The weather is very cold in winter. The temperature in the north is generally about -10°C to -20°C, and the temperature in the south can reach about -5°C to -2°C. There are many windy days and low humidity, but the temperature and humidity required for brooding are higher. Under normal circumstances

In order to increase the egg production rate, many farmers usually only focus on the management of hens, while ignoring the management of the egg production period of breeding roosters. Is this okay? In fact, this is not right. Breeding roosters also play an irreplaceable role in improving the produ