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During winter season, when the environmental temperature goes below the thermoneutral zone, it affects the performance of
dairy cows. The objective of current study was to evaluate the influence of various types of housing systems on productive and
physiological performance of Sahiwal cows in winter season. For this purpose, Twelve Sahiwal cows almost same weight
(363±5kg), milk yield (6±0.5Lday-1
) and 2nd parity (mid-lactation) were assigned to three experimental groups with four cows
in each group. These groups are specified as; conventional barn (CB), open shed+curtain (O+C) and open shed (O) reared
cows. Temperature-humidity index values were 63.8, 61.1 and 57.9 in CB, O+C and O groups respectively. Results showed
that various types of housing systems had a significant effect on the performance of Sahiwal cows. The intake of dry matter
was significantly higher in O reared cows (11.2 kg day-1
) followed by the O+C (10.3 kg day-1
) and CB reared cows (10.2 kg
day-1
). The intake of water was maximum in CB reared cows (17.7 L day-1
) and was minimum in open shed reared O reared
cows(14.4 L day-1
) cows. Similarly, milk yield was maximum in CB readed cows (7.8 L day-1
) and was minimum in O reared
cows(5.2 L day-1
) cows. No differences were observed in the composition of milk in CB, O+C and O reared cows. The rectal
temperature (101.6 °F) was significantly lower in O reared cows followed by O+C and CB reared cows. Similarly, respiration
rate was also lower (17.06 breaths min-1
) in O reared cows followed by O+C and CB reared cows. Serum cortisol levels were
significantly higher (21.1 ng/ml) in O reared cows as compared to other dietary treatments. It was concluded that production
performance and physiological norms of indigenous Sahiwal cows can be improved by keeping them in conventional closed
barn during the winter season.
Keywords: Housing, cold stress, physiological norms, Sahiwal cows.
Ghayyoor Ahmad, , Muhammad Iqbal Mustafa, Shehryaar Shahid. (2022) Productive performance and serum cortisol level of Sahiwal cows under different housing systems during Winter season, Pakistan Journal of Agricultural Sciences, Volume 59, Issue 2.
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