Effect of Macleaya cordata and Magnolia officinalis plant extracts on oxidative stress control in lambs fed a high-concentrate diet

Author(s)

Ferreira Lima, Tiago Ronimar ^[1] ; Gallo, Sarita Bonagurio ^[1] ; Rosa, Alessandra Fernandes ^[1] ; da Luz e Silva, Saulo ^[1] ; Brochado, Thais ^[1] ; Alves Bezerra, Helena Viel ^[1] ; Putrino, Soraia Marques ^[2] ; Martins, Marcela Buosi ^[2] ; Leme, Paulo Roberto ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Anim Sci, Duque Caxias Norte Ave, BR-13635900 Pirassununga, SP - Brazil

^[2] Neovia Grp, Joao Augusto Cirelli St, BR-3690000 Descalvado, SP - Brazil

• Document type: Journal article
• Source: ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES; v. 33, n. 6, p. 913-920, JUN 2020.
• Web of Science Citations: 2

Abstract

Objective: The objective of this experiment was to compare conventional antioxidants and plant extracts for oxidative stress control in lambs fed a high-concentrate diet. Methods: Forty-eight male DorperxSanta Ines lambs with an initial weight of 20 +/- 1.49 kg and 60 days of age, were used to evaluate the effects of feeding a combination of Macleaya cordata and Magnolia officinalis plant extracts (0 vs 320 mg/kg dry matter {[}DM]) in combination with selenium+vitamin E (0 vs 100 IU/kg DM of vitamin E and 0.1 mg/kg DM of selenium) in a completely randomized block design in a 2x2 factorial arrangement. The animals were housed in individual pens and received a high-concentrate diet consisting of 80% whole corn and 20% protein pellet for 60 days. The animals were weighed at the beginning of the experiment and every 14 days for performance monitoring. Three blood samplings were performed during the experimental period for the evaluation of oxidative and protein parameters. Results: The treatments with vitamin E and selenium as additives had a positive influence on final weight, daily weight gain, carcass weight, and selenium content in longissimus muscle (p = 0.01). Plant extracts tended to improve final weight (p = 0.064) and daily weight gain (p = 0.059), showing similar effect as selenium and vitamin E. There was no effect of treatment on blood proteins, indicating that the animals were healthy throughout the experiment. Conclusion: The use of plant extracts had a similar effect as the addition of selenium and vitamin E, with dietary inclusion of additives resulting in better performance of lambs but both supplements did not have strong influence on oxidative stress. (AU)

• FAPESP's process: 14/26245-2 - Antioxidant effect of plant extracts on oxidative stress in feedlot sheep fed a diet with high concentrate
• Grantee: Paulo Roberto Leme
• Support Opportunities: Regular Research Grants