缓释氢氧化钙和缓释盐酸对家兔营养物质消化吸收的影响

Influences of Sustained-Release Calcium Hydroxide and Sustained-Release Hydrochloric Acid on Nutrient Digestion and Absorption in Rabbits

本试验选用体重为（2.0±0.5）kg的家兔为试验动物,分别采用缓释氢氧化钙和缓释盐酸调节家兔的消化吸收,测定其对营养物质消化吸收的影响。结果表明：缓释氢氧化钙能促进营养物质特别是钙和粗蛋白质的消化吸收,其消化率分别从41.0%和65.2%增加到89.8%和93.8%;缓释盐酸对营养物质特别是钙和粗蛋白质的消化吸收不利,其消化率分别从55.5%和84.9%下降为28.4%和68.7%;此外,缓释氢氧化钙的促进消化吸收效果可维持3-4 d。由此可知,缓释氢氧化钙对钙以及蛋白质的消化吸收具有促进作用,而脂肪的消化吸收无论状态如何都具有良好的效果,因此增加脂肪的摄入容易产生营养过剩。然而,服用缓释盐酸会降低营养物质的消化吸收效果。

To understand the influences of sustained-release calcium hydroxide and sustained-release hydrochloric acid on nutrient digestion and absorption,this article choose rabbits with the body weight of（2.0 ＋ 0.5） kg as the test subject,and used sustained-release calcium hydroxide and sustained-release hydrochloric acid to affect the digestion and absorption of rabbits,respectively.The results showed that sustained-release calcium hydroxide can promote digestion and absorption of nutrients,especially calcium and protein.The digestibility of calcium and crude protein was increased from 89.8%and 93.8%to 41.0%and 65.2%,respectively.The sustained-release hydrochloric acid did not favor the digestion and absorption of nutrients,especially calcium and protein.The digestibility of calcium and crude protein was decreased from 55.5%and 84.9%to 28.4%and68.7%,respectively.The promoting effects of sustained-release hydrochloride on digestion could last for 3 to 4days.Therefore,the sustained-release calcium hydroxide has a promotion effect on the rabbit＇ s digestion and absorption for calcium and protein,while the digestion and absorption for fat remains at a high level no matter what the condition is.Consequently,increasing the intake of fat will cause over nutrition.However,taking sustained-release hydrochloric acid will reduce nutrient digestion and absorption.