Simoni Marica, Goi Arianna, Pellattiero Erika, Mavrommatis Alexandros, Tsiplakou Eleni, Righi Federico, De Marchi Massimo, Manuelian Carmen L
Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126, Parma, Italy.
Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020, Legnaro, Italy.
Arch Anim Breed. 2022 Apr 1;65(1):135-144. doi: 10.5194/aab-65-135-2022. eCollection 2022.
Feed additives including natural bioactive compounds (BCs) in combination with vitamin E (VitE) and organic Se could mitigate animal stress associated with intensive livestock farming due to their anti-inflammatory and antioxidant properties. Yeast and yeast derivate are included in feed additives as probiotic products and digestion promoters. is a source of bioactive compounds and has been tested in monogastrics, exhibiting many immunostimulating and hepato-protective activities. However, the literature lacks information regarding effects on beef cattle performance and health status. The aim of the present study was to evaluate the impact on beef cattle's feed intake, health and oxidative status, and growth performances of the inclusion of a commercial supplement (CS) containing VitE, organic Se, yeast derivate, and extract during the fattening and finishing period. A total of 143 Charolaise male cattle were allotted into 12 pens of 11-12 animals each and assigned to a control ( body weight - BW) or a treated ( BW) group. Each group included two replicates of three pens. The treated groups were supplemented with 20 . Feed intake was measured monthly on a pen base during two consecutive days. Total mixed ration and fecal samples were collected at three time points (monthly, from November to February) and pooled by replicate for the analyses to monitor digestibility. Blood samples were individually collected at the beginning and at the end of the trial for oxidative status and metabolic profile determination. Final BW and carcass weight were individually recorded to calculate average daily gain, feed conversion ratio, and carcass yield. Similar feed digestibility between groups were observed during the whole experiment. Feed intake, growth performances, final body weight, average daily gain, feed conversion rate, oxidative status, and metabolic profile were not affected by the dietary inclusion of the tested CS indicating no detrimental effect of the treatment. Different doses of this product should be tested in the future in order to provide a more complete report on the product efficacy.
饲料添加剂，包括天然生物活性化合物（BCs）与维生素E（VitE）和有机硒的组合，因其抗炎和抗氧化特性，可以减轻集约化畜牧业中动物的应激反应。酵母和酵母衍生物作为益生菌产品和消化促进剂包含在饲料添加剂中。是生物活性化合物的来源，并且已经在单胃动物中进行了测试，表现出许多免疫刺激和肝脏保护活性。然而，文献中缺乏关于其对肉牛性能和健康状况影响的信息。本研究的目的是评估在育肥和育肥期添加含有VitE、有机硒、酵母衍生物和提取物的商业补充剂（CS）对肉牛采食量、健康和氧化状态以及生长性能的影响。总共143头夏洛莱公牛被分配到12个围栏中，每个围栏有11 - 12头动物，并分为对照组（体重 - BW）或处理组（BW）。每组包括三个围栏的两个重复。处理组补充20 。在连续两天内每月以围栏为基础测量采食量。在三个时间点（每月，从11月到2月）收集全混合日粮和粪便样本，并按重复进行合并以分析监测消化率。在试验开始和结束时分别采集血样以测定氧化状态和代谢谱。分别记录最终体重和胴体重以计算平均日增重、饲料转化率和胴体产量。在整个实验过程中，各组之间观察到相似的饲料消化率。日粮中添加测试的CS对采食量、生长性能、最终体重、平均日增重、饲料转化率、氧化状态和代谢谱没有影响，表明该处理没有有害影响。未来应该测试该产品的不同剂量，以便提供关于产品功效更完整的报告。
