Lima Tiago Ronimar Ferreira, Gallo Sarita Bonagurio, Rosa Alessandra Fernandes, E Silva Saulo da Luz, Brochado Thais, Bezerra Helena Viel Alves, Putrino Soraia Marques, Martins Marcela Buosi, Leme Paulo Roberto
Department of Animal Science, University of São Paulo, Duque de Caxias Norte ave. Pirassununga, SP 13635-900, Brazil.
Neovia Group, João Augusto Cirelli St., Descalvado, SP 3690-000, Brazil.
Asian-Australas J Anim Sci. 2020 Jun;33(6):913-920. doi: 10.5713/ajas.19.0050. Epub 2019 Jul 1.
The objective of this experiment was to compare conventional antioxidants and plant extracts for oxidative stress control in lambs fed a high-concentrate diet.
Forty-eight male Dorper×Santa 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 2×2 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.
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.
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.
本实验的目的是比较常规抗氧化剂和植物提取物对饲喂高浓缩日粮的羔羊氧化应激的控制效果。
选用48只初始体重为20±1.49千克、60日龄的雄性杜泊×圣伊内斯羔羊，采用2×2析因排列的完全随机区组设计，评估博落回和厚朴植物提取物组合（0对320毫克/千克干物质[DM]）与硒+维生素E（0对100国际单位/千克DM的维生素E和0.1毫克/千克DM的硒）联合使用的效果。动物被饲养在单独的围栏中，接受由80%全玉米和20%蛋白质颗粒组成的高浓缩日粮，为期60天。在实验开始时及每隔14天对动物进行称重以监测生长性能。在实验期间进行三次血液采样，以评估氧化和蛋白质参数。
以维生素E和硒作为添加剂的处理对最终体重、日增重、胴体重量和背最长肌中的硒含量有积极影响（p = 0.01）。植物提取物倾向于改善最终体重（p = 0.064）和日增重（p = 0.059），显示出与硒和维生素E相似的效果。处理对血液蛋白质没有影响，表明动物在整个实验过程中健康。
植物提取物的使用与添加硒和维生素E具有相似的效果，日粮中添加添加剂可使羔羊生长性能更好，但两种补充剂对氧化应激均无强烈影响。
