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.
Fluorine-Containing Benzaldehyde
Most products of Fluorine-Containing Benzaldehyde are a pale yellow liquid. They are playing an important role in fine chemical intermediates, is used as the main raw material for the synthesis of a variety of pesticides, pharmaceuticals, surfactants, polymer monomer mildew. As used in medicine synthesis antihypertensive drugs, antipyretic analgesic anti-inflammatory drugs, anti-cancer drugs, muscle relaxation drugs for synthesizing fluorine cypermethrin, fluorine chlorobenzene daisy cool in pesticides, fluoride and styrene, wherein the polymer of styrene monomer to fluorine can be widely used in the manufacture of the recording material, a thermoplastic resin coating, liquid crystal materials. Currently new miticide is effective pesticide products which is the main raw material of Fluorine-Containing Benzaldehyde.
Containing Benzaldehyde,5-Dichlorobenzaldehyde,3-Bromo-5-Fluorobenzaldehyde
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