Performance of Healthy and Eimeria acervulina-lnfected Chicks as Influenced by Anticoccidial Drugs and Source of Dietary Protein

Willis, Gawain M.; Baker, David H.

doi:10.3382/ps.0602284

Cited by 14 publications

(8 citation statements)

References 7 publications

(10 reference statements)

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“…Cervantes et al (1981) recently found that dietary potassium level accounted for differences in monensin toxicity between diets with or without large amounts of animal protein. In contrast, Willis and Baker (1981) observed no effect on growth rate from adding potassium to a 13% animal protein diet calculated to contain .73% potassium. In our study, the calculated potassium level of the diet decreased as protein level was reduced, because soybean meal contains more potassium than corn (2.02 vs. .45%, respectively; National Research Council [NRC], 1977).…”

Section: Discussionmentioning

confidence: 50%

Effect of Dietary Protein Level and Monensin on Performance of Chicks

Parsons

Baker

1982

Poultry Science

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Four experiments were conducted to investigate a possible interaction between dietary protein level and monensin on growth performance of young chicks. Crossbred chicks (New Hampshire X Columbian) or commercial broiler chicks (Hubbard X Hubbard) were fed corn-soybean meal diets containing various protein levels with or without added monensin (160 or 121 mg/kg). Monensin had little or no effect on growth performance of crossbred chicks fed diets containing 24 or 20% protein. However, growth performance of chicks fed 16% protein diets was depressed 15 and 8% by 160 and 121 mg/kg monensin, respectively. With commercial broiler chicks a marked interaction was observed between dietary protein level and monensin. As dietary protein level decreased, the depression in performance from monensin increased. At 24.0, 21.5, 19.0, and 16.5% protein, weight gains at 4 weeks of age were depressed 20, 29, 35, and 45% by 160 mg/kg monensin and 7, 14, 19, and 28% by 121 mg/kg monensin, respectively. Linear regression analysis indicated that 121 mg/kg monensin depressed growth rate an additional 2.7% for each 1% reduction in dietary protein level. A large portion of the growth depression from monensin could be explained by reduced feed intake. The results of this study indicate that level of dietary protein has a profound effect on the magnitude of growth depression caused by addition of monensin to chick diets. Thus, deficient levels of dietary protein should be avoided when using this anticoccidial drug in broiler feeds.

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Section: Discussionmentioning

confidence: 50%

Effect of Dietary Protein Level and Monensin on Performance of Chicks

Parsons

Baker

1982

Poultry Science

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“…When the high fish meal diet was supplemented with .3% potassium, the chicks' growth response to monensin was similar to that seen in the chicks fed a cornsoybean meal or a high fish meal ration without monensin. and K, and data reported by Willis and Baker (1981) indicated a counteraction by K of depression in gain/feed ratio observed with monensin. Early Rb and K interaction studies at Colorado State University (Sasser et al, 1969) showed that adding Rb to K-deficient diets significantly depressed chick growth and increased mortality.…”

Section: Introductionsupporting

confidence: 44%

Interaction of Monensin with Dietary Vanadium, Potassium, and Protein, and its Effect on Hepatic Rubidium and Potassium in Chicks

Cervantes

Jensen

1986

Poultry Science

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A series of experiments was undertaken to further investigate the influence of diet composition on chick response to monensin supplementation. Experiments were conducted to determine the effect of monensin on growth rate and hepatic Rb and K content as affected by dietary content of V, K, or protein. A factorial experiment involving V levels of 0, 5, 10, or 20 ppm and monensin levels of 0, 120, or 160 ppm was conducted with broiler chicks to 4 weeks of age. Growth rate was significantly depressed by 10 or 20 ppm V but not by monensin. Hepatic K content was not affected by dietary treatments. In another factorial experiment, effects of levels of 0 and 120 ppm monensin and 0 and 5 ppm V were compared. Growth rate was significantly depressed by both V and monensin but with no significant interaction. Neither hepatic Rb or K content was significantly altered by the supplements. A third factorial experiment involved monensin levels of 0, 120, or 160 ppm, added K levels of 0 or .3%, and dietary protein levels of 16 or 24%. Body weight at 3 weeks of age was significantly depressed by 160 ppm monensin in the high protein diet and by 120 or 160 ppm in the low protein diet. Added K did not counteract the growth depression. Hepatic Rb content was increased by monensin and significantly reduced by K supplementation. Hepatic K content was not increased by K supplementation. Chicks fed the low protein diet had significantly lower concentrations of hepatic Rb and K than those fed the high protein diet.

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“…Because females exhibit a higher feed intake per body weight gain, this would result in a higher milligram dose rate per body weight gain of anticoccidial and thus possibly exacerbate weight depression in the females. Several reports have concluded that ionophore medications can depress body weights through reduced feed intake (Morrison et al, 1979;Patel et al, 1980;Willis and Baker, 1981), but other studies have found no effect (Frigg and Broz, 1983;Gard et al, 1975). These contradictory findings may be partially atrributable to differing levels of medication.…”

Section: Discussionmentioning

confidence: 95%

“…1980), although this latter interaction has been demonstrated to be of little practical significance (Willis and Baker, 1980). More recently, Willis and Baker (1981) were unable to detect interactions between monensin or lasalocid with source of dietary protein. Reports have also surfaced from the commercial broiler industry of wet pen litter with the feeding of lasalocid (Ward and Brewer, 1981) possibly due to the ionophores influence upon acid-base relationships and proper osmotic balance.…”

Section: Introductionmentioning

confidence: 92%

Effects of Coccidiostats and Dietary Protein on Performance and Water Consumption in Broiler Chickens

et al. 1985

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Two, 7-week floor pen experiments were conducted consecutively with male broilers and then female broilers to determine the effects of feeding salinomycin (60 ppm), monensin (99 ppm), or lasalocid (125 ppm) at the following three levels of dietary protein: 1) that which meets National Research Council specifications (NRC, 1977), 2) that level deficient in sulfur amino acids (SAA), or 3) that deficient in protein. Group body weights, feed intake, and water consumption were noted at 28 and 49 days of age with feed efficiency and overall mortalities determined. Reducing SAA resulted in depressed (P less than .05) body weights at 7 weeks in both experiments, whereas deficient protein reduced (P less than .05) growth, feed efficiency, and water consumption. Generally, inclusion of coccidiostats in the diet did not significantly hinder growth or feed efficiency. Feeding of coccidiostats in combination with the low protein diet did not produce additional anorexigenic effects. Although a significant lasalocid SAA-sparing effect was not observed, diet X coccidiostat interactions (P less than .05) were apparent and attributable to an apparent "protein-sparing" effect upon body weight gain when salinomycin was fed in combination with the low protein diet. Lasalocid increased water consumption (P less than .05) relative to monensin in the female broilers.

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Performance of Healthy and Eimeria acervulina-lnfected Chicks as Influenced by Anticoccidial Drugs and Source of Dietary Protein

Cited by 14 publications

References 7 publications

Effect of Dietary Protein Level and Monensin on Performance of Chicks

Effect of Dietary Protein Level and Monensin on Performance of Chicks

Interaction of Monensin with Dietary Vanadium, Potassium, and Protein, and its Effect on Hepatic Rubidium and Potassium in Chicks

Effects of Coccidiostats and Dietary Protein on Performance and Water Consumption in Broiler Chickens

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