Write short notes on four nutrient livesock under the following headings (a) composition (b) sources (c) functions

1. Protein

1. Composition: Proteins are made up of amino acids, which are linked together in a chain.
2. Sources: Sources of protein for livestock include legumes (e.g. soybeans, alfalfa), animal by-products (e.g. fish meal, blood meal), and some cereal grains (e.g. corn, wheat).
3. Functions: Proteins are essential for the growth and repair of body tissues, including muscles, organs, and bones. They also play a role in hormone and enzyme production, as well as immunity.

2. Carbohydrates

1. Composition: Carbohydrates are made up of sugars, which are linked together in chains.
2. Sources: Sources of carbohydrates for livestock include cereal grains (e.g. corn, barley, oats), root crops (e.g. potatoes), and some forages (e.g. grasses, legumes).
3. Functions: Carbohydrates are the primary source of energy for livestock, providing fuel for physical activity and basic bodily functions.

3. Fat

1. Composition: Fats are made up of fatty acids, which can be either saturated or unsaturated.
2. Sources: Sources of fat for livestock include vegetable oils (e.g. soybean oil, cottonseed oil), animal fats (e.g. tallow, lard), and some cereal grains (e.g. corn).
3. Functions: Fats are a concentrated source of energy for livestock and play a role in the absorption and transport of fat-soluble vitamins.

4. Minerals

1. Composition: Minerals are inorganic substances that are required in small amounts.
2. Sources: Sources of minerals for livestock include forages and concentrates (e.g. mineral supplements, salt blocks).
3. Functions: Minerals play a role in many bodily functions, including bone growth and maintenance, enzyme production, and nerve function. Some minerals, such as iron and copper, are also involved in the transport of oxygen in the blood.