关键词: 肉鸡, 腹水症, 生产性能, 利用率

Abstract: An experiment was conducted to investigate the effect of ascites syndrome in broilers(AS) on the availability of the energy and nutrient.120 Avian chickens of 1 day old were randomly divided into 2 groups(control group and test group).There were 6 replicates with 10 broilers each.In test group,AS was induced with 3,3',5-triiodothyronine(T₃,1.5 mg/kg) and low ambient temperature(LAT).The results show that:T₃ and LAT can successfully induce AS in broilers,leading to 66.7% incidence and 23.3% mortality.AS significantly decreases performance(P<0.05) and increases heart index of broilers(P<0.05).During the 2^nd week,the availability of the energy and the ether extract are obviously significantly lower(P<0.01) and crude protein significantly lower(P<0.05),most amino acid is also obviously significantly lower except arginine in test group than in control group.During the 3^rd week,the availability of the nutrient and the energy is lower than in control group than in control group while protein keeps the same(P<0.05) in test group.The results indicate that the high AS incidence rate makes the availability of the energy and nutrient decline and growth tardiness in broilers.

Key words: broilers, ascites, growth performance, availability