Volume 14, Issue 39 (5-2023)                   rap 2023, 14(39): 10-20 | Back to browse issues page

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Bozorgtabar P, Kazemifard M, Rezaei M, Mehraban P. (2023). Effect of Superworm Bioactive Peptides on Performance, Morphology and Microbial Population of Intestine and Immune Responses in Broiler Chickens. rap. 14(39), 10-20. doi:10.61186/rap.14.39.10
URL: http://rap.sanru.ac.ir/article-1-1303-en.html
Faculty member of Sari University of Agricultural Sciences and Natural Resources
Abstract:   (1367 Views)
Extended Abstract
Introduction and Objective: The use of antibiotics in poultry nutrition, in addition to their importance in preventing diseases, causes an increase in congenital anomalies, chronic diseases, increased microbial resistance and hundreds of other small and large complications, which is attributed to the current health problems of human society. The focus has always been on animal welfare, environmental care, limited use of medicines and the production of a healthy product without chemical residues that do not endanger human health. One of the suitable alternatives to antibiotics is bioactive peptides.
Material and Methods: This experiment was used in a completely randomized design with 240 one-day old male commercial Ross 308 broilers in six treatments, five replications (eight chickens per replication). Experimental treatments include: basal diet, basal diet + 0.1% of vitamin E and 0.05% of maduramicin, basal diet + 0.05% of maduramicin, basal diet + 200 mg / kg superworm peptide, basal diet +400 mg / kg were superworm peptide and the basal diet was + 600 mg / kg superworm peptide. The effect of treatments on performance, microbial population, intestinal morphology and immune system response of broilers was investigated.
Results: Addition of maduramicin (treatment 3) and superworm peptide at the levels of 200, 400 and 600 mg to the diet compared to the control group was able to reduce feed intake in the final period. On the other hand, treatments that used antibiotics, compared to treatment 5, which contained 400 mg of superworm peptide, were able to reduce the total bacterial population. Adding all levels of bioactive superworm peptide to the diet reduced the crypt diameter compared to the control group and also the diet containing 400 mg of the superworm peptide reduced the crypt depth compared to the control group. The results obtained in relation to immune factors can be stated that by adding antibiotics to the diet, it can increase immune factors such as immunoglobulin G at the age of 35 days compared to the control group, as well as the superworm peptide. At a concentration of 400 and 600 mg per diet, it was able to improve the total SRBC titer at 42 days of age compared to the control group.
Conclusion: The results of this experiment showed that the experimental treatments were able to improve the performance indices at the age of 11 to 42 days and some morphological features of the jejunum such as: crypt depth and diameter. Also, it can be said that the effect of experimental treatments on the total bacterial and lactobacilli population and the level of immunoglobulin G (day 35) and total SRBC titer (day 42) was significant.
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Type of Study: Research | Subject: تغذیه طیور
Received: 2022/05/3 | Revised: 2023/05/30 | Accepted: 2022/06/13 | Published: 2023/05/30

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