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ThesisItem Embargo Genetic evaluation of test day milk yield vis-a-vis thermotolerance in murrah buffaloes(LUVAS Hisar, 2023-12) Yadav,Tejwanti; Dhaka, S. S.The present study was conducted on 646 buffaloes maintained at Buffalo Research Centre (BRC) Department of Livestock Production Management, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar over a period of 28 years (1993-2020). The overall least squares means for ten different test days, FLMY and F305DMY were 3.94±0.06, 7.79±0.07, 8.58±0.07, 8.61±0.08, 8.18±0.08, 6.65±0.13, 6.26±0.12, 5.61±0.12, 5.03±0.12, 4.42±0.11, 2273.68±23.41, 2135.72±18.69 in kg/day, respectively. The effect of period of calving was statistically significant (P<0.01) on all test day records (TD1 to TD10 ), FLMY and F305DMY. The season of calving was statistically significant on TD2 , TD3 and TD4. The effect of regression on AFC was statistically significant effect on TD1 TO TD5 and FLMY and F305DMY. The estimates of heritability of various test day milk records ranged from 0.11(TD9) to 0.52 (TD8). Model 1 was best for all the test day milk records except TD6, FLMY and F305DMY where model 2 was adjudged as the best because of maximum likelihood value. The average estimated breeding values for traits viz. TD1, TD2, TD3, TD4, TD5, TD6, TD7, TD8, TD9, TD10, FLMY and F305DMY,were 3.94 kg/day,7.90 kg/day,8.66 kg/day, 8.68 kg/day, 8.30 kg/day, 7.91 kg/day, 7.40 kg/day, 6.73 kg/day, 6.18 kg/day, 5.49 kg/day, 2325.92 kg and 2181.42 kg respectively. The rank correlations between the ranking of the sires calculated among Test Days varied from 0.094 (TD1 and TD2) to 0.691 (TD5 and TD6) whereas product moment correlations varies from 0.072(TD1 and TD2) to 0.692 (TD5 and TD6). Rank correlation between FLMY and test days varies from 0.148 (FLMY and TD1) to 0.668 (FLMY and TD7) while product moment correlation between traits ranged from 0.181 (FLMY and TD1) to 0.667 (FLMY and TD7). Rank correlation between F305DMY and test days varies from 0.225 (F305DMY and TD1) to 0.691 (F305DMY and TD7) while product moment correlation between traits ranged from 0.239 (F305DMY and TD1) to 0.700 (F305DMY and TD5).ThesisItem Embargo Genetic evaluation of test day milk yield vis-a-vis thermotolerance in murrah buffaloes(LUVAS Hisar, 2023-12) Yadav,Tejwanti; Dhaka, S. S.The present study was conducted on 646 buffaloes maintained at Buffalo Research Centre (BRC) Department of Livestock Production Management, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar over a period of 28 years (1993-2020). The overall least squares means for ten different test days, FLMY and F305DMY were 3.94±0.06, 7.79±0.07, 8.58±0.07, 8.61±0.08, 8.18±0.08, 6.65±0.13, 6.26±0.12, 5.61±0.12, 5.03±0.12, 4.42±0.11, 2273.68±23.41, 2135.72±18.69 in kg/day, respectively. The effect of period of calving was statistically significant (P<0.01) on all test day records (TD1 to TD10 ), FLMY and F305DMY. The season of calving was statistically significant on TD2 , TD3 and TD4. The effect of regression on AFC was statistically significant effect on TD1 TO TD5 and FLMY and F305DMY. The estimates of heritability of various test day milk records ranged from 0.11(TD9) to 0.52 (TD8). Model 1 was best for all the test day milk records except TD6, FLMY and F305DMY where model 2 was adjudged as the best because of maximum likelihood value. The average estimated breeding values for traits viz. TD1, TD2, TD3, TD4, TD5, TD6, TD7, TD8, TD9, TD10, FLMY and F305DMY,were 3.94 kg/day,7.90 kg/day,8.66 kg/day, 8.68 kg/day, 8.30 kg/day, 7.91 kg/day, 7.40 kg/day, 6.73 kg/day, 6.18 kg/day, 5.49 kg/day, 2325.92 kg and 2181.42 kg respectively. The rank correlations between the ranking of the sires calculated among Test Days varied from 0.094 (TD1 and TD2) to 0.691 (TD5 and TD6) whereas product moment correlations varies from 0.072(TD1 and TD2) to 0.692 (TD5 and TD6). Rank correlation between FLMY and test days varies from 0.148 (FLMY and TD1) to 0.668 (FLMY and TD7) while product moment correlation between traits ranged from 0.181 (FLMY and TD1) to 0.667 (FLMY and TD7). Rank correlation between F305DMY and test days varies from 0.225 (F305DMY and TD1) to 0.691 (F305DMY and TD7) while product moment correlation between traits ranged from 0.239 (F305DMY and TD1) to 0.700 (F305DMY and TD5).ThesisItem Embargo Genetic evaluation of test day milk yield vis-a-vis thermotolerance in murrah buffaloes(LUVAS,Hisar, 2023-12) Yadav,Tejwanti; Dhaka, S. S.The present study was conducted on 646 buffaloes maintained at Buffalo Research Centre (BRC) Department of Livestock Production Management, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar over a period of 28 years (1993-2020). The overall least squares means for ten different test days, FLMY and F305DMY were 3.94±0.06, 7.79±0.07, 8.58±0.07, 8.61±0.08, 8.18±0.08, 6.65±0.13, 6.26±0.12, 5.61±0.12, 5.03±0.12, 4.42±0.11, 2273.68±23.41, 2135.72±18.69 in kg/day, respectively. The effect of period of calving was statistically significant (P<0.01) on all test day records (TD1 to TD10 ), FLMY and F305DMY. The season of calving was statistically significant on TD2 , TD3 and TD4. The effect of regression on AFC was statistically significant effect on TD1 TO TD5 and FLMY and F305DMY. The estimates of heritability of various test day milk records ranged from 0.11(TD9) to 0.52 (TD8). Model 1 was best for all the test day milk records except TD6, FLMY and F305DMY where model 2 was adjudged as the best because of maximum likelihood value. The average estimated breeding values for traits viz. TD1, TD2, TD3, TD4, TD5, TD6, TD7, TD8, TD9, TD10, FLMY and F305DMY,were 3.94 kg/day,7.90 kg/day,8.66 kg/day, 8.68 kg/day, 8.30 kg/day, 7.91 kg/day, 7.40 kg/day, 6.73 kg/day, 6.18 kg/day, 5.49 kg/day, 2325.92 kg and 2181.42 kg respectively. The rank correlations between the ranking of the sires calculated among Test Days varied from 0.094 (TD1 and TD2) to 0.691 (TD5 and TD6) whereas product moment correlations varies from 0.072(TD1 and TD2) to 0.692 (TD5 and TD6). Rank correlation between FLMY and test days varies from 0.148 (FLMY and TD1) to 0.668 (FLMY and TD7) while product moment correlation between traits ranged from 0.181 (FLMY and TD1) to 0.667 (FLMY and TD7). Rank correlation between F305DMY and test days varies from 0.225 (F305DMY and TD1) to 0.691 (F305DMY and TD7) while product moment correlation between traits ranged from 0.239 (F305DMY and TD1) to 0.700 (F305DMY and TD5ThesisItem Restricted Identification of point mutation in GH and CAST genes and their association with growth traits of sheep(Lala Lajpat Rai University of Veterinary & Animal Sciences, Hisar, 2023-09) SUNIL KUMAR; SUNIL KUMAR; SUNIL KUMAR; . YADAV, A. S.; . YADAV, A. S.; . YADAV, A. S.The present study was carried out on 184 sheep (138 Harnali and 46 Munjal) maintained in the Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana to study the polymorphism in GH and CAST genes and its association with performance and body conformation traits. One set of primers each for targeted regions of GH and CAST gene was used. The PCR product of 422 bp size of the GH gene was amplified encompassing exon 2 and 3 in Harnali and Munjal sheep. The PCR product was digested with HaeIII restriction enzyme for detection of SNP. The digested products revealed presence of two genotypes i.e. AA and AB in the studied population. Candidate A>G mutation (A781G) was observed in our targeted sheep population. AA genotype was found to be the predominant genotype in both Harnali (0.62) and Munjal (0.96). Chi square value revealed that Harnali sheep population with respect to target locus was not under Hardy-Weinberg equilibrium. Exon and intron regions from a portion of the first repetitive domain of the CAST gene were amplified to a product of 622 bp and after digestion with Msp1 revealed monomorphic pattern in both Harnali and Munjal sheep. Period of birth was found to have significant effect on W-WT, 9M-WT and Y WT, BL, BH and PG in Harnali sheep and on 9M-WT, AGFW, HG and PG in Munjal sheep. Sex of lamb was found to have significant (P<0.05) effect on W-WT and highly significant (P<0.01) effect on 6M-WT, 9M-WT, Y-WT and AGFW in Harnali sheep. Sex of lamb showed highly significant (P<0.01) effect on 6M-WT, 9M-WT and Y-WT Munjal too. In Harnali sheep, Dam’s weight at lambing had highly significant (P<0.01) influence on all performance traits viz., B-WT, W-WT, 6M-WT, 9M-WT, Y-WT and AGFW and significant effect on BL and HG. In Munjal, Dam’s weight at lambing was having positive but non significant influence on all the performance traits. The breeding values of growth traits ranging -2.494 to 1.912 kg and -2.999 to 4.447 kg in Harnali and Munjal sheep, respectively indicated variability between the genetic worth of different individuals for growth traits. Effect of genotype was found to be significant (P<0.05) on annual grease fleece weight. AB genotype animals had significantly higher AGFW than those having AA genotype. AB genotype was found to be associated with higher annual grease fleece weight and can be used as potential candidate marker in selection criteria for improving grease fleece weight in Harnali sheep.ThesisItem Restricted Genetic evaluation of performance and disposal traits in Indian dairy cattle(Lala lajpat rai university Hisar, 2022-11) Yadav, Devesh Kumar; Malik, Z.S.The present investigation was planned to evaluate the disposal and performance traits in Hardhenu and Sahiwal cattle. The data of 2593 Hardhenu animals born to 102 Sires and 790 dams and 620 Sahiwal animals born to 35 sires and 188 dams were recorded for disposal pattern over a period of 25 years (1996 to 2020) in Hardhenu cattle and 14 years (2007 to 2020) for Sahiwal cattle. In Hardhenu cattle, 1474 (56.85 %), 313 (12.07 %), 504 (19.44 %), and 302 (11.65 %) animals were auctioned, sold, died and not-disposed, respectively. Similarly in Sahiwal cattle, 278 (44.84 %), 75 (12.10 %), 69 (11.13 %), and 198 (31.94 %) animals were sold, auctioned, died, and not disposed,respectively during the study period. The cumulative mortality in Hardhenu calves from birth to different age groups S1 (0-3M), S2 (0-6M) and S3 (0-12M) was found to be 10.22, 12.88 and 14.65%, respectively. However, for Sahiwal calves‘ mortality from birth to different age groups S1 (0-3M), S2 (0-6M) and S3 (0-12M) was found to be 6.13, 6.94 and 7.74%, respectively. Female calves had lower odds of death as compared to male calves and odds of death were maximum for calves born in rainy season in both the studied population. The major causes of calf mortality were respiratory and digestive (26.8% to 30.2%) in Hardhenu calves. However, respiratory (26.3%) in Sahiwal calves. Heritability for S1, S2 and S3 for Hardhenu calves were 0.14±0.11, 0.22±0.16 and 0.24 ± 0.19, respectively. However, for Sahiwal calves‘ heritability for S1 was estimated as 0.29±0.22. The data for performance production traits were collected from the history cum pedigree sheets of 445 Hardhenu animals born to 59 sires and 227 dams and 130 Sahiwal animals born to 18 sires and 71 dams, respectively.Least-squares analysis revealed significant effect (P<0.01) of period of calving (POC), on first lactation milk yield (FLMY), 300 days milk yield (FLMY300), first peak yield (FPY), total lactation milk yield (TLMY) in both the population. Least-squares means for FLMY, FLMY300, FLL, FPY, TLMY, AFS, AFC, FSP, FCI and FDP were 2665.68 ± 45.66(kg), 2425.52 ± 34.41(kg), 312.95 ± 3.83(days), 11.52 ± 0.15(kg), 9282.44±167.03 (kg), 957.58 ± 10.29(days), 1238.23 ± 9.23(days), 153.19 ± 5.54(days), 433.06± 5.64(days), and 111.77±4.56 (days), respectively in Hardhenu cattle. Similarly for Sahiwal cattle least square means for FLMY, FLMY300, FLL, FPY, TLMY, AFS, AFC, FSP, FCI and FDP were 1969.23 ± 57.20 (kg), 1921.68 ± 51.76 (kg), 254.59 ± 5.17(days), 9.49± 0.21(kg), 6563.33±256.98 (kg), 998.82 ± 116.93 (days), 1277.41 ± 17.88 (days), 165.49 ± 9.68(days), 455.08±9.78(days) and 209.30±9.64 (days), respectively.On the basis of likelihood ratio test (LRT) model 1 was found as best fitted model for all the performance traits for both the studied population, except FLL trait in Sahiwal cattle for which model 4 was considered as best fitted model. Direct heritability (h2 ) for for FLMY, FLMY300, FLL, FPY, TLMY, AFS, AFC, FSP, FCI and FDP was estimated as 0.34,0.41,0.03, 0.37, 0.16, 0.15, 0.11, 0.12, 0.17, 0.18, respectively in Hardhenu cattle. However, the direct heritabilitiy (h2 ) estimate for FLMY, FLMY300, FLL, FPY, TLMY, AFS, AFC, FSP, FCI and FDP was found as 0.28, 0.30, 0.30, 0.21,0.21,0.10, 0.15, 0.12, 0.15 and 0.13, respectively for Sahiwal population.Estimates of genetic and phenotypic correlations among production traits were positive in both populations. Genetic and phenotypic trends indicated that there are positive trends over the years in both the studied population.ThesisItem Restricted Identification of point mutation in GH and CAST genes and their association with growth traits of sheep(Lala lajpat rai university Hisar, 2022-09) Sunil Kumar; YADAV, A. S.The present study was carried out on 184 sheep (138 Harnali and 46 Munjal) maintained in the Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana to study the polymorphism in GH and CAST genes and its association with performance and body conformation traits. One set of primers each for targeted regions of GH and CAST gene was used. The PCR product of 422 bp size of the GH gene was amplified encompassing exon 2 and 3 in Harnali and Munjal sheep. The PCR product was digested with HaeIII restriction enzyme for detection of SNP. The digested products revealed presence of two genotypes i.e. AA and AB in the studied population. Candidate A>G mutation (A781G) was observed in our targeted sheep population. AA genotype was found to be the predominant genotype in both Harnali (0.62) and Munjal (0.96). Chi square value revealed that Harnali sheep population with respect to target locus was not under Hardy-Weinberg equilibrium. Exon and intron regions from a portion of the first repetitive domain of the CAST gene were amplified to a product of 622 bp and after digestion with Msp1 revealed monomorphic pattern in both Harnali and Munjal sheep. Period of birth was found to have significant effect on W-WT, 9M-WT and Y WT, BL, BH and PG in Harnali sheep and on 9M-WT, AGFW, HG and PG in Munjal sheep. Sex of lamb was found to have significant (P<0.05) effect on W-WT and highly significant (P<0.01) effect on 6M-WT, 9M-WT, Y-WT and AGFW in Harnali sheep. Sex of lamb showed highly significant (P<0.01) effect on 6M-WT, 9M-WT and Y-WT Munjal too. In Harnali sheep, Dam’s weight at lambing had highly significant (P<0.01) influence on all performance traits viz., B-WT, W-WT, 6M-WT, 9M-WT, Y-WT and AGFW and significant effect on BL and HG. In Munjal, Dam’s weight at lambing was having positive but non significant influence on all the performance traits. The breeding values of growth traits ranging -2.494 to 1.912 kg and -2.999 to 4.447 kg in Harnali and Munjal sheep, respectively indicated variability between the genetic worth of different individuals for growth traits. Effect of genotype was found to be significant (P<0.05) on annual grease fleece weight. AB genotype animals had significantly higher AGFW than those having AA genotype. AB genotype was found to be associated with higher annual grease fleece weight and can be used as potential candidate marker in selection criteria for improving grease fleece weight in Harnali sheepThesisItem Open Access Genetic evaluation of economic traits in different generations of synthetic white leghorn strain(LUVAS, 2018) Manjeet; Dalal, D.S.The data collected from records (2012-13 to 2016-17) of white leghorn strain maintained at the poultry farm of department of Animal Genetics and Breeding, LUVAS, Hisar were analysed to estimate genetic and phenotypic parameters, to estimate and study relationship between sire’s breeding values of various economic traits and to predict 40 weeks egg production from part period egg production and early performance. The effect of generation and hatch with in generation were significant (P<0.01) on BW20, BW40, AFE, EW40, EM40, EPP1 EPP2, EPP3, EPP4, EP24, EP28, EP32, EP36 and EP40 respectively. The pooled means for BW20, BW40, AFE, EW40, EM40, EPP1, EPP4, EP24, EP28, EP32, EP36 and EP40 were observed as 1360.43±7.34 g, 1733.25±12.16 g, 149.90±1.09 days, 52.27±0.27 g, 4269.18±69.26 g, 16.84±0.60 eggs, 20.34±0.27 eggs, 19.15±0.27 eggs, 17.86±0.63 eggs, 7.64±0.76 eggs, 24.47±1.06 eggs, 44.81±1.22 eggs, 63.95±1.44 eggs and 81.79±1.51 eggs, respectively. The heritability estimates for pooled data were observed as 0.45±0.13, 0.42±0.12, 0.28±0.08, 0.43±0.12, 0.32±0.11, 0.46±0.12, 0.31±0.11, 0.28±0.10, 0.38±0.11, 0.31±0.11, 0.42±0.13, 0.45±0.13, 0.45±0.12 and 0.45±0.13 for BW20, BW40, AFE, EW40, EM40, EPP1, EPP2, EPP3, EPP4, EP24, EP28, EP32, EP36 and EP40, respectively. The genetic and phenotypic correlations of BW20 were negative with age at first egg (AFE). The genetic and phenotypic correlations of body weight at 20 weeks of age with BW40 were significant and high in magnitude (0.67±0.40 and 0.59**±.02, respectively), however with EW4o and EM40 the correlations were positive with low in magnitude,EPP1had moderate genetic (0.46±0.17) and phenotypic (0.25**±.02) correlation with EPP2, while the EPP3 these were moderate at genetic scale (0.37±0.19) and low at phenotypic scale (0.12*±.02). EPP4 had negligible genetic and phenotypic correlations with EPP1. EPP3 had high positive genetic correlation with EP24, however, the correlation on phenotypic scale was negligible. Genetic and phenotypic correlations of EPP3 with EP28 were low positive; with EP32 were moderate positive, whereas the corresponding correlations with EP36 and EP40 were high positive. The expected direct response for performance traits were 26.85g, 46.86 g, 1.39 d, 0.44g and 66.97 for BW20, BW40, AFE, EW40 and EM40, respectively. For part egg production traits direct response ranged from0.39 (EPP3) to o.57 (EPP4) eggs, whereas, corresponding direct response for cumulative part egg production traits ranged from 0.65 (EP25) to 1.58 (EP40) eggs. The phenotypic trend of all other production, part egg production and cumulative part egg production showed positive trend. The product moment and rank correlations between sires’ EBVs for BW20 with those of BW40 were high positive and significant i.e. 0.62** and 0.64**, respectively. The product moment and rank correlations between sires’ EBVs for EP24 (Egg production upto 24 weeks of age) with all other part cumulative egg production traits were found to be positive significant with high magnitude. The product moment and rank correlation of performance traits are negligible with part egg production and cumulative part egg production traits. The sires’ EBVs for EPP3 and EPP4 had moderate to high positive product moment correlations with sires’ EBVs for all part cumulative egg production traits whereas the corresponding correlations of EPP1 with these traits were positive with low to moderate in magnitude. The prediction equations were developed by using stepwise regression procedure for estimation of 40 week egg production based on performance, part egg production and cumulative part egg production traits. Prediction equation for 40 weeks egg production showed highest coefficient of determination (90%), when only EP36 was entered in the prediction equationThesisItem Open Access Genetic evaluation of economic traits in different generations of synthetic White leghorn strain(LUVAS, 2018) Manjeet; Dalal, D.SThe data collected from records (2012-13 to 2016-17) of white leghorn strain maintained at the poultry farm of department of Animal Genetics and Breeding, LUVAS, Hisar were analysed to estimate genetic and phenotypic parameters, to estimate and study relationship between sire’s breeding values of various economic traits and to predict 40 weeks egg production from part period egg production and early performance. The effect of generation and hatch with in generation were significant (P<0.01) on BW20, BW40, AFE, EW40, EM40, EPP1 EPP2, EPP3, EPP4, EP24, EP28, EP32, EP36 and EP40 respectively. The pooled means for BW20, BW40, AFE, EW40, EM40, EPP1, EPP4, EP24, EP28, EP32, EP36 and EP40 were observed as 1360.43±7.34 g, 1733.25±12.16 g, 149.90±1.09 days, 52.27±0.27 g, 4269.18±69.26 g, 16.84±0.60 eggs, 20.34±0.27 eggs, 19.15±0.27 eggs, 17.86±0.63 eggs, 7.64±0.76 eggs, 24.47±1.06 eggs, 44.81±1.22 eggs, 63.95±1.44 eggs and 81.79±1.51 eggs, respectively. The heritability estimates for pooled data were observed as 0.45±0.13, 0.42±0.12, 0.28±0.08, 0.43±0.12, 0.32±0.11, 0.46±0.12, 0.31±0.11, 0.28±0.10, 0.38±0.11, 0.31±0.11, 0.42±0.13, 0.45±0.13, 0.45±0.12 and 0.45±0.13 for BW20, BW40, AFE, EW40, EM40, EPP1, EPP2, EPP3, EPP4, EP24, EP28, EP32, EP36 and EP40, respectively. The genetic and phenotypic correlations of BW20 were negative with age at first egg (AFE). The genetic and phenotypic correlations of body weight at 20 weeks of age with BW40 were significant and high in magnitude (0.67±0.40 and 0.59**±.02, respectively), however with EW4o and EM40 the correlations were positive with low in magnitude,EPP1had moderate genetic (0.46±0.17) and phenotypic (0.25**±.02) correlation with EPP2, while the EPP3 these were moderate at genetic scale (0.37±0.19) and low at phenotypic scale (0.12*±.02). EPP4 had negligible genetic and phenotypic correlations with EPP1. EPP3 had high positive genetic correlation with EP24, however, the correlation on phenotypic scale was negligible. Genetic and phenotypic correlations of EPP3 with EP28 were low positive; with EP32 were moderate positive, whereas the corresponding correlations with EP36 and EP40 were high positive. The expected direct response for performance traits were 26.85g, 46.86 g, 1.39 d, 0.44g and 66.97 for BW20, BW40, AFE, EW40 and EM40, respectively. For part egg production traits direct response ranged from0.39 (EPP3) to o.57 (EPP4) eggs, whereas, corresponding direct response for cumulative part egg production traits ranged from 0.65 (EP25) to 1.58 (EP40) eggs. The phenotypic trend of all other production, part egg production and cumulative part egg production showed positive trend. The product moment and rank correlations between sires’ EBVs for BW20 with those of BW40 were high positive and significant i.e. 0.62** and 0.64**, respectively. The product moment and rank correlations between sires’ EBVs for EP24 (Egg production upto 24 weeks of age) with all other part cumulative egg production traits were found to be positive significant with high magnitude. The product moment and rank correlation of performance traits are negligible with part egg production and cumulative part egg production traits. The sires’ EBVs for EPP3 and EPP4 had moderate to high positive product moment correlations with sires’ EBVs for all part cumulative egg production traits whereas the corresponding correlations of EPP1 with these traits were positive with low to moderate in magnitude. The prediction equations were developed by using stepwise regression procedure for estimation of 40 week egg production based on performance, part egg production and cumulative part egg production traits. Prediction equation for 40 weeks egg production showed highest coefficient of determination (90%), when only EP36 was entered in the prediction equationThesisItem Open Access Genetic evaluation of performance traits in harnali sheep using different models(LUVAS, 2018) LALIT; Malik, Z.SThe 20 years (1997-2016) data of growth, reproduction and wool traits of a synthetic population of Harnali sheep developed by inter-se mating of half-breds of Corriedale and Russian Merino with Nali maintained at Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar were utilized for the present study. The overall least squares mean for birth weight (BW), weaning weight (WW), six month body weight (SMW), one year body weight (YBW), age at first lambing (AFL), weight at lambing (WL), average lambing interval (ALI), grease fleece weight (GFW), staple length (SL), fibre diameter (FD) and medullation percentage (MP) were 3.26 kg, 12.85 kg, 16.96 kg, 24.13 kg, 736.42 days, 29.37 kg, 373.42 days, 1746.89 gm, 5.64 cm, 25.22 μ and 26.68 %, respectively. The effect of period of birth, sex of lamb and dam‟s weight at lambing were significant for all the growth traits under study. The effect of period of birth, dam‟s weight at lambing were significant for all the reproduction and wool traits The heritability estimates for growth traits were moderate to high, low for reproduction traits and moderate to high for wool traits. The average breeding values of Harnali sire using dfferent univariate, bivarate and multivariate animal models (Wombat, 2005) were estimated as 3.28 kg, 12.91 kg, 17.02 kg , 24.14 kg, 736.24 days, 28.43 kg, 1759.81 gm. 5.09 cm, 25.34 μ and 26.67 % for BW, WW, SMW, YBW, AFL, WFL, ALI GFW, SL, FD and MP respectively. Criteria of comparison of different models showed that multivariate model have higher value of coefficient of determination (R2value) and lowest Sum of squares due to error (MSSE), Akaike information criterion (AIC), Bayesian information criterion (BIC) and Log L value which indicated that multivariate animal model is more accurate than other models. Keeping in view the high heritability of SMW and its favourable correlations with body weights at later ages and grease fleece weight, it is concluded that selection on the basis of SMW would be the best approach to improve growth and wool production in Harnali sheep.
