EFFECT OF HETEROSIS ON REPRODUCTION AND PRODUCTION TRAITS IN GIR CROSSES
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Date
2024
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MPKV, Rahuri
Abstract
The overall least squares means of Service period in FG, FJG and R
genetic group cows were 133.26 ± 1.84, 141.75 ± 1.70 and 130.49 ± 3.47, respectively.
The period of calving had non-significant effect on SP in FG and R genetic groups and
significant in FJG group. The effect of generation had significant effect on CI. The
overall generation CI in FG, FJG and R group were 414.34 ± 3.88, 395.26 ± 4.23 and
352.74 ± 16.89 days, respectively. The Generation wise least squares means for highest
CI in FG, FJG and R group observed in G8 (435.63 ± 23.63), G5 (421.32 ± 8.29) and G1
(400.68 ± 9.85) days, respectively. While the lowest CI observed in G5 (402.57 ± 7.37),
G9 (363.66 ± 26.21) and G5 (267.33 ± 77.61) days, respectively. The effect of genetic
group was significant on CI of group. The CI in R group was significantly lowest than
FG (409.28 ± 2.67) and FJG (403.22 ± 2.47), respectively. The overall least squares
means of LMY in FG, FJG and R group cows were 3487.35 ± 28.08, 3240.84 ± 25.99
and 2636.12 ± 52.23, respectively.