REPRODUCTION AND PRODUCTION PERFORMANCE OF THREE-BREEDS CROSSES IN CATTLE*
Citation :- REPRODUCTION AND PRODUCTION PERFORMANCE OF THREE-BREEDS CROSSES IN CATTLE*.Indian Journal Of Animal Research.2009.(43):32-36
The reproduction and production performance of three-breeds crosses of Holstein Friesian (F),
Jersey (J) and Hariana (H) breeds of cattle (½F ¼J ¼H) maintained during 1976 to 1996 at Indian
Veterinary Research Institute Izatnagar was studied. The mean age at first fertile service (AFFS) and
age at first calving (AFC) were 772.07±25.12 and 1053.59±24.86 days respectively and both these
traits showed significant (P 0.01) effect of periods of tudy. The first service period (FSP) averaged
to 166.61±11.11 days and showed significant effect of seasons and periods. The first lactation length
(FLL) averaged to 317.72±6.87 days and showed significant (P < 0.01) effect of periods. The first
dry period (FDP) averaged to 127.98±12.70 days did not show any effect of generations, seasons
and periods of study. The first lactation milk yield (FLMY) and first standard lactation milk yield
(FSLMY) averaged to 1851.69±114.70 and 1741.78±96.13 kg respectively. The present investigations
revealed that parent crosses of Holstein Friesian, Jersey and Hariana breeds had significantly higher
first standard lactation milk yield than inter-se crosses of cattle. The cold environment of
winter season had significant effect in improving first service period of crossbred cows in
Crosses in cattle
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