Management points of different breeding periods for meat ducks

The first egg-laying period of the cherry grazing duck can be divided into four stages: 20-25 weeks of age is the initial period of egg production; 25-30 weeks of age is the pre-lay period; 30-48 weeks of age are the peak period of egg production; 48 The -66 week old period is the late stage o

Proanthocyanidin (OPC)

Proanthocyanidins (OPC) - A legendary story of five hundred years of proanthocyanidins (OPC) - a legend that has been circulated for five hundred years
In the winter of 1534-1535, a team of French sailed on the St. Lawrence River in Quebec, Canada. During the cold

Special aquaculture greenhouse design

Special types of aquatic products such as crabs, turtles, cockroaches, etc., generally take 3 to 5 years to grow at natural temperatures, and the use of greenhouse constant-temperature culture can be marketed in just 10 months to a year and a half, significantly shortening the feeding period.