Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers
ABSTRACT: This study aimed to investigate the effect of metabolizable energy (ME) levels and exogenous emulsifier supplementation on growth performance, apparent ileal digestibility (AID), body composition, and carcass yield in broilers. The experiment was designed as a 2 × 2 factorial arrangement...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Poultry Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579123000354 |
| _version_ | 1797854326754902016 |
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| author | Hanseo Ko Jinquan Wang Josh Wen-Cheng Chiu Woo Kyun Kim |
| author_facet | Hanseo Ko Jinquan Wang Josh Wen-Cheng Chiu Woo Kyun Kim |
| author_sort | Hanseo Ko |
| collection | DOAJ |
| description | ABSTRACT: This study aimed to investigate the effect of metabolizable energy (ME) levels and exogenous emulsifier supplementation on growth performance, apparent ileal digestibility (AID), body composition, and carcass yield in broilers. The experiment was designed as a 2 × 2 factorial arrangement with ME levels (control ME vs. reduced 100 kcal/kg ME) and exogenous emulsifier supplementation (0 vs. 0.05 %). A total of 1,000 one-day-old male Cobb 500 broilers were randomly allocated into 4 treatments with 10 replicates and 25 birds per floor pen for 42 d (starter, d 0–14; grower, d 14–28; and finisher, d 28–42). Growth performance was measured biweekly, and AID was evaluated using the indigestible indicator method during d 21 to 28. Body composition was measured at d 35 using Dual-Energy X-Ray Absorptiometry (DXA), and carcass yield was evaluated at d 42. Data were analyzed using the GLM procedure for 2-way ANOVA. Results indicated reduced ME decreased body weight gain and feed intake (P < 0.05). Exogenous emulsifier supplementation improved FCR during the finisher and overall periods (P < 0.05). Reduced ME decreased AID of dry matter (DM), fat, and gross energy (P < 0.05) but increased AID of Val (P = 0.013). Exogenous emulsifier supplementation increased AID of DM, crude protein, His, Ile, Lys, Thr, Val, Pro, Ala, and Tyr (P < 0.05). Reduced ME decreased dressing rate and the relative weight of abdominal fat (P < 0.05). DXA results indicated that reduced ME decreased bone mineral density and fat (P < 0.001) but increased bone mineral contents and muscle (P < 0.05). Therefore, a reduction of 100 kcal/kg ME in the diet had adverse effects on the growth performance and carcass characteristics, but the use of exogenous emulsifier supplementation improved growth performance and nutrient digestibility. |
| first_indexed | 2024-04-09T20:05:17Z |
| format | Article |
| id | doaj.art-57fba3bd91f541d1ad492cc01fbd05a5 |
| institution | Directory Open Access Journal |
| issn | 0032-5791 |
| language | English |
| last_indexed | 2024-04-09T20:05:17Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj.art-57fba3bd91f541d1ad492cc01fbd05a52023-04-02T06:10:49ZengElsevierPoultry Science0032-57912023-04-011024102509Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilersHanseo Ko0Jinquan Wang1Josh Wen-Cheng Chiu2Woo Kyun Kim3Department of Poultry Science, University of Georgia, Athens, GA, United StatesDepartment of Poultry Science, University of Georgia, Athens, GA, United StatesEcolex Animal Nutrition, Kuala Lumpur 42920, MalaysiaDepartment of Poultry Science, University of Georgia, Athens, GA, United States; Corresponding author.ABSTRACT: This study aimed to investigate the effect of metabolizable energy (ME) levels and exogenous emulsifier supplementation on growth performance, apparent ileal digestibility (AID), body composition, and carcass yield in broilers. The experiment was designed as a 2 × 2 factorial arrangement with ME levels (control ME vs. reduced 100 kcal/kg ME) and exogenous emulsifier supplementation (0 vs. 0.05 %). A total of 1,000 one-day-old male Cobb 500 broilers were randomly allocated into 4 treatments with 10 replicates and 25 birds per floor pen for 42 d (starter, d 0–14; grower, d 14–28; and finisher, d 28–42). Growth performance was measured biweekly, and AID was evaluated using the indigestible indicator method during d 21 to 28. Body composition was measured at d 35 using Dual-Energy X-Ray Absorptiometry (DXA), and carcass yield was evaluated at d 42. Data were analyzed using the GLM procedure for 2-way ANOVA. Results indicated reduced ME decreased body weight gain and feed intake (P < 0.05). Exogenous emulsifier supplementation improved FCR during the finisher and overall periods (P < 0.05). Reduced ME decreased AID of dry matter (DM), fat, and gross energy (P < 0.05) but increased AID of Val (P = 0.013). Exogenous emulsifier supplementation increased AID of DM, crude protein, His, Ile, Lys, Thr, Val, Pro, Ala, and Tyr (P < 0.05). Reduced ME decreased dressing rate and the relative weight of abdominal fat (P < 0.05). DXA results indicated that reduced ME decreased bone mineral density and fat (P < 0.001) but increased bone mineral contents and muscle (P < 0.05). Therefore, a reduction of 100 kcal/kg ME in the diet had adverse effects on the growth performance and carcass characteristics, but the use of exogenous emulsifier supplementation improved growth performance and nutrient digestibility.http://www.sciencedirect.com/science/article/pii/S0032579123000354broileremulsifierdigestibilityDXAgrowth performance |
| spellingShingle | Hanseo Ko Jinquan Wang Josh Wen-Cheng Chiu Woo Kyun Kim Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers Poultry Science broiler emulsifier digestibility DXA growth performance |
| title | Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers |
| title_full | Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers |
| title_fullStr | Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers |
| title_full_unstemmed | Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers |
| title_short | Effects of metabolizable energy and emulsifier supplementation on growth performance, nutrient digestibility, body composition, and carcass yield in broilers |
| title_sort | effects of metabolizable energy and emulsifier supplementation on growth performance nutrient digestibility body composition and carcass yield in broilers |
| topic | broiler emulsifier digestibility DXA growth performance |
| url | http://www.sciencedirect.com/science/article/pii/S0032579123000354 |
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