They say they use antibiotics preventively to compensate for poor hygiene on farms

Chickens, like people, can also get sick even if they are kept under the best conditions. All animals are recognised as sentient beings (Article 13 of the TFEU – an article stating that full account must be taken of the welfare needs of animals, since they are sentient beings) and must be cared for when they fall ill. The veterinarian is a professional who assesses the symptoms, makes a diagnosis and prescribes the right treatment for sick animals, including antibiotics where necessary, as doctors do for people.