National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation was carried out with the objective of performance appraisal of HF x Gir halfbred with respect to reproduction and production traits. The performance records of 349 HF x Gir halfbred sired by 44 bulls were collected for reproduction and production traits spread over a period of 46 years (1972-2017) from Research Cum Development Project on Cattle, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar (Maharashtra). The overall least squares means for age at first calving (AFC), first service period (FSP), first dry period (FDP), first calving interval (FCI) and first lactation 300 days milk yield (FL300DMY) were 954.82± 7.80 days, 124.00 ± 3.72 days, 78.34 ± 2.58 days, 403.53 ± 3.78 days and 2446.20 ± 42.33 kg, respectively in HF x Gir halfbred. Further, the least square analysis revealed on non-significant effect of season of calving. The effect of period of birth/calving was found to be highly significant on AFC, FSP, FL300DMY, FDP and FCI. However, the sire was found to be significant (P<0.05) effect on AFC, FL300DMY and FDP, while non- significant in FSP and FCI. The heritability of all traits was moderate in magnitude which indicated these traits are more influenced by selection. The highly significant genetic and phenotypic correlation was found between production and reproduction traits.
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