animal manure短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 牲畜粪,动物性杂肥 Dietary supplementation of manganese in pig, broiler, duck and fish improves animal performance and feed conversion efficiency, and reduce animal manure pollution problem. 应用于猪、鸡、鸭和水产动物日粮，可提高饲料的利用效率，减少养殖业环境污染。 cnki