Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers
Objective The aim of this study was to evaluate the effect of pre-slaughter fasting time on carcass yield, meat quality, blood parameters and glucose metabolism in broilers. Methods Four hundred and fifty Arbor Acres (AA) broilers at 42 days of age were divided into 5 groups with 6 replicates in eac...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2024-02-01
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| Series: | Animal Bioscience |
| Subjects: | |
| Online Access: | http://www.animbiosci.org/upload/pdf/ab-23-0262.pdf |
| _version_ | 1797324457423929344 |
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| author | Xuezhuang Wu Yahao Zhou Zhentao Lu Yunting Zhang Tietao Zhang |
| author_facet | Xuezhuang Wu Yahao Zhou Zhentao Lu Yunting Zhang Tietao Zhang |
| author_sort | Xuezhuang Wu |
| collection | DOAJ |
| description | Objective The aim of this study was to evaluate the effect of pre-slaughter fasting time on carcass yield, meat quality, blood parameters and glucose metabolism in broilers. Methods Four hundred and fifty Arbor Acres (AA) broilers at 42 days of age were divided into 5 groups with 6 replicates in each group and 15 chickens as one replicate. Following this period, broilers from each group were distributed among five groups according to pre-slaughter fasting period as 4, 8, 12, 16, or 20 h. Results With increasing fasting time, the carcass yield (p<0.01), the breast muscles yield (p<0.01) and the thigh yield (p<0.01) of the broilers were all linearly increased. With increasing fasting time, the L* values (p<0.01), cooking loss (p = 0.020), moisture content (p<0.01) in the leg muscles linearly downregulated, while the drip loss (p = 0.043), pH45 min (p<0.01) and pH24 h (p<0.01) were linearly upregulated. A trend for a lower (p = 0.071) shear force in the leg muscles was also observed in broilers fasted for longer time. Similar results were also found in breast muscles. The different fasting treatments did not influence the breast muscles glycogen content (p>0.10), while the increase of fasting time resulted in a linear decrease of the blood glucose (p = 0.021) and, more specifically, the glycogen content of the liver and leg muscles (p<0.001). With increasing fasting time, the aspartate transaminase (p<0.01), uric acid (p<0.01), and triglycerides (p<0.01) in serum linearly downregulated, while the alanine aminotransferase was linearly upregulated. Conclusion The results of this study show a significant influence of fasting time on carcass yield and meat quality in broilers. Moderate fasting (8 to 12 h) before slaughter can reduce the weight loss of broilers. Prolonged fasting (≥16 h) increased body weight loss, decreased slaughtering performance and fluctuating blood indexes of broilers. |
| first_indexed | 2024-03-08T05:56:24Z |
| format | Article |
| id | doaj.art-2c072a603e674c96b13f23290d8f7aec |
| institution | Directory Open Access Journal |
| issn | 2765-0189 2765-0235 |
| language | English |
| last_indexed | 2024-03-08T05:56:24Z |
| publishDate | 2024-02-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Animal Bioscience |
| spelling | doaj.art-2c072a603e674c96b13f23290d8f7aec2024-02-05T00:49:44ZengAsian-Australasian Association of Animal Production SocietiesAnimal Bioscience2765-01892765-02352024-02-0137231532210.5713/ab.23.026225135Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilersXuezhuang Wu0Yahao Zhou1Zhentao Lu2Yunting Zhang3Tietao Zhang4 College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, China Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, ChinaObjective The aim of this study was to evaluate the effect of pre-slaughter fasting time on carcass yield, meat quality, blood parameters and glucose metabolism in broilers. Methods Four hundred and fifty Arbor Acres (AA) broilers at 42 days of age were divided into 5 groups with 6 replicates in each group and 15 chickens as one replicate. Following this period, broilers from each group were distributed among five groups according to pre-slaughter fasting period as 4, 8, 12, 16, or 20 h. Results With increasing fasting time, the carcass yield (p<0.01), the breast muscles yield (p<0.01) and the thigh yield (p<0.01) of the broilers were all linearly increased. With increasing fasting time, the L* values (p<0.01), cooking loss (p = 0.020), moisture content (p<0.01) in the leg muscles linearly downregulated, while the drip loss (p = 0.043), pH45 min (p<0.01) and pH24 h (p<0.01) were linearly upregulated. A trend for a lower (p = 0.071) shear force in the leg muscles was also observed in broilers fasted for longer time. Similar results were also found in breast muscles. The different fasting treatments did not influence the breast muscles glycogen content (p>0.10), while the increase of fasting time resulted in a linear decrease of the blood glucose (p = 0.021) and, more specifically, the glycogen content of the liver and leg muscles (p<0.001). With increasing fasting time, the aspartate transaminase (p<0.01), uric acid (p<0.01), and triglycerides (p<0.01) in serum linearly downregulated, while the alanine aminotransferase was linearly upregulated. Conclusion The results of this study show a significant influence of fasting time on carcass yield and meat quality in broilers. Moderate fasting (8 to 12 h) before slaughter can reduce the weight loss of broilers. Prolonged fasting (≥16 h) increased body weight loss, decreased slaughtering performance and fluctuating blood indexes of broilers.http://www.animbiosci.org/upload/pdf/ab-23-0262.pdfbroilerscarcass yieldfastingglucose metabolismmeat quality |
| spellingShingle | Xuezhuang Wu Yahao Zhou Zhentao Lu Yunting Zhang Tietao Zhang Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers Animal Bioscience broilers carcass yield fasting glucose metabolism meat quality |
| title | Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers |
| title_full | Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers |
| title_fullStr | Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers |
| title_full_unstemmed | Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers |
| title_short | Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers |
| title_sort | effect of pre slaughter fasting time on carcass yield blood parameters and meat quality in broilers |
| topic | broilers carcass yield fasting glucose metabolism meat quality |
| url | http://www.animbiosci.org/upload/pdf/ab-23-0262.pdf |
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