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Position: Home > Articles > Effects of NH_4Cl and NaHCO_3 on Broilers During Chronic Heat Stress Animal Husbandry & Veterinary Medicine 1999 (5) 5-6

NH_4Cl和NaHCO_3对肉用仔鸡慢性热应激的影响

作  者:
夏东;李如治
单  位:
南京农业大学动物科技学院
关键词:
肉用仔鸡;慢性热应激;呼吸性碱中毒;生产性能
摘  要:
320 羽1 周龄健康肉用雏鸡被随机分成4 组, 经1 周的适应后进行试验。组Ⅰ、组Ⅱ、组Ⅲ和组Ⅳ的日粮处理分别为: 基础日粮(B, 对照组) , B+ 0-5 % NaHCO3 , B+ 0-5 % NaHCO3 + 1 % NH4Cl 和B+ 1 % NH4Cl。试验为期5 周。研究日粮中添加NaHCO3 和NH4Cl 对慢性热应激肉用仔鸡的血液pH、CO2 分压(PCO2) 及生产性能的影响。结果表明: 在慢性热应激(23 ~35 ℃) 条件下, 肉用仔鸡未发生呼吸性碱中毒, 组Ⅱ的血液PCO2高于对照组( P< 0-01) , 增重比对照组多9-49 % ; 组Ⅲ血液pH 低于组Ⅰ和组Ⅱ( P < 0-01) , 血液的PCO2 高于组Ⅰ和组Ⅳ( P < 0-01) , 增重比对照组多8-19% 。组Ⅳ的血液pH 值极显著低于对照组( P < 0-01) , 比对照组少增重2-5 %
译  名:
Effects of NH_4Cl and NaHCO_3 on Broilers During Chronic Heat Stress
作  者:
Xia Dong and Li Ruzhi (College of Animal Science and Technology,Nanjing Agric Univ,Nanjing 210095)
关键词:
broiler;chronic heat stress;respiratory allkalosis;performance
摘  要:
Three hundred and twenty broilers were randomly divided into four groups.After acclimated for one week, they were fed with basal diet(B,Control group,Croup Ⅰ),B+0 5%NaHCO 3(Group Ⅱ),B+0 5%NaHCO 3+1%NH 4Cl(Group Ⅲ)and B+1%NH 4Cl(Group Ⅳ)respectively for 5 weeks to examine the effects of NH 4Cl and and NaHCO 3 on the performance,blood pH and pressure of CO 2(PCO 2)of broilers during chonic heat stress(23~35℃).No birds suffered from respiratory alkalosis in group Ⅰ.As compared with group Ⅰ,blood PCO 2 in group Ⅱ increased significantly(P<0 01),body weight gain in group Ⅱ increased by 9 49%.Blood pH in group Ⅲ was lower than in group Ⅰ and group Ⅱ(P<0 01),blood PCO 2 in group Ⅲ was higher than in group Ⅰ and group Ⅳ.Body weight gain in group Ⅳ inceased by 8 1%.Blood pH was reduced(P<0 01)and body weight gain was reduced by 2 5% in group Ⅳ.

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