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Estimates of direct and maternal genetic effects on birth and weaning weights in Egyptian buffaloes calves (Buffalo Bulletin,41(2))
Ahmed Afifi - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Estimates of direct and maternal genetic effects on birth and weaning weights in Egyptian buffaloes calves (Buffalo Bulletin,41(2))
ผู้แต่ง / หัวหน้าโครงการ (EN): Ahmed Afifi
หน่วยงานสังกัดผู้แต่ง (EN): Cairo (Egypt). Animal Production Research Institute
บทคัดย่อ (EN): A total of 1173 first calves of Egyptian buffalo kept at Mehalet Mousa Farm, belonging to Animal Production Research, Ministry of Agriculture, Dokki, Cairo, Egypt during the period from 2000 to 2015 were used to estimate variances of direct and maternal genetic effects for birth weight (BW) and weaning weight (WW). Two animal models are used. Model 1 (full model) includes month and year of birth and sex as fixed effects and direct genetic, maternal genetic, covariance between direct and maternal genetic and residual as random effects. Model 2 is similar to model 1 while additive maternal genetic and covariance between direct and maternal effects were omitted from the analysis. Year of birth and sex had highly significant effects on BW and WW, while month of birth had no significant effects on both traits studied. Bulls of the buffalo had highly significant effects on BW and WW. Direct heritability estimates for BW are 0.30 and 0.33, for Model 1 and Model 2, respectively. Direct heritability estimates for WW are 0.34 and 0.39 for Model 1 and Model 2, respectively. Maternal heritability estimates are 0.10 and 0.03 for BW and WW, respectively. Phenotypic and genetic correlations among BW and WW are positive and highly significant. These results indicate the important of maternal genetic effect on birth weight.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://kukr.lib.ku.ac.th/db/kukr/search_detail/result/418085
คำสำคัญ (EN): Egyptian buffaloes
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

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Ahmed Afifi. "Estimates of direct and maternal genetic effects on birth and weaning weights in Egyptian buffaloes calves (Buffalo Bulletin,41(2))". ไม่ระบุหน่วยงาน. ม.ป.ป.

Ahmed Afifi. "Estimates of direct and maternal genetic effects on birth and weaning weights in Egyptian buffaloes calves (Buffalo Bulletin,41(2))". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Estimates of direct and maternal genetic effects on birth and weaning weights in Egyptian buffaloes calves (Buffalo Bulletin,41(2))
Ahmed Afifi
ไม่ระบุผู้เผยแพร่
ไม่ระบุวันที่เผยแพร่
Estimates of genetic parameters for production and reproduction traits in Murrah buffaloes (Riverine buffalo) in India (Buffalo Bulletin,41(1)) Anesthetic effects of ketamine-guaifenesin and isoflurane anesthesia for diaphragmatic herniorrhaphy in buffaloes (Buffalo Bulletin,41(2)) Incidence of various haemoprotozoan diseases in buffaloes (Buffalo Bulletin,41(3)) Study on effect of various non-genetic factors on performance traits of Murrah buffaloes (Buffalo Bulletin,41(4)) Heat ameliorative effects of rumen protected niacin supplementation in lactating Surti buffaloes (Buffalo Bulletin,41(4)) Genetic parameters prediction for Khuzestani buffaloes milk characteristics by random regression method (Buffalo Bulletin,41(1)) Eigenvector selection indices for improving milk yield and persistency in Egyptian buffalo (Buffalo Bulletin,41(3)) Ultrasonography and biochemical studies of hepatobiliary system in buffaloes (Buffalo Bulletin,41(2)) Clinico-biochemical and therapeutic management of mammitis in buffaloes (Buffalo Bulletin,41(2)) Efficacy of antioxidant in the therapy of subclinical mastitis in buffaloes (Buffalo Bulletin,41(1))
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