Coincidentally, laying hens can lay eggs without feeding fishmeal.

In order to maintain a good hen and make the hens more productive and stable, in addition to having a good breed of hens and good feeding methods, the quality of the feed is the most critical. The combination of diets for laying hens is generally best for satisfying the needs of the protein when meeting energy needs. In fact, there are also exquisite chicken protein feeds. Accurately speaking, the nutritional needs of chicken for protein are the nutritional needs of amino acids. Therefore, in the hen's diet, only the vegetal protein is fed to the pods. The chickens cannot lay more eggs, but they also need to feed appropriate animal protein. Because the essential amino acids contained in the vegetable protein feed are incomplete, and the amino acid is not complete, the high-yielding performance of chicken egg production does not play a role. In pods, there is a major lack of essential methionine, and the amino acids necessary for chicken in fish meal are all contained, especially the lack of methionine in soybean meal in fish meal. Therefore, the problem is solved by adding fishmeal to the layer's diet. The effect of chicken eggs is just as good. The quality of fishmeal is good, the composition of amino acids is balanced, and it needs to be closer to the chicken body. The utilization rate is high, and the ratio of calcium to phosphorus is suitable. The content of selenium and vitamins is also high, which is very beneficial to the growth of chickens, egg production, and reproduction. It is the ideal animal protein feed for feeding chickens. Feeding chickens with fish meal diets can produce more eggs, producing 250 to 260 eggs a year.

A few days ago, most chicken farms used chicken meal to feed their laying hens in order to lay more eggs for better economic returns. As everyone knows, with fish meal feeding chickens, although there are benefits of fish meal feeding chickens to produce eggs, the cost of feeding chickens with fish meal is too high, mainly due to the high price of fishmeal, especially the price of imported fishmeal containing 80% of fish and 20% of fishbone. Higher, see less money back, and its economic benefit is lower than the diet without fish meal fed chicken. This is not commensurate with the rapid development of commercially-oriented laying hens in the economic era. Therefore, in the feed formulation of large-scale chicken farms in many countries in Europe and America, most of them no longer use fishmeal (called no fish meal diet). It is not difficult to prepare diets without layering fishmeal for laying hens, mainly for the deficiency of methionine in vegetal protein pods, the lack of vitamin B12 and vitamins A and B, and in the diet of corn-bean pods when diets are not prepared with fishmeal. Methionine and vitamin B12 should be added, and the amount should be 18%-20% of the diet, plus some more. In this way, the actual needs of the chicken for the protein can be met, the composition of the amino acid can be balanced, and the fish meal can be replaced instead of the fish meal, thereby achieving the purpose of making the layer chicken more productive. One year can also produce 245 -250 eggs. This also results in fewer than a dozen eggs compared to the number of eggs laid by fish meal. Feeding chickens without fishmeal can greatly reduce the cost of fishmeal, and its economic benefits are much higher than the actual income of laying hens fed with fishmeal. Therefore, there is a great deal of calculation, or do not use fishmeal to make more money than feeding fish with fishmeal. This broke the claim that animal proteins cannot be replaced by other substances. In fish meal-free diets, methionine is not added, and betaine can be used instead of methionine.

Zhang Hongyou et al. (1998) used betaine instead of 50% or 100% synthetic methionine in diets to feed egg breeder chickens. The egg production rate, egg weight, fertilization rate, and deadweight rate were not significantly different from the control group. Significant. Wang Ruojun et al. (1999) used betaine hydrochloride instead of 50% or 100% synthetic methionine in the diet of Hyland brown laying hens to slow down the egg production rate and increase the feed conversion rate. All indicated that the use of betaine instead of 50% or 100% of the synthetic methionine in the diet had no adverse effect on egg production performance and nitrogen metabolism. It is also feasible to achieve the purpose of producing more eggs.

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