1. Calcium deficiency: We all know that the production of laying hens needs a lot of calcium to form eggshells and supplement the needs of the body. If the feedstuff of laying hens is deficient in calcium, they will produce thin-shelled eggs or soft eggs. A chicken feeds 50-70 grams of feed every day, and the utilization rate of calcium in the feed is only 60%. So it is not enough to rely solely on calcium in the feed during laying hens. It is necessary for breeders to supplement calcium specially to improve the calcium content in the body of laying hens.
2. Phosphorus deficiency: In feed nutrition, phosphorus plays an important role in the formation of chicken bones, eggshells and somatic cells, and in the utilization of carbohydrates, fats and calcium. In particular, the growth and production of laying hens need more phosphorus. Generally speaking, the requirement of phosphorus in feed for laying hens is 0.6%, and the available phosphorus should contain 0.5%. Therefore, 1% - 2% bone meal or calcium phosphate should be added in the feed to supplement the deficiency of calcium and phosphorus. In addition, the proportion of calcium and phosphorus should be reasonable.
3. Lack of vitamin D: Even if the diet of farmers is adequate and reasonable, the lack of vitamin D will also hinder the absorption and metabolism of calcium and phosphorus, resulting in small, deformed, thin and soft eggs, decreased egg production and hatchability. Therefore, the most economical and effective way to obtain vitamin D is to let chickens receive more light, so that 7-deoxycholesterol contained in skin and feathers can be converted into vitamin D3 after ultraviolet irradiation and absorbed. During the feeding process, total breeders can choose to use cod liver oil to obtain vitamin D for laying hens.
4. Chicken house temperature: the control of the temperature in the henhouse will directly affect the quantity of laying eggs and the quality of eggs. If the temperature in the henhouse is too high or too low, it will affect the quality of eggshells. Now it is summer, and the temperature is high. If the temperature in the henhouse is higher than 32 C, the hens will have difficulty in heat dissipation, and their appetite will also drop, resulting in a decrease in their intake and the hens will not absorb the standard nutrients. It is easy to produce thin shell or soft shell eggs, so breeders must control the temperature of the henhouse. In addition, breeders can choose to add 0.5% - 1.5% baking soda to the feed for mixed feeding, which can improve the strength of the eggshell and greatly reduce the appearance of thin and soft shell eggs.
5. Continuous laying: If the laying hens lay eggs continuously for a long time, it will easily lead to the decline of physiological function, often making the eggshell thinner or producing soft-shelled eggs. In this case, breeders should pay attention to improving feed quality, and pay attention to increasing protein nutrition in feed, strengthen the feeding management of laying hens, and promote laying hens to restore normal physiological function as soon as possible, in order to ensure the normal laying of eggs.
Layer chicken equipment used in Vietnam help farmers save lots of money and labors.