Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

Pereira, R. F.; Martins, M. R. F. B.; Mendes, Ariel Antônio; Almeida, Paz Icl; Komiyama, Cláudia Marie; Milbradt, Elisane Lenita; Fernandes, BC da S

doi:10.1590/s1516-635x2013000200007

Cited by 11 publications

(8 citation statements)

References 19 publications

(18 reference statements)

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“…had no significant impact on meat color a* and b* value of broilers, which concides with the results of Pereira et al [27]. But the conspicuous increase in L* value under floor-feed or scatter-feed after fasting for over 6 h was observed.…”

Section: A C C E P T E D a R T I C L Esupporting

confidence: 90%

“…It has been reported that when L*>53, the meat color tends to be lighter, 48<L*<51 indicates that meat color is normal and L*<46 implies that meat color tends to be dark [ 26 ]. According to previous report, shading and uniformity of meat color are primarily determined by content, distribution and chemical state of myoglobin and hemoglobin, pigment substances in muscle [ 25 ], Moreover, it also relates to light refraction, scattering and absorption within a muscle fibre [ 25 , 27 ]. Our study showed that the length of fasting had no significant impact on meat color a* and b* value of broilers, which concides with the results of Pereira et al [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

“…According to previous report, shading and uniformity of meat color are primarily determined by content, distribution and chemical state of myoglobin and hemoglobin, pigment substances in muscle [ 25 ], Moreover, it also relates to light refraction, scattering and absorption within a muscle fibre [ 25 , 27 ]. Our study showed that the length of fasting had no significant impact on meat color a* and b* value of broilers, which concides with the results of Pereira et al [ 27 ]. But the conspicuous increase in L* value under floor-feed or scatter-feed after fasting for over 6 h was observed.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2021

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Objective: An experiment was conducted to determine the appropriate fasting time prior to slaughter for broilers in floor-feed and scatter-feed mode. Methods: On 21 d of breeding, 120 Arbor Acres broilers were divided into floor-feed and scatter-feed groups, chicks from each group were further assigned to feed withdrawal treatments for 0, 4, 6, 8 and 10 h. Some resultant indicators such as carcass contamination, body weight loss, meat quality of 54day-old broilers were measured. Results: It appears that longer feed withdrawal increased weight loss, lightness, drop loss of meat but reduced pH. A significant higher weight loss and lightness for both floor-feed and scatter-feed chicks coincided after 6-10 h feed withdrawal (p<0.05). pH for breast muscle at 45 min postmortem reduced when chicks of scatter-feed were fasted 6 and 10 h, while the reduction of floor-feed group occurred only in 10 h (P < 0.05). A noticeable effect of feed withdrawal on drop loss occurred after 10 h fasting in scatter-feed of which drop loss were significantly higher than that for other groups including control (p<0.05). The change of contamination propensity revealed that 6-10 h fasting significantly reduced the likelihood of carcass contamination under both floor-feed and scatter-feed (p<0.05). Net weights of intestinal contents for gizzard were significantly reduced after feed deprived of 10 h in floor-feed and 6 and10 h in scatter-feed (p<0.05). The decrease for whole intestine occurred after floor-feed broilers have been without feed for more than 4 h, scatter-feed broilers for more than 8 h (p<0.05). Conclusion: On the premise that poultry product properties and welfare were not significantly damaged, proper fasting time could reduce carcass contamination. Current data implied that 6 h fasting were recommendable for both floor and scatter feed pre-slaughter broilers.

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Section: A C C E P T E D a R T I C L Esupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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

et al. 2021

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“…In the rest of the world, the number of hours of preslaughter fasting for animal species is variable according to the legislation of the individual countries. A preslaughter fasting period of 12 h is stipulated as the minimum time for cattle and as a maximum for broilers by the regulations of the Brazilian Ministry of Agriculture [19,20]. Prolonged feed deprivation has a negative influence on certain characteristics of meat quality and increases physiological stress parameters in lambs; for this reason, fasting for more than 24 h is not recommended [21].…”

Section: Fasting Of Animals Prior To Slaughtermentioning

confidence: 99%

Halal Criteria Versus Conventional Slaughter Technology

Abdullah

Bořilová

Steinhauserova

2019

Animals

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The halal meat industry is today a reality in many regions of the world, including the European Union. The main religious laws in the area of halal meat production were legislated in ancient times and may be unchangeable due to their sanctity perceived by faithful Muslims, while the modern technology used in the meat industry is constantly evolving and being updated. The objective of this study is to highlight the points of controversy between the principles of halal and the technological means currently used in the meat industry. Modern slaughter practices, including animal fasting prior to slaughter, animal body position, the location of the incision during slaughter, stunning and mechanical slaughter, are reviewed. The purpose of preslaughter feed availability according to halal criteria could be to ensure greater welfare for animals, though feed withdrawal is necessary today. Although there is no clear unified opinion among the Islamic sects, reversible stunning of animals is generally accepted. A neck cut at a higher position than the conventional low cut in cattle may reduce the compromise in welfare (the onset of unconsciousness), minimise false aneurysm and be compatible with halal criteria. This study may contribute towards consideration being given to technology that is not in conflict with the religious legislation, while at the same time meeting the requirements of the modern meat industry.

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“…When the fasting exceeds 12 hours, FTOTAL can cause intestinal rupture due to intestinal mucosal wear [42]. Thus, reductions in FFARM may result in increased broiler welfare during subsequent stages and a better final slaughter yield [44]. In contrast, FTOTAL less than 8 hours does not allow adequate emptying of the gastrointestinal tract [45], and crop rupture can occur due to the presence of excess food [46].…”

Section: Plos Onementioning

confidence: 99%

Effect of transportation distances, seasons and crate microclimate on broiler chicken production losses

et al. 2020

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The goal of this research was to evaluate the microclimate (temperature, relative humidity and ECI-enthalpy comfort index) of commercial loads of broiler chickens at different transport distances: Dist15 (15 km on average) and Dist90 (90 km on average) in the summer and winter seasons and their effects on the production parameters body weight difference (BWD), mortality (%) and bruising prevalence (%). Twelve broiler loads were monitored using dataloggers to record temperature and humidity, with a total of 24 target crates per load. The experiment followed a factorial design [2 seasons (rainy and dry) × 2 distances (Dist15 and Dist90)] with a randomized complete block arrangement, 3 sexes (all males, all females, or mixed shipments) and one shipment per combination. BWD had a heterogeneous distribution throughout the load, and this distribution was not significantly correlated with the mean ECI measured during transport at 12 positions along the load. In terms of comfort, summer is the most critical period for broiler transport. In the interaction between rainy season and Dist90, the highest ECI was scored in the lethal zone (where physiological mechanisms are not enough to control body temperature). Mortality during the rainy season was not significantly different between distances. However, during the dry season, mortality was twice as high as broilers that travelled for 15 km. The prevalence of bruising on carcasses was not affected by the interaction between season and distance. As we know, broiler chicken performance, during transport, can be also related to road conditions, being hard to evaluate the real impact of seasons and distances on animal welfare. Load microclimate can compromise broiler chicken welfare during transport and it does not necessary reflect significant losses pre and post-slaughter.

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Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

Cited by 11 publications

References 19 publications

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

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

Halal Criteria Versus Conventional Slaughter Technology

Effect of transportation distances, seasons and crate microclimate on broiler chicken production losses

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