Reproductive performance of FG GIR Halfbred

AT Lokhande; ST Pachpute; SD Mandakmale; YN Patil

Reproductive performance of FG GIR Halfbred

Author(s):

AT Lokhande, ST Pachpute, SD Mandakmale and YN Patil

Abstract:

The data on reproduction and production traits of FG crosses of Gir maintained at R.C.D.P. on cattle, M.P.K.V., Rahuri (Maharashtra) were collected from year 1972 to 2014. The overall least squares means of AFC for FG genetic group were 971.07±16.41 days. In FG, half-bred the DMRT indicated that the heifers born during P2 (1980-1985) (883.17±16.97) and P6 (2004-2009) (903.75±30.17) had significantly lower AFC (days), than born in P4 (1992-1997) (1095.17 ± 31.79) and P3 (1986-1991) (1051.50±40.08). The variation due to season of birth in AFC was non-significant in FG genetic group. Although the lowest AFC was observed in heifers born during Rainy season (965.36±21.61 days). Significantly lowest AFC was noticed in G1 generation cows (816.53±14.16). The overall least squares mean of OP, it was 76.55±2.08 days. The non-significant effect of period of calving, season of calving, lactation order and AFC group on OP observed.

The overall LSQ means of SP in FG genetic group cows was 133.26±1.84 days. The variation due to SOC, LO and AFC group on SP was non-significant. The effect of generation was significant on SP. In FG group the lowest SP observed in G₈ (98.00±18.87) while highest in G₄ (150.14±4.67). The overall least squares means of CI in FG, group cows were 409.28±2.67 days. The Generation wise least squares means for highest CI in FG group observed in G₈(435.63 ± 23.63), days. While the lowest CI observed in G₅ (402.57 ± 7.37) days, respectively. The effect of genetic group was significant on CI of group.

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