TY - JOUR
T1 - Post-prandial changes in plasma mineral levels in rainbow trout fed a complete plant ingredient based diet and the effect of supplemental di-calcium phosphate
AU - Antony Jesu Prabhu, P.
AU - Schrama, J.W.
AU - Mariojouls, C.
AU - Godin, S.
AU - Fontagné-Dicharry, S.
AU - Geurden, I.
AU - Surget, A.
AU - Bouyssiere, B.
AU - Kaushik, S.J.
PY - 2014
Y1 - 2014
N2 - Post-prandial changes in plasma mineral levels and utilisation of minerals in rainbow trout fed complete plant ingredient based diets with or without supplemental di-calcium phosphate (DCP) were studied over an 8 week period. Three diets were used: diet M was FM and fish oil (FO) based diet (control); diets VP0 and VP + (V diets) were completely based on plant derived protein and lipid sources. One of the V diets (VP +) was supplemented with DCP to supply 5 g kg- 1 dry matter available phosphorus (P); while the other diet (VP0) was not supplemented with DCP. Change in dietary protein source significantly affected the post-prandial pattern in plasma levels of P (p <0.05), Ca (p <0.007), Mg (p <0.001) and Zn (p <0.03). Area under the curve analysis indicated that compared to VP0, DCP supplementation in VP + improved plasma levels of P (p <0.01) and K (p <0.05); Cu (p <0.002), Se (p <0.009) and Zn (p <0.001) levels were reduced while Ca, Mg and Fe levels were unaffected (p > 0.05). Based on measurement of apparent digestibility, growth and whole body composition analyses, mineral balances were established showing that supplementation of DCP led to significant increase in whole body P concentration and P retention in VP +, comparable to fish fed diet M with significantly (p <0.05) reduced faecal and non-faecal P losses. There was improved post-absorptive retention (as % of available intake) of Ca (p <0.05), Mg (p <0.05) and K (p <0.05) in VP + compared to VP0. Utilisation of Cu (p <0.05) and Zn (p <0.01) was negatively affected. DCP supplementation to complete plant ingredient based diet increased the post-prandial plasma levels, whole body concentration and utilisation of macro-minerals (P, Ca, Mg and K) whereas that of micro-minerals especially Zn and Cu were negatively affected.
AB - Post-prandial changes in plasma mineral levels and utilisation of minerals in rainbow trout fed complete plant ingredient based diets with or without supplemental di-calcium phosphate (DCP) were studied over an 8 week period. Three diets were used: diet M was FM and fish oil (FO) based diet (control); diets VP0 and VP + (V diets) were completely based on plant derived protein and lipid sources. One of the V diets (VP +) was supplemented with DCP to supply 5 g kg- 1 dry matter available phosphorus (P); while the other diet (VP0) was not supplemented with DCP. Change in dietary protein source significantly affected the post-prandial pattern in plasma levels of P (p <0.05), Ca (p <0.007), Mg (p <0.001) and Zn (p <0.03). Area under the curve analysis indicated that compared to VP0, DCP supplementation in VP + improved plasma levels of P (p <0.01) and K (p <0.05); Cu (p <0.002), Se (p <0.009) and Zn (p <0.001) levels were reduced while Ca, Mg and Fe levels were unaffected (p > 0.05). Based on measurement of apparent digestibility, growth and whole body composition analyses, mineral balances were established showing that supplementation of DCP led to significant increase in whole body P concentration and P retention in VP +, comparable to fish fed diet M with significantly (p <0.05) reduced faecal and non-faecal P losses. There was improved post-absorptive retention (as % of available intake) of Ca (p <0.05), Mg (p <0.05) and K (p <0.05) in VP + compared to VP0. Utilisation of Cu (p <0.05) and Zn (p <0.01) was negatively affected. DCP supplementation to complete plant ingredient based diet increased the post-prandial plasma levels, whole body concentration and utilisation of macro-minerals (P, Ca, Mg and K) whereas that of micro-minerals especially Zn and Cu were negatively affected.
KW - salmon salmo-salar
KW - fecal phosphorus excretion
KW - european sea-bass
KW - low fish-meal
KW - oncorhynchus-mykiss
KW - atlantic salmon
KW - fresh-water
KW - channel catfish
KW - dicentrarchus-labrax
KW - tricalcium phosphate
U2 - 10.1016/j.aquaculture.2014.03.038
DO - 10.1016/j.aquaculture.2014.03.038
M3 - Article
SN - 0044-8486
VL - 430
SP - 34
EP - 43
JO - Aquaculture
JF - Aquaculture
ER -