The Effects of Handling and Slaughter Method on the Incidence of Hemorrhagic Thighs in Broilers

Wilson, Jerry G.; Brunson, C. C.

doi:10.3382/ps.0471315

Cited by 24 publications

(13 citation statements)

References 3 publications

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“…Many reports stress the importance of handling the birds as a cause of bruising (e.g. Jewett and Saunders, 1960;Hamdy et al, 1961;Wilson and Brunson, 1968). Whilst handling is undoubtedly a very important cause of bruising, other factors may also contribute.…”

Section: Introductionmentioning

confidence: 94%

The incidence of bruising in broiler flocks

Mayes¹

1980

British Poultry Science

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Section: Introductionmentioning

confidence: 94%

The incidence of bruising in broiler flocks

Mayes¹

1980

British Poultry Science

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“…For example, if severe wing flapping occurs during handling this may contribute to the occurrence of abnormal carcase conditions 22 G. KANNAN AND J. A MENCH such as bruising (Wilson and Brunson, 1968) and red wingtips (Gregory et al, 1989). These conditions result in downgrading of broiler carcases and necessitate generous trimming resulting in substantial economic losses to the industry.…”

Section: Introductionmentioning

confidence: 96%

Influence of different handling methods and crating periods on plasma corticosterone concentrations in broilers

Kannan

Mench

1996

British Poultry Science

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1. Experiments were conducted to determine whether different handling methods and crating periods differentially affect plasma corticosterone (CS) concentrations in 6 to 7-week-old broilers. 2. Broilers were subjected to 1 of 3 handling methods for 2 min: (i) 3 birds held in an inverted position in one hand (multiple inverted, MI), (ii) 1 bird held in an inverted position (single inverted, SI), or (iii) upright handling (U), which consisted of holding a bird gently with both hands in an upright position. 3. In experiment 1 birds were returned to their respective pens after handling and in experiment 2 they were crated for up to 4 h after the imposition of handling. In experiment 2 food deprived (FD) and fully fed (FF) uncrated birds were also sampled as controls. Blood samples were collected immediately after handling and at 1-h intervals after handling or handling and crating. 4. In experiment 1, MI and SI birds had higher CS concentrations than U birds. 5. In experiment 2, there were no significant differences in CS concentrations of crated birds despite the different handling treatments. FD birds had higher mean CS concentrations than FF birds, although not as high as those of crated birds. CS concentrations peaked at 3 h after crating. Birds showed predominantly resting behaviour after crating. 6. These results suggest that handling stress can be reduced in broilers by the use of upright handling. However, the methods of handling is not important in influencing CS concentrations if the birds are crated after handling, either because crating is a more potent stressor than handling or due to stressor additivity.

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“…The reasoning behind this is that carrying the bird inverted by only one leg places the entire weight of the bird on one leg, rather than across two legs. Wilson and Brunson (1968) showed that after carrying a broiler by only the right leg, the severity of bruising in the right thigh was greater than in the left thigh. The inverted posture places an unnatural strain on the joints, especially the hip joint, predisposing to dislocation, injury, haemorrhage, and death (Mitchell and De Boom 1986;Gregory 1994).…”

Section: Catching and Handlingmentioning

confidence: 99%

“…Depending on the manner of application, electrical stunning can cause sufficient muscular and vascular spasms for haemorrhage to occur (Kranen et al 2000). Wilson and Brunson (1968) showed that the method of stunning could affect the severity of leg bruising.…”

Section: Catching and Handlingmentioning

confidence: 99%

Injury and mortality in broilers during handling and transport to slaughter

Cockram

Dulal

2018

Can. J. Anim. Sci.

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Multiple factors affect the risk of broiler injury and mortality during loading, transport, and lairage. These include the physical and pathophysiological condition of broilers before loading and the type of handling procedures used. The external environmental conditions have a major influence on the risk of mortality. Combinations of high stocking density, insufficient ventilation, and high temperature and humidity pose a risk of hyperthermia. Combinations of wet conditions, cold temperature, and air movement, increase the risk of hypothermia. However, protection from cold and wet conditions involves the use of side protection that restricts the trailer ventilation that can cause heat and moisture to build up in the load, increasing the risk of hyperthermia. Modular systems reduce the risk of injury and facilitate unloading into a lairage where temperature and ventilation can be controlled. The duration of loading, transport, and lairage increases the mortality risk. Deaths can occur during each stage and interactions between the duration of the preslaughter stages, the thermal environment, fasting, ill-health, and injury can reduce the physiological capacity of the birds to maintain homoeostasis resulting in exhaustion and death. Quality control and action on the identified risk factors should reduce injury and mortality during preslaughter handling and transport.

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The Effects of Handling and Slaughter Method on the Incidence of Hemorrhagic Thighs in Broilers

Cited by 24 publications

References 3 publications

The incidence of bruising in broiler flocks

The incidence of bruising in broiler flocks

Influence of different handling methods and crating periods on plasma corticosterone concentrations in broilers

Injury and mortality in broilers during handling and transport to slaughter

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