How to design chicken pellet feed formula?

Chicken feeding standards. Feed composition and nutritional value table. Prices of various feed ingredients.

The purpose of diet design is to better meet the nutritional needs of chickens, make the nutrition in the diet balanced and comprehensive, and achieve a reasonable combination of feeds, so as to obtain an efficient and low-cost diet formula. The following are several commonly used dietary preparation methods.

(1) Trial and error method

Also known as counting method. Specific method: First, according to experience, the approximate proportion of various feed raw materials is proposed, and then the percentage of various nutrients contained in each raw material is calculated, and then the content of the same nutrients in various raw materials is added to obtain the content of each nutrient in the total formula. Compare the obtained results with the feeding standard. If some nutrients are more or less, they can be adjusted and recalculated until the nutritional indicators basically meet the requirements. This method has a large amount of blind calculations and it is not easy to screen out the best formula.

(2) Cross method

Also known as method, diagonal method, etc. This method uses two feeds to prepare a mixed feed that meets the requirements of certain nutrients. After multiple calculations, two feeds combined with two mixed feeds can meet the requirements of upper and lower nutrients. This method is suitable for calculations with fewer feed types and nutritional indicators. If there are more nutritional indicators, the calculation will be more complicated.

(3) Formula method

This method uses a mathematical simultaneous equation solution method to calculate the feed formula, with a clear structure and simple method. Clear structure and simple method.

(4) Computer configuration method

Use a computer to screen the best diet formula. This method is fast and can consider multiple feed raw materials and nutritional indicators at the same time. Under the conditions of meeting various nutritional indicators and given feed types, it can minimize the feed formula cost to obtain the best formula.