Animal nutrition

Egg formation begins in the hen's ovary where the yolk develops and accumulates nutrients. Once mature, the yolk enters the oviduct where the albumen (egg white) is added, followed by the shell membranes and finally the hard calcium shell. This entire process takes about 24-26 hours. A healthy Nigerian hen kept with adequate feed and water produces eggs regularly.

Incubation is the process of keeping eggs warm at the right temperature—about 37.5°C—for chicks to develop inside. This takes 21 days for chicken eggs. During this period, the egg must be turned regularly to ensure proper development. You can incubate eggs naturally using a broody hen or artificially using an incubator, like those used in commercial farms across Nigeria.

Feed nutrients are substances in animal feeds that help livestock grow, reproduce, and stay healthy. The main nutrients are proteins, carbohydrates, fats, vitamins, minerals, and water. Proteins build muscles and tissues, carbohydrates provide energy, while fats store energy and support hormone production. Vitamins and minerals regulate body functions and keep bones strong.

In Nigeria, farmers commonly use locally available feeds like maize, cassava peels, groundnut cake, and legumes such as soybeans. For instance, a poultry farmer in Lagos might mix maize (carbohydrates), groundnut cake (protein), and shell lime (calcium) to create a balanced ration for layers. Understanding these nutrient sources helps farmers reduce feed costs while maintaining animal productivity.

Animal feeds are classified based on their nutritional content and how animals use them. Roughages are bulky feeds low in nutrients, like grass, hay, and maize stalks that help animals' digestion. Concentrates are nutrient-dense feeds such as grains and legumes that provide energy and protein. A typical Nigerian example is when a farmer feeds cattle with guinea grass as roughage and groundnut cake as concentrate to ensure balanced nutrition.

Succulent feeds like cassava leaves and kitchen waste have high water content. Mineral feeds include salt and bone meal that supply essential minerals for strong bones and bodily functions. Most successful Nigerian farmers combine these feed types—for instance, mixing dried maize stalks with soya bean meal—to create a complete diet that keeps animals healthy and productive.

Feed formulation means mixing different food ingredients in the right amounts to create a balanced diet for farm animals. Just like you need proteins, carbohydrates, fats, minerals and vitamins daily, livestock also need these nutrients in specific quantities depending on their age, size and purpose. A farmer raising broiler chickens in Lagos, for example, must formulate feed containing about 23% crude protein and enough energy from grains to make the birds grow fat quickly for meat production.

The goal is simple: provide animals with all necessary nutrients while keeping costs low. Feed formulators use mathematical calculations and nutritional tables to decide how much maize, soybean meal, fish meal, vitamins and minerals to mix together. A poorly formulated diet means sick animals, slow growth and wasted money.

A ration is simply the total amount of feed given to an animal daily. Different animals need different rations depending on their purpose and stage of life. A maintenance ration keeps an animal healthy without growth, while a production ration supports milk, meat, or egg production. Growth rations help young animals develop properly, and a finishing ration prepares animals for market by adding weight quickly.

Consider a dairy cow in Nigeria. During lactation, she needs a production ration with extra nutrients to make milk. When not lactating, the same cow needs only a maintenance ration. A growing calf requires a growth ration with more protein and energy than an adult cow would need.

Understanding these distinctions matters because feeding the wrong ration wastes money and reduces productivity. Farmers must match rations to animal needs, not feed everything the same way.

Livestock are grouped into different classes based on what they eat and how their bodies digest food. The main classes are ruminants, monogastric animals, and pseudo-ruminants. Ruminants like cattle, goats, and sheep have a special four-chambered stomach that allows them to digest tough plant materials such as grass and hay. A Fulani herder in northern Nigeria raises cattle that survive on pasture because of this unique digestive system. Monogastric animals like pigs and poultry have a simple single-chambered stomach and need more processed, nutrient-rich feed. Pseudo-ruminants like camels have a similar but slightly different system. Understanding these classes is crucial because each requires different nutrition strategies. A pig cannot survive on grass alone like a cow can, so farmers must provide appropriate feed for each class to get good results.

When your farm animals show signs of poor health, stunted growth, or unusual behavior, it's usually because they're missing certain nutrients in their feed. Each nutrient deficiency produces specific symptoms that help you identify what's wrong. For example, if your poultry birds show bent legs and soft bones, they're likely lacking calcium and vitamin D. Cattle that refuse to eat and produce less milk might be deficient in phosphorus. A goat displaying poor coat quality and slow growth probably needs more protein in its diet.

Understanding these connections between visible symptoms and missing nutrients helps you adjust your feeding program quickly. You observe what's happening with your animals, match those signs to known deficiencies, then add the right supplements or feed supplements to fix the problem before it causes serious losses on your farm.