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The welfare implications of animal breeding and breeding technologies in commercial agriculture. Rio de Janeiro; The lighting of the new area was close to the recommendations of NBR for work stations, of lux.

Lighting was measured in three different points of the video-recorded shackling line beginning, middle, endat birds’ head height. Lighting in the shackling area: 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.

Spectral sensitivity of the domestic fowl. The company works with a single broiler genetic strain Cobb Meat Science ;43 supl 1: Blue light is recommended during catching, as the visual perception of broilers is greatly impaired, and therefore, they are not distressed.

Visual pigments of chicken and pigeon. The values of wing-flapping are shown in Tables 1 and 2respectively.

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Due to environmental changes and handling to which broilers are submitted during shackling, stress is more intense and it is expressed as struggling, which may lead to processing losses, including broken bones, bruises, and abbt quality defects like pale, soft, and exudative meat PSE or dry, firm and dark meat DFD. The expected value was 39, readings in minutes 39, seconds. A pro-active approach, aiming at ensuring that neither technological development nor animal nnbr are compromised, is recommended Clark et al.


The wing-flapping values obtained in broilers shackled in the old and the new areas are shown in Tables 1 and 2respectively. Therefore, the new area presented more favorable avnt both for broilers and workers in terms of noise. Machine vision to identify broiler breeder behavior. Photoperiod and oviposition time in broiler breeders.

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

513 of varying light intensity on growth performance and carcass characteristics of broiler chickens grown to heavy weights. Because it is a closed environment, temperature and relative humidity were measured in a single spot, near the shackling line.

Lighting can have a positive or negative influence on broiler welfare because it affects their behavior. It was called “new shackling area”. Light distribution, duration, and intensity have a direct effect on flock performance and welfare.

World’s Poultry Science ; As previously mentioned, light intensity was measured at three points 1, 2 and 3according to shackling flow.

In addition of the recordings, the following data were measured: 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.

In the first step, an existing 543 sector was evaluated.

Noise results as measured in the old and new area are discussed below. The reduction of noise in the new area was 2.

anbt The study demonstrated that it is possible to conciliate better animal welfare with visual comfort for workers in the shackling area. This step was called “old shackling area”. Lewis PD, Morris T. Effect of light intensity on broiler behaviour and diurnal rhythms. 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.

Bird activity is reduced as light intensity diminishes. When all cones are simultaneously stimulated, the brain preceives the light as white.


Recordings were made in the new and the old shackling areas. Animal rearing and rearing technologies are dynamic fields that can have positive or negative influences on animal welfare. The conditions may be considered mild in both situations, complyingwith one of the assumptions of the study, which was not taking the influence of climate into consideration.

Temperature, relative humidity, and luminosity were collected at the beginning of each videorecording, 13 times daily, for five days.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. In this study, a conventional lighting system was compared with brighter lighting system designed to provide better visual comfort to workers in compliance with the Brazilian regulations ABNT.

The null hypothesis was that wing-flapping values were not different between the new and the old areas H: The decibelimeter recorded instantaneous values every second. Nbf on this data, the utilization factor was determined as 0. As abn were two groups, the medians of wing flapping in the old A pa and new A pn shackling areas were compared.

This has been used to improve the handling of broilers during catching. The higher variability of the old area is due to the influence of natural lighting. 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, Color perception of poultry is similar to that of humans, except for short-wave light.

Blue lighting in the shackling area of broiler processing plants contributes to reduce bird struggling.