Cowhouse temperature The most suitable temperature for dairy cows is 12～14°C. The most suitable temperature for pregnant cows and lactating dairy cows is 16～20°C. When the cowhouse temperature of lactating dairy cows is higher than 24°C or lower than -4°C, the milk yield is reduced; The optimum temperature is 35-38°C. Drinking temperature Lactating milk cow drinking temperature: 1 ordinary drinking water temperature: cold water for the cooling factor, dairy cows drink cold water is the consumption of body heat, affecting milk production. When drinking water below 8°C, the milk production is significantly reduced. In spring, the drinking temperature of dairy cows is maintained at 9-15°C, which is 0.57 liters more milk per day than dairy cows drinking -2°C, which means that the milk production rate is increased by 8.7%. 2 Drink wheat bran water temperature: The dairy cow feels thirsty and loses body temperature due to loss of a lot of water after birth. At this time drink bran water instead of drinking water, the temperature is higher than the body temperature of 1 ~ 2 °C (milk cows normal body temperature 37.5 ~ 39.5 °C), there is added body fluids, warm body effect. Drinking cold water is forbidden, otherwise it may cause diseases such as retention of tires and colds. Yak drinking temperature: 1 general drinking water temperature: calf body temperature is higher than adult cattle, so the drinking water temperature should be higher than that of adult cattle, general drinking water to 35 ~ 38 °C is appropriate. 2 Yak milk temperature: When yak artificial breast feeding, regardless of colostrum or regular milk, should be cooled after heating and disinfection to 35 ~ 37 °C feeding, high or low have adverse effects. In addition, the production of "small white beef" requires the use of breast-feeding male calves that are not emaciated. From birth to 100 days of age, it is entirely dependent on cow's milk to provide nutrients. Milk temperature should be controlled within the range of 40 to 41°C, and shenwen should be maintained at 18 to 20°C. °C. Scrub breast water temperature Before milking cows, each cow needs to be soaked in warm water of 45-50°C with a dry towel, and the breasts and nipples are thoroughly scrubbed, and then the breasts are massaged. After 1 to 2 minutes, the breasts swell, the nipples swell, the milk veins bulge, and the breast splanchnic muscles relax. The reflexes that have produced a "milk" have begun and the milking can begin immediately. Do not scrub the nipples with hot or cold water, otherwise the cows will feel uncomfortable and will have a suppressive response to “milk†reflexes, ie, reduce milk production. Temperature of milk preservation and disinfection Milk storage The newly-extruded milk has a temperature close to the bovine body temperature and is a breeding ground for microorganisms. If it is stored without cooling, it will deteriorate rapidly. Therefore, the container must be cooled immediately by immersing it in cold water, and the temperature of the milk should be reduced to 4 to 10°C. Milk disinfection Milk contains a variety of harmful microorganisms, such as E. coli, Bacillus subtilis, fluorescent bacteria, butyric acid bacteria. If not sterilized, these harmful microorganisms multiply, causing the milk to deteriorate. Disinfection mainly adopts heat sterilization method. In order to make milk contain non-high-temperature nutrients such as amino acids, vitamins, etc. are not destroyed, milk disinfection is mainly used "non-high temperature" heating and disinfection, Pasteur disinfection method is: heating the milk to 75 ~ 80 °C, hold for 15 to 30 seconds, stop heating immediately. Semen storage temperature Sperm is not afraid of heat and cold, 54.5 °C can make sperm inactivation, on the contrary, low temperature can make it stop motion, reduce energy consumption, to be able to survive for a long time. In the past, most semen used for artificial insemination were stored at room temperature or cryogenic, and the storage time was very short, thus greatly limiting the superiority of artificial insemination. Since the 1960s, liquid nitrogen has been used, with a temperature of -196°C. Its conception rate is similar to that of fresh semen, and this method has been widely used in the cattle industry. Preheating temperature of bovine frozen semen When inseminating cattle, the frozen semen needs to be thawed, and thawing requires warm water. The temperature of the water should be accurately controlled at 41 to 50°C, and the temperature difference between the upper and lower temperatures should not be greater than 10°C to ensure that the thawing sperm motility is not affected and the temperature will not be affected. Improper and reduced fertilization rate. In experiments with yellow cattle, thawing of frozen semen at a temperature of 41°C is thawing at a temperature of 38°C, which can increase the rate of female birthing by 33.3%. Onsite Oxygen Cylinder Filling System
Oxygen Cylinder Filling System
With PSA principles, ETR oxygen cylinder filling system can produce 93%±3% purity oxygen gas from compressed air directly. ETR oxygen cylinder filling system is consisted of Atlas screw air compressor, refrigerated air dryer, compressed air filter, air buffer tank, ETR oxygen plant, oxygen buffer tank, oxygen booster, cylinder filling station and HMI control cabinet.
Compressed air is purified through the air dryer and filters to a certain level for main plant to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The plant produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±3% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure. With an oxygen booster, the oxygen pressure can be to 150bar and fill in cylinders.
Onsite Oxygen Cylinder Filling System,Oxygen Refilling System ,Oxygen Cylinder Filling,Oxygen Refilling Machine Hunan Eter Medical Co., Ltd. , https://www.eter-tech.com
The best temperature for raising cows in spring