A 42-day trial was conducted to assess the effects of a dietary protease on growth performance and ileum population of selected bacteria in broiler chickens fed standard diets and diets deficient in crude protein and digestible amino acids (CP/AA, ~5%) or apparent metabolizable energy (AME, 50 kcal/kg) or both. Reducing CP/AA and AME negatively affected average daily weight gain (ADG, P < 0.05) and feed conversion ratio (FCR, P < 0.05). Dietary protease improved BW at 42-d (P = 0.021, linear effect) of birds fed both standard and nutrient deficient diets but improved FCR (P = 0.0002) was only observed when supplemented to the standard diet. Serum protein concentration was not affected by the level of CP/AA and AME but decreased linearly with the level of protease (P = 0.02). Numbers of Escherichia coli¸ Salmonella spp. and Clostridium perfringens increased (P = 0.0001) with the decrease of dietary CP/AA and AME. In contrast, the numbers of studied bacteria linearly decreased (P = 0.0001) with dietary protease level. Dietary protease was found to decrease the numbers of Clostridium perfringens (P = 0.0001) when supplemented to either low CP/AA or low AME diets. It can be concluded that protease supplementation sustained the harvesting biomass in the experimental birds fed lower nutrient density diets and decreased the numbers of resident bacteria in the hind gut, some of which might be potential pathogens. Hence, the study documented not only the nutrient sparing effects but also the extra-proteinaceous effect in terms of gut health of dietary protease in broiler chickens.
Published in | Animal and Veterinary Sciences (Volume 9, Issue 1) |
DOI | 10.11648/j.avs.20210901.13 |
Page(s) | 16-23 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Protease, Amino Acids, Growth Performance, Microbiota, Broiler
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APA Style
Mohiuddin Amirul Kabir Chowdhury, Amrita Kumar Dhara, Shivaji Dey, Anirvid Sarkar, Sudipto Haldar, et al. (2021). Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens. Animal and Veterinary Sciences, 9(1), 16-23. https://doi.org/10.11648/j.avs.20210901.13
ACS Style
Mohiuddin Amirul Kabir Chowdhury; Amrita Kumar Dhara; Shivaji Dey; Anirvid Sarkar; Sudipto Haldar, et al. Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens. Anim. Vet. Sci. 2021, 9(1), 16-23. doi: 10.11648/j.avs.20210901.13
AMA Style
Mohiuddin Amirul Kabir Chowdhury, Amrita Kumar Dhara, Shivaji Dey, Anirvid Sarkar, Sudipto Haldar, et al. Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens. Anim Vet Sci. 2021;9(1):16-23. doi: 10.11648/j.avs.20210901.13
@article{10.11648/j.avs.20210901.13, author = {Mohiuddin Amirul Kabir Chowdhury and Amrita Kumar Dhara and Shivaji Dey and Anirvid Sarkar and Sudipto Haldar and Glenmer Bathan Tactacan}, title = {Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens}, journal = {Animal and Veterinary Sciences}, volume = {9}, number = {1}, pages = {16-23}, doi = {10.11648/j.avs.20210901.13}, url = {https://doi.org/10.11648/j.avs.20210901.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.avs.20210901.13}, abstract = {A 42-day trial was conducted to assess the effects of a dietary protease on growth performance and ileum population of selected bacteria in broiler chickens fed standard diets and diets deficient in crude protein and digestible amino acids (CP/AA, ~5%) or apparent metabolizable energy (AME, 50 kcal/kg) or both. Reducing CP/AA and AME negatively affected average daily weight gain (ADG, P P P = 0.021, linear effect) of birds fed both standard and nutrient deficient diets but improved FCR (P = 0.0002) was only observed when supplemented to the standard diet. Serum protein concentration was not affected by the level of CP/AA and AME but decreased linearly with the level of protease (P = 0.02). Numbers of Escherichia coli¸ Salmonella spp. and Clostridium perfringens increased (P = 0.0001) with the decrease of dietary CP/AA and AME. In contrast, the numbers of studied bacteria linearly decreased (P = 0.0001) with dietary protease level. Dietary protease was found to decrease the numbers of Clostridium perfringens (P = 0.0001) when supplemented to either low CP/AA or low AME diets. It can be concluded that protease supplementation sustained the harvesting biomass in the experimental birds fed lower nutrient density diets and decreased the numbers of resident bacteria in the hind gut, some of which might be potential pathogens. Hence, the study documented not only the nutrient sparing effects but also the extra-proteinaceous effect in terms of gut health of dietary protease in broiler chickens.}, year = {2021} }
TY - JOUR T1 - Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens AU - Mohiuddin Amirul Kabir Chowdhury AU - Amrita Kumar Dhara AU - Shivaji Dey AU - Anirvid Sarkar AU - Sudipto Haldar AU - Glenmer Bathan Tactacan Y1 - 2021/03/17 PY - 2021 N1 - https://doi.org/10.11648/j.avs.20210901.13 DO - 10.11648/j.avs.20210901.13 T2 - Animal and Veterinary Sciences JF - Animal and Veterinary Sciences JO - Animal and Veterinary Sciences SP - 16 EP - 23 PB - Science Publishing Group SN - 2328-5850 UR - https://doi.org/10.11648/j.avs.20210901.13 AB - A 42-day trial was conducted to assess the effects of a dietary protease on growth performance and ileum population of selected bacteria in broiler chickens fed standard diets and diets deficient in crude protein and digestible amino acids (CP/AA, ~5%) or apparent metabolizable energy (AME, 50 kcal/kg) or both. Reducing CP/AA and AME negatively affected average daily weight gain (ADG, P P P = 0.021, linear effect) of birds fed both standard and nutrient deficient diets but improved FCR (P = 0.0002) was only observed when supplemented to the standard diet. Serum protein concentration was not affected by the level of CP/AA and AME but decreased linearly with the level of protease (P = 0.02). Numbers of Escherichia coli¸ Salmonella spp. and Clostridium perfringens increased (P = 0.0001) with the decrease of dietary CP/AA and AME. In contrast, the numbers of studied bacteria linearly decreased (P = 0.0001) with dietary protease level. Dietary protease was found to decrease the numbers of Clostridium perfringens (P = 0.0001) when supplemented to either low CP/AA or low AME diets. It can be concluded that protease supplementation sustained the harvesting biomass in the experimental birds fed lower nutrient density diets and decreased the numbers of resident bacteria in the hind gut, some of which might be potential pathogens. Hence, the study documented not only the nutrient sparing effects but also the extra-proteinaceous effect in terms of gut health of dietary protease in broiler chickens. VL - 9 IS - 1 ER -