Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal
ABSTRACT: The objective of this study was to assess the effects of dietary supplementation of keratinase on the production of broilers fed a diet containing feather meal. A total of 162 1-d-old Cobb 500 male broiler (n = 9 cages/diet with 6 chicks/cage) were randomly allocated to 3 dietary treatment...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Poultry Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579122002061 |
| _version_ | 1817976511027740672 |
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| author | Kai-Lin Xu Guo-Xin Gong Miao Liu Lu Yang Ze-Jing Xu Si Gao Meng-Yi Xiao Tao Ren Bing-Ji Zhao Mahmoud M. Khalil Ling Zhao Lv-Hui Sun |
| author_facet | Kai-Lin Xu Guo-Xin Gong Miao Liu Lu Yang Ze-Jing Xu Si Gao Meng-Yi Xiao Tao Ren Bing-Ji Zhao Mahmoud M. Khalil Ling Zhao Lv-Hui Sun |
| author_sort | Kai-Lin Xu |
| collection | DOAJ |
| description | ABSTRACT: The objective of this study was to assess the effects of dietary supplementation of keratinase on the production of broilers fed a diet containing feather meal. A total of 162 1-d-old Cobb 500 male broiler (n = 9 cages/diet with 6 chicks/cage) were randomly allocated to 3 dietary treatments. The broilers were fed a corn-soybean-feather meal based diet (BD), or BD supplemented with keratinase at 100,000 or 200,000 U/kg for 6 weeks. Compared to the control, dietary supplementation with 200,000 U/kg keratinase increased (P < 0.05) body weight gain (3.6–4.3%) and reduced feed conversion ratio (2.4–5.6%) during the various experimental periods, and also improved (P < 0.05) apparent total tract digestibility of ash and calcium by 45.0% and 8.8%, respectively. Meanwhile, dietary supplementation of keratinase at 100,000 U/kg reduced (P < 0.05) the drip loss (29.2%), while 200,000 U/kg keratinase supplementation increased (P < 0.05) the pH value (1.6%) at 45 min and decreased (P < 0.05) the lightness (L* value; 13.6%) and drip loss (22.1%) of pectoral muscle. Moreover, dietary supplementation of keratinase at both levels of 100,000 and 200,000 U/kg increased (P < 0.05) Glutathione peroxidase activity (82.5–87.5%) and decreased the Malondialdehyde concentration (14.5–18.3%) in the pectoral muscle. In conclusion, dietary supplementation of keratinase at 200,000 U/kg can improve the performance, meat quality, apparent total tract digestibility of nutrients, and redox status of broiler chickens fed a diet containing feather meal. |
| first_indexed | 2024-04-13T22:04:33Z |
| format | Article |
| id | doaj.art-ddcf3bddea6a45e6b9e9b0faf14ca024 |
| institution | Directory Open Access Journal |
| issn | 0032-5791 |
| language | English |
| last_indexed | 2024-04-13T22:04:33Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj.art-ddcf3bddea6a45e6b9e9b0faf14ca0242022-12-22T02:28:00ZengElsevierPoultry Science0032-57912022-06-011016101913Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather mealKai-Lin Xu0Guo-Xin Gong1Miao Liu2Lu Yang3Ze-Jing Xu4Si Gao5Meng-Yi Xiao6Tao Ren7Bing-Ji Zhao8Mahmoud M. Khalil9Ling Zhao10Lv-Hui Sun11Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaHubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaHubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDemonstration Center of Hubei Province for Experimental Animal Science Education, Huazhong Agricultural University, Wuhan 430070, ChinaHubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaWuhan Technology Institute of Industrial Holding, Wuhan 430019, ChinaWuhan Technology Institute of Industrial Holding, Wuhan 430019, ChinaMonogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New ZealandHubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Corresponding author.Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaABSTRACT: The objective of this study was to assess the effects of dietary supplementation of keratinase on the production of broilers fed a diet containing feather meal. A total of 162 1-d-old Cobb 500 male broiler (n = 9 cages/diet with 6 chicks/cage) were randomly allocated to 3 dietary treatments. The broilers were fed a corn-soybean-feather meal based diet (BD), or BD supplemented with keratinase at 100,000 or 200,000 U/kg for 6 weeks. Compared to the control, dietary supplementation with 200,000 U/kg keratinase increased (P < 0.05) body weight gain (3.6–4.3%) and reduced feed conversion ratio (2.4–5.6%) during the various experimental periods, and also improved (P < 0.05) apparent total tract digestibility of ash and calcium by 45.0% and 8.8%, respectively. Meanwhile, dietary supplementation of keratinase at 100,000 U/kg reduced (P < 0.05) the drip loss (29.2%), while 200,000 U/kg keratinase supplementation increased (P < 0.05) the pH value (1.6%) at 45 min and decreased (P < 0.05) the lightness (L* value; 13.6%) and drip loss (22.1%) of pectoral muscle. Moreover, dietary supplementation of keratinase at both levels of 100,000 and 200,000 U/kg increased (P < 0.05) Glutathione peroxidase activity (82.5–87.5%) and decreased the Malondialdehyde concentration (14.5–18.3%) in the pectoral muscle. In conclusion, dietary supplementation of keratinase at 200,000 U/kg can improve the performance, meat quality, apparent total tract digestibility of nutrients, and redox status of broiler chickens fed a diet containing feather meal.http://www.sciencedirect.com/science/article/pii/S0032579122002061keratinasefeather mealperformancemeat qualitybroilers |
| spellingShingle | Kai-Lin Xu Guo-Xin Gong Miao Liu Lu Yang Ze-Jing Xu Si Gao Meng-Yi Xiao Tao Ren Bing-Ji Zhao Mahmoud M. Khalil Ling Zhao Lv-Hui Sun Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal Poultry Science keratinase feather meal performance meat quality broilers |
| title | Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal |
| title_full | Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal |
| title_fullStr | Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal |
| title_full_unstemmed | Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal |
| title_short | Keratinase improves the growth performance, meat quality and redox status of broiler chickens fed a diet containing feather meal |
| title_sort | keratinase improves the growth performance meat quality and redox status of broiler chickens fed a diet containing feather meal |
| topic | keratinase feather meal performance meat quality broilers |
| url | http://www.sciencedirect.com/science/article/pii/S0032579122002061 |
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