摘要
用２１羽六周龄ＡＡ仔鸡随机分成相等的三组，研究ＮａＨＣＯ３和ＣａＣｌ２作为饲粮电解质平衡（ＤＣＡＢ）的调节剂对肉用仔鸡养分利用率和生长性能的影响。结果表明，肉用仔鸡的干物质采食量在各处理间无明显差异。Ｃ组（添加ＮａＨＣＯ３，饲粮ＤＣＡＢ２０９ｍｍｏｌｋｇ－１）的干物质、有机物和粗蛋白质的利用率最高，比对照组（ＤＣＡＢ１１９）分别提高７．３％（Ｐ＞０．０５）、７．０％（Ｐ＞０．０５）和２０．５％（Ｐ＞０．０５），比Ｂ组（添加ＣａＣｌ２，ＤＣＡＢ－５５）分别提高１９．８％（Ｐ＜０．０１）、１７．９％（Ｐ＜０．０１）和９６．３％（Ｐ＜０．０１）。与对照组相比，Ｃ组仔鸡的日增重提高４６．５％（Ｐ＞０．０５），而Ｂ组降低了２６．８％（Ｐ＞０．０５）。每千克增重的耗料量Ｃ组比对照组降低２．１５ｋｇ，而Ｂ组增高２．５０ｋｇ。Ｃ组的血浆ＨＣＯ－３浓度显著高于Ｂ组（Ｐ＜０．０５），也略高于对照组（Ｐ＞０．０５）。而全血ｐＨ及血浆Ｎａ、Ｋ、Ｃａ、Ｐ的浓度在各处理间无显著差异（Ｐ＞０．０５）。可以推断，添加ＮａＨＣＯ３增加饲粮ＤＣＡＢ至２０９ｍｍｏｌｋｇ－１。
Twenty-one AA broilers aged six weeks were used to investigate the effect of supplementary NaHCO_3 and CaCl_2 as regulators of dietary cation-anion balance (DCAB) on efficiency of nutrients utilization and growth of broilers The results were shown as follows Little difference was found in dry matter intake by broilers among different treatments The efficiency of utilization of dry matter, organic matter and crude protein by broilers was 73% (P>005), 70% (P>005) and 205% (P>005) higher in group C with inclusion of NaHCO_3 in diet (DCAB 209 mmol kg^-1) than that in control (DCAB 119), and also increased by 198% (P<0.01), 179% (P<0.01) and 963% (P<001) over group B with inclusion of CaCl_2 (DCAB -55), respectively The liveweight gain of broilers increased by 46.5% (P>005) in group C and decreased by 268% (P>0.05) in group B in comparison with control Feed conversion ratio was 215 kg kg-1 lower in group C and 250 kg kg-1 higher in group B than that in control Broilers in group C had significantly (P<005) higher concentration of plasma HCO-3 than those in group B, and also slightly higher concentration than those in control (P>005) No significant differences (P>005) were found among different treatments in the blood pH and concentrations of plasma Na, K, Ca and P
出处
《浙江农业学报》
CSCD
1997年第1期40-44,共5页
Acta Agriculturae Zhejiangensis
关键词
肉用鸡
仔鸡
日料
电解质平衡
生长性能
sodium bicarbonate
calcium chloride
dietary cation-anion balance
efficiency of nutrients utilization
growth rate
broilers
