Cargando…

Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals

Female turkeys (B.U.T. 6) and broilers (Ross 308) were compared at 6 wk of age to evaluate the effects of species, dietary P, Ca, and phytase levels on myo-inositol hexakisphosphate (InsP(6)) degradation along the digestive tract, gut mucosal phosphatase activity, P and Ca digestibility, and myo-ino...

Descripción completa

Detalles Bibliográficos
Autores principales: Novotny, Moritz, Sommerfeld, Vera, Krieg, Jochen, Kühn, Imke, Huber, Korinna, Rodehutscord, Markus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922952/
https://www.ncbi.nlm.nih.gov/pubmed/36716675
http://dx.doi.org/10.1016/j.psj.2023.102476
_version_ 1784887641713410048
author Novotny, Moritz
Sommerfeld, Vera
Krieg, Jochen
Kühn, Imke
Huber, Korinna
Rodehutscord, Markus
author_facet Novotny, Moritz
Sommerfeld, Vera
Krieg, Jochen
Kühn, Imke
Huber, Korinna
Rodehutscord, Markus
author_sort Novotny, Moritz
collection PubMed
description Female turkeys (B.U.T. 6) and broilers (Ross 308) were compared at 6 wk of age to evaluate the effects of species, dietary P, Ca, and phytase levels on myo-inositol hexakisphosphate (InsP(6)) degradation along the digestive tract, gut mucosal phosphatase activity, P and Ca digestibility, and myo-inositol concentrations in the digesta and blood. The environmental conditions and experimental corn-soybean meal-based diets were the same for both species. Four diets with either combination of 2 levels of P and Ca (CaP–: 4.0 g P/kg, 5.4 g Ca/kg and CaP+: 6.0 g P/kg, 8.0 g Ca/kg) and 2 levels of phytase supplementation (0 and 1,500 FTU/kg) were fed to the animals for 7 d at their sixth wk of age. Each diet was randomly assigned to 6 pens per species, with 10 birds each. After slaughter, blood, digesta from the crop, gizzard, duodenum, lower ileum, and jejunal mucosa were collected. Endogenous mucosal phosphatase activity in the jejunum was higher in turkeys than in broilers. Prececal InsP(6) disappearance was also higher in turkeys than in broilers when phytase was not supplemented. Phytase supplementation led to a higher prececal InsP(6) disappearance in broilers than in turkeys, likely due to different crop conditions such as moisture content. However, prececal P digestibility was higher in turkeys than broilers. Different relationships between myo-inositol concentration in the ileum digesta and blood were found, depending on the species. A comparison of the results with those obtained in 3-wk-old birds of a companion study showed that in diets with low Ca and P levels, prececal InsP(6) disappearance increased with age in turkeys, but not in broilers. This coincided with changes in the conditions of the digestive tract, such as the water content in the crop, gizzard pH, and mucosal phosphatase activity. In conclusion, occurrence of differences in phytate degradation between turkeys and broilers, fed the same feed, depended on age and can be explained by different physiological development of the digestive tract.
format Online
Article
Text
id pubmed-9922952
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-99229522023-02-14 Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals Novotny, Moritz Sommerfeld, Vera Krieg, Jochen Kühn, Imke Huber, Korinna Rodehutscord, Markus Poult Sci METABOLISM AND NUTRITION Female turkeys (B.U.T. 6) and broilers (Ross 308) were compared at 6 wk of age to evaluate the effects of species, dietary P, Ca, and phytase levels on myo-inositol hexakisphosphate (InsP(6)) degradation along the digestive tract, gut mucosal phosphatase activity, P and Ca digestibility, and myo-inositol concentrations in the digesta and blood. The environmental conditions and experimental corn-soybean meal-based diets were the same for both species. Four diets with either combination of 2 levels of P and Ca (CaP–: 4.0 g P/kg, 5.4 g Ca/kg and CaP+: 6.0 g P/kg, 8.0 g Ca/kg) and 2 levels of phytase supplementation (0 and 1,500 FTU/kg) were fed to the animals for 7 d at their sixth wk of age. Each diet was randomly assigned to 6 pens per species, with 10 birds each. After slaughter, blood, digesta from the crop, gizzard, duodenum, lower ileum, and jejunal mucosa were collected. Endogenous mucosal phosphatase activity in the jejunum was higher in turkeys than in broilers. Prececal InsP(6) disappearance was also higher in turkeys than in broilers when phytase was not supplemented. Phytase supplementation led to a higher prececal InsP(6) disappearance in broilers than in turkeys, likely due to different crop conditions such as moisture content. However, prececal P digestibility was higher in turkeys than broilers. Different relationships between myo-inositol concentration in the ileum digesta and blood were found, depending on the species. A comparison of the results with those obtained in 3-wk-old birds of a companion study showed that in diets with low Ca and P levels, prececal InsP(6) disappearance increased with age in turkeys, but not in broilers. This coincided with changes in the conditions of the digestive tract, such as the water content in the crop, gizzard pH, and mucosal phosphatase activity. In conclusion, occurrence of differences in phytate degradation between turkeys and broilers, fed the same feed, depended on age and can be explained by different physiological development of the digestive tract. Elsevier 2023-01-06 /pmc/articles/PMC9922952/ /pubmed/36716675 http://dx.doi.org/10.1016/j.psj.2023.102476 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle METABOLISM AND NUTRITION
Novotny, Moritz
Sommerfeld, Vera
Krieg, Jochen
Kühn, Imke
Huber, Korinna
Rodehutscord, Markus
Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title_full Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title_fullStr Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title_full_unstemmed Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title_short Mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
title_sort mucosal phosphatase activity, phytate degradation, and mineral digestibility in 6-week-old turkeys and broilers at different dietary levels of phosphorus and phytase and comparison with 3-week-old animals
topic METABOLISM AND NUTRITION
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922952/
https://www.ncbi.nlm.nih.gov/pubmed/36716675
http://dx.doi.org/10.1016/j.psj.2023.102476
work_keys_str_mv AT novotnymoritz mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals
AT sommerfeldvera mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals
AT kriegjochen mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals
AT kuhnimke mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals
AT huberkorinna mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals
AT rodehutscordmarkus mucosalphosphataseactivityphytatedegradationandmineraldigestibilityin6weekoldturkeysandbroilersatdifferentdietarylevelsofphosphorusandphytaseandcomparisonwith3weekoldanimals