Mustafa Ahsan, Bai Shiping, Zeng Qiufeng, Ding Xuemei, Wang Jianping, Xuan Yue, Su Zhuowei, Zhang Keying
Institute of Animal Nutrition, Key Laboratory for Animal Disease-Resistance Nutrition of China, Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China.
Animals (Basel). 2021 Sep 28;11(10):2832. doi: 10.3390/ani11102832.
Three-hundred and sixty-day-old male broilers underwent three treatments with six replicates of 20 birds per treatment. The experimental diets included NC: normal corn diet; ACL: lower level (39.6-41.24%) of AC; and ACH: a higher level (56.99-59.12%) of AC. During phase 1 (0-21 d), broilers fed on AC showed lower ( < 0.05) body weight (BW), body weight gain (BWG), and feed conversion ratio (FCR) as compared with the NC group. During phase 2 (22-42 d), the NC group and ACL group showed better ( < 0.05) BW, BWG, and FCR than the ACH group. The footpad lesion score ( = 0.05) and litter moisture percentage ( < 0.05) were found to be higher in the ACH group. During phase 1, the ACL group showed a lower level of malondialdehyde (MDA) contents ( < 0.05) in serum; moreover, catalase (CAT) ( < 0.05) and glutathione peroxidase (GSH-Px) activities ( < 0.05) were found lower in both AC-containing groups. During phase 2, CAT activity in serum was found higher ( < 0.05) in the ACH group. During phase 1, the NC group showed higher CAT ( = 0.05), GSH-Px ( < 0.05), and superoxide dismutase (SOD) activity ( = 0.03); however, it showed lower MDA ( < 0.05) and total-antioxidative capability (T-AOC) ( < 0.05) in the liver. During phase 1, in breast muscle, CAT, SOD, and T-AOC were higher ( < 0.05) in the NC group. During phase 1, total cholesterol and high-density lipoprotein were found to be lower ( < 0.05) in the ACL group. Similarly, triglyceride and low-density lipoprotein were found to be lower ( < 0.05) in the ACL group than the ACH group. During phase 1, villus height was found to be higher ( < 0.05) in the ACH group. Moreover, the goblet cell (GC) was found to be higher ( < 0.05) in the NC group than the ACL group. During phase 2, GC was found to be higher ( < 0.05) in the ACL group. In ileal digesta, during phase 1, acetic acid, propionic acid, and butyric acid (BA) levels were found to be higher ( < 0.05) in the ACL group. In cecal digesta, BA was significantly lower ( < 0.05) in the NC group.
360日龄雄性肉鸡接受了三种处理，每种处理设6个重复，每个重复20只鸡。实验日粮包括：NC：正常玉米日粮；ACL：较低水平（39.6 - 41.24%）的酸；ACH：较高水平（56.99 - 59.12%）的酸。在第1阶段（0 - 21天），与NC组相比，采食含酸日粮的肉鸡体重（BW）、体重增加（BWG）和饲料转化率（FCR）较低（<0.05）。在第2阶段（22 - 42天），NC组和ACL组的BW、BWG和FCR比ACH组更好（<0.05）。发现ACH组的脚垫损伤评分（=0.05）和垫料湿度百分比更高（<0.05）。在第1阶段，ACL组血清中丙二醛（MDA）含量较低（<0.05）；此外，两个含酸组的过氧化氢酶（CAT）（<0.05）和谷胱甘肽过氧化物酶（GSH - Px）活性较低（<0.05）。在第2阶段，ACH组血清中的CAT活性较高（<0.05）。在第1阶段，NC组的CAT（=0.05）、GSH - Px（<0.05）和超氧化物歧化酶（SOD）活性较高（=0.03）；然而，其肝脏中的MDA（<0.05）和总抗氧化能力（T - AOC）较低（<0.05）。在第1阶段，NC组胸肌中的CAT、SOD和T - AOC较高（<0.05）。在第1阶段，ACL组的总胆固醇和高密度脂蛋白较低（<0.05）。同样，ACL组的甘油三酯和低密度脂蛋白比ACH组低（<0.05）。在第1阶段，ACH组的绒毛高度较高（<0.05）。此外，NC组的杯状细胞（GC）比ACL组多（<0.05）。在第2阶段，ACL组的GC较多（<0.05）。在回肠内容物中，在第1阶段，ACL组的乙酸、丙酸和丁酸（BA）水平较高（<0.05）。在盲肠内容物中，NC组的BA显著较低（<0.05）。
