Early-age heat exposure improved growth performance and heat tolerance in broilers
ABSTRACT: A total of 440 one-day-old healthy male Arbor Acres broilers were equally assigned to a control group (CTL) and an early-age high-temperature exposure (EHT) group (4 replicates per group, 55 chickens per replicate). At d 3, the broilers in CTL group were reared in the normal temperature 33...
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Elsevier
2024-12-01
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| Series: | Poultry Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579124008332 |
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| author | Y.S. Liu T.J. Lv H. Lin H.C. Jiao X.J. Wang L. Liu |
| author_facet | Y.S. Liu T.J. Lv H. Lin H.C. Jiao X.J. Wang L. Liu |
| author_sort | Y.S. Liu |
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| description | ABSTRACT: A total of 440 one-day-old healthy male Arbor Acres broilers were equally assigned to a control group (CTL) and an early-age high-temperature exposure (EHT) group (4 replicates per group, 55 chickens per replicate). At d 3, the broilers in CTL group were reared in the normal temperature 33 ± 1°C, while the broilers in EHT group were exposed to 36 ± 1°C for 24 h. At d 43, all broilers were treated with an acute high temperature 35 ± 1°C for 5 h. The results showed that average daily gain in EHT group was decreased at d 3, but average daily gain in EHT group was increased at d 36 to 42 (P < 0.05). Plasma GLU level in EHT group was lower in broilers at d 7 or facing subsequently high temperature for 5 h (P < 0.05). The relative expression of myogenic differentiation (MyoD) gene in pectoralis major and myogenic factor 5 (Myf5) gene in biceps femoris were significantly improved at d 42 after early-age heat exposure (P < 0.05). Broilers in EHT group have a higher temperature tolerance with a lower mortality than control broilers (P < 0.05). Broilers in EHT group have a lower rectal temperature and a higher comb and ear temperature when facing subsequently acute high temperature than control broilers (P < 0.05). In addition, our study demonstrated that early-age heat exposure significantly decreased the mortality and increased the heat tolerance of broilers when facing an acute short-term heat exposures. Early-age heat exposure increased the process of myogenesis via up-regulating the MyoD and Myf5 gene expression in skeletal muscle, which accelerated average daily gain. |
| format | Article |
| id | doaj-art-c3e719c8e6e54e61b2802ab3239d4244 |
| institution | OA Journals |
| issn | 0032-5791 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj-art-c3e719c8e6e54e61b2802ab3239d42442025-08-20T01:55:27ZengElsevierPoultry Science0032-57912024-12-011031210425410.1016/j.psj.2024.104254Early-age heat exposure improved growth performance and heat tolerance in broilersY.S. Liu0T.J. Lv1H. Lin2H.C. Jiao3X.J. Wang4L. Liu5Department of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, China; Department of Technology, Shandong Haiding Agriculture and Animal Husbandry Co. Ltd., Jinan City, Shandong Province, 250113, ChinaDepartment of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, ChinaDepartment of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, ChinaDepartment of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, ChinaDepartment of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, ChinaDepartment of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shandong Provincial Key Laboratory of Animal Nutrition and Efficient Feeding, Shandong Agricultural University, Tai'an City, Shandong Province, 271018, China; Corresponding author:ABSTRACT: A total of 440 one-day-old healthy male Arbor Acres broilers were equally assigned to a control group (CTL) and an early-age high-temperature exposure (EHT) group (4 replicates per group, 55 chickens per replicate). At d 3, the broilers in CTL group were reared in the normal temperature 33 ± 1°C, while the broilers in EHT group were exposed to 36 ± 1°C for 24 h. At d 43, all broilers were treated with an acute high temperature 35 ± 1°C for 5 h. The results showed that average daily gain in EHT group was decreased at d 3, but average daily gain in EHT group was increased at d 36 to 42 (P < 0.05). Plasma GLU level in EHT group was lower in broilers at d 7 or facing subsequently high temperature for 5 h (P < 0.05). The relative expression of myogenic differentiation (MyoD) gene in pectoralis major and myogenic factor 5 (Myf5) gene in biceps femoris were significantly improved at d 42 after early-age heat exposure (P < 0.05). Broilers in EHT group have a higher temperature tolerance with a lower mortality than control broilers (P < 0.05). Broilers in EHT group have a lower rectal temperature and a higher comb and ear temperature when facing subsequently acute high temperature than control broilers (P < 0.05). In addition, our study demonstrated that early-age heat exposure significantly decreased the mortality and increased the heat tolerance of broilers when facing an acute short-term heat exposures. Early-age heat exposure increased the process of myogenesis via up-regulating the MyoD and Myf5 gene expression in skeletal muscle, which accelerated average daily gain.http://www.sciencedirect.com/science/article/pii/S0032579124008332early-age heat exposureproduction performanceheat tolerancebroiler |
| spellingShingle | Y.S. Liu T.J. Lv H. Lin H.C. Jiao X.J. Wang L. Liu Early-age heat exposure improved growth performance and heat tolerance in broilers Poultry Science early-age heat exposure production performance heat tolerance broiler |
| title | Early-age heat exposure improved growth performance and heat tolerance in broilers |
| title_full | Early-age heat exposure improved growth performance and heat tolerance in broilers |
| title_fullStr | Early-age heat exposure improved growth performance and heat tolerance in broilers |
| title_full_unstemmed | Early-age heat exposure improved growth performance and heat tolerance in broilers |
| title_short | Early-age heat exposure improved growth performance and heat tolerance in broilers |
| title_sort | early age heat exposure improved growth performance and heat tolerance in broilers |
| topic | early-age heat exposure production performance heat tolerance broiler |
| url | http://www.sciencedirect.com/science/article/pii/S0032579124008332 |
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