分别添喂4种酸化剂对蛋鸡产蛋性能和表观日粮利用率影响的比较

Comparison of the Effects of 4 Acidifiers on Production and Metabolism of Layer

试验比较研究了柠檬酸、乳酸、磷酸和双乙酸钠 4种酸化剂对新罗曼蛋鸡生产性能的影响。结果表明 ,在产蛋鸡日粮中分别添加 2 %的柠檬酸、乳酸、磷酸和双乙酸钠 ,其中柠檬酸、乳酸和磷酸可分别提高蛋重 2 .6 7%(P <0 .0 5 ) ,2 .4 % (P <0 .0 5 )和 1.5 7% (P<0 .0 5 ) ;分别增加蛋壳钙重 8.11% (P <0 .0 5 ) ,9.6 0 % (P <0 .0 5 )和 9.6 0 % (P <0 .0 5 ) ,分别提高粗蛋白质表观利用率 9.13% (P <0 .0 5 ) ,6 .37% (P <0 .0 5 )和 7.36 %(P <0 .0 5 ) ,并且此三种酸均提高日粮钙、磷的表观利用率 (P <0 .0 5 ) ,而添加双乙酸钠对上述生产性能无明显影响。4种酸化剂对采食量、产蛋率和料蛋比均无显著影响 (P>0 .0 5 )。从添加效果总体看 ,柠檬酸是首选的蛋鸡日粮酸化剂。

This experiment compared the effects of 4 acidifiers, namely lactic acid(LA), citric acid(CA), phosphorus acid(PA), and sodium diacetate (SDA), on the production and metabolism in layer. The results showed that compared with group of control, LA, CA, and PA groups enhanced egg weight by 2.67%(P <0.05), 2.4%(P<0.05) and 1.57% , the apparent availability of protein by 9.13%(P<0.05), 6.37%(P<0.05)and 7.36%(P<0.05)respectively. LA, CA or PA additions enhanced the apparent availability of calcium and phosphorus (P<0.05), however, they had no significant effects on intake, egg production rate and feed efficiency. Unfortunately, there was not any effect of SAD on egg production and metabolism in layer in the experiment. It is suggested that for egg production CA is the first choice as acidifier.