Dunlin (Calidris alpina) - A medium-sized shorebird with a drooping bill, adult dunlin can be easily recognized while in breeding plumage by the large black patch on their otherwise white bellies. Familiar around the world, dunlin spend their winters up and down coastlines across the entire Northern Hemisphere.
Preformed vitamin A is found in animal products such as meat, fish, poultry and dairy foods. The other type, pro-vitamin A is found in plant-based foods such as fruits and vegetables. The most common type of pro-vitamin A is beta-carotene.
Vitamins in Animal Nutrition presents concise, up-to-date information on vitamin nutrition for livestock and poultry; comparisons with vitamin use in human nutrition are also presented. This book describes the basic chemical, metabolic, and functional role of vitamins and vitamin supplementation.