Article Dans Une Revue UTTAR PRADESH JOURNAL OF ZOOLOGY Année : 2025

Effect of Dietary Microbial Phytase Supplementation on the Performance, Bone Status and Nutrient Retention of Broilers Fed with Inorganic Phosphate-Free Diet

Résumé

A study was conducted to evaluate the efficacy of microbial phytase supplementation in broiler chickens fed an inorganic phosphate-free diet and its impact on growth, bone mineralization, nutrient retention, and economic efficiency. Six-week feeding trial was conducted with 300 straight-run, day-old commercial broiler chicks of the Cobb-430Y strain. The chicks were randomly divided into five treatment groups: A, B, C, D, and E, with three replicates of each. Group A was the Positive Control, fed as per nutrient requirements of strain in broiler prestarter (BPS), broiler starter (BS), and broiler finisher (BF). Group B was the Negative Control (NC), with reduced levels of calcium (0.60%, 0.58%, and 0.58%) and Total Phosphorus (TP) (0.42%, 0.43%, and 0.37%) in the BPS, BS, and BF phases, respectively. Groups C, D, and E were offered the NC diet with supplementation of microbial phytase (Natuphos® E 10000 FTU/g) at 1000, 1000, and 1000 FTU for group C, 2000, 2000, and 1500 FTU for group D, and 3000, 3000, and 2000 FTU/kg for group E, respectively, in BPS, BS and BF diets. The overall study revealed that microbial phytase supplementation at 2000, in BPS, BS, and 1500 FTU/kg BF diet with low Ca and TP significantly (P≤0.05) improved body weight, body weight gain, feed consumption, and reduced feed conversion ratio, equivalent to the PC. Tibia mineralization (ash, Ca, and P), however, tibia breaking strength was unaffected. Moreover, the retention of nutrients such as Ca and P significantly (P≤0.05) improved with microbial phytase supplementation compared to NC. It can be concluded that the addition of microbial phytase (2000, 2000, 1500 FTU/kg) to a low-Ca and inorganic phosphate-free diet significantly enhanced growth performance, tibia mineralization, nutrient retention and found to be cost-effective.

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Dates et versions

hal-05268517 , version 1 (19-09-2025)

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  • HAL Id : hal-05268517 , version 1

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Pakalwar V.D., Kadam A.S., Lonkar V.D., Jadhav S.N., Mote C.S., et al.. Effect of Dietary Microbial Phytase Supplementation on the Performance, Bone Status and Nutrient Retention of Broilers Fed with Inorganic Phosphate-Free Diet. UTTAR PRADESH JOURNAL OF ZOOLOGY, 2025, 46 (17), pp.301-310. ⟨hal-05268517⟩
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