56 could be efficient in im- proving these traits in the population, while the repeatability of these traits being very low, suggests that the likelihood to repeat these records is low.\",\"PeriodicalId\":13804,\"journal\":{\"name\":\"International Journal of Agriculture and Forestry\",\"volume\":\"18 1\",\"pages\":\"7-10\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-08-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Agriculture and Forestry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5923/J.IJAF.20120201.02\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Agriculture and Forestry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5923/J.IJAF.20120201.02","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Estimation of Heritability and Repeatability for Pre-Weaning and Post Weaning Litter Weights of Unselected Domestic Rabbits in South Eastern Nigeria
Data from one hundred and seventy eight (178) kittens generated from 21 does mated to 7 stud bucks resulting in 34 kindling were used to estimate the heritability due to sire and repeatability for birth, weaning and post weaning litter weight traits of unselected non-descript rabbits reared in FUTO teaching and research farm. Traits such as litter weight at birth (LWB), at weaning i.e. 21d (LWW), 42d (LW42), 56d (LW56) were studied. A repeatability single trait animal model was used to analyze the data Estimates of Sire heritability for LWB, LWW, LW42 and LW56 were 0.34±0.41, 0.79±0.632, 0.91±1.20 and 0.62±0.542 while repeatability estimate were 0.034±0.243, -0.130±0.197, 0.003±0.236 and 0.008±0.238 respectively. These estimates indicate a moderate to high heritability while the repeatability indicates generally low estimates. This implies that selection of this non-descript population of rabbits for LWW, LW42 and LW56 could be efficient in im- proving these traits in the population, while the repeatability of these traits being very low, suggests that the likelihood to repeat these records is low.