Lighting in the shackling area: conciliating broiler welfare with labor comfort

Adamczuk, GO; Trentin, Marcelo Gonçalves; Lima, J. de F.; Motta, Jaqueline Freitas; Cantelli, RP

doi:10.1590/1516-635x160287-92

Cited by 10 publications

(9 citation statements)

References 13 publications

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“…Consumers are becoming increasingly aware of animal welfare issues, and have started to demand the adoption of methods that mitigate animal suffering during slaughter (Elrom, 2000). However, welfare concerns must be addressed using technical approaches, such as those proposed in a study on the effects of lighting in the shackling area on broiler welfare (Adamczuk, 2014).…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Electrical Stunning by Electronarcosis: Current Situation and Perspective of Improvement in a Medium-Size Processing Plant

Barbosa

Adamczuk

Dvojatzki

et al. 2016

Rev. Bras. Cienc. Avic.

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Keywords Broilers, animal welfare, electric stunning by electronarcosis, stunning severity index, Statistical Process Control, control charts. ABStRACtThe objective of this study was to evaluate the efficiency of electrical stunning by electronarcosis in a medium-size poultry processing plant located in southern Brazil. The current measurement of this type of stunning is presented, and then improvements to this method are proposed. Data were collected for 90 days. A quality indicator was proposed: the Stunning Severity Index (SSI), which includes elements of Statistical Process Control (SPC) using a p-chart (proportion chart) and measures. This index comprises the variables "wing-flapping," "arched head," and "rhythmic breathing." Using the proposed index, 5% of the birds, on average, presented inefficient stunning symptoms.

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Section: Introductionmentioning

confidence: 99%

Efficiency of Electrical Stunning by Electronarcosis: Current Situation and Perspective of Improvement in a Medium-Size Processing Plant

Barbosa

Adamczuk

Dvojatzki

et al. 2016

Rev. Bras. Cienc. Avic.

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“…Although colour has been confused with illuminance in many trials, wavelength has been reported to have an unquestionable effect on poultry production, behaviour and welfare (Lewis and Morris, 2000;Tavares et al, 2015). Light distribution, duration, and intensity have a direct effect on flock performance and welfare (Adamczuk et al, 2014).…”

Section: Fearmentioning

confidence: 99%

“…Mitigation measures : A mitigation measure used to minimise fear in Phase 1 is blue light (440–490 nm) as it calms birds down and allows them to rest in the lairage zone (see Figure ) and during handling for shackling. The blue light still allows the workers to see and handle birds with precision, leading to less stress for the animals (Adamczuk et al., ). Avila and Abreu () reported that blue light is used for catching birds as it overrides the visual capacity of the birds and they remain still, facilitating the movement of the catcher.…”

Section: Assessmentmentioning

confidence: 99%

Slaughter of animals: poultry

Nielsen¹,

Álvarez²,

Bicout³

et al. 2019

EFS2

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The killing of poultry for human consumption (slaughtering) can take place in a slaughterhouse or during on-farm slaughter. The processes of slaughtering that were assessed, from the arrival of birds in containers until their death, were grouped into three main phases: pre-stunning (including arrival, unloading of containers from the truck, lairage, handling/removing of birds from containers); stunning (including restraint); and bleeding (including bleeding following stunning and bleeding during slaughter without stunning). Stunning methods were grouped into three categories: electrical, controlled modified atmosphere and mechanical. In total, 35 hazards were identified and characterised, most of them related to stunning and bleeding. Staff were identified as the origin of 29 hazards, and 28 hazards were attributed to the lack of appropriate skill sets needed to perform tasks or to fatigue. Corrective and preventive measures were assessed: measures to correct hazards were identified for 11 hazards, with management shown to have a crucial role in prevention. Ten welfare consequences, the birds can be exposed to during slaughter, were identified: consciousness, heat stress, cold stress, prolonged thirst, prolonged hunger, restriction of movements, pain, fear, distress and respiratory distress. Welfare consequences and relevant animal-based measures were described. Outcome tables linking hazards, welfare consequences, animal-based measures, origins, and preventive and corrective measures were developed for each process. Mitigation measures to minimise welfare consequences were also proposed.

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“…According to Gregory and Bell (1987), factors such as excessive sunlight, inadequate equipment, and loss of eye contact with other birds may contribute to increased agitation in broilers during the pre-slaughter stages and compromise their welfare. Higher light intensity can make the animals more active, while dark environments decrease activity, agitation, and escape behavior (Kristensen et al, 2006; Adamczuk et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of different catching practices during manual upright handling on broiler welfare and behavior

et al. 2019

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The aim of this study was to identify the influence of different catching practices during manual upright handling on broiler welfare and behavior. Catching was examined in a total of 4,595 Cobb broilers with average live weight of 3.2 kg and 42 days old. Six catching practices were evaluated: shed curtain position, loading time, catching method, catching team, height of the crates from the floor, and placement of the bird in the crate. Behavioral welfare indicators were defined as follows: 1) broiler agitation in the catcher's hands, measured when the birds flapped their wings, kicked, or wriggled in the hands; 2) broiler striking the crate entrance as it was being placed in the crate, measured when the birds get the head, wings, or legs, hit at the crate entrance; and 3) broiler agitation in the crate, measured when birds flapped the wings or jumped inside the crate for 3 s or more after placement in the crate. A logistic regression model was used to calculate the chance of occurrence of each behavioral welfare indicator due to the handling factors. All catching practices evaluated in the present study influenced the birds’ welfare and behavior. Thus, some procedures during broiler catching potentially improved their behavior, making them less prone to accidents, and consequently improved their welfare. The catching process should be performed with the curtains in the closed position, carrying one broiler per catcher in an upright position while containing its wings, carefully placing the birds inside the crates, and with the crates being positioned at a height of at least 21 cm from the ground. Additionally, it was concluded that more attention should be given to the broiler catchers, since the position of the curtain, loading time, and position of the crate during handling can influence the work done by them, affecting the welfare and behavior of both humans and birds.

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Lighting in the shackling area: conciliating broiler welfare with labor comfort

Cited by 10 publications

References 13 publications

Efficiency of Electrical Stunning by Electronarcosis: Current Situation and Perspective of Improvement in a Medium-Size Processing Plant

Efficiency of Electrical Stunning by Electronarcosis: Current Situation and Perspective of Improvement in a Medium-Size Processing Plant

Slaughter of animals: poultry

Effect of different catching practices during manual upright handling on broiler welfare and behavior

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