Symptoms The color of the grains on the ears of the maize showed a difference, showing a normal color and a purple color, and pale yellow and dark yellow.
Causes One or more layers of cells under the skin of the corn kernel are called protein layers or aleurone layers. The aleurone layer of ordinary field corn is colorless, but in a specific genetic background, as long as there are at least nine dominant genes, the aleurone layer will show purple. The offspring of the five complementary genes in the nine genes will be separated from each other by a certain proportion of color particles. Below the maize grain aleurone layer is the endosperm layer. Due to gene mutations, chlorophyll and carotene change the color of the endosperm and appear yellow, light yellow and white. If the color of the two inbred endosperm is yellow, the color of the hybrid seed is yellow; if the color of the endosperm of the two inbred lines is light yellow, the color of the hybrid seed is light yellow; if the two are self-crossed The color of one endosperm is yellow and the other is light yellow (or white), then the color of the hybrid seed is yellow. According to this point, when using two inbred lines with different endosperm color, it is possible to determine the level of self-transmission and determine the quality of seed by different colors of the grains.
Control methods The occurrence of the disease is controlled by genetic genes. Pay attention when breeding new varieties of corn.
Mid-set Milking Parlor System
Mid-set Milking Machine is one of the most widely used devices. Using automatic upgrade scaffolding systems, short working line, milker milking efficiency is maximized, as oxtail high density, relatively narrow Milking Parlor construction area, a significant reduction in construction costs and space. Device according to user needs can be equipped with the world`s most advanced Afikim pasture management software has becomed the most practical high-end devices.
Currently we work with international companies: Italian Interpuls, USA BOUMATIC company, Israel afimilk companies. My company currently produces and sells a pipeline milking machine, flat type, fish bone style. Mid-mounted, parallel, rotary and other types, its technical characteristics are as follows:
1. Advanced dual vacuum milking system(optional equipment) imitation calf feeding low vacuum(42-45Kpa) cow nipple sucking massage to make cows in the best condition to complete the entire milking process; squeezed milk is specifically high vacuum(60Kpa) timely and quickly pumped into milk pipeline, effectively ensure the stability of the milking system pressure.
2. Effective control of mastitis in cows before milking pulsation than technology meet physiological characteristics of pulsation than the technology front, the front breast area ratio of small pulsation ratio breast after large(generally breast area after area than in the previous 15% more milk); breast area while completing the four milking, milking effectively avoid the occurrence of air, reducing the incidence of mastitis.
3. Prevent overcrowding and premature removal from the design collection cup milk tubes are used to seat all the transparent design, so it can be visually determine whether there is over-milking premature phenomenon and the phenomenon of de-cup;
4. Unique automatic off cup system(optional equipment) set milk Block built vacuum shut-off valve, auto-off cup without vacuum residue will not produce cow nipples pulling force, but also off the cup action is very gentle,, collection of milk will not fall to the ground seat.
5. Advanced air cleaning mixed feeding device that can impact the entire column to form the pipeline flow scrub the entire pipeline, effectively improve the quality of the milk.
6. Hassle U-tube design U-shaped connecting pipe so that the whole milk collection device cleaning without leaving clean corners, to ensure the quality of milk.
7. Pasture management software(optional configuration) automatically precision measuring devices, computers permanent data storage.
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Henan Leo Husbandry Equipment Science and Technology Co.ltd , https://www.chinaleodairy.com