肉兔日粮中添加硫酸钠对营养物质利用率的影响

The Effects of Sodlum SulfateSupplernentatlon to D iet of Meat一Rabbits on Nutrient Availability

选择４５日龄太行山兔１００只，研究在含硫氨基酸水平不同的日粮中添加硫酸钠对营养物质利用率的影响。结果在含硫氨基酸达到需要量８０％～９６％的日粮中添加０．２％～０．４％的硫酸钠，能明显提高氮的利用率，同时对提高干物质和有机物质的消化率也有作用，但未达显著水平（Ｐ＞０．０５）。其中以含硫氨基酸为需要量的９６％时添加０．２％硫酸钠效果最佳。摄入氮和可消化氮的沉积率分别提高１９．８０％和１８．７９％（Ｐ＜０．０１）。结果表明：在含硫氨基酸不足的ａ粮中添加适量的硫酸钠，可以提高氮及其它营养物质的利用率，从而促进生长。

hedfect of adding sodiu m suuate to thediets with diHerence levels of suHur一amino acidson the nutrients availability were studied with 1 00 Taihang Mountain rabbits at the age of 45一day old.The resuItes showed that significant increases in sedlment rate of N were obtained from0.2%～0.4%sodium sulfate added to basal diet meeting80%～96%of the requriement.Thedigestibility of dry material and organic material were all influenced,but the difference were notsignificant(P>0. 05).The best result was obtained when 0.2%sodium sulfate was added to thebasal diet meeting 96%of sulfur一amino acids requirement.Sediment rate of absorbed N and di-gestibIe N increased by 19. 80%and 18.79%(P<0.01).