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International Journal of Cow Science
Year : 2005, Volume : 1, Issue : 1
First page : ( 33) Last page : ( 35)
Print ISSN : 0973-2241.

Effect of season of first calving on productive herd life, longevity and life time calf production in Tharparkar cow

Poonma Ram1, Goswami SC2

1Department of Livestock Production & Management, Apollo College of Veterinary Medicine, Jaipur-302015 (Rajasthan).

2Department of Livestock Production & Management, College of Veterinary & Animal Science, Rajasthan Agricultural University, Bikaner 334 001, Rajasthan, India.

Abstract

In the Present study, the effect of season of first calving was assessed on productive herd life (number of days in milk from the date of first calving to the date of disposal of cows from herd either due to culling or death), longevity (number of days from the date of birth to date of disposal of cows from herd either due to culling or death) and life time calf production (total calves born, total female calves born and total female calves reaching milking herd per cow). Least squares means and their standard error were estimated for different season of first calving groups for each trait. The overall means for productive herd life (days), longevity (days), total calves born to each cow, total female calves born to each cow, total female calves reaching milking herd from each cow were 1597.30 ± 1056.47 days, 3341.15 ± 1167.79 days, 4.37 ± 2.71, 2.14 ± 1.84 and 0.91 ± 1.08, respectively. The effect of season of first calving was non-significant on all traits i.e. productive herd life, longevity, total calves born to each cow, total female calves born to each cow and total female calves reaching milking herd from each cow.

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Key words

Tharparkar, first calving, productive herd life, longevity, life time calf production.

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