| Autor: |
Kokoszyński D; Department of Animal Sciences, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, 85084 Bydgoszcz, Poland., Wasilewski R; Department of Animal Sciences, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, 85084 Bydgoszcz, Poland., Saleh M; Department of Poultry and Animal Production, Faculty of Agriculture, Sohag University, 82524 Sohag, Egypt., Piwczyński D; Department of Animal Biotechnology and Genetics, Faculty of Animal Science and Biology, UTP University of Science and Technology, 85084 Bydgoszcz, Poland., Arpášová H; Department of Small Animal Science, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, 94976 Nitra, Slovak., Hrnčar C; Department of Small Animal Science, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, 94976 Nitra, Slovak., Fik M; Department of Small Animal Science, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, 94976 Nitra, Slovak. |
| Abstrakt: |
Native breeds of ducks have been the subject of many studies in the past, yet the relevant knowledge is still incomplete and needs to be further expanded. The objective of this study was to provide information about differences in growth performance, dressing percentage, carcass composition and digestive morphometry among three lines of Pekin ducks from conservation flocks raised in Poland. The study used 180 sexed Pekin ducks-30 males and 30 females of line P33 (ducks of Polish origin), 30 males and 30 females of line P8 (ducks of Danish origin), and 30 males and 30 females of line P9 (ducks of French origin). Throughout the study (49 d), ducks were confined indoors in six pens. Birds were fed complete commercial diets ad libitum and had unrestricted access to water. The compared lines of ducks differed significantly in body weight from 1 to 49 d of age except of ducks of both sexes at 14 d. At 49 d of age, significant differences were observed between the tested ducks in all the body measurements. Duck genotype had a significant effect on preslaughter body weight, carcass weight and breast muscle, neck and remainders contents, caeca length, liver weight and gizzard percentage. The results show that the tested ducks were significantly different and unique, mainly in terms of the body biometric characteristics. |
