Before the arrival of winter, a certain amount of fodder should be stocked for feeding. Generally, each sheep needs 300 to 500 kg of hay and 100 to 150 kg of concentrate. Feeding time starts from November until the beginning of the second year of May. In the winter, sheep's fine feed is soybeans, bean cakes, corn, barley, wheat bran, rice bran, and so on. The fine material must be crushed and the bean cake should be soaked and fed. The mixing of 30%~40% of high-quality hay powder in concentrates can increase the utilization rate of hay, help digestion and absorption, and also save feed. Silage corn stalks, carrots, foraging sweeteners, etc. are also good feed for winter sheep. Feeding these sheep with good juicy feed in the winter can fully supply sheep's sugar and various vitamins, and increase the amount of milk produced by the ewes. In particular, pregnant ewes feed three times in the early, middle and late nights, and feed the concentrate, silage, and stalk at the same time in the morning, noon, and evening respectively, which is beneficial to the absorption and utilization of nutrients. About 50 kilograms of adult sheep, each need to feed 1.5-2 kilograms of hay, usually after the return of the flock to replenish feeding, feed concentrate and chopped root feed, evenly mixed together, then add salt, stone powder , First sprinkled in the feed tank, and then put the sheep into the circle to eat. The pregnant ewes feed 1.5 kilograms of hay each day, 1.5 kilograms of silage and 0.5 kilograms of concentrate. Nucleic Acid (DNA/RNA) Extraction Kit
1. Introduction Nucleic Acid Extraction Reagent Kit,Nucleic Acid Extraction Kit,Covid-19 Nucleic Acid Extraction Reagents,Nucleic Acid Test Kits Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:
1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.
2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.
3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.
4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.
3. Shelf life
Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.