Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality

Bavaresco, Caroline; Krabbe, Everton Luís; Ávila, V. S. de; Lopes, L. dos S.; Wernick, Bruno; Martinez, Fernando N.

doi:10.1016/j.japr.2020.03.005

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…In contrast, the digestibility of Ca was relatively unaffected, which could be explained by a high dietary Ca content. Recent data are indicative that Ca:P ratios are critical for these kinds of results (Bavaresco et al, 2020a).…”

Section: Resultsmentioning

confidence: 99%

Dietary hybrid phytase and carbohydrases on nutrient digestibility and bone quality of broiler chickens

Bavaresco

Krabbe

Surek

et al. 2021

Pesq. agropec. bras.

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The objective of this work was to evaluate the effect of the use of hybrid phytase, alone or combined with carbohydrases, in poultry diets with nutritional reductions of calcium, available phosphorus, and metabolizable energy on the nutrient digestibility and bone quality of broiler chickens. A total of 1,875 broilers were distributed in five treatments in a completely randomized design, with 15 replicates of 25 chickens each. The treatments consisted of a positive control feed (T1) and of four negative controls (T2 to T5): T1, basal diet (BD) with corn and soybean; T2 and T3, BDs with reductions of 70 and 100 kcal kg-1 metabolizable energy, respectively, and both with reductions of 0.16% Ca and 0.15% available P; and T4 and T5, BDs with the same nutritional reductions, but supplemented with enzymes, i.e., T4 = T2 + 500 phytase units (FTU) per kilogram and T5 = T3 + 500 FTU kg-1 + 560 xylanase units (TXU) per kilogram + 250 glucanase units (TGU) per kilogram. The use of 500 FTU kg-1 hybrid phytase in pelleted corn-soybean meal diets allows a good digestive performance by broilers and replaces the nitrogen-corrected apparent metabolizable energy at 70 kcal kg-1, as well as 0.16% Ca and 0.15% available P.

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Section: Resultsmentioning

confidence: 99%

Dietary hybrid phytase and carbohydrases on nutrient digestibility and bone quality of broiler chickens

Bavaresco

Krabbe

Surek

et al. 2021

Pesq. agropec. bras.

Self Cite

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show abstract

“…The present study recorded decreased CP, aP, and Ca levels in the analyzed animals; these nutrients play essential role in several metabolic functions in their body. Phosphorus and calcium are essential minerals involved in several metabolic processes such as skeletal development, energy transfer, enzyme activation, and basic acid balance, among others (Jlali et al, 2020;Bavaresco et al, 2020). Protein reduction can lead to higher body fat deposition (Chrystal et al, 2020) and result in worsened weight gain and poor feed conversion.…”

Section: Discussionmentioning

confidence: 99%

Effect of phytase and protease combination on performance, metabolizable energy, and amino acid digestibility of broilers fed nutrient-restricted diets

Bernardes¹,

Oliveira²,

Calderano³

et al. 2022

Revista Brasileira De Zootecnia

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Three experiments were carried out to evaluate the effect of dietary combination of different enzymes (phytase + protease) on performance, metabolizable energy, and amino acid digestibility of broiler chickens fed diets with nutritional reduction. A total of 1,400, 336, and 384 male chickens were distributed in a completely randomized design, in the experiments of performance, metabolism, and digestibility, respectively. Treatments were divided as follows: positive control (PC), negative control -NC1 (PC minus 0.16% Ca, 0.15% available P (aP), and 0.5% crude protein (CP)), NC2 (PC minus 0.16% Ca, 0.15% aP, and 1% CP), NC1 added with phytase deriving from citrobacter and protease deriving from Bacillus licheniformis (CBE), NC1 added with phytase deriving from E. coli and protease deriving from microbial fermentation (SE), NC2 added with CBE, and NC2 added with SE. A protein-free diet was included in the digestibility experiment. The nutritional restriction did not affect feed intake of birds in the first experiment; however, the restriction inhibited body weight gain and feed conversion ratio in all phases. In experiment 2, the nutritional restriction decreased AME and AMEn values, although the addition of phytase and protease in diets improved both parameters, mainly in NC2. Treatment NC2 impaired the standardized digestibility of total essential amino acids of animals subjected to experiment 3, although the addition of enzymes helped to recover the digestibility to levels similar to PC. Supplementation of phytase in association with protease is effective to improve performance, energy metabolism, and standardized amino acid digestibility of broilers fed diets with nutrient restriction.

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Interactive effects of calcium, vitamin D3, and exogenous phytase on phosphorus utilization in male broiler chickens from 1 to 21 days post-hatch: A meta-analysis approach

Faridi

Shahir

Baradaran

2023

Animal Feed Science and Technology

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Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality

Cited by 6 publications

References 22 publications

Dietary hybrid phytase and carbohydrases on nutrient digestibility and bone quality of broiler chickens

Dietary hybrid phytase and carbohydrases on nutrient digestibility and bone quality of broiler chickens

Effect of phytase and protease combination on performance, metabolizable energy, and amino acid digestibility of broilers fed nutrient-restricted diets

Interactive effects of calcium, vitamin D3, and exogenous phytase on phosphorus utilization in male broiler chickens from 1 to 21 days post-hatch: A meta-analysis approach

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