Mathis G F, Dale N M, Fuller A L
Georgia Poultry Research, Inc., Athens 30607, USA.
Poult Sci. 1995 May;74(5):800-4. doi: 10.3382/ps.0740800.
Six battery experiments determined the effect of feeding raw soybeans (RSB) in corn-soybean diets on coccidiosis in broiler chickens. The experimental design represents a 2 x 3 factorial arrangement of treatments with three dietary levels of incorporation of RSB (0, 50, and 100%), and chickens either infected or uninfected. The coccidial species tested singularly were Eimeria acervulina, Eimeria maxima, Eimeria necatrix, Eimeria brunetti, and Eimeria tenella. With all species of Eimeria a significant diet by infection interaction was demonstrated with a stepwise increase in weight gain and reduction in lesion scores with increasing levels of raw soybeans. To cause the pancreas to become hypertrophied and hyperfunctional, the 100% RSB diet was fed for an extended period. The experimental design represents a 2 x 3 factorial arrangement of treatments with three feeding regimens [Treatment A: 0% RSB (0 d to termination), Treatment B: (0% RSB: 0 to 12 d then 100% RSB 12 d to termination), and Treatment C: (100% 0 d to termination)] and chickens either infected (E. tenella) or uninfected. There was a significant difference for weight gain between uninfected and infected chicks of Treatments A and C but this difference was absent for Treatment B. Coccidiosis was not reduced by continuously feeding 100% RSB (Treatment C).
六项电池实验确定了在玉米 - 大豆日粮中添加生大豆（RSB）对肉鸡球虫病的影响。实验设计采用2×3析因处理安排，其中RSB的添加水平有三个日粮水平（0%、50%和100%），鸡分为感染组和未感染组。单独测试的球虫种类有堆型艾美耳球虫、巨型艾美耳球虫、毒害艾美耳球虫、布氏艾美耳球虫和柔嫩艾美耳球虫。对于所有艾美耳球虫种类，均证明了日粮与感染之间存在显著的交互作用，随着生大豆水平的增加，体重增加呈逐步上升趋势，病变评分降低。为使胰腺肥大和功能亢进，长期饲喂100%RSB日粮。实验设计采用2×3析因处理安排，有三种饲喂方案[处理A：0%RSB（从第0天至实验结束），处理B：（0%RSB：第0天至12天，然后100%RSB从第12天至实验结束），处理C：（100%RSB从第0天至实验结束）]，鸡分为感染组（柔嫩艾美耳球虫）和未感染组。处理A和C的未感染鸡和感染鸡之间体重增加存在显著差异，但处理B不存在这种差异。持续饲喂100%RSB（处理C）并不能降低球虫病的发生率。
