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随着国民经济的迅速发展,人民生活水平的不断提高,人民群众对牛奶、牛肉的需要量日益增长,促进了养牛事业的发展。各地相继建立了种公牛站、冷冻精液站,冷冻精液人工授精日益普遍。近几年的实践证明,后裔鉴定的优良种公牛数量很少,并且部分种公牛因病而失去交配能力。近十年来,我国从国外引进了一批优良种公牛,其中也有很大一部分性欲极差,不易采精,有些种公牛因体胖,交配困难。这样既造成经济上的极大损失,又影响到优良品种的发展。根据这一情况,无锡医疗电子仪器厂在
With the rapid development of the national economy and the continuous improvement of people’s living standards, the people’s demand for milk and beef is growing day by day, which has promoted the development of raising cattle. Bulls have been established around the plant, frozen semen, frozen semen artificial insemination is increasingly common. In recent years, it has been proven that there are only a few excellent breed bulls identified for descendants, and some bulls lose their ability to mate due to illness. In the past ten years, a batch of excellent bulls have been introduced from abroad. Among them, a large part of them have extremely poor sexual desire and are not easy to extract refined ones. Some bulls have difficulties in mating due to body fat. This will not only cause great economic losses, but also affect the development of fine varieties. According to this situation, Wuxi Medical Electronic Instrument Factory in