In situ chelation of phosphorus using microencapsulated aluminum and iron sulfate to bind intestinal phosphorus in rainbow trout (Oncorhynchus mykiss)

Excess phosphorus (P) in freshwater ecosystems increases primary production which, left uncontrolled, may lead to eutrophication, accelerating the ageing process of receiving water bodies. To limit phosphorus release resulting from freshwater aquaculture, we propose to incorporate microencapsulated P-chelating agents into fish diets. In a first trial, alum (Al2SO4) and ferrous sulfate (FeSO4) were encapsulated by spray-chilling in a hydrogenated lipid matrix. Two practical diets incorporating one of these two chelating elements (6 g/kg) were fed to fish for five weeks (w), and P release from resulting feces was compared. In a second trial, a similar approach was used to evaluate the impact of increasing supplementation of encapsulated alum (3, 6, 15 g/kg of diet). Feces from the fish fed with the diets incorporating alum and ferrous sulfate released 62 % and 54 % respectively less P than feces from fish fed with control diets. The second experiment revealed a negative correlation between the level of encapsulated Al2SO4 included in the diet and phosphorus released by the feces (y = 0.18x2 ˗ 4.78x + 62.7; R2 = 0.93). Feces from feed incorporating Al2SO4 at 0, 3, 6 and 15 g/kg released 62 %, 52 %, 39 %, and 32 % of the total fecal P after 14 days respectively. Fish fed encapsulated Al2SO4 have similar growth performance and mineral status. Incorporation of encapsulated P-chelating agents into fish feed offers an opportunity to manage P release from fish feces. Long-term feeding studies are required for validation of dietary Al2SO4 and FeSO4 impacts on potential toxicity and growth/environmental performance following chronic feeding of encapulated P chelating agents

Valine

Database use for a meta-analysis:Sheet Answer_database: Data used for selection based on the response to valineSheet Requirement_database: Data used for selection based on valine requirementPublicationNb: specific code assigned to each publicationTrial: Experiment code used in the model as random effectSID: Standardized ileal digestibilit

Carbohydrases

These data are a database composed of internal studies performed in different research stations in the word that has been used to do a meta-analysis.Trial code : Each trials received a code that was not used in the statistical analysisExp: experiment code which has been used as a fixed effect in the statistical modeFCR: Feed Conversion RatioN : NitrogenDBWG, Daily Body Weight Gai

Valine

Database use for a meta-analysis:Sheet Answer_database: Data used for selection based on the response to valineSheet Requirement_database: Data used for selection based on valine requirementPublicationNb: specific code assigned to each publicationTrial: Experiment code used in the model as random effectSID: Standardized ileal digestibilityTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Carbohydrases

These data are a database composed of internal studies performed in different research stations in the word that has been used to do a meta-analysis.Trial code : Each trials received a code that was not used in the statistical analysisExp: experiment code which has been used as a fixed effect in the statistical modeFCR: Feed Conversion RatioN : NitrogenDBWG, Daily Body Weight GainTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Carbohydrases

These data are a database composed of internal studies performed in different research stations in the word that has been used to do a meta-analysis.Trial code : Each trials received a code that was not used in the statistical analysisExp: experiment code which has been used as a fixed effect in the statistical modeFCR: Feed Conversion RatioN : NitrogenDBWG, Daily Body Weight GainTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Valine

Database use for a meta-analysis:Sheet Answer_database: Data used for selection based on the response to valineSheet Requirement_database: Data used for selection based on valine requirementPublicationNb: specific code assigned to each publicationTrial: Experiment code used in the model as random effectSID: Standardized ileal digestibilityTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Modélisation de métabolisme phosphocalcique chez le porc et le poulet en croissance

PARIS-AgroParisTech Centre Paris (751052302) / SudocSudocFranceF

Valine

Database use for a meta-analysis:Sheet Answer_database: Data used for selection based on the response to valineSheet Requirement_database: Data used for selection based on valine requirementPublicationNb: specific code assigned to each publicationTrial: Experiment code used in the model as random effectSID: Standardized ileal digestibilityTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Valine

Database use for a meta-analysis:Sheet Answer_database: Data used for selection based on the response to valineSheet Requirement_database: Data used for selection based on valine requirementPublicationNb: specific code assigned to each publicationTrial: Experiment code used in the model as random effectSID: Standardized ileal digestibilityTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV