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Wheat Phosphorus Availability: 2— In Vivo Study in Broilers and Pigs; Relationship with Endogenous Phytasic Activity and Phytic Phosphorus Content in Wheat
Author(s) -
BarrierGuillot Bruno,
Casado Paula,
Maupetit Pierre,
Jondreville Catherine,
Gatel François,
Larbier Michel
Publication year - 1996
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199601)70:1<69::aid-jsfa466>3.0.co;2-c
Subject(s) - phosphorus , phytic acid , phytase , zoology , agronomy , chemistry , manure , biology , food science , organic chemistry
In order to reduce the P concentration in manure, P availability in different plant feedstuffs should be determined. Wheat P availability has been studied by the digestive balance technique on broilers and pigs. Nineteen wheat samples were tested on broilers, giving a mean P retention of 57% (45–70%). P retention was observed to be linearly associated with the endogenous phytasic activity in wheats ( r =0·58; P< 0·05). This variability in P retention cannot be satisfactorily explained by the phytic P content of wheat. Four wheat samples were tested on pigs, giving a mean apparent P digestibility of 40%.