DISTRIBUTION OF PROTEIN, CALCIUM AND PHOSPHURUS IN SAMPLES OF INGREDIENTS USED IN FEEDSTUFFS COMMERCIAL DIETS

Abstract

Distribution of crude protein of some feedstuffs used in the formulation of commercial diets in southeastern Mexico was evaluated, as well as distribution of calcium (Ca) and phosphorous (P) from calcium carbonate and calcium ortophosphate, respectively. Data were obtained from the crude protein analysis of samples of 10 feedstuffs used in a feed commercial plant. Feedstuffs evaluated were soybean meal, ground white corn, ground sorghum, fish meal, wheat bran, meat and bone meal, poultry byproduct meal, corn gluten meal, dried poultry manure, and sunflower meal. Test of normality for crude protein, Ca or P of the samples for each feedstuff were performed by the KolmogorovSmirnov test. Six of the 10 feedstuffs evaluated for crude protein showed a non-normal distribution: ground sorghum, wheat bran, meat and bone meal, poultry byproduct meal, corn gluten meal and sunflower meal. Samples of calcium carbonate and calcium orthophosphate were non-normally distributed for Ca and P. Lack of normal distribution of the nutrients in these feedstuffs used to formulate commercial diets may reduce formulation programs efficiency which assume normality