Determination Of Tannin, Tyrpsin Inhi5itor, Phytate, Cyanide, Oxalate, Saponin And Crude Protein Contents In Poultry Feed Of Four Animal Feeds Companies In Nigeria

ABSTRACT

The tannin, cyanide, oxalates, phytate, trypsin inhibitor, crude protein and saponin contents of poultiy feeds of four animal feed companies in N igeria were evaluated. Tannin, oxalate and phytate were determined ;pectrophotometically, crude protein and tiypsin inhibitor was determined by titration, saponin was determined by solvent extraction gravimetric method While total cyanide was determined by enzymatic analysis. For the four different feeds (Top, Pfizer, Guinea and Vital) total cyanide levels in rnI rames from 3.00-8.32. 8.71-22.18. 2.50-20.20 and 5.15- 19.00, for broiler starter, broiler finishers, growers and layer feed respectively. Tannin levels obtained in % ranges from 0.07 - 0.19, .02- 0. 17, 0.05-0.18 and 0.03 — 13 for broiler starter, broiler finisher, grower and layers feeds respectively. Trypsin inhibitor levels obtained in Tui/g ranges from 40-159, 55 — 516, 20 — 126 and 60 — 84 for broiler starter, broiler finisher. growers and layers fed respectively, vaty concentrations crude protein. oxalates phytate and saponin were also measured in these leds. The effects of these phytotoxms and antinutritional factors are discussed.