Comparative mortality and predation in relation to egg production traits of Rhode Island Red, Black Australorp and Hyblack laying hens in scavenging production systems of rural Malawi.

Abstract excerpt

1. Black Australorp (BA), Rhode Island Red (RIR), and Hyblack (HB) birds were used in farm and field scavenging systems in Malawi, to study mortality through disease and predation in relation to laying performance. 2. Predation was higher in BA than HB. 3. Mortality through disease was higher in RIR than BA and HB. 4. Crossbred HB birds show the lowest combination of mortality and predation, suggesting a...

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