Variety Profile: Gully, scientific name of the channel catfish, also known as the United States? Fish. Native to the Mississippi River in the United States, it is a large freshwater carp, with a maximum of 70 pounds or more. The introduction of our country in the mid-1980s has been successful........

The American bigmouth bass is also known as giantmouth bass and calf. The Mississippi River basin, which originates in North America, is a large-scale economic fish that has the characteristics of delicious meat, large individuals, fast growth, and strong fertility. Our country was introduced .......

First, the choice of broodstock selection spring and summer of the year has spawned breeding, individuals in more than 400 grams of robust broodstock.
Second, the broodstock cultivation In order to make the spring and summer eggs have been produced in Pengze squid breeding again in the fa.......

The seasonal price difference of Huangqi is relatively large. In the summer, the price of the same specification Huangpi is usually only half of the selling price in winter and spring. Summer and autumn harvesting of Astragalus membranaceus will be used as a fattening fertilizer, and it will b.......

This year, continuing high-temperature and dry weather is unfavorable to the growth of vegetables, but it is beneficial to the occurrence of many kinds of pests that are suitable for high temperature and drought. The population of worm populations is more, and the next stage will enter the per.......

Rice field shrimp and crab polyculture industry is an emerging system-rich project with higher comprehensive economic benefits in current agricultural production.
Yixing City currently has 2,400 acres of shrimp and crabs in paddy fields. In 1998, the 30-acre technical pilot project was ca.......

In some rural areas in China, grazing cattle are still an indispensable driving force for agricultural production. Scientific feeding and management, rational service, and especially strengthening the management of farm cattle during the busy farming period are of great significance for protec.......

Autumn and winter season is the early stage of gonad development in the broodstock. The quality of the gonads in this period not only affects the amount of brooding eggs, but also determines the success or failure of broodstock breeding in the spring of the following year. Therefore, in the fa.......

Vitamins are a class of low-molecular organic compounds that have very little in the body, but they have important physiological functions. When they are absent, they cause slow growth, stagnation, decreased fertility, and reduced resistance to disease and even death. Meat rabbit large intesti.......

Where the flock is often active, dry, ventilated, sunny places should be selected. The sheep pen is moist and hot, and the pasture is low-lying and damp. The parasites are easy to breed, leading to the onset of herds. Sheep like to eat clean feed, drink cool and sanitary water. Forage or drink.......

First discovered in Jiangsu Province, China. It is characterized by rapid onset, insignificant symptoms, rapid death, rapid transmission, high morbidity and mortality. [pathogen] rabbit haemorrhagic fever virus, spherical shape, icosahedral symmetry structure; can agglutinate human type A; exi.......

The non-polluted aquaculture technology of crabs is a new type of technology popularized during crab breeding, crab cultivation, crab cultivation of one-year-old crabs, and feeding of adult crabs.

1. Select ponds, rice fields, and large and medium water areas that are close to water s.......