Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
Poult Sci. 2019 Jul 1;98(7):2781-2789. doi: 10.3382/ps/pez070.
This work aimed to investigate the effects of the palygorskite (PAL) composites on the growth performance and antioxidant status in broiler chickens. A total of 192 one-day-old Ross 308 broilers were randomly divided into 3 treatment groups. Broilers were fed basal diets supplemented with either 50 mg/kg chlortetracycline (CTC group), 1 g/kg ZnO/PAL (ZnO/PAL group), or 1 g/kg chitooligosaccharides/ZnO/PAL (COS/ZnO/PAL group), respectively. The results showed that PAL composites were found to exhibit similar effects on growth performance as CTC (P > 0.05). ZnO/PAL and COS/ZnO/PAL enhanced the activity of serum glutathione peroxidase (GSH-Px) compared with CTC both at 21 and 42 d (P < 0.05). Compared with the CTC group, COS/ZnO/PAL enhanced serum catalase (CAT) activity at 21 d (P < 0.05), and decreased serum malondialdehyde (MDA) content at 42 d (P < 0.05). Compared with the CTC group, ZnO/PAL decreased duodenal mucous MDA content at 21 d, while ZnO/PAL did not affect activities of superoxide dismutase (SOD) and GSH-Px in the duodenum (P > 0.05). The duodenal mucous activities of SOD and GSH-Px were the highest in the COS/ZnO/PAL group at 42 d (P < 0.05). At 21 d, broilers in the COS/ZnO/PAL group had the lowest MDA content and the highest total antioxidant capacity (T-AOC) in the jejunum (P < 0.05). Palygorskite composites decreased ileum mucous MDA content compared with CTC treated broilers at 21 d (P < 0.05). At 42 d, ileum mucous T-AOC was increased both in the ZnO/PAL and COS/ZnO/PAL groups compared with the CTC group (P < 0.05). The ileum mucous GSH-Px activities both in the ZnO/PAL and COS/ZnO/PAL groups were increased compared with the CTC group (P < 0.05). In conclusion, the broilers given the basal diet supplemented with the PAL composites exhibited similar growth performance to their counterparts in the AGP group. Additionally, the PAL composites improved the antioxidant status of broilers and the beneficial effects of COS/ZnO/PAL on the antioxidant status are more pronounced.
本研究旨在探究凹凸棒石（PAL）复合材料对肉鸡生长性能和抗氧化状态的影响。将 192 只 1 日龄罗斯 308 肉鸡随机分为 3 个处理组，分别饲喂基础日粮添加 50mg/kg 金霉素（CTC 组）、1g/kg 氧化锌/凹凸棒石（ZnO/PAL 组）和 1g/kg 壳寡糖/氧化锌/凹凸棒石（COS/ZnO/PAL 组）。结果表明，与 CTC 相比，PAL 复合材料对生长性能的影响与 CTC 相似（P＞0.05）。ZnO/PAL 和 COS/ZnO/PAL 组在 21 和 42 d 时血清谷胱甘肽过氧化物酶（GSH-Px）活性均高于 CTC 组（P＜0.05）。与 CTC 组相比，COS/ZnO/PAL 组在 21 d 时血清过氧化氢酶（CAT）活性升高（P＜0.05），42 d 时血清丙二醛（MDA）含量降低（P＜0.05）。与 CTC 组相比，ZnO/PAL 组在 21 d 时十二指肠黏膜 MDA 含量降低，而在十二指肠中 SOD 和 GSH-Px 活性不受影响（P＞0.05）。42 d 时，COS/ZnO/PAL 组十二指肠黏膜 SOD 和 GSH-Px 活性最高（P＜0.05）。在 21 d 时，与 CTC 处理组相比，COS/ZnO/PAL 组空肠 MDA 含量最低，总抗氧化能力（T-AOC）最高（P＜0.05）。与 CTC 处理组相比，21 d 时添加 PAL 复合材料可降低回肠黏膜 MDA 含量（P＜0.05）。42 d 时，与 CTC 组相比，ZnO/PAL 和 COS/ZnO/PAL 组回肠黏膜 T-AOC 增加（P＜0.05）。ZnO/PAL 和 COS/ZnO/PAL 组回肠黏膜 GSH-Px 活性均高于 CTC 组（P＜0.05）。综上所述，基础日粮中添加 PAL 复合材料的肉鸡生长性能与 AGP 组相当，同时，PAL 复合材料可改善肉鸡的抗氧化状态，而 COS/ZnO/PAL 的有益效果更为显著。
