There are three ways to preserve bovine colostrum, namely natural fermentation, acid fermentation and low temperature preservation. Natural fermentation and acid fermentation are the simplest and most widely used. We will let you know the preservation and maintenance methods of bovine colostrum. When the temperature exceeds 20℃; 1% propionic acid or 0. 1% formalin can be added to colostrum to prevent nutrient loss and corruption. After adding acid, stir evenly, seal and ferment naturally. It can be fermented within 2-3 days, and the use time is the same as that of natural fermentation.

Filter some compact colostrum with gauze, pour it into a clean plastic bucket, cover it, and ferment it in a fresh place. Stir 1-2 times a day with some clean wooden sticks to avoid solidification. At ambient temperature 10- 15' Joshua-8451; Fermentation only needs 4-6 DAS. . Heat skim milk to 56' josey8451; +0; In a plate heat exchanger, put it in an incubator for 30 minutes, and then cool it to 37 SOLA8451; Adjust pH to 4.5 by adding acid, or add chymosin to coagulate casein, and then heat skim milk to 56℃; Washing casein clots twice with deionized water, centrifuging, and removing casein to obtain a clear solution. The milky white clear liquid and clarified clear liquid were filtered by Seitz or filtrox filter respectively to remove casein particles and avoid equipment blockage during ultrafiltration.

The cold storage period of colostrum is about 7 days. If the calf's mother suffers from mastitis or dies after birth, the calf can't eat colostrum, so it can be replaced by other healthy cows with very close birth time, or the preserved colostrum can be replaced or fed with artificial colostrum. The preparation and feeding methods of artificial colostrum are as follows: oxytetracycline 100mg or chlortetracycline 100mg and vitamin A 2000 units are added to each kilogram of normal milk; Colostrum refers to Vac milk within three days after delivery. The content of protein in bovine colostrum is high, and the content of fat and sugar is low. Bovine colostrum is not only nutritious, but also contains a lot of immune factors and growth factors.