Synthetic biology is the design and construction of biological devices and systems for useful purposes. It is an area of biological research and technology that combines biology and engineering, thus often overlapping with bioengineering and biomedical engineering.istinguished from older methods of transgenics by the use of either outright synthesised DNA or DNA which has been modified heavily to become more predictable and standardised. A heavy focus on modular design of genetic parts makes synthetic biology more of an engineering discipline than a form of pure science.
If the hay were 88% dry matter, on an as-fed basis, cows would eat about 32 (28 pounds/.88) pounds daily. If there were 200 head of cows in the herd, it would take about 3.2 ton of this hay per day [(200 head x 32 lb/hd/da)/2000lb] not accounting for any waste.
As a rule of thumb, a cow will eat 2 to 2.5 pounds of hay per day for each 100 pounds of body weight (about one 30- to 40-lb. bale per day). If you feed grain, the usual is 16% dairy ration, which will balance well with most pasture or hay. Another rule of thumb is to give 1 lb. of grain for every 3 lbs. of milk.verage milk production is about 2 gallons each day when the calf nurses during the days but not at nights, or 4 to 5 gallons each day when a calf is not nursing. The butterfat content is 4 to 5% even when the cow gets little or no grain.