After the sows are mated, they are bound from the egg to the birth of the baby. This process is called pregnancy. The sow's gestation period is generally 112 to 116 days with an average of 114 days. In feeding and management, generally divided into early pregnancy (20 days ago), mid-pregnancy ......
Many years of practice have proved that selecting the best seasonal brooder under natural conditions not only affects the survival rate of the chick, but also has an important impact on the future production performance and economic benefits. When is the farmhouse brooding chicken good? Generally ......
There are mainly two kinds of objective fault diagnosis methods and subjective fault diagnosis methods. The objective fault diagnosis method is a method for diagnosing faults through dedicated measuring tools, instruments, and equipment, and is relatively complicated to use, and is mainly used for ......
1, the choice of rams. The ram should be physically strong, energetic, agile and lively, and have a strong appetite. The head is slightly heavy, eyes are large and prominent, neck is wide and long, muscular, the armor is higher than the referral, the back is straight, the ribs are arched, the back ......
Rooting agents are one type of plant growth regulators whose role is to promote the rooting of plants and play a significant role in the cutting propagation of plants. The main rooting agents are indole butyric acid, indole acetic acid and naphthaleneacetic acid. Different plants have different s ......
Corn smut, farmers call it "gray bag." It can occur in every growth period of corn, damage tassels, male and female, and stems and leaves. Symptoms The symptoms before and after corn tassel identification become apparent. The affected area grew tumors of different sizes. The tumor was wh ......
Menstruation is a normal physiological phenomenon unique to women. What is good for menstrual women? What can women eat during menstruation? Women's folk "blood" method during menstrual period Menstruation is a normal physiological phenomenon unique to women and a sign of sexual ma ......
At present, the development of peanuts in Chongqing will enter the stage of the next pinch, and the growth of peanuts will shift from vegetative growth to reproductive growth. All localities must strengthen the management of peanuts in the field of pinning, control peanut longevity, prevent premat ......
I. Testing basis for composite film bags for pharmaceutical packaging Since 2002, the State Food and Drug Administration has issued 49 standards for pharmaceutical packaging materials and 25 standards for testing methods for pharmaceutical packaging materials. Among t ......
The first trick: look at the flowers in the fog - morphological observation method (1) HE staining and light microscopy: The apoptotic cells were round, the nucleus was deeply stained, the cytoplasm was concentrated, the chromatin became a mass, and the cell surface had a "bud" phenomeno ......