The purpose of B. Sc. Thesis was to present four of the existing animal welfare problems in pig and poultry farming and perception of pain, stress and suffering. The first problem that seems to touch the welfare in pig farming is the tail docking. This method was used to reduce tail bites, which also has a negative impact on the welfare of pigs and it consequently causes economic losses. Tail docking is performed in piglets up to seven days of age, usually without anaesthesia or analgesia, which in turn causes pain, stress and suffering. The second problem is pig castration. It's performed mainly to prevent the unpleasant smell and taste of pork. In poultry, however, the most current problems at the moment are Beak-trimming and culling day-old chicks. Beak-trimming is performed worldwide to reduce injuries due to biting and cannibalism in poultry. Beak-trimming is a method where the beak is shortened up to 50% in order to prevent cannibalism and feather pecking in adult hens. The last issue mentioned in the B. Sc. Thesis is the culling day-old chicks due to economic unprofitability, which is reflected in the mass killing of day-old chicks. Due to their impact on welfare, the poultry industry is negotiating alternative methods for culling day-old chicks and beak-trimming. The last chapter we touched on presents how we can recognize pain, stress and suffering and what all influences it.
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