Kelp is rich in amino acids, iodides, vitamins, minerals and active ingredients that stimulate animal growth. Moreover, the substances contained in kelp and most trace elements are present in an organic state, which is easier to absorb than inorganic minerals. Therefore, the use of kelp powder as a feed additive can effectively improve the nutritional structure of the feed, and can significantly promote the production performance and reproductive capacity of livestock and poultry, and at the same time improve the quality of livestock and poultry products, and achieve good application in production practice. effect. It is briefly summarized as follows for reference.
1. Feeding laying hens to produce high iodine eggs: adding 2% to 6% of kelp powder to the hens' feed. After one week of feeding, the high iodine eggs produced have a iodine content ten times higher than that of ordinary eggs. The content of vitamin A is 17% to 46% higher than that of ordinary eggs, and it becomes a high-iodine egg with medical value.
2. Feeding cows: Adding 5% of kelp powder to the cow's feed can increase the milk yield of the cow by more than 1%, and also increase the cow's estrus rate and conception rate.
3. Feed the sow: 500 grams of kelp soaked and chopped, add 50~100 grams of lard, boil the soup to feed the sow, the first month after the sow is born, feed once every 7~8 days, second Feeding every 4 to 5 days in a month can greatly increase the amount of milk in the sow. If 500 to 1000 grams of kelp and 2500 to 3000 grams of water are boiled in the pot, the soup can be fed to the sow for three meals, which can promote the rapid recovery of the diet after the sow is born.
4. Feeding weaned piglets: Adding 2% kelp powder to the basal diet of weaned piglets for 90 days, can increase the daily weight gain of piglets by 23.6% and feed conversion rate by 13.22%.
5. Feeding the egg duck: Adding 5% of the kelp powder to the feed of the egg duck can increase the fertilization rate of the egg by 27.84%, and the hatching rate of the egg increases by 13.98%.
6. Feeding meat duck: Adding 2%~4% kelp powder in the meat duck feed can increase the survival rate of ducklings by 6%~9.6%, and increase the body weight by 204~263g at 7 weeks of age.
7. Feeding: Adding 5% of kelp powder to the egg to feed the egg tart can increase the egg production rate by 5.1%, the egg rate by 2.3%, the mortality rate by 0.7%, and the egg yellow color to deepen.
8. Feeding fish and shrimp: Adding gelled kelp powder to the feed of fish and shrimp can not only increase feed nutrition, but also coagulate the feed. In addition, it can also help the growth and disease prevention of fish and shrimp.
A pipette, also known as a pipette gun, is a device used to quantitatively transfer liquids. When conducting research in analytical testing, a small or trace amount of liquid is generally removed with a pipette. Pipettes can be divided into gas piston pipettes (Air-displacement pipette) and external piston pipettes (Positive-displacement pipette) according to the principle. Gas piston pipettes are mainly used for standard pipetting, and external piston pipettes are mainly used to handle special liquids such as volatile, corrosive and viscous. Many people ignore the correct use of pipettes and some of the details.
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