Grape residue left after grape wine making can not only replace cornmeal, but also has a good effect. According to scientific tests, in the dry matter per kilogram of grape slag, it contains 5.7 MJ of digestive energy and 86 g of digestible protein. Crude protein 13.2%, crude fat 13.2%, crude fiber 29.4%, calcium 0.67%, phosphorus 0.32%, also contains a variety of vitamins and trace elements. Compared with every kilogram of corn, the digestible protein is 32g more, 3.7% more crude protein, 0.65% more calcium, 0.09% more phosphorus, and 1.57% more lysine. Therefore, in the current situation that the supply of corn is in short supply and the price is high, it is indeed a good method to replace the cornmeal feed with cheap grape slag. To feed pigs with grape residue, it is better to dry the grape stalks into dried grape stalks and crush them after processing, and replace them with corn hulls to make mixed feeds. The proportion of the mixed feed is generally 10% to 20%. If the proportion is large, it is necessary to add a suitable amount of green and juicy feed. In a pig farm experiment, in the mixed feed, about 15% of dried powdered grape slag was used instead of cornmeal to feed the pigs. Each head of slaughtered pig can save about 50kg of corn on average and reduce the cost by more than 20 yuan. Solar Traffic Light is a signal indicating product that converts solar energy into electrical energy. It is composed of solar cells, controllers, traffic signals, maintenance-free batteries, signal lights and other main components. Solar Powered Traffic Lights,Solar Traffic Light Blinker,Solar Traffic Signal Light,Solar Signal Light Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com
Compared with ordinary signal lights, solar traffic signal lights are more environmentally friendly and energy-saving. Because of their power storage function, there is no need to lay signal cables during installation, which can effectively avoid power outages caused by construction. Therefore, they are more and more widely used. application.
Solar traffic light is a signal indicating product that converts solar energy into electrical energy. It is composed of solar cells, controllers, traffic signals, maintenance-free batteries, signal lights and other main components. Its main features are as follows:
The light source adopts high-brightness LED, the light emitted is monochromatic light, so there is no need to use color chips to produce red, yellow, and green signal colors (the emitted light is directional and has a certain divergence angle, which can abandon the traditional Aspheric mirror used in signal lights. This feature of LED solves the phantom (commonly known as false display) and color fading problems of traditional signal lights, and improves light efficiency.
The effect of grape slag feeding pigs is good