Federal Rural University of Pernambuco, Gregório Ferraz Nogueira Avenue, S/N, Serra Talhada, PE, 56909-535, Brazil.
Federal University of Western Pará, Vera Paz Street, S/N, Santarém, PA, 68040-255, Brazil.
Trop Anim Health Prod. 2023 Mar 13;55(2):107. doi: 10.1007/s11250-023-03522-6.
Monensin sodium is one of the most common ionophores used in livestock feeding; however, ionophores are condemned by organized consumer groups. Bioactive compounds from plants found in the seasonally dry tropical forest have similar mechanisms of action as ionophores. The aim was to investigate the effects of replacing monensin sodium with phytogenic additives on the nutritional efficiency of beef cattle. Five 14-month-old Nellore bulls (average body weight 452.68 ± 42.60 kg) were used in the study. The experiment was designed as a 5 × 5 Latin Square (five treatments and five 22-day experimental periods). Within each period, 15 days were used for adaptation of animals to experimental conditions and 7 days for data collection. Bulls were fed a control diet (without additives), monensin (a diet containing monensin sodium 40% as a synthetic additive), and three diets containing phytogenic additives prepared from Anadenanthera macrocarpa (Benth) Brenan, Mimosa tenuiflora (Willd) Poiret, or Prosopis juliflora (Sw.) DC. Nutritional efficiency was assessed through feed intake, nutrient digestibility, feeding behavior, and hematological parameters. Monensin and phytogenic additives did not influence (P > 0.05) feeding behavior or hematological parameters, but the nutrient intake was highest for bulls supplemented phytogenic additives (P < 0.05). Monensin supplementation did not influence (P > 0.05) feed intake. The phytogenic additives and monensin sodium increased (P < 0.05) the nutrient digestibility. Therefore, the phytogenic additives from P. juliflora, A. macrocarpa, and M. tenuiflora can be recommended to enhance the nutritional efficiency of confined Nellore cattle.
莫能菌素钠是畜牧业最常用的离子载体之一；然而，离子载体受到了有组织的消费者团体的谴责。在季节性干燥的热带森林中发现的植物中的生物活性化合物具有与离子载体相似的作用机制。本研究旨在探讨用植物源添加剂替代莫能菌素钠对肉牛营养效率的影响。研究使用了 5 头 14 月龄的内罗尔公牛（平均体重 452.68±42.60kg）。试验设计为 5×5 拉丁方（五种处理，五个 22 天的试验期）。在每个时期内，前 15 天用于动物适应试验条件，后 7 天用于数据收集。公牛饲喂基础日粮（不含添加剂）、莫能菌素（含 40%莫能菌素钠的合成添加剂日粮）和三种含有源自 Anadenanthera macrocarpa（Benth）Brenan、Mimosa tenuiflora（Willd）Poiret 或 Prosopis juliflora（Sw.）DC 的植物源添加剂的日粮。通过采食量、养分消化率、采食行为和血液学参数评估营养效率。莫能菌素和植物源添加剂对采食行为或血液学参数没有影响（P＞0.05），但添加植物源添加剂的公牛的养分摄入量最高（P＜0.05）。莫能菌素添加没有影响（P＞0.05）采食量。植物源添加剂和莫能菌素钠提高了（P＜0.05）养分消化率。因此，推荐使用 P. juliflora、A. macrocarpa 和 M. tenuiflora 的植物源添加剂来提高圈养内罗尔牛的营养效率。
