Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days
In this trial, a 3 × 2 factorial design with different dietary crude protein levels (CP, 17, 19 and 21%) and two levels of exogenous protease (0 and 30,000 IU/kg) was used. A total of 540 two-week old broilers (Ross-308) was randomly allocated to experimental diets over 15–28 days of age. The intera...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/2076-2615/11/9/2499 |
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| author | Abdul Jabbar Muhammad Tahir Ibrahim A. Alhidary Mutassim A. Abdelrahman Hani Albadani Rifat Ullah Khan Maria Selvaggi Vito Laudadio Vincenzo Tufarelli |
| author_facet | Abdul Jabbar Muhammad Tahir Ibrahim A. Alhidary Mutassim A. Abdelrahman Hani Albadani Rifat Ullah Khan Maria Selvaggi Vito Laudadio Vincenzo Tufarelli |
| author_sort | Abdul Jabbar |
| collection | DOAJ |
| description | In this trial, a 3 × 2 factorial design with different dietary crude protein levels (CP, 17, 19 and 21%) and two levels of exogenous protease (0 and 30,000 IU/kg) was used. A total of 540 two-week old broilers (Ross-308) was randomly allocated to experimental diets over 15–28 days of age. The interaction between dietary protein levels and enzyme supplementation showed that body weight gain was significantly (<i>p</i> < 0.05) higher in birds fed CP-19 (1114.7 g) and CP-21 (1108.8 g) with enzymes supplementation. Feed intake was higher (<i>p</i> < 0.05) in broilers fed with CP-17 than CP-19 with supplementation of the protease enzyme. Results also revealed that the feed conversion ratio (FCR) was significantly (<i>p</i> < 0.05) improved in birds fed with CP-19 and CP-21 and protease supplementation. Total tract N retention was lower (<i>p</i> < 0.05) in birds fed CP-17 with no enzyme than the other dietary groups. Similarly, the gross energy (GE) was significantly (<i>p</i> < 0.05) lower in birds fed CP-17 with or without the protease enzyme. Abdominal fat was higher (<i>p</i> < 0.05) in CP-17 (0.96%) without the protease enzyme. It was concluded that a diet at 19% CP with the protease enzyme improved the performance and nutrient digestibility in broilers over 15–28 days. |
| first_indexed | 2024-03-10T07:57:42Z |
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| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T07:57:42Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-01f777ca23a64fabbf0e857bc70cdfa52023-11-22T11:41:02ZengMDPI AGAnimals2076-26152021-08-01119249910.3390/ani11092499Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 DaysAbdul Jabbar0Muhammad Tahir1Ibrahim A. Alhidary2Mutassim A. Abdelrahman3Hani Albadani4Rifat Ullah Khan5Maria Selvaggi6Vito Laudadio7Vincenzo Tufarelli8Department of Animal Nutrition, Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture, Peshawar 25000, PakistanDepartment of Animal Nutrition, Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture, Peshawar 25000, PakistanDepartment of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh 11414, Saudi ArabiaDepartment of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh 11414, Saudi ArabiaDepartment of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh 11414, Saudi ArabiaDepartment of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh 11414, Saudi ArabiaDepartment of Agricultural and Environmental Science, University of Bari “Aldo Moro”, 70125 Bari, ItalyDepartment of DETO, Section of Veterinary Science and Animal Production, University of Bari “Aldo Moro”, 70010 Bari, ItalyDepartment of DETO, Section of Veterinary Science and Animal Production, University of Bari “Aldo Moro”, 70010 Bari, ItalyIn this trial, a 3 × 2 factorial design with different dietary crude protein levels (CP, 17, 19 and 21%) and two levels of exogenous protease (0 and 30,000 IU/kg) was used. A total of 540 two-week old broilers (Ross-308) was randomly allocated to experimental diets over 15–28 days of age. The interaction between dietary protein levels and enzyme supplementation showed that body weight gain was significantly (<i>p</i> < 0.05) higher in birds fed CP-19 (1114.7 g) and CP-21 (1108.8 g) with enzymes supplementation. Feed intake was higher (<i>p</i> < 0.05) in broilers fed with CP-17 than CP-19 with supplementation of the protease enzyme. Results also revealed that the feed conversion ratio (FCR) was significantly (<i>p</i> < 0.05) improved in birds fed with CP-19 and CP-21 and protease supplementation. Total tract N retention was lower (<i>p</i> < 0.05) in birds fed CP-17 with no enzyme than the other dietary groups. Similarly, the gross energy (GE) was significantly (<i>p</i> < 0.05) lower in birds fed CP-17 with or without the protease enzyme. Abdominal fat was higher (<i>p</i> < 0.05) in CP-17 (0.96%) without the protease enzyme. It was concluded that a diet at 19% CP with the protease enzyme improved the performance and nutrient digestibility in broilers over 15–28 days.https://www.mdpi.com/2076-2615/11/9/2499broilerproteasedietary proteingrowthnutrient utilization |
| spellingShingle | Abdul Jabbar Muhammad Tahir Ibrahim A. Alhidary Mutassim A. Abdelrahman Hani Albadani Rifat Ullah Khan Maria Selvaggi Vito Laudadio Vincenzo Tufarelli Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days Animals broiler protease dietary protein growth nutrient utilization |
| title | Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days |
| title_full | Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days |
| title_fullStr | Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days |
| title_full_unstemmed | Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days |
| title_short | Impact of Microbial Protease Enzyme and Dietary Crude Protein Levels on Growth and Nutrients Digestibility in Broilers over 15–28 Days |
| title_sort | impact of microbial protease enzyme and dietary crude protein levels on growth and nutrients digestibility in broilers over 15 28 days |
| topic | broiler protease dietary protein growth nutrient utilization |
| url | https://www.mdpi.com/2076-2615/11/9/2499 |
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