Domestic Duck Production: Science and Practice
Ducks are kept for profit in a great diversity of circumstances in both temperate and tropical climates. Outlining the biology of the domestic duck, this book provides quantitative descriptions of nutritional and environmental effects on growing and breeding ducks, as well as practical advice on husbandry, housing and management.
Apa yang dikatakan orang - Tulis resensi
Kami tak menemukan resensi di tempat biasanya.
2 Systems of Production
3 Housing and Environment
4 Husbandry of Table Duckling
5 Nutrition and Factors Affecting Body Composition
6 Rearing of Parent Stock
Edisi yang lain - Lihat semua
18 weeks 20 weeks 48 days accommodation age at sexual age at slaughter Age days Age weeks ambient temperature birds given birds per m2 birds reared Birds were given Birds were reared body composition body weight breast meat British Poultry Science brooder brooding common cause variation controlled growth Data from Cherry day-old days of age dead-in-shell diet dietary energy domestic duck dry bulb temperature effect of age efficiency of feed egg weight energy to protein environmental temperature feather feed conversion Feed conversion ratio feed intake fertility flocks hatchability hatching heat loss increase in daylength incubation laying performance libitum feed libitum mature live light programme lysine maintain Mallard mature live weight mature weight MJ ME/kg Pekin duck Pekin genotypes percentage rate of lay restricted feed sensible heat sexual maturity shows special cause variation step-down substantially table duckling weeks of age weight at 18 weight for age