Protein evaluation systems in ruminants

Protein evaluation systems in ruminants

Protein evaluation systems in ruminants

The Importance of Feed Evaluation

Evaluating feeds is important for several reasons:

Knowing the nutritional value of feeds allows producers to use them at acceptable levels for their animals. It also enables them to cultivate or purchase suitable products in their farms. There are several methods for evaluating feeds, which include measuring a chemical composition in the feed (such as energy or protein) or a digested, absorbed, metabolized, or retained component in the final product (from the feed in question).

Forage sources constitute the majority of the diet in Iran. A deficiency of a mineral or vitamin can easily be compensated by adding a small amount of a concentrated source.

When there are changes in animal production, such as weight gain and milk production, and changes in nutrient levels of feeds, energy systems are primarily used to evaluate feeds. The main sources of energy for cattle are the cellulose and hemicellulose in forages and starches in grains. Fats and oils contain the highest amounts of energy but usually make up a small percentage of the diet. The energy ratio indicates the energy efficiency of a system, and the net energy reflects the performance of the system.

Gross energy cannot be a suitable criterion for evaluating feeds due to varying digestibility in different animals and loss through feces. Additionally, some digestible energy is lost through urine, fermentation gases, and heat. Therefore, more emphasis is placed on net energy criteria in systems like NRC, AFRC, etc., for feed evaluation.

Yektadam Persian produces various concentrates and supplements for poultry, livestock, and aquaculture with the highest quality and is ready to assist you. For more information about livestock and poultry supplements, please contact Yektadam specialists.

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