Choi J H, Han I K
Poult Sci. 1983 Feb;62(2):341-4. doi: 10.3382/ps.0620341.
Experimental diets consisting of two levels of total phosphorus (.30 and .75%) and three different treatments of supplemental sodium (.35% NaCl, 1.40% NaCl, and .35% NaCl plus 1.50% NaHCO3) were fed in a 2 X 3 factorial arrangement to laying hens for 16 weeks. The latter two treatments of sodium were designed to supply the same level of sodium (.55%) from different chemical forms. Hens fed .30% phosphorus laid significantly (P less than .01) less eggs than those fed .75% phosphorus. A highly significant (P less than .01) interaction was found between phosphorus and sodium treatments. The high level of sodium from either chloride or bicarbonate decreased egg production at the lower level of phosphorus and increased it when the higher level of phosphorus was fed. Sodium bicarbonate affected egg production more strongly than sodium chloride did. There were no significant treatment effects on egg weight and egg shell weight. Addition of sodium bicarbonate to the low phosphorus diet significantly (P less than .05) decreased feed consumption of the hen. Supplemental sodium bicarbonate with either level of dietary phosphorus significantly (P less than .05) increased percent nitrogen retention of the hen, but excessive sodium chloride did not.
将由两种总磷水平（0.30%和0.75%）以及三种不同的补充钠处理（0.35%氯化钠、1.40%氯化钠和0.35%氯化钠加1.50%碳酸氢钠）组成的实验日粮以2×3析因设计喂给产蛋母鸡16周。后两种钠处理旨在从不同化学形式提供相同水平的钠（0.55%）。饲喂0.30%磷的母鸡产蛋量显著（P<0.01）低于饲喂0.75%磷的母鸡。在磷和钠处理之间发现了极显著（P<0.01）的交互作用。在较低磷水平时，来自氯化物或碳酸氢盐的高水平钠会降低产蛋量，而在饲喂较高磷水平时则会增加产蛋量。碳酸氢钠对产蛋量的影响比氯化钠更强。对蛋重和蛋壳重没有显著的处理效应。在低磷日粮中添加碳酸氢钠显著（P<0.05）降低了母鸡的采食量。在两种日粮磷水平下补充碳酸氢钠均显著（P<0.05）提高了母鸡的氮保留率，但过量的氯化钠则没有。
