Phosphorus digestibility and phytate degradation in pigs fed wheat-based diets with different intrinsic phytase activity and added microbial phytase

Klein, Nicolas; Papp, M.; Rosenfelder‐Kuon, Pia; Schroedter, Annika; Avenhaus, Ulrike; Rodehutscord, M.

doi:10.1080/1745039x.2021.1988814

Cited by 7 publications

(5 citation statements)

References 41 publications

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“…The calculated hindgut disappearance of P and Ca did not differ, and the values were close to zero, indicating no net absorption of these minerals in the hindgut. Although the release of P from InsP 6 in the hindgut was remarkable in diets without phytase, the released P was not absorbed, which is consistent with the results of previous studies ( Schlemmer et al, 2001 ; Rutherford et al, 2014 ; Mesina et al, 2019 ; Rosenfelder-Kuon et al, 2020 ; Klein et al, 2021 ).…”

Section: Discussionsupporting

confidence: 92%

“…The myo -inositol concentration was markedly increased by adding exogenous phytase in ileum digesta and blood plasma of pigs. A similar effect has been reported in previous studies on pigs and poultry ( Mesina et al, 2019 ; Lu et al, 2020 ; Klein et al, 2021 ; Novotny et al, 2023 ). Urinary myo -inositol excretion was also increased by phytase.…”

Section: Discussionsupporting

confidence: 90%

“…Samples were frozen immediately at −18 °C. On the last day of each period, a blood sample was obtained from each pig via venipuncture 4 h after the morning meal, as described by Klein et al (2021) .…”

Section: Methodsmentioning

confidence: 99%

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Effect of dietary calcium concentration and exogenous phytase on inositol phosphate degradation, mineral digestibility, and gut microbiota in growing pigs

Klein

Sarpong

Melzer

et al. 2023

Journal of Animal Science

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Variations in the dietary Ca concentration may affect inositol phosphate (InsP) degradation, and thereby, P digestibility in pigs. This study assessed the effects of dietary Ca concentration and exogenous phytase on InsP degradation, nutrient digestion and retention, blood metabolites, and microbiota composition in growing pigs with ileal cannulation. In a completely randomized row-column design with four periods, eight ileal-cannulated barrows (initial BW 27 kg) were fed four corn-soybean-and rapeseed meal-based diets containing 5.5 or 8.5 g Ca/kg DM, with or without 1,500 FTU of an exogenous hybrid-6-phytase/kg diet. No mineral P was added and the P concentration in the feed was 4.8 g P/kg DM. Prececal InsP6 disappearance in pigs fed diets containing exogenous phytase was lower (P = 0.022) with additional Ca than without. Concentrations of InsP2-4 isomers and myo-inositol in the distal ileal digesta and prececal P digestibility were greater (P < 0.001) with exogenous phytase than without exogenous phytase. In feces, InsP6 disappearance was lower (P < 0.002) and concentration of InsP5 and InsP4 isomers was higher (P ≤ 0.031) with additional Ca compared to without additional Ca. The prececal amino acid digestibility, energy digestibility, and hindgut disappearance of energy did not differ. The Shannon diversity index of the microbiota in the distal ileal digesta and feces was similar among the diets but was lower in the distal ileal digesta than in the feces (P < 0.001). Permutation analysis of variance revealed no dietary differences between the bacterial groups within the ileal digesta and fecal samples (P > 0.05). In conclusion, additional Ca reduced the effect of exogenous phytase on prececal InsP6 degradation. Endogenous InsP degradation was impaired by additional Ca only in the hindgut but the abundance of bacterial genera in feces was not affected.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 90%

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Effect of dietary calcium concentration and exogenous phytase on inositol phosphate degradation, mineral digestibility, and gut microbiota in growing pigs

Klein

Sarpong

Melzer

et al. 2023

Journal of Animal Science

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“…The latter authors demonstrated the additivity of P digestibility of individual components and suggested no effect of internal wheat phytase on SBM P digestibility. Similar studies on other cereal grains also found no correlation between intrinsic phytase activity and P digestibility values (Hovenjürgen et al, 2003;Schemmer et al, 2020;Klein et al, 2021). Nevertheless, the findings of Archs Toledo et al (2020) showed a positive effect of endogenous phytase of hybrid rye on P digestibility of maize grain-SBM rations.…”

Section: Phosphorus Digestibilitysupporting

confidence: 49%

“…Notably, phytate is primarily stored in other tissues, such as the aleurone layer of wheat and rye, soybean cotyledon or maize germ (Madsen and Brinch-Pedersen, 2020). Klein et al (2021) postulated that endogenous phytases might not be able to hydrolyse phytate from other sources in feed. However, grinding may increase the accessibility to softer parts such as the germ or endosperm.…”

Section: Phosphorus Digestibilitymentioning

confidence: 99%

Differences in phosphorus digestibility and metabolizable energy concentrations of rye- or wheat-based compound feeds in pigs

Schmitz,

Kehraus,

Südekum

2024

J. Anim. Feed Sci.

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Effects of increasing dose of a hybrid bacterial 6-phytase on apparent total tract nutrient digestibility, release of free myoinositol, and retention of calcium and phosphorus, and growth performance of pigs

Choi,

Sokale,

Frederick

et al. 2024

Animal Feed Science and Technology

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Phosphorus digestibility and phytate degradation in pigs fed wheat-based diets with different intrinsic phytase activity and added microbial phytase

Cited by 7 publications

References 41 publications

Effect of dietary calcium concentration and exogenous phytase on inositol phosphate degradation, mineral digestibility, and gut microbiota in growing pigs

Effect of dietary calcium concentration and exogenous phytase on inositol phosphate degradation, mineral digestibility, and gut microbiota in growing pigs

Differences in phosphorus digestibility and metabolizable energy concentrations of rye- or wheat-based compound feeds in pigs

Effects of increasing dose of a hybrid bacterial 6-phytase on apparent total tract nutrient digestibility, release of free myoinositol, and retention of calcium and phosphorus, and growth performance of pigs

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