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Growth curve analyses in selected duck lines
- Source :
- British Poultry Science. 42:574-582
- Publication Year :
- 2001
- Publisher :
- Informa UK Limited, 2001.
-
Abstract
- 1. Growth patterns of male ducks from 4 lines (lines A, B, C and D) selected for market weight were analysed and compared to growth patterns of ducks in the respective line 7 generations earlier. Growth curves were analysed using procedures derived from the Weibull sigmoidal function and the linear-linear relative growth rate model and simple allometry. 2. The ducks were fed ad libitum under 24-h lighting throughout the experiment. At weekly intervals from the time of hatch through 70 d of age, 16 ducks from each line were killed to determine body, carcase, breast-muscle, leg and thigh-muscle, and abdominal fat weights. 3. Line A was the heaviest line, followed by line B, line C and line D. However, body weight, carcase weight and breast-muscle weight at 49 d of age were not significantly different between lines A and B. After 7 generations of selection, the breast-muscle yield was increased to >19% and the abdominal fat percent was reduced to
- Subjects :
- Male
Aging
Body Weight
Extremities
General Medicine
Growth curve (biology)
Biology
Body weight
Models, Biological
Pectoralis Muscles
Ducks
Animal science
Adipose Tissue
Inflection point
Abdomen
Relative growth rate
Animals
Animal Science and Zoology
Allometry
Growth rate
Line (text file)
Asymptote
Muscle, Skeletal
Food Science
Subjects
Details
- ISSN :
- 14661799 and 00071668
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- British Poultry Science
- Accession number :
- edsair.doi.dedup.....99594a70697c0db30139e9814e2a20d4