稻草和青草日粮条件下水牛唾液硫磷分泌量的变化

THE SULFUR AND PHOSPHORUS CONTENTS IN SALIVA OF WATER BUFFALO FED WITH FRESH GRASS AND RICE STRAW

用装有永久性瘤胃瘘管和临时性唾液收集器的４头水牛，在稻草日粮和青草日粮条件下，研究了唾液硫、磷分泌量与日粮中含量的关系。结果表明，在稻草日粮条件下，混合唾液分泌量、硫、磷含量以及２ｈ由唾液进入瘤胃的硫、磷总量都比青草期显著增加（Ｐ＜０．０５），但两期唾液ｐＨ未见有明显变化。提示在日粮硫、磷含量不足情况下，内源性硫、磷分泌增加。唾液硫、磷分泌量与日粮中含量大致呈相反趋势。

Four Haizi water buffaloes with temporary saliva collector were used to compare the S(sulfur) and P(phosphorus) secretion in mixed saliva. When the animal were fed with fresh grass (period 1) and rice straw (period 2), S and P concentrations in saliva were significantly higher in period 2 than those in period 1 ( P <0.05). The results showed that the S and P amounts in salivary secretion depend on their contents in diets.