A Comparison of the Reproductive Performance of Javanese Thin-tail and Border Leicester X Merino Ewes in Indonesia
نویسندگان
چکیده
Lamb production was measured over an 18 month period from 30 Javanese thintail (JTT) and 30 Border Leicester x Merino (BLM) ewes run continually with rams of several breeds. The study was carried out in West Java, Indonesia. One hundred and forty-eight lambs were born to JTT and BLM ewes respectively, the difference being associated with both a larger number of lambings and a higher incidence of multiple births from JTT ewes. Lamb mortality did not vary significantly between breeds. Mean growth rates from birth to weaning were 162 and 216 g/day for lambs from JTT and BLM ewes respectively, but the total live weight of lamb weaned was 58% higher from JTT than from BLM ewes because of their superior reproductive performance.
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