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Murawska D, Hanzal V, Janiszewski P, Lambert BD, Gesek M, Zawacka M, Michalik D, Borkowski R. Selected growth parameters of farm-raised mallard (Anas platyrhynchos L.) ducklings. CANADIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.1139/cjas-2016-0019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to determine changes in selected growth parameters of farm-raised mallard ducklings from hatch to 42 d of age. The largest increases in body and carcass weights of ducklings and weights of the analyzed tissue components were noted during the first 28 d of the rearing period, except for breast and wing muscles. In comparison with other muscle groups, the growth rate of breast and wing muscles was lower from hatch to 14 d of age, greatest between 14 and 28 d, and remained high up to 42 d of age. The average body weight of mallard ducklings increased more than 16-fold (from 39.7 to 644.8 g, P ≤ 0.01), and the average carcass weight increased more than 26-fold (from 14.4 to 384.5 g, P ≤ 0.01). The growth rates of carcass and tissue components varied considerably. Wing weight increased 84.5-fold (from 0.80 to 67.6 g, P ≤ 0.01), followed by breast weight, which increased 48-fold (from 1.7 to 82.9 g, P ≤ 0.01). Slower growth rates were noted in the remaining carcass parts: back, 23-fold; neck, 19.2-fold; and legs, 17.1-fold (from 5.4 to 92.2 g, P ≤ 0.01).
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Affiliation(s)
- Daria Murawska
- Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Vladimir Hanzal
- Department of Landscape Management, Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska St. 13, 370-05 Ceske Budejovice, Czech Republic
| | - Pawel Janiszewski
- Department of Fur-Bearing Animal Breeding and Game Management, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Barry D. Lambert
- Department of Wildlife, Sustainability and Ecosystem Sciences, Tarleton State University, Stephenville, Texas Box T-0050, Stephenville, TX 76402, USA
| | - Michal Gesek
- Department of Pathological Anatomy, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland
| | - Magdalena Zawacka
- Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Danuta Michalik
- Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
| | - Rafal Borkowski
- Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland
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