Agricultural Economics 1 Animal Genetics and Breeding, (New March 2000) 1 Animal Health and Hygiene (General) 1 Animal Nutrition (General) 1 Animal Reproduction and Embryology, (New March 2000) 1 Animal breeding 1 Animal health 1 Diets 1 Duck feeding 1 Ducks 1 Egg Producing Animals 1 Egg hatchability 1 Egg production 1 Farm and Horticultural Structures 1 Farming systems 1 Feed intake 1 Genetic improvement 1 Growth rate 1 Meat Producing Animals 1 Meat production 1 Poultry 1 Poultry housing 1 Reproductive performance