Waldroup P W, Hellwig H M, Johnson Z B, Krueger W F, Moore R W, Charles O W, Duke S, Primo R A, Trammell J H, Fell R V
Department of Animal Sciences, University of Arkansas, Fayetteville 72701.
Poult Sci. 1988 Jan;67(1):103-7. doi: 10.3382/ps.0670103.
Six trials were conducted at different locations to examine the response of broiler chickens to roxarsone and bacitracin in the form of bacitracin methylene disalicylate (BMD) in the presence of the anticoccidal narasin. All diets contained narasin (80 mg/kg) and were fortified with a factorial arrangement of roxarsone (0 to 50 mg/kg) and BMD (0 or 55 mg/kg). Broilers were grown to market weights with narasin and roxarsone removed from the diets for the final 5 days. Addition of both roxarsone and BMD resulted in significant (P less than .05) improvements in body weight and feed utilization. Response to roxarsone for feed utilization was influenced to some extent by the presence or absence of BMD. Although the response to roxarsone was always positive, the degree of response was lessened by the presence of BMD. This resulted in a significant (P less than .10) interaction between roxarsone and BMD for feed utilization but not for body weight.
在不同地点进行了六项试验，以研究在抗球虫药甲基盐霉素存在的情况下，肉鸡对洛克沙胂和以亚甲基二水杨酸杆菌肽（BMD）形式存在的杆菌肽的反应。所有日粮均含有甲基盐霉素（80毫克/千克），并通过洛克沙胂（0至50毫克/千克）和BMD（0或55毫克/千克）的析因安排进行强化。肉鸡饲养至上市体重，在最后5天从日粮中去除甲基盐霉素和洛克沙胂。添加洛克沙胂和BMD均显著（P小于0.05）提高了体重和饲料利用率。BMD的存在与否在一定程度上影响了洛克沙胂对饲料利用率的反应。尽管对洛克沙胂的反应始终是积极的，但BMD的存在降低了反应程度。这导致洛克沙胂和BMD在饲料利用率方面存在显著（P小于0.10）的交互作用，但在体重方面不存在交互作用。
