Body weight, daily gain and mortality of native chickens from sires and dams with high and low-immunity response to newcastle disease
1996
Amnuay Leotaragul | Somkuan Punyavee | Santisuk Daungjun (Chiangmai Livestock Research and Breeding Center, Chiang Mai (Thailand))
Study was made of data on 1,058 progeny of 80 sires and 240 dams native chickens. Male native chickens had higher (P0.01) body weights and daily gains after 4 weeks than females. Native chickens from high immunity sires and dams were heavier (P0.01) body weights and daily gains at 4 weeks than another group. At 8, 12, 16 weeks of age, body weights and daily gains of both groups were not significant. For body conformation at 8 weeks, only body width of chickens from high immunity sires and dams was significantly larger (P0.05). The chickens from high and low immunity sires and dams didn't differ in mortality rate (P0.05), but there were trend that the chickens from high immunity sires and dams had lower mortality than another group.
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