Study of the interaction between dietary cation-anion balance and microbial phytase on performance, carcass characteristics and immune response of broiler chickens

Document Type : Research Paper

Author

Assistant professor of Animal Nutrition, Department of Animal Science, Shabestar Branch, Islamic Azad University

Abstract

This experiment was carried out using 1200 male Ross broiler chicks to evaluate the interaction effects between dietary cation-anion balance and microbial phytase on performance, carcass characteristics and immune response. The chicks were assigned of the dietery tretements with a 4×3 factorial arrangement in completely randomized design with four levels of dietary cation-anion balance (200, 225, 250 and 275 mEq/kg of diet) and three levels of microbial phytase (0, 500 and 750 phytase units/kg of diets). Results showed that the dietary cation-anion balance and microbial phytase interaction was significant (P < 0.05) for performance traits (feed intake, feed conversion ratio, body weight gain, production index and body weight of broilers on 42 day of age).The interaction between cation-anion balance and phytase was not significant (P > 0.05) for carcass characteristics (carcass, thighs, breast, back + neck, liver, heart, spleen, gizzard, borsa and abdominal fat weights, and also intestine weight and length of the broiler chickens). The dietary cation-anion balance × microbial phytase interaction was significant (P < 0.05) for immune system of broilers at 24 and 34 d of age. Overall, results of the present study indicated that variability in phytase respons in performance and immune system of broiler chickens may be affected, in part, by differences in dietary electrolyte levels.

Keywords

References

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Animal Production Research
Volume 5, Issue 2
September 2016
Pages 13-24

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