The digestion of feed by cows depends on the fermentation of microorganisms in the rumen, and the microbes in the rumen need a relatively stable environment. The method of feeding quails is not conducive to the cow's rumen health, which is not conducive to digestion. The best solution is to Feeding a variety of feeds properly, each feed should not be fed too much. The specific feeding amount is as follows:
Silage
Each cow feeds 20-25 kg per day.
2. High quality hay
The cows that eat silage are best fed with high-quality hay (green hay), and the daily feed for each cow is no less than 4 kg. At present, most areas lack the green grass. Therefore, the grass season must be given a lot of time to dry the hay and do not let the cows eat all the grass.
3. Root class
Such as carrots, due to high moisture content should not be fed, feed 3-5 kilograms per head per day.
Fresh green grass
Every day cows do not exceed 12 kilograms.
5. Rapeseed cake, cottonseed meal
Do not use more than 10% of dairy cow feed.
6. Accessories
Such as brewers' grains, corn residue, bean curd residue, apple pomace, each day should be controlled at about 10 kilograms.
7. Fine material
By feeding 2.5-3 kilograms of milk to feed 1 kilogram of concentrate, the high milk production gives more concentrate, and less milk produces less concentrate. However, no matter how high the milk production of dairy cows, the amount of concentrate feed per day cannot exceed 12 kg, and in the case of large amount of concentrate feed, increase the number of feedings to reduce the rise of rumen acidity.
Product Family Description
Ideal for Alignment and Machine Vision Applications
Multiple Fan Angles Available
Creates Uniform, Straight Line
Powell Lenses, also known as Laser Line Generator, create straight, uniform laser lines by fanning out collimated beams in one dimension. This can be contrasted with standard cylindrical lenses, which produce diverging laser lines with Gaussian intensity profiles. Fan angles of 10°-90° are available.
The Powell Lens can be widely used in alignment, machine vision systems, construction and process control fields, convert laser beams into uniform, straight lines. Unlike cylindrical lenses, which generate Gaussian beam profiles with hot-spot center points and fading edges, Powell Lenses provide an even distribution of energy along the length of the entire line.
We provide Powell lens in two precision, one is High Precision Powell Lens; the other is Standard Technology Powell Lens, Please see below to distinguish the two precision powell lens.
High Precision:
Powell Lens
Material:H-K9L
Diameter:9mm
Fan angle:10°-90°
Tolerance:+/-1°
Beam:1mm-5mm(±0.1%)
S / D:40/20
CA:> 90%
Line straightness:<0.1%
Line uniformity:<20%
Coating:Uncoated AR BBAR
Standard Technology:
Powell Lens
Material:H-K9L
Diameter:9mm
Fan angle:5°-110°
Tolerance:+/-3°
Beam:1mm-5mm
S / D:60/40
CA:> 90%
Line straightness:<0.1%
Line uniformity:<25%
Coating:Uncoated AR BBAR
Powell Lens,Optical Powell Lens,Custom Optical Powell Lens,Optical Glass Laser Line Gennerator
ChangChun Worldhawk Optics Co.,Ltd , https://www.worldhawk-optics.com