Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density
The present study was conducted to investigate the effects of dietary omega-3 fatty acids in broiler chickens exposed to high stocking density (SD) on growth performance, carcass characteristics, breast meat quality, blood biochemical indices, nutrient digestibility and litter quality. A total of 42...
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Elsevier
2025-01-01
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| Series: | Poultry Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579124010460 |
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| author | Shahgol Rahbari Abdolreza Salehi Seyed Davood Sharifi Shirin Honarbakhsh |
| author_facet | Shahgol Rahbari Abdolreza Salehi Seyed Davood Sharifi Shirin Honarbakhsh |
| author_sort | Shahgol Rahbari |
| collection | DOAJ |
| description | The present study was conducted to investigate the effects of dietary omega-3 fatty acids in broiler chickens exposed to high stocking density (SD) on growth performance, carcass characteristics, breast meat quality, blood biochemical indices, nutrient digestibility and litter quality. A total of 420 one-day-old broilers were used in 2 × 2 factorial arrangements with 2 levels of SD (low: 9 birds/ m2 and high: 17 birds/ m2) and 2 levels of omega-3 fatty acids (low and high omega-3; 0.057 and 0.5% of the diet, respectively) in a completely randomized design with 5 replicates for each treatment. Live body weight (LBW), feed intake (FI), and feed conversion ratio (FCR) were recorded periodically. The apparent metabolizable energy (AME), digestibility of crude protein (CP), organic matter (OM), and lipid of experimental diets, were measured from days 30 to 37 of age. The results showed that body weight gain (BWG) and FCR was improved (P < 0.05) in high SD broilers during the grower phase (days 15–24).The BWG of broilers under high SD and dietary omega-3 fatty acids was higher than others (P < 0.05) during the finisher phase (d 25-40). Carcass and total heart weight were higher in birds fed diets containing omega-3 fatty acids under high SD than in birds fed a diet low in omega-3 fatty acids at low or high SD (P < 0.05). The serum concentration of cholesterol in broilers with high SD fed diets high in omega-3 fatty acids was lower than broilers with high SD fed diets low in omega-3 fatty acids (P < 0.05). High SD decreased AME and CP digestibility (P < 0.05). Dietary omega-3 fatty acids, increased AME and digestibility of OM and lipid (P < 0.05). In broiler chickens raised at low stocking density, feeding a high-omega-3 diet reduced litter nitrogen levels compared to feeding a low omega-3 diet (P < 0.05). In summary, omega-3 fatty acid may have the potential to reduce negative effects of high SD on broiler production by enhancing the nutrient digestibility and litter quality. |
| format | Article |
| id | doaj-art-1c9238667c874a939eced90f5d7960b1 |
| institution | Kabale University |
| issn | 0032-5791 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Poultry Science |
| spelling | doaj-art-1c9238667c874a939eced90f5d7960b12025-01-22T05:40:11ZengElsevierPoultry Science0032-57912025-01-011041104468Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking densityShahgol Rahbari0Abdolreza Salehi1Seyed Davood Sharifi2Shirin Honarbakhsh3Department of Animal and Poultry Science, Faculty of Agricultural Technology, College of Agriculture and Natural Resources, University of Tehran, Tehran, IranDepartment of Animal and Poultry Science, Faculty of Agricultural Technology, College of Agriculture and Natural Resources, University of Tehran, Tehran, IranCorresponding author.; Department of Animal and Poultry Science, Faculty of Agricultural Technology, College of Agriculture and Natural Resources, University of Tehran, Tehran, IranDepartment of Animal and Poultry Science, Faculty of Agricultural Technology, College of Agriculture and Natural Resources, University of Tehran, Tehran, IranThe present study was conducted to investigate the effects of dietary omega-3 fatty acids in broiler chickens exposed to high stocking density (SD) on growth performance, carcass characteristics, breast meat quality, blood biochemical indices, nutrient digestibility and litter quality. A total of 420 one-day-old broilers were used in 2 × 2 factorial arrangements with 2 levels of SD (low: 9 birds/ m2 and high: 17 birds/ m2) and 2 levels of omega-3 fatty acids (low and high omega-3; 0.057 and 0.5% of the diet, respectively) in a completely randomized design with 5 replicates for each treatment. Live body weight (LBW), feed intake (FI), and feed conversion ratio (FCR) were recorded periodically. The apparent metabolizable energy (AME), digestibility of crude protein (CP), organic matter (OM), and lipid of experimental diets, were measured from days 30 to 37 of age. The results showed that body weight gain (BWG) and FCR was improved (P < 0.05) in high SD broilers during the grower phase (days 15–24).The BWG of broilers under high SD and dietary omega-3 fatty acids was higher than others (P < 0.05) during the finisher phase (d 25-40). Carcass and total heart weight were higher in birds fed diets containing omega-3 fatty acids under high SD than in birds fed a diet low in omega-3 fatty acids at low or high SD (P < 0.05). The serum concentration of cholesterol in broilers with high SD fed diets high in omega-3 fatty acids was lower than broilers with high SD fed diets low in omega-3 fatty acids (P < 0.05). High SD decreased AME and CP digestibility (P < 0.05). Dietary omega-3 fatty acids, increased AME and digestibility of OM and lipid (P < 0.05). In broiler chickens raised at low stocking density, feeding a high-omega-3 diet reduced litter nitrogen levels compared to feeding a low omega-3 diet (P < 0.05). In summary, omega-3 fatty acid may have the potential to reduce negative effects of high SD on broiler production by enhancing the nutrient digestibility and litter quality.http://www.sciencedirect.com/science/article/pii/S0032579124010460Stocking densityOmega-3 fatty acidsLitter qualityMeat qualityBroiler chickens |
| spellingShingle | Shahgol Rahbari Abdolreza Salehi Seyed Davood Sharifi Shirin Honarbakhsh Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density Poultry Science Stocking density Omega-3 fatty acids Litter quality Meat quality Broiler chickens |
| title | Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| title_full | Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| title_fullStr | Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| title_full_unstemmed | Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| title_short | Dietary omega-3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| title_sort | dietary omega 3 fatty acids affect the growth performance of broiler chickens reared at high stocking density |
| topic | Stocking density Omega-3 fatty acids Litter quality Meat quality Broiler chickens |
| url | http://www.sciencedirect.com/science/article/pii/S0032579124010460 |
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