The purpose of estrus is to predict the timing of sow ovulation and to accurately determine the timing of insemination or mating based on the time of ovulation. Because the estrus behavior of sows is very obvious, direct observation method is generally adopted, that is, the degree of vaginal swelling and response to boars. When the sow estrus performance is uneasy, eat less love and love the vulva red and swollen moist, with secretions out of the flow, press the estrus sow back performance stand still, ears upright. Conjunctival hyperemia. The gilt will lie down to rest and rest within half an hour of the sow's grazing, except that the estrus's gilts will still stand uneasy, wait and see, and sometimes crawl across other pigs and hurry to scream.
If you use a boar to try to reach the boar after the sow is close to the boar is willing to accept the boar cross breeding. In intensive farms, weaning sows can be induced twice a day from 7-9 am and from 3-5 pm. Seriously identifying the estrus in sows is beneficial to the timely insemination and avoiding the occurrence of sow escaping.
The duration of estrus in sows is generally red and swollen from the outer labia to about 60-72 hours. Under normal circumstances, the sow shows signs of quiescence 30 to 36 hours after the onset of estrus, i.e. from the vulva red and swollen, starts ovulation after 38 to 40 hours of estrus, generally the egg has fertilization within 6 hours and the sperm is in the sow. Stay in the vagina for about 24 hours. Therefore, the first insemination should be appropriate 8-12 hours after the sow standing upright response, the second insemination interval of 12 hours, in general, a love period should be insemination 2-3 times.
Shandong Chunyu Water-saving Irrigation Equipment Co., Ltd., founded in 2011, is located in Laiwu High-tech Zone, Jinan City. It is a high-tech enterprise focusing on innovative and efficient emitter mold manufacturing and emitter product research and development and production. After nearly ten years of innovation and development, it is the invisible champion enterprise in Shandong Province, and now it is in a leading position in this field in China.
Spring rain people-oriented, build talent highland. At present, the company has 16 high, fine and advanced technical personnel, and cooperates with a number of scientific research institutes, forming a mold design, emitter testing, flow testing and other professional technical personnel team. In recent years, it has obtained 3 invention patents, 33 utility model patents and 3 patent awards. In 2019, it was identified as an intellectual property advantage enterprise in Jinan. It has undertaken 4 provincial science and technology innovation projects and won 2 second prizes of Shandong Science and Technology Progress Award. The company has built Jinan drip emitter mold engineering technology research center, the company has a slow wire cutting, CNC machining center, precision EDM machine, 3D projection measuring instrument, CNC engraving, laser engraving and other advanced processing equipment. Mature technology and rich experience support the excellent quality of Chunyu. Spring Rain pays attention to every link of production, implements 8S management, strictly controls the quality of products at the beginning, the middle and the end, and forms the seamless link of production management. The company has independently researched and developed flat emitter molds with full hot runner, cylindrical emitter molds with full hot runner and other products. With excellent quality, competitive price and good after-sales service, the company is well known at home and abroad, and has been sold well in Egypt, India, Iran, Turkey, Saudi Arabia, the United States and other countries.
With the vision of "building a global professional emitter mold supplier" and the mission of "providing solutions for efficient and innovative production of global water-saving irrigation enterprises", the company takes "scientific and technological innovation to scale new heights; Keep improving, the pursuit of excellence; Honesty and trustworthiness, win-win cooperation "for the values of the enterprise. For the construction of water - saving and resource-saving society to make a positive contribution.
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Shandong Spring Rain Water Saving Irrigation Equipment Co.,Ltd. , https://www.drippermould.com