First, improve the quality of dairy cows. Try to introduce excellent high-yielding dairy cows while eliminating low-yielding dairy cows. For the introduced cows, it is necessary to use the frozen granules of the high-yielding dairy cows for breeding; for cows with unclear pedigrees, disorderly distribution, serious physiological deficiencies, and cows suffering from reproductive system diseases that are permanently unrecoverable and have long-term infertility, they must be promptly Eliminated.
Second, improve the level of feeding and management. According to the digestive and physiological characteristics of dairy cows, the full price of dairy cows can be reasonably allocated to ensure the supply of energy, protein feed and trace elements. At the same time, we will strengthen management and strictly implement standardized feeding and handling procedures for dairy cows.
Third, control the appropriate ambient temperature. Many studies have shown that the mating rate of dairy cows is related not only to their feeding and management, but also to their rectal temperature and uterine temperature. The climatic conditions before and after the cows' estrus day and breeding day have a great influence on the reproductive rate of dairy cows. Therefore, it is very important to improve the performance of dairy cows by doing a good job of summer cooling and winter cold insulation work.
Fourth, master scientific milking methods. Before milking cows, heat, cold, high humidity, harmful gases and other unfavorable factors should be excluded, and the number of suspended bacteria in the homes should be minimized. When a cow moves from a sleeping position to a standing position, he or she often unconsciously kicks and wipes the nipple with hoofs. When the milk is over-emulsified, the nipples will be eroded, which can easily cause nipple infection. Therefore, timing hoof repair is important to increase the milk production of dairy cows. In addition, bacteria are easily transmitted from cows to cows through the milker's hand. Therefore, the milker should cut his nails, wash his fingers, and fully disinfect before milking. It is better to wear rubber gloves. In order to increase the milk production of dairy cows and reduce the occurrence of tachymaitis, milk should be squeezed out first when milking. Under normal circumstances, even under the crowded 5, that is, abandoned 30 ml of milk to rule out abnormal milk. Because the proportion of young cows suffering from subclinical mastitis is relatively small, milking should be carried out first, then milking the milking cows with a higher prevalence, and finally milking cows with obvious symptoms of infection. Prevent infection. In order to milk more, some people massage the cow's breasts by hand during the post-milking period. This will increase the number of somatic cells in the milk by more than 100 times. In order to kill bacteria attached to the cow's nipple at the end of the milking, the bath disinfection must be carried out immediately after the milking has ended. It takes about 30 minutes for the cow's nipple to be closed after the milk has been squeezed. Therefore, during this period of time, it is necessary to try to keep the cow standing until the teat is again contaminated.
Sodium Methoxide CAS No.124-41-4
Sodium Methoxide Physicochemical Properties
Density 0.97 g/mL at 20 °C
Boiling point 65 °C
Melting point -98 °C
Molecular formula CH3NaO
Molecular weight 54.024
Flash point 11 °C
Exact quality 54.008160
PSA 23.06000
LogP 0.04670
Appearance traits transparent liquid
Vapor density 1.1 (vs air)
Steam pressure 50 mm Hg ( 20 °C)
Refractive index 1.3700
Storage Conditions
1. Storage: sealed and stored in a cool, dry and dark place
2. Sealed in iron drums, 200kg per barrel, stored in
Cool, ventilated, dry place, fireproof, heatproof, prevent
show. Store and transport according to flammable chemicals.
Sodium Methoxide Application
1. Mainly used as raw materials for medicines and pesticides, also used in dyes and chemical fiber industries.
2. It is used as a condensing agent in organic synthesis, as a catalyst in the treatment of edible oils and fats, and as an important raw material for the synthesis of drugs such as sulfamididine, sulfamethoxazole and sulfonamide synergist.
3. Used as an alkaline condensing agent and catalyst in organic synthesis, used in the synthesis of perfumes, dyes, etc., and is a raw material for vitamins B1, A and sulfadiazine.
4. Used as a condensing agent for organic synthesis
5. Fat transesterification catalyst. To change the fat structure, make it suitable for margarine and so on. Must be removed in the final food.
6, mainly used as a condensing agent, strong alkaline catalyst and methoxylation agent, used to prepare vitamin B1 and A, sulfadiazine and other drugs, a small amount for pesticide production. It is also used as a catalyst for the treatment of edible fats and edible oils, especially lard. Also used as an analytical reagent.
7, mainly used in the production of vitamin A1 vitamin B1 long-acting sulfonamide, sulfadiazine, trimethoprim and other pharmaceutical industries, can also be used in the biodiesel industry. It can also be used as an edible catalyst and analytical reagent.
8, mainly used as a condensing agent; strong alkaline catalyst and methoxylation agent, used to prepare vitamins B1 and A; sulfadiazine and other drugs, a small amount for pesticide production. It is also used as a catalyst for the treatment of edible fats and edible oils, especially lard. Also used as an analytical reagent.
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