China's basic national condition is a large population with limited arable land. With the adjustment of the country’s food policy, converting arable land into pasture or for raising geese is not a feasible option for farmers. Therefore, actively promoting the grain-saving goose industry has become an important direction in the structural adjustment of animal husbandry. Below are some conservation-oriented goose farming techniques that can help maximize resource use while ensuring economic returns.
Geese and goslings are grazing poultry that require a lot of green feed and some roughage during their growth. Green feed is the main source of nutrition. Farmers can utilize hills, slopes, grasslands, farmland, ditches, and even wild pastures such as eucalyptus, bitter leeks, dandelions, and cornflowers. These weeds are rich in nutrients and rarely contaminated, making them ideal for feeding geese. Farmers usually buy goslings in spring or summer, and after one week of age, they start grazing in the late afternoon and are fed in the evening. They are typically sold in autumn and winter. Each goose consumes only 4 to 5 kg of feed and can generate over 15 yuan in profit. In the author's region, some farmers raise about 500 geese per batch using riverbank leeches, wild grasses, river mud, wheat bran, and rice to achieve good economic results.
Another method involves raising wheat geese. When geese graze in wheat fields, they feed on wheat leaves and weeds without harming the crop. This practice provides sufficient feed for geese and supports both grain and poultry production. Raising 40 to 60 geese per mu can bring in 600 to 900 yuan in profit. Key steps include:
- **Choosing suitable breeds and wheat varieties**: Opt for hardy, fast-growing breeds like the Four-season goose, Longchang goose, and Yangzhou goose. Select wheat varieties suited to local conditions.
- **Proper sowing**: Sow wheat 7–10 days earlier than usual, and increase the seeding rate by 1.5–2.0 kg per acre.
- **Fertilization**: Apply 8 kg of urea before and after December 20 and January 20 to promote early growth. After late February, stop grazing during wheat jointing, apply 10 kg of urea per acre, and ensure proper recovery of wheat seedlings.
- **Grazing management**: Purchase goslings around mid-December, keep them indoors for 20 days, then gradually introduce them to the field. Divide the field into small sections for rotational grazing. Use "headed geese" for better control. If grazing all day, provide compound feed at night with added bone meal, shell powder, and salt to support healthy development.
Another model is the orchard goose system, which uses undergrowth in fruit orchards or young forests without occupying arable land. Geese graze on weeds and do not harm tree leaves or bark. There are three types of this model:
- **Deciduous forest geese**: In fruit orchards, ryegrass can be sown annually in autumn. Geese are raised in spring and graze on ryegrass and weeds. This allows year-round goose farming.
- **Evergreen forest geese**: Focus on wild weeds, and shade-tolerant plants like white clover can be sown to supplement feed.
- **Young forest geese**: Use small trees and sunny areas with grasses like ryegrass and red clover. Two methods can be used depending on the environment.
Regardless of the type, it's important to provide supplementary feed to meet the nutritional needs of geese, especially when fruit trees are in bloom. Large forest areas can also have goose sheds built within them to reduce land use and improve management.
Lastly, straw-based goose farming uses crop residues like corn stalks, hawthorn vines, peanut vines, and other plant materials. These are processed into silage or grass powder and mixed with concentrates to feed geese.
In conclusion, choosing the right goose farming method based on local conditions can lead to sustainable and profitable results. By adapting these techniques, farmers can make the most of available resources while contributing to environmental conservation.
Magnetic Bead Nucleic Acid Extraction Reagent
The magnetic bead method nucleic acid extraction kit is a high-tech product that combines biological science and nanomaterial science. It is a major breakthrough in my country's nucleic acid extraction and purification technology. .
Magnetic bead method for nucleic acid extraction has incomparable advantages over traditional DNA extraction methods, which are mainly reflected in: 1. It can realize automatic and large-scale operation. At present, there are 96-well nucleic acid automatic extraction instruments, and the extraction time of one sample can be realized. The processing of 96 samples complies with the high-throughput operation requirements of biology, enabling rapid and timely response to infectious disease outbreaks, which makes traditional methods unmatched; â‘¡ The operation is simple and time-consuming, and the entire extraction process has only four steps , most of them can be completed within 36-40 minutes; â‘¢ Safe and non-toxic, no toxic reagents such as benzene and chloroform in traditional methods are used, and the damage to experimental operators is minimized, which fully conforms to modern environmental protection concepts; â‘£ Magnetic beads and nucleic acids The specific binding of the extracted nucleic acid results in high purity and high concentration of the extracted nucleic acid.
According to the same principle as the silica membrane spin column, the superparamagnetic silica nano-magnetic beads are prepared after the surface of the superparamagnetic nanoparticles is modified and modified by nanotechnology. The magnetic beads can specifically recognize and efficiently bind to nucleic acid molecules on a microscopic interface. Using the superparamagnetic properties of silica-coated nanomagnetic microspheres, under the action of Chaotropic salts (guanidine hydrochloride, guanidine isothiocyanate, etc.) and an external magnetic field, samples from blood, animal tissues, food, pathogenic microorganisms, etc. The isolated DNA and RNA can be used in clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, molecular biology research and other fields.
Magnetic bead nucleic acid extraction can generally be divided into four steps: lysis-binding-washing-elution.
Genetic testing will surely become a new symbol of the development of the biological industry. The emergence of high-throughput, automated nucleic acid extraction methods will reduce the labor cost of genetic testing, make large-scale testing a reality, and make it possible for genetic testing to reach ordinary people.
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