Farinha de matrizes suínas mortas por causas não infecciosas na nutrição de frangos de corte e aminas biogênicas como indicadores de qualidade

Abstract

The study was run to evaluate the use of meat meals derived from breeding sows, which died due to non - infectious causes on performance and physiological parameters of broilers. The bodies were stored at room temperature and refrigerated during different periods of time. Quantification of biogenic amines and adaptation of equations were also performed for the calculation of the biogenic amine index in rendered pig carcass meals. A completely randomized experimental design in a subdivided time-plot arrangement was applied. The main plot consisted of storage temperature (environmental temperature, ET; or under refrigeration, RT) and the subplots of storage periods (0 h - control, 24, 48, and 72 h) and in parallel samples were obtained from companies dedicated to the production of animal meat meal. The levels of the biogenic amines, that is to say, phenylethylamine, putrescine, cadaverine, histamine, tyramine, spermidine and spermine of all meals were determined by high performance liquid chromatography (HPLC) and their biogenic amine indexes calculated. Meals stored at ET presented higher phenylethylamine, putrescine and tyramine contents compared with those stored at RT after 24 hours storage, whereas spermidine and spermine contents decreased after 24 hours of storage at ET. The meals which were produced by the breeding sows and maintained in different times and storage were used in experimental diets offered to 770 broilers during the first- 21 days of age, in a total of seven treatments with 11 replicates each. Evaluating performance responses, blood parameters and organ morphometry, effects on proventriculus and bursa of Fabricius were observed. The quantification of biogenic amines and the use of indices demonstrate the degree of deterioration of animal meal, especially in meals produced after 24 hours of animal death. These experimentally produced meals did not influence blood parameters and broiler performance up to 21 days of age. However, a deleterious effect was observed on the proventriculus and bursa of Fabricius.