Unit 14: Explore animal nutrition and digestion in relation to livestock and poultry management Determine nutritional requirements for livestock and poultry breeds found in North Carolina Compare animal digestive systems of beef, swine, and poultry
The major classes of feed nutrients Water Proteins Carbohydrates Minerals Vitamins Fats
Water Regulates body temperature, dissolves, and transports nutrients
Carbohydrates Main energy nutrient in animal rations Makes up about 75% of most animal rations Consist of sugar, starch, and cellulose Corn and other cereal grains are the major source of carbohydrates
Cereal Grains Provide the main source of carbohydrates in feeding swine Examples include corn, wheat, rye, barley, oats
Minerals Are responsible for the development of teeth, bones, and vital organs Minerals are supplied by mineral supplements
Ground limestone Is a source of calcium and is important in the development of eggshells for laying chickens
Protein Is needed for the development of wool, hair, hoofs, claws, beaks, feathers, and muscles in animals
Fats Are a source of energy and is 2.25 times the energy of carbohydrates Only small amounts of fats are required
Vitamins Are needed by animals in small amounts to perform specific functions A deficiency in vitamins can lead to disease or death Vitamins help prevent livestock diseases
Nutrient Is a substance that is necessary for an organism to live and grow
Ration Is the total amount of feed an animal has in a 24- hour period
Balanced Ration Is a ration that contains all the nutrients that the animal needs in the correct proportions
Vitamin A A deficiency of vitamin A in feed rations for livestock animals can causes night blindness
Vitamin C Comes from green pastures and hay
Classes of feeds Concentrates Roughages
Concentrates Are low in fiber and high in total digestible nutrients (TDN)
Roughages Are high in fiber and low in total digestible nutrients (TDN)
Sources of Concentrates Cereal Grains: a major source of most concentrates Oils Molasses Meat byproducts
Examples of Fats Vegetable oil, cottonseed, fishmeal, soybeans, peanuts
Sources Roughage Include hay, grass, silage and alfalfa
Dry roughage Are pasture grasses that are cut and baled as hay to feed cattle, horses, or goats
Green roughage includes the pasture grasses and small grains that cattle, horses, sheep or goats graze on
Silage Is a roughage that results from storage and fermentation of green crops
Feed Additives Promote faster gains in livestock animals and poultry Added to feed to improve feed efficiency
Twitch Is a tool used to restrain horses
Parasite An animal that lives and feeds on other animals
Mite Is an external parasite that can cause the manges on livestock animals
Internal parasites Are organisms that live inside of their host Examples of internal parasites: fluke, stomach worm and protozoa
Good Ventilation The main thing to consider in providing housing for animals
Vaccinations Are administered to animals to prevent diseases
Subcutaneous injections Are made under the skin to administered drugs to animals
Docking Is the removal of tails from baby pigs
Polygastric or Ruminant digestive system Has a large stomach divided into 4 compartments This digestive system use food materials high in fiber type roughage (hay, grass)
Ruminants Animals Sheep, Cattle, Goats, and deer
Stomach Is a muscular organ that stores ingested food and moves it into the small intestines
Cattle Have 4 compartments in their stomachs
Abomasum Is the true stomach in the ruminant digestive system
Monogastric Digestive system Has a simple stomach Pigs, chickens, dogs, horses and humans have a simple or monogastric stomach
Pigs or swine Have the same type of digestive system as do humans Their rations must be high in concentrates (corn)
Poultry Rations Must be high in food value since chickens have no true stomach and can only store small amounts of food in their digestive system
Gizzard Is part of the digestive system in chickens where the feed is crushed and mixed with digestive juices
Chickens Have no teeth and they swallow their food whole, store it in their crop, then pass the food on to the gizzard where it is ground up
Proventriculus Is the stomach of a chicken
Animal Health