The studies were carried out on 480 Peking ducks from the paternal A44, A55 and maternal P66, P77 strains. The birds were housed indoors on a slatted floor. Concentrate mixtures for ducks were provided ad libitum. Ducks from the investigated strains characterized by a great body weight. In the 9th week of ducks’ life males weighed beyond 3 kg, and females 2.85 kg. Up to the 9th week, feed intake per one duck and per 1 kg of body weight ranged from 11.9 to 13.6 kg, and from 3.8 to 4.1 kg, respectively. Slaughter yield was from 66.2 to 70.1% but females characterized by a greater slaughter than males. Proportion of breast and leg muscles in ducks’ carcasses increased together with the age of birds and was from 24.8 to 28.0% in the 9th week of life. Skin with subcutaneous fat content was stated from 21.3 to 28.9% of carcass, and it was mostly greater in females within each strain.

71-80