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ORIGINAL RESEARCH article
Front. Vet. Sci.
Sec. Animal Nutrition and Metabolism
Volume 12 - 2025 | doi: 10.3389/fvets.2025.1550463
Effects of enzymes originating from Trichoderma reesei on the performance, organ index, serum biochemical indices, and intestinal health homeostasis of broiler chicken
Provisionally accepted
Luyao Zhang 1
Yang Liu 1
Chunyuan Xie 2
Xuan Huang 1 Ping Deng 1 Chuang Li 1 Weican Wan 1
Qiuzhong Dai 1 Yan Hu 1 Yuyong Ma 3 Xu Zhang 1* Guitao Jiang 1*- 1 Hunan institute of animal husbandry and veterinary medicine, Changsha, China
- 2 CJ International Trading CO., LTD, Shanghai, China
- 3 Hengyang Academy of Agricultural Sciences, Hengyang, China
To study the effect of combined enzymes from Trichoderma reesei on growth performance, organ index, serum biochemical indices, and gut microbiota in broiler chickens, an experiment was conducted with six hundred and forty-eight one-day-old AA broilers. The broilers were randomly divided into six groups. The control group was fed a corn -soybean meal basal diet, and the experimental groups were supplemented with different enzyme combinations. The experiment lasted 42 d. The results showed that from day 1 -21, the average daily gain (ADG) of T1 -T4 groups was higher than that of the control group (P = 0.005). From day 22 -42, T2 had a higher ADG than T3 and T4 (P = 0.017). T1, T3, and T4 had a lower feed -to -gain ratio (F/G) than the control group from day 1 -21 (P = 0.001).In terms of serum indices, T1 -T5 had higher levels of triiodothyronine (T3), growth hormone (GH), and insulin -like growth factor -1 (IGF -1) at 21 and 42 days compared to the control group (P < 0.001), with some exceptions. T2 -T5 had higher levels of superoxide dismutase (SOD), glutathione peroxidase (GSH -PX), and glutathione (GSH) at 21 and 42 days (P < 0.001), with some exceptions.For organ indices, T3 had a lower gizzard index and T5 had a higher gizzard index than the control group (P = 0.001), and T4 had a lower liver index than the control group (P = 0.041). Enzyme supplementation also changed the gut microbiota.In conclusion, all enzyme systems improved broiler growth performance from day 1 -21. Only xylanase and the carbohydrase system from Trichoderma reesei enhanced growth from day 22 -42. All enzyme systems enhanced antioxidant and immune capacities during the study period.
Keywords: broiler chicken, Enzyme system, growth performance, Organ indices, Serum biochemical parameters, Gut Microbiota
Received: 23 Dec 2024; Accepted: 14 Mar 2025.
Copyright: © 2025 Zhang, Liu, Xie, Huang, Deng, Li, Wan, Dai, Hu, Ma, Zhang and Jiang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Xu Zhang, Hunan institute of animal husbandry and veterinary medicine, Changsha, China
Guitao Jiang, Hunan institute of animal husbandry and veterinary medicine, Changsha, China
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