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- W2209988539 abstract "ABSTRACTThe present study investigate the possibilities of improving milk production in Dhofari goat raisedat Salalah of Sultanate of Oman through selection index containing body weight and dimensions atbirth. Records of 190 Dhofari does, daughters of 35 sires were available for this study. During twosuccessive years, data were collected on the same animal at birth (birth weight, BW; body length, BL;body height at withers, BH; heart girth, HG and rear girth, RG) and after the first lactation season(total milk yield, TMY). The present study estimated genetic and phenotypic parameters for thestudied traits and constructed 19 selection indices to predict TMY in Dhofari goat.The present study estimated averages of BW, BL, BH, HG, RG and TMY as 2.9 kg, 31.4 cm, 34.7cm, 33.6 cm, 37.0 cm and 50.0 kg, respectively. Among body dimensions, HG and RG were morevariable than BL and BH. Heritability estimates for all studied traits were little and ranged from 0.002to 0.1. The correlation coefficients among all studied traits were genetically high and phenotypicallylow. Genetic correlations between TMY and all live body measurements were close to one and muchhigher than the corresponding phenotypic ones. Genetically and phenotypically, TMY had positivecorrelations with BW, BL and BH and negative ones with HG and RG. The maximum accuracy of thefull index was 0.45. The greatest improvement in TMY was +0.25 kg. Selection on all indices reducedHG and RG. Selection on I13 while reducing HG (-0.31 cm) and RG (-0.42 cm), it increases the size ofanimal probably through BL (+0.11cm) and BH (+0.18 cm). The present study concluded that thesimplified selection index (I13) utilizing individual kid performance (HG and RG at birth) is the mostefficient (rTI =0.38), attain adequate improvement in TMY (+0.21 kg), less expensive and being about13% more efficient in the improvement than direct selection for milk yield alone compared with theother studied indices. Thus, I13 can be used as a selection criterion for the simultaneous improvementof milk and meat production in Dhofari goat." @default.
- W2209988539 created "2016-06-24" @default.
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- W2209988539 date "2014-04-01" @default.
- W2209988539 modified "2023-09-28" @default.
- W2209988539 title "SELCTION INDEX FOR SOME BODY MESUREMENTS TOWARDS IMPROVING MILK PRODUCTION IN DHOFARI GOAT" @default.
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- W2209988539 doi "https://doi.org/10.21608/ejsgs.2014.26749" @default.
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