Tropical grass and legume pastures may alter lamb meat physical and chemical characteristics.

Autor: Hampel VS; Department of Animal Science, Universidade Federal do Rio Grande do Sul, 7712 - Av. Bento Gonçalves, Rio Grande do Sul, 915400-000, Porto Alegre, Brazil., Poli CHEC; Department of Animal Science, Universidade Federal do Rio Grande do Sul, 7712 - Av. Bento Gonçalves, Rio Grande do Sul, 915400-000, Porto Alegre, Brazil. cesar.poli@ufrgs.br., Joy M; Centro de Investigación y Tecnología Agroalimentaria de Aragón, Instituto Agroalimentario de Aragón (IA2-CITA), Avda. Montañana 930, 50059, Zaragoza, Spain., Tontini JF; Department of Animal Science, Universidade Federal do Rio Grande do Sul, 7712 - Av. Bento Gonçalves, Rio Grande do Sul, 915400-000, Porto Alegre, Brazil., Devincenzi T; Department of Animal Science, Universidade Federal do Rio Grande do Sul, 7712 - Av. Bento Gonçalves, Rio Grande do Sul, 915400-000, Porto Alegre, Brazil., Pardos JRB; Centro de Investigación y Tecnología Agroalimentaria de Aragón, Instituto Agroalimentario de Aragón (IA2-CITA), Avda. Montañana 930, 50059, Zaragoza, Spain., Macedo REF; Graduate Program in Animal Science, Pontifícia Universidade Católica Do Paraná, 1155 Imaculada Conceição, Curitiba, Paraná, 80215-901, Brazil., Nalério EN; Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pecuária Sul, Rio Grande do Sul, 96401-970, Bagé, Brazil., Saccol AGF; Department of Animal Science, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil., Rodrigues E; Food Science and Technology Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil., Manfroi V; Food Science and Technology Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil., Fajardo NM; Department of Animal Science, Universidade Federal do Rio Grande do Sul, 7712 - Av. Bento Gonçalves, Rio Grande do Sul, 915400-000, Porto Alegre, Brazil.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2021 Aug 03; Vol. 53 (4), pp. 427. Date of Electronic Publication: 2021 Aug 03.
DOI: 10.1007/s11250-021-02861-6
Abstrakt: The present study assessed the influence of the type of the tropical pastures on lamb body weight (BW) gain and meat quality. Fifty-four lambs were allocated to three grazing pastures: (1) AG - Aruana grass (Panicum maximum cv. IZ-5); (2) PP - pigeon pea legume (Cajanus cajan cv. Anão); and (3) CS - contiguous swards, half of the paddock with AG and half with PP. After 92 days of grazing, the lambs were slaughtered. Carcasses were evaluated and the longissimus muscle was collected to determine color, lipid profile, tocopherol concentrations, and lipid oxidation. Although the pastures present differences in the characteristics of nutritional quality, the animals did not show difference in BW gain. The results show that all forage presented similar concentration of alpha-tocopherol (137 ± 14.37 mg kg -1 of fresh matter), whereas total and condensed tannin contents were greater in PP, intermediate in CS, and the lowest in AG treatment (P = 0.0001). Meat α-tocopherol content was similar among treatments (P = 0.1392), with an average concentration close to the optimal level to reduce the meat oxidation. Meat from AG treatment had 45 and 25% lower n-6/n-3 ratio than meat from PP and CS treatments, respectively. The legume increases the unsaturated fatty acids and the grass can reduce the n6/n3 ratio. The level of condensed tannin concentration did show to have important effect on meat characteristics. Both tropical pastures studied can provide a high amount of alpha-tocopherol, generating a great potential to increase the concentration of this antioxidant in lamb's meat.
(© 2021. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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