As an important part of animal feed, vitamin supplements are getting more and more attention. However, vitamin feed additives are very diverse, which makes many people feel helpless and helpless, and can not correctly understand vitamin feed. This means that they are prone to errors when they are used, with serious consequences. This article will explain the various vitamin feed additives.
China is a big country in the world for laying hens. The commodity hens account for 40% to 45% of the world's stock. In recent years, the annual output of eggs is about 20 million tons. In the collection, grading, packaging, transportation, storage and processing of eggs, eggs are inevitably affected by external forces, resulting in cracking or cracking of the eggshell, resulting in losses of more than 500 million yuan per year, to producers and wholesalers. The economic losses caused are very large. At this time, the influence of trace elements on eggs is crucial. This paper will review the existing mechanisms of the effects of trace elements on eggshell quality.
Amino acid has the effects of meeting animal needs, promoting animal growth, improving amino acid balance, improving feed utilization, and saving protein resources. It can improve the nutritional value of plant protein and its feed, and is conducive to the development of protein feed resources. For example, adding restricted amino acids to meal meal feed can replace fish meal, thereby reducing feed costs and improving meat quality. For example, adding lysine can improve carcass quality and lean meat percentage.
