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Visual pigments of chicken and pigeon. These issues are related, as discussed by Gregory in an article on animal welfare and carcass hygiene. The obtained results were slightly different. Light distribution, duration, and intensity have a direct effect on flock performance and welfare.

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

Using the information on the environment and utilization and depreciation factor, the number of lamps required to obtain the desired light intensity of lux in the new shackling area was calculated as Data collection between the old and the new area was carried out as close as possible, but It was not possible to be simultaneous because of the works in the plant at the time of first collection. The alternative hypothesis was that noise was higher in the old area compared with the new area H 1: The results show that the null hypothesis H 0: Sector A included the distance between the last shackling station and the entrance to the stunner.

Noise results as measured in the old and new area are discussed below. Table 4 presents a summary of measurements, including the median mstandard deviation abng and the coefficient of variation of lighting cv at the evaluated spots.

Meat Science ;43 supl 1: Therefore, the interval between data collections was three months. The study demonstrated that it is possible to conciliate better animal welfare with visual comfort for workers in the shackling area. The legislation on animal welfare has greatly developed during the last few years.


The objective of the present study was the effect of environmental lighting on broiler stress by behavioral observations and by quantifying their struggle in the shackling sector of a processing plant.

Welfare and hygiene during preslaughter handling. The company has a feed mill, a hatchery, breeder farms, and contracted farmers, and sells chicken products to the south, southeast, north, and northeast regions Brazil, as well as exports them to Asian countries.

The objective of this study was to investigate if blue lighting could reduce broiler stress and comply with legal labor comfort requirements in a new shackling area of a middle-size processing plant. Protocolo de bem-estarparafrangos e perus [cited Set 13]. Considering processing line speed and observation intervals, approximately 67, broilers were observed or 33, in the old shackling area and 33, in the new shackling area.

During the grower phase, lighting can be used to moderate weight gain and to improve production efficiency and health of a flock Mendes et al. Meat Science ; Using controlled and reduced lighting during catching minimizes possible physical and or emotional damages during this operation Kristensen et al. The lighting of the new area was close to the recommendations of NBR for work stations, of lux.

Recording were made to include all possible variables: Lighting was measured in three different points of the video-recorded shackling line beginning, middle, endat birds’ head height.

Computers and Electronics in Agriculture abnh, Effect of varying light intensity on growth performance and 54133 characteristics of broiler chickens grown to heavy weights. The behaviour of broiler chickens in different light sources and illuminances.

Machine vision to identify broiler breeder behavior. This expansion will be gradual, as it involves the other structures breeder farms, hatchery, and broiler farms. Data were statistically analyzed using the non-parametric test of Wilcoxon-Mann-Whitney w test. Blue lighting blue fluorescent lamps and natural light, which came from openings to the external area were used.


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The method of evaluation applied to the new shackling area, after the blue lighting system was installed, was identical as that applied in the old shackling area, using the same video-recordings intervals, and humidity, temperature, noise, and avnt data were recorded using the equipment described above. In addition of the recordings, the following data were measured: Temperature, relative humidity, and luminosity were collected at the beginning aabnt each videorecording, 13 times daily, for five days.

Out of the points evaluated, it is the one that best represents lighting where the workers shackle the birds. The higher variability of the old area is due abht the influence of natural lighting. The use of reduced light intensity and blue work clothes are recommended in order not to startle the birds and to transmit calmness Komiyama, Ludtke, and Silveira, Services on Demand Zbnt.

In addition, the environment must have good ventilation, low noise, and adequate lighting.

Animal rearing and rearing technologies are dynamic fields that can have positive or negative influences on animal welfare. Quality attributes of animal products include good production practices and their association with animal welfare and workers’ wellbeing, as well as food safety and environmental aspects, which determine the ethics of animal production UBA, It was called “new shackling area”.

The alternative hypothesis was that there was more wing-flapping in the old area compared with the new area H: The conditions may be considered mild in both situations, complyingwith one of the assumptions of the study, which abt not taking the influence of climate into consideration.