Choosing the right piglet size pigs must choose to raise “three yuan†crossbred piglets. The best is to use Changbai and Yorkshire pigs with long waist, wide chest, short mouth, full hips, thick limbs, and food for grab food. It takes about 160 days to reach 90 to 100 kg, shortening the fattening period by 20 to 50 days.
The pigs reared in separate circles should be kept in separate circles after 60 days of age, with 2 to 3 pigs per lap, so as to avoid chasing and running energy in the outdoors.
Castrated 30-day-old boars and 40-day-old gilts were castrated in a timely manner. They were 15% heavier than the customary 60-day-old grazing, and the wounds healed quickly, shortening the fattening period by about 20 days, and saving feed by 20%. about.
Timely deworming stomach piglets drive the first insects at 60 days of age, and then once every 2 to 3 months to repel insects, according to pigs per kilogram of body weight with anti-creeping or insect repellent net 15 to 20 mg, a feeding seasoning, Repel internal parasites. If there is swine fever, 10 g of salt, 10 ml of kerosene, and 20 ml of warm water can be mixed and applied to the surface of the pig to kill insects. At the same time as deworming, 1 kg of quicklime was dissolved in 5 kg of water for each pig. The above supernatant was fed and fed twice a day. Two to three days of gastric lavage was used to remove various insect pests. One week later, pigs were given a piece of rhubarb soda per kilogram of body weight (maximum no more than 15 tablets), and the stomach was fed in three batches. In this way, each pig can increase the weight of 10 to 15 kilograms and shorten the 25 to 40 days of fattening period.
Scientific feeding is based on the growth and development laws of the pigs that grow slowly in the early stage, fast in the middle stage, and slow in the later stage. In order to obtain higher feed remuneration, linear breeding methods should be adopted to shorten the feeding period and save the feed. At the same time, it is necessary to implement fine, green, and coarse feed mixes, and to implement dry feed for raw feeding; in the number of feeds, two feeds should be taken daily to reduce the consumption of energy and feed due to multiple feedings to stimulate pig movements. Loss of throwing, reducing feed utilization.
The empty breeding phase of sows and the first 80 days of pregnancy can be based on green fodder, high-quality roughage, and bad-slag feeds. Only about 1 kg of concentrate is used each day. One month before labor, feed 2 to 3 kg of concentrate every day. In this way, the normal development of the fetus is guaranteed, and the sow can save 60-90 kg of concentrate feed for each pregnancy.
The timely mating of the piglets at 60 days of weaning is advanced to 40 to 45 days, which can promote the early estrus and early mating of the sows, shorten the period of idleness, and relatively save the feed.
Strictly prevent the epidemic disease In spring and autumn each year, timely injection of "triple seedlings" to pigs can effectively control the three major diseases of swine fever, swine erysipelas and swine plague, reduce the mortality rate and relatively reduce the consumption of materials.
When the weight of the hog weight is 20 to 90 kg, the daily weight gain rises linearly. After 100 kg, the growth rate is slow, and the daily weight gain gradually decreases. Therefore, the slaughter of the hog when raising about 90 kg is good.
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NVR has different product forms. Although its core function is the capture, storage, management and forwarding of network video streams, different companies have different designs to complete these functions and have their own characteristics. There are mainly three types of NVR products.
The first is the PC server based NVR software product (Software Only), that is, the manufacturer provides the NVR software plus license mode, which can be installed on any standard PC or server that meets the requirements.
The second is the NVR overall solution of software and hardware integration provided by the manufacturer, that is, the manufacturer installs the NVR software on its customized PC server, which is the so-called Turnkey Solution product.
The third is embedded NVR products, namely embedded devices based on embedded hardware platforms and operating systems; In addition, there are storage management integrated devices developed by storage device manufacturers, which are not the mainstream NVR form.
In terms of stability, although the reliability of PC based NVR system is not as high as that of embedded NVR system, compared with PC based DVR system, the PC based NVR system has relatively simple functions, fewer failure links and better stability than PC based DVR system.
In terms of scalability, as the PC based NVR system is based on the general PC platform and the general operating system, its hardware interface is universal, open and standardized, which is easy to be compatible with other hardware, and software development is also relatively convenient. However, due to the high hardware integration, single interface, poor compatibility with other hardware, and weak incidental functions of embedded software, the secondary development of embedded NVR is relatively complicated.
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