A comparison of production and economic performances of broilers raised under naturally ventilated open-house and tunnel ventilated closed-house systems in Sri Lanka
Abstract:The objective of this study was to compare production and economic performances of broilers raised under naturally ventilated open house (OH) and tunnel ventilated-closed house (CH) conditions in Sri Lanka. The analysis used production and economic parameters of 130 OH (130 farms) and 88 CH (5 farms) production cycles. Open house farms were selected using proportionate random sampling technique while closed houses were purposively selected.The sum of the Percentages of mortalities and disable birds was signifi… Show more
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