Results of an international phosphorus digestibility ring test with broiler chickens

M Rodehutscord; O Adeola; R Angel; P Bikker; E Delezie; WA Dozier III; M Umar Faruk; M Francesch; C Kwakernaak; A Narcy; CM Nyachoti; OA Olukosi; A Preynat; B Renouf; A Saiz del Barrio; K Schedle; W Siegert; S Steenfeldt; MM van Krimpen; SM Waititu; M Witzig

doi:10.3382/ps/pew426

Results of an international phosphorus digestibility ring test with broiler chickens

M Rodehutscord, O Adeola, R Angel, P Bikker, E Delezie, WA Dozier III, M Umar Faruk, M Francesch, C Kwakernaak, A Narcy, CM Nyachoti, OA Olukosi, A Preynat, B Renouf, A Saiz del Barrio, K Schedle, W Siegert, S Steenfeldt, MM van Krimpen, SM WaitituM Witzig

Monogastric Science Research

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Abstract

The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined.

Original language	English
Pages (from-to)	1679 - 1687
Number of pages	9
Journal	Poultry Science
Volume	96
Issue number	6
Early online date	5 Dec 2016
DOIs	https://doi.org/10.3382/ps/pew426
Publication status	First published - 5 Dec 2016

Bibliographical note

2072989

Keywords

Broiler chickens
Phosphorus
Phytate
Prececal digestibility
Variability

Access to Document

10.3382/ps/pew426

14464.pdfAccepted author manuscript, 426 KBLicence: CC BY-NC-ND

Cite this

Rodehutscord, M., Adeola, O., Angel, R., Bikker, P., Delezie, E., Dozier III, WA., Umar Faruk, M., Francesch, M., Kwakernaak, C., Narcy, A., Nyachoti, CM., Olukosi, OA., Preynat, A., Renouf, B., Saiz del Barrio, A., Schedle, K., Siegert, W., Steenfeldt, S., van Krimpen, MM., ... Witzig, M. (2016). Results of an international phosphorus digestibility ring test with broiler chickens. Poultry Science, 96(6), 1679 - 1687. Advance online publication. https://doi.org/10.3382/ps/pew426

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abstract = "The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined.",

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Rodehutscord, M, Adeola, O, Angel, R, Bikker, P, Delezie, E, Dozier III, WA, Umar Faruk, M, Francesch, M, Kwakernaak, C, Narcy, A, Nyachoti, CM, Olukosi, OA, Preynat, A, Renouf, B, Saiz del Barrio, A, Schedle, K, Siegert, W, Steenfeldt, S, van Krimpen, MM, Waititu, SM & Witzig, M 2016, 'Results of an international phosphorus digestibility ring test with broiler chickens', Poultry Science, vol. 96, no. 6, pp. 1679 - 1687. https://doi.org/10.3382/ps/pew426

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AU - Rodehutscord, M

AU - Adeola, O

AU - Angel, R

AU - Bikker, P

AU - Delezie, E

AU - Dozier III, WA

AU - Umar Faruk, M

AU - Francesch, M

AU - Kwakernaak, C

AU - Narcy, A

AU - Nyachoti, CM

AU - Olukosi, OA

AU - Preynat, A

AU - Renouf, B

AU - Saiz del Barrio, A

AU - Schedle, K

AU - Siegert, W

AU - Steenfeldt, S

AU - van Krimpen, MM

AU - Waititu, SM

AU - Witzig, M

N1 - 2072989

PY - 2016/12/5

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N2 - The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined.

AB - The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined.

KW - Broiler chickens

KW - Phosphorus

KW - Phytate

KW - Prececal digestibility

KW - Variability

U2 - 10.3382/ps/pew426

DO - 10.3382/ps/pew426

M3 - Article

SN - 0032-5791

VL - 96

SP - 1679

EP - 1687

JO - Poultry Science

JF - Poultry Science

IS - 6

ER -

Results of an international phosphorus digestibility ring test with broiler chickens

Abstract

Bibliographical note

Keywords

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