枯草芽孢杆菌及其发酵豆粕对蛋鸡肠道菌群和粪便中N、S含量的影响
고초아포간균급기발효두박대단계장도균군화분편중N、S함량적영향
Effects of Bacillus subtilis and Fermented Soybean Meal on Intestinal Micorflora,Fecal Nitrogen and Sulfur Content in Layers
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