Plume behavior occurs when chicks feed and pull feathers from other birds. This behavior will destroy the feathers of the birds, cause injuries, and may even lead to mutual fratricide. In order to avoid feathering behavior, farmers resort to low lighting or breaks, which is detrimental to the welfare of poultry. Traditional shelf cages will be banned by the European Union after 2012, and the behavior of feathers may become a special problem for the production system to replace traditional shelf cages. The practical solution to this problem is the goal of the EU-funded project, "Bad Behavior: Understanding Through Resolution." EU-funded research shows that general, rather than aggressive, behavior can be transferred by society. Also, a white or yellow polypropylene strap hung in a cage will cause the strap to resemble a prying comb, significantly reducing pecking behaviour.
Paralyzed behaviour is caused by genetic, social and environmental causes. Researchers observed the behavior of hens at different levels of pupa and tried to confirm their behavioral and physiological characteristics. The less hens were more friendly and showed a tendency to be more intimate with other hens in the group. For example, in the experiment where the females were isolated from their peers and tested for the time they ran back to the flock through a channel, the less feathered hens ran faster. Their response to imprisonment is also more negative. Although this group has a higher plasma barbitone as an indicator of stress, they rarely compete. These observations provide the basis for pressure selection in future breeding programs.
About the degree of fighting. A research team tested the behaviour of a group of birds that may have caused the spread of feathers. First, the feathers of a hen were trimmed to simulate the effects of feathers. This will trigger a fight in the trimmed position, even those chickens that have never shown such behavior in the past. Cases of cannibalism were recorded. Another question asked by researchers is whether combative hens will pass on this behavior to unruly hens. This was proven in tame fights, but not in serious fights. The researchers pointed out that high-frequency tame fights may lead to an increase in the chance of serious fighting.
Interesting environment. The strengthening of the environment can reduce the boredom, fear and fighting of poultry. It has even been reported that it can promote development, increase food conversion, beneficial reproductive behavior and health. However, the findings are inconsistent. The problem seems to lie in finding intensive incentives to attract and maintain poultry interests. Chicks' expectations of people's choices may have attracted many of their "enhanced" devices. The researchers therefore focused on identifying reliable devices for distracting the chick's attention. In one experiment, a string or feather was placed in front of the chicks and it was found that the chicks were more likely to feed on the string. A group of items that stimulate the bucket, including a bead, a chain, a toy and a string (polypropylene strapping), are presented in front of the pair of chicks, in each case, and in the daily test, relative to any other item. In terms of chicks, the chicks were earlier and more pecking on the string. With repeated experiments, chicks became more and more interested in all the stimuli, but especially the string. This strong interest in strings was noticed in two different kinds of chickens.
Why is a string so attractive to chicks? One hypothesis is that fine cotton may be similar to some "regular" stimulants, such as straw grass or bugs. However, the project collaborators prefer another explanation. This explanation is based on the special habit of chicks responding to different items: The chicks use them in addition to feeding and pulling strings as they do in other items. The smash tears the string and combs out one strand of it. This recollection of feathers by mouth means that the string may provide more positive reactions than other items, and is a more visually enhanced device.
In other experiments, the research team tested the "string theme" under the change: different colors of the monochrome fine cotton, using two or more colors in the same set of devices, the string put on silver beads, making fine The rope is set according to the poultry's own intention or external media. The "improvement" of all these assumptions does not make a difference: Chicks are obviously more inclined to stationary, pure white or pure yellow without silver beads. Not only that, the simplest of all these test items still attracted interest after 122 consecutive displays.
The team then used their devices in experiments to test whether the devices actually reduced paralysis. A group of aggressive chicks are provided with string, while others are not provided. The presence of the device led to a drastic reduction in tame and severe plumage behavior. In another trial, the device tested poultry that had been confined in a commercial farm cage and had not been severed. After 30 weeks, the displayed stringed poultry apparently exhibited less feather damage than the poultry without the display string. The results of this work offer a simple, low-cost, easy-to-get, and durable device that can provide an effective solution to important animal welfare issues, in addition to providing insight into the possible causes of paralysis. This removes a major obstacle to the development of poultry cageless feeding systems.
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