Sow pseudopregnancy means that the sow does not show obvious sympathetic symptoms after estrus and mating. It shows a pregnant state. Over time, sows develop a series of symptoms that resemble normal pregnancy. At the end of pregnancy, although symptoms of childbirth occur at the time of childbirt ...more...

Machines to insert rice fields should adopt different cultivation methods according to the conditions of the cornice, soil characteristics, etc. At the same time, base fertilizer should be applied according to the soil fertility. The ploughing process is as follows: 1, before the straw smash. Bef ...more...

First, the anatomy of chickens causes multiple respiratory diseases Chickens and birds are common ancestors. In order to meet the needs of flying, chickens and birds have a unique physiological structure - air bags. The airbag communicates with the outside world and is distributed around the inte ...more...

Desktop high speed refrigerated centrifuge instrument features: â—†Superior performance Microcomputer control; brushless inverter motor drive, no toner pollution, prolong service life; low noise, vibration Small; equipped with a variety of rotors, convenient for ...more...

In recent years, when the author visited some major apple producing areas, it was discovered that many fruit growers only paid attention to the management of the growing period of fruit trees and neglected the early spring management of orchards, which often caused undue losses. The early spring m ...more...

The emergence of machine-assisted seedling planters increased the speed and quality of artificial sowing, reduced the amount of seed used, and reduced the use of seed by one-third. However, in actual use, some farmers have reported that the use of seeders is not very satisfactory. There are often ...more...

Release date: 2010-03-23 Abbott Laboratories, Inc. has developed a "pocket clip" that treats mitral regurgitation by implanting the heart through the artery. Studies have shown that the safety of this device is higher than that of thoracotomy, and the effectiveness is slightly less. A ...more...