ArticlePoultry science2025
A novel consensus bacterial 6-phytase variant supplemented to an all-vegetable broiler diet totally replaced added trace minerals including zinc, iron, copper and manganese in two experiments.
Article in Poultry science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A review of the iron requirements and its determination in commercial poultry.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Review
- The Evaluation of Zinc Source and Dose in Broiler Diets Fed at Different Calcium and Phosphorus Levels in the Presence or Absence of Phytase.Animals : an open access journal from MDPI · 2026Article
- Replacement of added trace minerals (zinc, copper, iron, and manganese) by a consensus bacterial 6-phytase variant in weaned pigs fed an all-vegetable diet.Journal of animal science · 2026Article
- Considering the concept of nutritional modification coupled with phytase supplementation for reducingFrontiers in veterinary science · 2025Article
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Authors and funding
4 authors.
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Abstract
Two experiments tested the effect of a bacterial 6-phytase (PhyG) supplemented to a vegetable broiler diet without or with added trace minerals (TM), on growth performance and TM utilization. Each tested 12 treatments in a 2 × 6 factorial arrangement with 3,360 Ross 308 males (35 birds/pen, 8 pens/treatment) in a randomized complete block design. Phytase levels comprised no PhyG or PhyG at 2,000, 1,500 and 1,000 FTU/kg during 0 to 10, 10 to 20 and (Experiment 2) 20 to 35 d of age, respectively; TM diets comprised: no added TM (diet 1); 10, 15, 3 and 10, or 20, 30, 6 and 20 mg/kg of Zn, Fe, Cu and Mn as sulphate (diets 2 and 3); 15, 3 and 10 mg/kg of Zn, Cu and Mn as oxide and 15 mg/kg Fe as sulphate, or 30, 6 and 20 mg/kg of Zn, Cu and Mn as oxide and 30 mg/kg Fe as sulphate (diets 4 and 5), and; 10, 3, 15 and 10 mg/kg of organic Zn, Cu, Fe and Mn (diet 6). Apart from no added TM, basal diets were nutritionally adequate; phytase-supplemented diets were reduced in Ca and retainable P. All diets were pelleted and fed ad libitum. In both experiments during all phases there were interactions (P < 0.05) between phytase and TM on BW, BW gain (BWG), feed intake (FI), FCR (experiment 2 only) and tibia Zn. Without phytase, TM improved (P < 0.05) these measures. Phytase without TM increased (P < 0.05) d 35 BW, overall BWG and FI, equivalent to or beyond the level achieved by TM without phytase. Tibia Zn at d 10 and 20 in Experiment 2 was increased by phytase beyond the level achieved by TM without phytase (P < 0.05). Phytase also increased (P < 0.05) liver Zn, Fe, and Mn at d 10 and 20 and plasma Zn at d 20 d. There was no consistent effect of TM source or dose on bird responses. In conclusion, PhyG phytase replaced the effect of added TM on performance during 0 to 35 d of age and could support a reduction in commercial dose levels of added TM in all-vegetable broiler diets.
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