Feeding cows can not be less hay

Hay refers to the timely harvesting of wild grasses or artificial cultivated grasses that have been dried on the ground, dried by straw, or mechanically dried. It is characterized by green and blue color, rich in protein, minerals, and vitamins, and has good palatability. Compared with succulent feeds and concentrate feeds, hay is bulky, contains many celluloses and is difficult to digest, but it is an important part of the diet. In addition to supplying dairy cows with nutrients, hay also balances physiologically and promotes gastrointestinal motility. In particular, in the early spring when it is converted from grazing to grazing, cows often diarrhea because of the low consumption of cellulose. The remedy is to supplement the cow with 2 to 3 kg of hay each night. Hay is also an important raw material for forming milk fat. During the process of breaking down cellulose by rumen microorganisms, volatile fatty acids, such as acetic acid, propionic acid, butyric acid and fatty substances, can be produced. These substances are important raw materials for synthetic milk fat. If the amount of hay is low, the milk fat percentage of the cow will decrease. In summary, it can be seen that hay is the most important forage for dairy cows. Dairy cows have a large rumen volume and have the special function of eating large amount of hay. The daily feed intake can reach more than 3% of the cow's weight. The hay in the diet should not be less than 5 kg. The cows should be allowed to feed freely. The moisture content of hay is less than 15%, green color, soft stems, more leaves, less impurities, should be tied or stored in a storage shed to prevent nutrient losses. Hay should be chopped when feeding and it should be about 3 cm in length.

classification The editor A drill can be divided into three categories: hand electric drill, Impact Drill, hammer drill. Minimum 1 hand Electric Drill: power, use scope is limited to wood drilling and when an electric screwdriver, part of the hand electric drill can according to the purposes to specialized tools, use and model more 2. The impact drill, impact drill impact mechanism have fangs and ball type two kinds Hand electric drill Hand electric drill . Ball type impact electric drill by the moving plate, plate, steel ball, etc. Dynamic plate through threads are connected to the spindle, with 12 steel ball; Fixing use pin fixed on the chassis, with 4 ball, under the influence of thrust, 12 steel ball along the four steel ball rolling, the carbide drill rotating impact movement, can on the brittle materials such as brick, block, concrete drilling. Release pin, make the fixing servo plate rotation, no impact, to make a general electric drill. 3. The hammer drill, electric hammer: can drill holes on any of the material, the most widely use scope. The three electric drill price from low to high alignment, function has said

electric hand drill

electric drill, hand drill, portable drill, electric hand drill

ZHE JIANG ULITE TOOLS MANUFACTURE CO.,LTD , http://www.ulitepowertool.com