国产女人18毛片水,成人免费淫片免费观看,日韩精品久久不卡中文字幕,美女一级毛片直播,欧美综合色区,国产精品久久久久aaaa,亚洲日韩精品欧美一区二区

As we all know, when using duck raising equipment to raise ducks, the feed ratio is the key factor for duck raising. If the feed ratio is not appropriate, it may cause malnutrition or even slow growth of duck seedlings. Therefore, we must pay attention to the feed ratio of duck raising equipment. Today, we have compiled some skills about feed ratio to share with you.
Since it is self-made feed, the proportion of various nutrients in the feed needs to be controlled by itself, so how to control the proportion of what should be put?
Corn
The name of "king of feed" is not white. Corn is very important when preparing feed. The corn content in many feeds can even reach more than half, which shows the status of corn in feed. The effective energy value of corn is very high, and corn has good palatability and high digestibility for poultry.
What's missing is the low protein content, the imbalance of essential amino acids, and the lack of mineral elements and vitamins, so although corn is good, it still needs other feeds to feed with each other.
Wheat
The crude protein content of wheat feed is more, the amino acids in wheat are more comprehensive than other grains, the vitamin B group is more abundant, and wheat is easy to digest, so the energy value of wheat is next to that of corn. However, the disadvantages of wheat feed are also obvious: the content of vitamin A, vitamin D and various minerals are less, and the anti nutritional factor r-glucan and xylan in wheat can reduce the digestibility of duck feed, and even cause diarrhea of duck feed, so it is a better choice to add corresponding enzyme preparation in Wheat feed.
sorghum
The composition of sorghum is similar to that of corn, but the quality of protein in sorghum is poor, and there are more tannins in sorghum, which will also affect the absorption of egg quality and minerals. Therefore, sorghum should be used as little as possible in the configuration of feed.
Paddy
The husk of rice contains more crude fiber, but the crude protein is less, and the energy is lower, so the proportion should not be too much.
Bran
Bran feed is a by-product of processing rice or flour from grain seeds. The content and quality of crude protein are between legume seed and Gramineae seed. The content of crude fiber and crude fat is higher, but it is easy to deteriorate. Most of the phosphorus in the mineral is in the form of phytate, and the proportion of calcium and phosphorus is unbalanced. In addition, the bran feed has a wide source, soft texture and good palatability
The above five materials are often used in the configuration of duck raising equipment, but other things need to be added to the feed, such as antiviral drugs or other nutrients, so the above is only for reference, and the specific feed ratio of duck raising needs information professionals. Duck equipment manufacturer.