新型的饲料添加剂水合铝硅酸钠钙的研究进展

水合铝硅酸钠钙（HSCAS）是从天然沸石中获取的一种具有吸附性的化合物,近年研究发现,HSCAS对黄曲霉毒素有很高亲和力,添加到动物饲料中可保护性地防止动物毒素中毒。本文着重对HSCAS的理化特性、在对抗黄曲霉毒素方面的主要机制、在不同动物（雏鸡、母牛、山羊、羔羊、水貂和猪）中的应用以及 HSCAS的应用前景作一综述。

Adsorption of sodium polyacrylate at interface of dicalcium silicate-sodium aluminate solution

The adsorption isotherm of sodium polyacrylate on dicalcium silicate（2CaO-SiO2） in sodium aluminate solution at 80 ℃ was studied.The type of surface adsorption of sodium polyacrylate is saturated adsorption,and the adsorption behavior belongs to L-type,according with the monolayer adsorption model of Langmuir equation.The surface coverage of sodium polyacrylate is 1.06 mol/μm2.The relation curve between the surface pressure and the molecular area of adsorption film was obtained by Gibbs formula.The variation of interfacial energy caused by adsorption as well as the relationship between the relation curve and the type of adsorption was discussed.

去除真菌毒素

温暖、潮温的贮藏环境有利于谷物霉菌生长繁殖,其中有些霉菌会产生有损猪的生长和繁殖性能的真菌毒素玉米赤霉烯酮和脱氧瓜萎镰菌烯醇。饲料生产商可通过测试饲料原料并选用合适的贮藏技术来减少真菌毒素问题。至今,尚无破坏或去除饲料或原料中的真菌毒素的商用方法。 密西根州立大学K.A.Howard及其同事研究了水合铝硅酸钠钙(HSCAS)结合、钝化猪饲料中的真菌毒素的可能性(密西根州立大学养猪研究报告,1990年,P.18)