Fox predation as a cause of lamb mortality.
1966
Neo-natal lamb mortality was investigated in a flock of 545 Merino ewes under two management systems during lambing at Minnipa, South Australia. Lamb mortalities of 21 and 27% in the drifted and set stocked groups respectively were not significantly different. Both primary predation (P < 0.05) and mutilation of lamb carcases (P < 0.001) were higher in the set stocked group. The fox was responsible for most deaths due to primary predation; of four foxes killed, the stomachs of three contained fresh lamb carcase. Proximity to native scrub and the system of management are suggested as contributing factors to the higher predation-mutilation pattern in the set stocked group.
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