in vitro binding capacity of organic and inorganic sources for minerals

نویسندگان

علی قدرت

دانشجوی دکتری، گروه علوم دامی، دانشگاه آزاد اسلامی واحد شبستر، شبستر، ایران اکبر یعقوب فر

استاد بخش تحقیقات تغذیۀ دام و طیور، مؤسسۀ تحقیقات علوم دامی کشور، کرج، ایران یحیی ابراهیم نژاد

دانشیار گروه علوم دامی، دانشگاه آزاد اسلامی واحد شبستر، شبستر، ایران حبیب اقدم شهریار

استادیار گروه علوم دامی، دانشگاه آزاد اسلامی واحد شبستر، شبستر، ایران ابوالفضل قربانی

چکیده

this study was carried out to determination of in vitro binding capacity of organic (wheat and barley) and inorganic (perlite) sources for mn, zn, cu, and fe. for this reason wheat and barley were analyzed chemically for moisture, protein, ash, and ether extract, total carbohydrate, ndf, adf, adl, crude fiber, viscosity, cellulose, and total dietary fiber. the in vitro mineral binding capacity of wheat, barley, and perlite to mn, zn, fe, and cu under sequential simulated physiological conditions of the stomach, small intestine, and colon was investigated and compared. acid washing was efficient in removing most endogenous minerals from samples with the exception of fe. barley showed the highest mineral binding capacity for mn (5.16 percent), zn (11.07 percent), and cu (44.48 percent) in small intestine. perlite had lower mineral binding capacity (mn (0.76 percent), zn (1.74 percent) and cu (1.41 percent) than wheat and barley. organic sources had an affinity for fe > cu > zn > mn. dietary fiber had a negative impact on mineral bioavailability.

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