Paul Torun Kumar, Hasan Md Mehedi, Haque Md Anowarul, Talukder Sudipta, Sarker Yousuf Ali, Sikder Mahmudul Hasan, Khan Mohammad Abu Hadi Noor Ali, Sakib Mohammed Nazmus, Kumar Alip
Department of Pharmacology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Population Medicine and AMR Laboratory, Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Vet World. 2020 Jun;13(6):1050-1055. doi: 10.14202/vetworld.2020.1050-1055. Epub 2020 Jun 11.
Global trend to remove the antibiotic growth promoter (AGP) from animals contributes to the exploration of successful measures to sustain production and reduces the intestinal diseases in the post-AGP era. Plant extracts, therefore, have been used to improve performance and intestinal health. Here, we conducted a study to evaluate the effects of neem () leaf extracts (NLE) as alternatives to AGPs in broiler chickens.
Sixty day-old broiler chicks were assigned to 12-floor pens, each stocked with five birds and divided into three treatment groups of four pens per treatment. The groups were: Negative control, basal diet without additives; positive control, basal diet with antibiotics and vitamins; and NLE treated group, basal diet supplemented with 0.1% aqua extract of neem leaves.
Overall feed intake was significantly (p≤0.05) highest in the positive control. Higher body weight, higher dressing percentage, and lower feed conversion ratio were observed in birds treated with NLE compared to the negative control group (p≤0.05) but not the positive control group (p>0.05). There was no significant variation in hematology between different groups. Furthermore, the economic evaluation indicated that the NLE treatment was found cheaper than control and antibiotic treatment in cost-benefit analysis.
We suggest NLE might be a cheaper alternative to antibiotics in broiler production as indicated by improved body weight and feed efficiency.
全球范围内从动物养殖中去除抗生素生长促进剂（AGP）的趋势，促使人们探索能够维持生产并减少AGP停用后肠道疾病的成功措施。因此，植物提取物已被用于提高生产性能和肠道健康水平。在此，我们开展了一项研究，以评估印楝叶提取物（NLE）作为AGP替代品对肉鸡的影响。
将60只1日龄的肉鸡雏鸡分配到12个层架式鸡笼中，每个鸡笼饲养5只鸡，并分为三个处理组，每组四个重复。分组如下：阴性对照组，基础日粮不添加任何添加剂；阳性对照组，基础日粮添加抗生素和维生素；NLE处理组，基础日粮添加0.1%印楝叶水提取物。
总体采食量在阳性对照组中显著最高（p≤0.05）。与阴性对照组相比，NLE处理的鸡体重更高、屠宰率更高且饲料转化率更低（p≤0.05），但与阳性对照组相比无显著差异（p>0.05）。不同组之间血液学指标无显著差异。此外，经济评估表明，在成本效益分析中，NLE处理组比对照组和抗生素处理组更便宜。
我们认为，如体重和饲料效率的改善所示，NLE可能是肉鸡生产中比抗生素更便宜的替代品。
