Combined Evaluation of Three Broiler Trials Testing The Effects of Roxarsone and Zinc Bacitracin In The Presence of Aklomide

Abstract

Broilers were grown to eight weeks of age at three experiment station locations to evaluate the influence of roxarsone and zinc bacitracin in the presence of aklomide. Dietary treatments consisted of a 4 x 4 factorial design in which levels of 0, 25, 50 or 75 p.p.m. of roxarsone were fed with 0, 15, 30 or 60 g./ton of zinc bacitracin. All treatment groups received 0.025% aklomide.Eight-week data indicated that zinc bacitracin alone produced no growth or feed efficiency response at any level of supplementation. Birds receiving roxarsone had significantly higher body weights at eight weeks of age than did birds receiving the control diet. The three levels of roxarsone produced statistically equivalent body weights.A level of 75 p.p.m. roxarsone in the presence of aklomide provided a significant improvement in feed efficiency over that seen for birds receiving either 50 p.p.m. of roxarsone or the unsupplemented control diet. Statistical evaluations indicated that the inclusion of roxarsone and zinc bacitracin in the presence of aklomide did not produce any body weight or feed efficiency interaction. The rate of mortality was not significantly influenced by any of the dietary treatments.

Response of Broiler Chickens to Addition of Bacitracin Methylene Disalicylate and Roxarsone to Diets Containing Halofuginone

“…(1973) and Waldroup et al (1986a,b) as the addition of 55 mg BMD to the diet of broiler chickens improved both body weight gains and feed utilization. In contrast to the studies of Damron et al (1975), 50 mg of roxarsone improved growth only when added to diets that contained BMD. However, the addition of roxarsone improved utilization of feed both in the presence or absence of BMD.…”

“…These effects were independent, with no interaction between roxarsone and BMD. Damron et al (1975) reported that roxarsone improved both weight gain and feed utilization by broiler chickens, regardless of the level of zinc bacitracin in the diet. However, Fernandez et al (1973) reported a beneficial additive effect between zinc bacitracin and roxarsone.…”

The Response of Broiler Chickens to the Addition of Bacitracin Methylene Disalicylate to Diets Containing Salinomycin and Roxarsone

“…Some commonly used additives that improve growth rate or improve utilization of broiler feeds include bacitracin, in the form of either zinc bacitracin or bacitracin methylene disalicylate (Bird, 1968;Coates and Harrision, 1969;Creek and Schumaier, I960;Damron et al, 1975;Fernandez et al, 1973;Heuser and Norris, 1952;Matterson and Singsen, 1951;Stutz et al, 1983), and 3-nitro-4-hydroxyphenylarsonic acid [roxarsone (Abbott et al, 1954;Bird et al, 1949;Carlson et al, 1954;Frost, 1953;Libby et al, 1955;Milligan et al, 1955;Morehouse, 1949;Morehouse and Mayfield, 1946;Waldroup et al, 1984;West, 1956;Wharton and Fritz, 1953)]. Damron et al (1975) reported that there was no interaction between zinc bacitracin and roxarsone in regard to body weight gains or feed utilization by broilers. However, Fernandez et al (1973) reported that there was evidence of a beneficial additive effect between the two compounds.…”

The Effect of Zinc Bacitracin and Roxarsone on Performance of Broiler Chickens When Fed in Combination With Narasin

“…Waldroup et al (1986a) also observed significant improvements in BW gains and feed utilization when roxarsone was fed in the presence of narasin. Damron et al (1975) reported that roxarsone supplementation improved both growth rate and feed efficiency of broilers regardless of the level of zinc bacitracin in the diet; zinc bacitracin alone, or in combination with roxarsone, did not affect growth rate or feed utilization of broilers. However, Fernandez et al (1973) reported a beneficial, additive effect of roxarsone and zinc bacitracin.…”