Establishment of lamb meat production system by raising Suffolk lamb in high growth rate at early age
2006
Deoka, K.(Hokkaido. Konsen Agricultural Experiment Station, Nakashibetsu (Japan))
In a seasonal breeding system of Japanese sheep production, Suffolk lambs born between February and March had not achieved marketing body-weight at high demand season from May to June. There were few studies about a system of raising lambs, especially twin lambs, to achieve marketing body-weight rapidly. The purpose of this study was to establish lamb meat production system by raising Suffolk lambs in a high growth rate during 4 months after birth. Three series of experiments were conducted on the three main phases of lamb meat production system. The first series was concerned in factors that effect lamb growth rate. Postnatal behaviours in lamb, development of ability to digest solid feeds in lamb, type and level of concentrate for lamb were investigated. The second was conducted on weaning procedures of lamb. Effects of weaning month of age and early weaning one of twin lambs on growth rate were investigated. The third was concerned in a relationship between lamb body-weight and carcass characteristics. Carcass characteristics and appropriate marketing body-weights in male and female lambs were investigated. According to these series of studies, the system of lamb meat production system was discussed.
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