Effect of summer heat stress on growth rate and feed consumption of Sahiwal calves.
1993
Babar M.E. | Rasool S. | Ahmad F. | Akram M. | Latif M.
The effect of summer heat stress on the growth rate and feed consumption was studied in two phases on 50 Sahiwal;25 male and 25 female calves in 5 groups of 10 animals each. These 5 groups were allotted 5 treatments randomly viz T1 (Shade (cattle shed) + electric fans), T2 (Shade (cattle shed) + electric ceiling fans + showering wetting), T3 (Shed + showering/ wetting),T4 (Three shade + wetting (showering) and T5 (control i.e., conventional managemental system used in Livestock Experiment Station, Bahadurnagar, Okara. In phase-l, animals kept under shade with one hour showering thrice a day gained significantly (P < 0.01) higher weight gain compared to all other groups followed by those kept under shade and showering with additional provision of electric ceiling fans. The fodder consumption on the other hand was significantly higher (P < 0.01) in females kept under conventional management system. In phase-ll, the calves of both sexes when kept under shade coupled with electric ceiling fans gained (P < 0.01) significantly less weight while the differences among other groups were statistically non-significant. However, non-significant differences in respect of fodder consumption was observed in both the sexes kept under various experimental conditions. It is evident from the results of the present study that the temperature effects are more pronounced on the body weight gain while it had little effects on the feed consumption.
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