As the core feed for laying hens, the pre mixed feed for laying hens is rich in vitamins, trace elements, enzyme preparations, microorganisms and other additives, which supplement the nutritional deficiencies of basic feed for laying hens and stimulate their maximum production performance. Scientific and reasonable use is the key. The following is an introduction to common problems and countermeasures in the use of egg laying chicken premixes.

1、 Common problems during the use of peak materials

（1） Unreasonable formula combination during product transition

Consequences of arbitrarily adding or reducing soybean meal content:

1. Eggs become larger or smaller.

2. The egg production rate has decreased, especially for chicken herds with high energy demand (body weight not meeting standards, poor uniformity of chicken herds). After adjusting soybean meal, the egg production rate has significantly decreased.

（2） Transition too fast, soybean meal decreases too quickly

Consequences: Eggs become smaller, or sometimes larger or smaller (realization of differences in chicken weight and physique, as well as differences in feed intake).

（3） Stress caused by intensified climate during material replacement

Stress response: strong winds, thunderstorms, sudden temperature changes, too low or too high; Poor breeding environment, excessive dust, high humidity, high ammonia concentration, etc.

Performance: Eggshell color turns white and light; Eggs become smaller and crispy. Individual flocks of chickens only die.

（4） Feces become thinner after material change

Intestinal diseases and excessive heavy metals, which happen to coincide with outbreaks of Escherichia coli or Salmonella infections in chicken flocks (small farm chicks and young chicks that have not been thoroughly treated and show more symptoms when changing materials at the beginning of production), small interruptions caused by excessive addition of stone powder, and inadequate prevention of coccidiosis enteritis in chicken flocks before production, among other reasons, can cause stress reactions.

（5） Poor egg yolk color

Basic diet: Corn soybean meal diet is changed to wheat soybean meal diet.

Performance: Decreased egg yolk color, etc.

（6） The time when the most common problems occur during the use of material replacement

10-15 days is the first level, a period of psychological hesitation, with a try and see attitude;

About 20 days is the second level, a period of psychological judgment, and a decision needs to be made.

Do a good job of advanced immunity, repeat stimulation, use empirical data to confirm the effectiveness of the product, and take the calming pill three times. Is the material used for the first 3-5 day inspection and how is it used? The second empirical induction and the third consolidation effect.

2、 Countermeasures

（1） Provide precise nutrition, maintain the basic nutrition of feed unchanged, mainly maintain consistency in protein (CP15.5-16.9%) and energy (above 2750kcal/kg), or improve the quality and quantity of soybean meal and corn.

（2） Pay attention to the dosage of calcium hydrogen phosphate, maintain consistency with the original premix, and keep phosphorus above 0.32%.

（3） Pay attention to the dosage of methionine and maintain consistency with the original premix.

（4） The amount of sodium chloride used, with an addition ratio of about 0.35%, can cause diarrhea if exceeded or insufficient.

（5） The ratio of stone powder, fine stone powder to coarse stone powder is 1:3.

（6） Stress response can be achieved by adding vitamins E, C, etc., as well as plant extracts, such as Fulexing 211 with a dosage of 1-3kg per ton of feed.

（7） To improve the color of egg yolks, pigments, plant extracts, etc. can be added. For example, adding 1% of Fulexing 217 can improve the color of egg yolks, the quality of eggshells, and the quality of eggs.

（8） Pay attention to pigments, amino acids, and enzyme preparations in the whole wheat diet.

（9） Keep good breeding records for easy identification of causes.

The pre mixed feed for laying hens is a high-tech product that is based on the growth, development, and nutritional needs of laying hens, taking into account the influence of various related factors. It uses advanced equipment and technology to reasonably mix and evenly mix various vitamins, trace elements, amino acids, and growth promoting factors through carriers and diluents. Only by selecting and using the premix correctly and reasonably can the efficient nutritional function of laying hens be fully utilized.