Influence of pre-slaughter fasting time on weight loss, meat quality and carcass contamination in broilers

Xue, Ge; Cheng, Si; Yin, Jingwen; Zhang, Runxiang; Su, Yingying; Li, Xiang; Bao, Jun

doi:10.5713/ajas.20.0560

Cited by 10 publications

(10 citation statements)

References 29 publications

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“…The drip loss of raw meat for 24 h after storage was measured by the plastic bag method: about 30 g of muscle was obtained and hung in a plastic bag, stored at 4 °C for 24 h, then wiped with absorbent paper and weighed again. The difference in weight corresponded to the drip loss and was expressed as a percentage of the initial muscle weight [ 21 ]. Based on previous studies, muscle cooking loss was measured by the cooking method.…”

Section: Methodsmentioning

confidence: 99%

Effect of Cardamine violifolia on Plasma Biochemical Parameters, Anti-Oxidative Capacity, Intestinal Morphology, and Meat Quality of Broilers Challenged with Lipopolysaccharide

Gao²,

Jing

et al. 2022

Animals

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Cardamine violifolia is a newly discovered selenium (Se)-enriched plant rich in MeSeCys and SeCys and has a strong antioxidant capacity. This study aimed to investigate the effects of Cardamine violifolia on plasma biochemical indices, antioxidant levels, intestinal morphology, and meat quality of broilers under acute LPS-induced oxidative stress by comparing it with inorganic Se (sodaium selenite). A total of 240 one-day-old Ross 308 broilers were fed a basal diet and divided into four groups: (1) SeNa-SS, fed a diet supplied with 0.3 mg/kg Se from sodium selenite, and injected with 0.9% sterile saline, (2) SeCv-SS, fed a diet supplied with 0.3 mg/kg Se from Cardamine violifolia, and injected with 0.9% sterile saline, (3) SeNa-LPS, fed a diet supplied with 0.3 mg/kg Se from sodium selenite, and injected with 0.5 mg/kg LPS, (4) SeCv-LPS, fed a diet supplied with 0.3 mg/kg Se from Cardamine violifolia and injected with 0.5 mg/kg LPS. The experiment lasted for 42 days. Sterile saline or LPS was injected intraperitoneally two hours before slaughter, and blood and tissue samples were collected for testing. The results showed that compared with SeNa, SeCv significantly reduced the plasma levels of aspartate aminotransferase, alanine aminotransferase, and urea nitrogen after LPS challenge (p < 0.05), and increased the plasma levels of total antioxidant capacity and glutathione peroxidase, decreased malondialdehyde content in LPS-challenged broilers (p < 0.05). In addition, compared with SeNa, SeCv supplementation increased villus height and the ratio of villus height to crypt depth of jejunum and ileum after LPS challenge (p < 0.05). Additionally, SeCv could increase the redness of breast and thigh muscle, and decrease drip loss, cooking loss, and shear force (p < 0.05). In conclusion, our results indicated that supplementing with 0.3 mg/kg Se from Cardamine violifolia alleviated tissue injury after LPS challenge, increased antioxidant capacity, and improved meat quality of breast and thigh muscle after stress.

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Section: Methodsmentioning

confidence: 99%

Effect of Cardamine violifolia on Plasma Biochemical Parameters, Anti-Oxidative Capacity, Intestinal Morphology, and Meat Quality of Broilers Challenged with Lipopolysaccharide

Gao²,

Jing

et al. 2022

Animals

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“…Fasting causes body weight loss mainly due to three reasons: the excretion of intestinal contents, the loss of muscles’ water, and the oxidation metabolism of nutrients for energy supply [ 1 , 22 ]. Fasting for 6 to 10 h resulted in reducing the likelihood of carcass of broilers, mainly due to the excretion of intestinal contents [ 11 ]. The body weight loss is slightly slower from 12 to 20 hours of fasting, mainly due to metabolic activity and water loss.…”

Section: Discussionmentioning

confidence: 99%

“…It is common practice to fast broilers for several hours before slaughter [6][7][8]. Fasting can empty the chyme in the digestive tract of animals, reduce the possibility of carcass contamination by feces during slaughter, and also reduce transportation stress and mortality [9][10][11]. Too short or unrestrained fasting time will lead to waste of feed taken several hours before slaughter and increase transport stress [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers

Wu,

Zhou,

et al. 2024

Anim Biosci

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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 preslaughter 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), pH<sub>45 min</sub> (p<0.01) and pH<sub>24 h</sub> (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.

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“…Meat color (lightness, L* ; redness, a* ; and yellowness, b* ) was measured by a Chromameter (CR-410, Konica Minota, Tokyo, Japan) according to a previous study [ 14 ]. Drip loss was determined using the plastic bag method according to a previous study [ 15 ]. Briefly, about 30 g of muscle sample was weighed and set in a sealed plastic bag kept for 24 h at 4 °C.…”

Section: Methodsmentioning

confidence: 99%

Dietary Se-Enriched Cardamine enshiensis Supplementation Alleviates Transport-Stress-Induced Body Weight Loss, Anti-Oxidative Capacity and Meat Quality Impairments of Broilers

Zhu

et al. 2022

Animals

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The aim of this experiment was to explore the effects of a new selenium (Se) source from Se-enriched Cardamine enshiensis (SeCe) on body weight loss, anti-oxidative capacity and meat quality of broilers under transport stress. A total of 240 one-day-old ROSS 308 broilers were allotted into four treatments with six replicate cages and 10 birds per cage using a 2 × 2 factorial design. The four groups were as follows: (1) Na2SeO3-NTS group, dietary 0.3 mg/kg Se from Na2SeO3 without transport stress, (2) SeCe-NTS group, dietary 0.3 mg/kg Se from SeCe without transport stress, (3) Na2SeO3-TS group, dietary 0.3 mg/kg Se from Na2SeO3 with transport stress, and (4) SeCe-TS group, dietary 0.3 mg/kg Se from SeCe with transport stress. After a 42 d feeding period, the broilers were transported by a lorry or kept in the original cages for 3 h, respectively. The results showed that dietary SeCe supplementation alleviated transport-stress-induced body weight loss and hepatomegaly of the broilers compared with the broilers fed Na2SeO3 diets (p < 0.05). Furthermore, dietary SeCe supplementation increased the concentrations of plasma total protein and glucose, and decreased the activities of aspartate aminotransferase and alanine aminotransferase of the broilers under transport stress (p < 0.05). Dietary SeCe supplementation also enhanced the anti-oxidative capacity and meat quality in the breast and thigh muscles of the broilers under transport stress (p < 0.05). In summary, compared with Na2SeO3, dietary SeCe supplementation alleviates transport-stress-induced body weight loss, anti-oxidative capacity and meat quality impairments of broilers.

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Influence of pre-slaughter fasting time on weight loss, meat quality and carcass contamination in broilers

Cited by 10 publications

References 29 publications

Effect of Cardamine violifolia on Plasma Biochemical Parameters, Anti-Oxidative Capacity, Intestinal Morphology, and Meat Quality of Broilers Challenged with Lipopolysaccharide

Effect of Cardamine violifolia on Plasma Biochemical Parameters, Anti-Oxidative Capacity, Intestinal Morphology, and Meat Quality of Broilers Challenged with Lipopolysaccharide

Effect of pre-slaughter fasting time on carcass yield, blood parameters and meat quality in broilers

Dietary Se-Enriched Cardamine enshiensis Supplementation Alleviates Transport-Stress-Induced Body Weight Loss, Anti-Oxidative Capacity and Meat Quality Impairments of Broilers

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