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An investigation was carried out to study the nutritional value of cotton seed meal samples produced in Iran, under different conditions
Although total gossypol contents in different batches of the cotton seed meal were almost identical, free gossypol content of the screw press samples was lower than that of pre-press solvent extracted samples.
Available lysine in screw press samples was lower than that of pre-press solvent-extracted samples.
Gross protein value (G.P.V.)of screw press samples was lower than that of pre-press solvent-extracted samples.
Metabolizable energy(M.E.)contents of the cotton seed meal samples were not significantly different from each other. Supplementation of the low lysine-low Protein cotton seed meal with lysine improved bothG.P.V. andM.E.