Effect of integrated crop-livestock systems in carcass and meat quality of Nellore cattle

Autor(es)

Cardoso da Luza, Patricia Aparecida ^[1] ; Andrighetto, Cristiana ^[2] ; Lupatini, Gelci Carlos ^[3] ; Aranha, Helena Sampaio ^[2] ; Trivelin, Gustavo Antunes ^[2] ; Mateus, Gustavo Pavan ^[3] ; Santos, Carolina Toledo ^[4] ; Francisco, Caroline de Lima ^[1] ; Castilhos, Andre Michel ^[1] ; Jorge, Andre Mendes ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Sch Vet Med & Anim Sci, Dept Anim Prod, BR-18618000 Botucatu, SP - Brazil

^[2] Sao Paulo State Univ, UNESP, Coll Agr & Technol Sci, BR-17900000 Dracena, SP - Brazil

^[3] Agencia Paulista Tecnol Agronegocios, BR-16900970 Andradina, SP - Brazil

^[4] Sao Paulo State Univ, Sch Agr, UNESP, BR-18610034 Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: LIVESTOCK SCIENCE; v. 220, p. 83-92, FEB 2019.
• Citações Web of Science: 3

Resumo

Integrated crop-livestock systems (ICLS) are strategy to increase productivity and income for the farmers while simultaneously achieving sustainability. However, its effects on the carcass and meat quality of the animals produced in it need to be elucidated. Thus, the objective of this study was to evaluate carcass and meat characteristics of Nellore cattle finished in ICLS without shade availability (integrated crop-livestock: ICL) and with two tree densities (integrated crop-livestock-forest, ICLF, at 196 trees/ha and 448 trees/ha). The experimental design was in complete blocks, with three treatments (ICL, ICLF-1L and ICLF-3L) and four replicates per treatment, totaling 12 experimental plots. Sixty castrated Nellore cattle of approximately 28 +/- 2.81 months of age and mean weight at 385.71 +/- 27.17 kg were used. After the slaughter of the animals, 48 samples of the longissimus thoracis muscle were collected for carcass and meat quality analyzes. There were no differences (P > 0.05) between the treatments for the final live weight, contributing to the absence of difference in weight and yield of the hot carcass, forequarter, hindquarter and flank (P > 0.05). Similarly, no differences were found (P > 0.05) between treatments for initial and final ribeye area, initial and final backfat thickness, marbling, pH and glycogen, both measured at 2h and 24 h post mortem. The proximate composition, cholesterol, pH, cooking loss, shear force, collagen, meat color and microbiological analysis presented no differences (P > 0.05) among the evaluated treatments. In relation to the fatty acids of the meat and the nutritional quality index (NQI), no was observed difference between treatments (P > 0.05), but the omega 6:omega 3 ratio, of the meat of the animals presented values considered healthy for human consumption in all evaluated treatments, characteristic of meat from animals to pasture. Thus, the study concludes that the integration systems that use the tree component do not benefit the quality of the final product, the meat of Nellore cattle, but should be recommended because they do not interfere in quality of the same. (AU)

• Processo FAPESP: 14/12662-0 - Desempenho na terminação e qualidade da carcaça e da carne de bovinos criados em sistema agrossilvipastoril
• Beneficiário: Patrícia Aparecida da Luz Zanetti
• Modalidade de apoio: Bolsas no Brasil - Doutorado