Critérios de avaliação de um grupo de matérias-primas recebido em uma fábrica de ração

Abstract

The present study aimed to evaluate the variability of classification and quality parameters of ingredients of vegetable and animal origin received in an animal feed mill in the period from November 2020 to November 2021. For evaluation, the reports of bromatological analysis and classification of soybean meal, meat and bone meal, extruded whole soybean, extruded semi-whole soybean and wheat bran, corn, millet and soybean, available in the feed mill database, were considered. 318, 269 and 293 grain classification reports were used for corn, millet and soybean, respectively, and 20, 101, 108, 57 and 61 reports were analyzed for wheat bran, whole and semi-whole extruded soybeans, soybean meal and meat and bone meal, respectively, issued by two different laboratories, containing the chemical composition and quality indicators. The results of the analyses contained in the reports were tabulated in spreadsheets, according to the period, supplier and classification result, and the average, minimum and maximum values of each parameter were determined, as well as the coefficient of variation. The mean values of the bromatological parameters analyzed in the ingredients were close to the values described in the Brazilian tables for poultry and swine. The average values of ureatic activity in the whole extruded soybean, semi-whole extruded soybean and soybean meal and the acid index in the meat meal are in accordance with the recommended values, however the average values of protein solubility in KOH of whole and semi-whole extruded soybean do not fit in the range of ideal variation for this parameter. All mean values of the classification criteria for corn, millet and soybeans are in accordance with the standards set by the feed mill, only some maximum values of the criteria exceed the tolerance limit for the parameter. Soy dominated the cases of devolution among the grains in the evaluation period, representing 2.73% of the total, followed by millet with 2.23% and corn with 1.89%. It can be concluded that in general, the averages of the bromatological parameters analyzed in the ingredients were similar to those found in the Brazilian tables for poultry and swine, which becomes a positive factor for the use of ingredients in the preparation of diets for animals in the feed mill. Most of the averages of the quality indicators are in accordance with the recommendation. Most of the grain classifications performed by the feed mill laboratory achieved approval results for receiving the raw material.