Published in Scientific Papers. Series D. Animal Science, Vol. LX
Written by Petru Alexandru VLAICU, Tatiana Dumitra PANAITE, Dumitru DRAGOTOIU, Mariana ROPOTA, Eugen BOBE, Margareta OLTEANU, Rodica Diana CRISTE
A feeding trial was conducted on 75, ROSS308 (0-42days) broilers, to evaluate the quality of the meat from broilers which received food industry by-products in their diets: rapeseeds meal and grape pomace, or flaxseeds meal and buckthorn meal. The broiler chicks were assigned to 3 groups (C, E1 and E2), and were housed in an experimental hall with controlled environmental conditions: average air temperature 27.07±2.75oC, humidity 64.80±9.57%. For 10 days, during the starter phase, all chicks received a conventional compound feed. In the other two stages (growing, finishing), compared to the conventional diet given to the C group, the diet formulations of the experimental groups included different proportions, depending on the phase of development, rapeseeds meal and grape pomace (E1), or flaxseeds and buckthorn meals (E2). The highest polyphenols concentration was determined in the finishing diet formulation for group E1 (with 8% rapeseeds meal and 4% grape pomace). The dietary concentration of ɷ 3 polyunsaturated fatty acids (ɷ 3 PUFA) in the diet formulations for group E2 increased with the level of dietary flaxseeds meal (2.5% during the grower phase and 8% in the finishing phase). Six broilers from each group were slaughtered in the end of the trial and meat (breast and thigh) and liver samples were collected and assayed for dry matter, protein, fat, ash, fatty acids and cholesterol. The highest concentration of ɷ 3 PUFA, which are essential for human health, were determined in the breast and thigh of E2 broilers (flaxseeds meal and buckthorn meal). The cholesterol level in the breast meat and thigh samples was not significantly different between groups; however, it was lowerin the experimental groups than in the control group. The fat level in the liver samples collected from C group broilers was significantly (P≤0.05) higher than in the experimental groups.
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