In fact, the old ancestors who wanted to be a professional egg-laying hen were also trained in the above-mentioned similar methods, and they continued to artificially breed, and gradually overcame the nesting performance, increased the egg production, and became professional egg-layers. . When selecting professional laying hens, egg production is the first hard indicator, and there is also an indicator that cannot be ignored. That is the appearance. Many people may think that it is not a layer of chicken? It's all about the same, what's optional. In fact, there is more knowledge here. The size of laying hens is very important, which is directly related to how many eggs can be. What is the size of a tall laying hen? There is an indicator here that must be seen, that is its chest. Pan Yuhua: Well, if you want to choose the hen's chest to be wide, the egg production rate will be gone and the egg production rate will come down. This is a skeleton of a laying hen. There is a skeleton in the chest and this angle is called the chest. Why is the width of the chest wide to affect the egg production rate? Teacher Pan: This is a genetic one. This horn is wide and long flesh grows faster. If flesh grows faster, it lays less eggs. This is genetically speaking that meat grows faster and lays eggs. Performance is anti-correlation, you over-emphasized that my previous increase in meat was high and my egg production rate was low. Over-emphasizing the high egg production rate, the chest was down. The expert's words are summarized as follows: long fleshy chickens lay eggs less, and long fleshy chickens lay more eggs. Therefore, the figure is delicate and not so obese, which is another characteristic of high-producing layer chickens. The fact that you lay eggs and look handsome is an overall characteristic of professional laying hens. You must remember them when choosing them. However, after continuous breeding, there are many varieties of professional laying hens. Their strains and names are also in your mind. There must be a number. Teacher Pan: Generally speaking, professional laying hens nowadays generally mean that one is based on the color of eggshells, brown eggs, and white shell eggs. Generally, these are mainly divided into two kinds, but now there is also a kind of powder. Shell eggs are mainly based on the color of the shell. White shells, brown shells, and powder shells are the three main strains of professional layer chickens in China. In each strain, there are also many mature and fine varieties. Picking layer chickens to choose within this range, varieties Basically there will be no problem.
By 25-year ongoing optimization along with constant research and development, Zhengli vials are designed for to date market trend. Lyo bottom, blowback, crimp neck, screw neck, Injection Vials ,Auto Sampler Vials,flip cap, internal lip, pilfer proof and snap-on, all are included in Zhengli vails selection. All Zhengli vials are manufactured and packed consistent with ISO 9001 and ISO 15378 standard. We are specialized in Pharmaceutical Vials,Pharmaceutical Bottles, Glass Tube Vials ,Injection vials,auto sampler vials
Pharmaceutical Vials,Pharmaceutical Bottles,Glass Tube Vials,Injection Vials,Auto Sampler Vials Ningbo Zhengli Pharmaceutical Packaging Co., Ltd. , http://www.zlpharmapkg.com