色情午夜 码一区二区,江苏少妇性BBB搡BBB爽爽爽,亚洲视频中文字幕,麻豆一级A片久久久乱码

news

Pig breeding equipment -- cold proof and temperature increasing technology in Piggery

In the actual winter pig feeding and management, to pay attention to the cold insulation measures in the pigsty, improve indoor temperature, reduce the consumption of pig body metabolism, in cold winter, not only does not affect the growth and fattening, but also promote the growth and fattening.
First, increase the feeding density of a pig is a "source", the higher the density, the higher the temperature. The sows per head, accounted for 4~4.5 square meters, a captive a nest; not pregnant sows per head accounted for 1.6 square meters, 4 square meters in 2~3 head; 6~8 months gilts per head accounted for 0.8 square meters, 4 square meters of captive 7~8 head. The above bars include eating, drinking and resting places. In the resting area (sleeping area), the method of lying full circle should be adopted, that is, the pigs can be filled in the sleeping area without leaving any gaps, and the sleeping area should be kept clean and dry.
Two, reduce the humidity of pig house, the humidity of pig house is bigger, the heat that pig body loses is greater, the pig feels cold more. In order to avoid moisture, fold to frequently change hay and dry soil, to make the pig manure fixed row, generally 4~5 times per day and night time row fecaluria, pig lying place can ensure no waste, keep dry. Due to the increase in the number of pigs in the winter urine, the humidity inside the house becomes larger. So, in addition to training pigs "three point positioning" (food, feces, urine bed fixed position), fed feed can not be too thin.
Three, to prevent drafts into pigs by thieves attack pens gap. When the pig is asleep, it can cause cold, pneumonia and other diseases. Therefore, to block the leak and break the good housing gap, house windows or vents be apart from the ground 1.5 meters above.
Four, the application of simple fold plastic greenhouses covered with plastic film can effectively improve Pingpen temperature above 7 DEG C, reduce cold stress, reduce energy consumption.
Five, for increasing the density of the grass in the grass at the same time the application of thick cushion ring, it is a effective way to winter moisture proof, bedding straw (wheat straw, rice straw and sawdust) sources, straw and pig manure fermentation of organic fertilizer used together. Methods using the pad grass ring is in the grass plate pig lying area 20~30 cm, grass board best brick cement bricks; the vertical brick on the floor under 5 cm, 19 cm on the ground with cement brick brick grass blocking plate 20~22 cm high, the pad join the grass lying area, prevent the straw scattered and pig shit in the area lying.
Winter cold, when the outside temperature is too low, the pig body in order to maintain normal body temperature, it is necessary to enhance the oxidation of substances in the body decomposition, heat generation, to supplement the body heat dissipation. Generally speaking, when the temperature of piglets is between 20 and 26 degrees Celsius, the consumption of metabolism is low and the growth and development are normal. However, the consumption of large pigs was lower at 15 and 20 degrees Celsius, and their normal growth was normal.

  • Contact us
  • Web:http://m.hph3photography.com/en/
  • http://qdph.en.alibaba.com
  • Tel/Whatsapp/Wechat:+8618266221406 +15621127700
  • Email:elsa@sdpuhui.cn nanaliu@sdpuhui.cn
  • Focus on us
  • Sales service hotline
  • 18660928200
  • Address:The streets of Bei'an Li Ling Industrial Park in Qingdao city of Jimo
  • Address:China Shandong Linyi Town Secondary Village Development Zone

Copyright 2017 Qingdao Puhui Agriculture and Animal Husbandry Science and Technology Co., Ltd. All Rights Reserved

色情网站在线播放免费 | 人与性口牲恔免费视频 | 成人A片99产无码蜜柚在线 | 欧美性猛交AAAA片黑人 | 啊轻点灬太粗嗯太深A片 | 四川寡妇高潮AAA片毛片 | 最新国产成人电影免费 | 黄色的不良视频在线观看 | 3D动漫精品啪啪一区二区免费 | 黄a无码片内射无码视频 | 成人H动漫精品一区二区三区蘑菇 | 佐仓由美子AV一区五十路 | 日本中文字幕在线视频 | 麻豆性色无码精品一区二区 | 国产毛片中字幕视频看看 | 国产AV一区二区三区 | 丰满人妻在公交车上的激情 | 国产剧情亚洲无码视频 | 69久蜜桃人妻无码精品一区 | 国产91黄色在线播放 | 成年人免费视频又大又粗 | 18禁污黄网站在线播放 | 朋友人妻少妇精品系列 | 日本人妻一区二区三区 | 中文字幕一区二区在线观看 | 日韩av无码高清一区免费 | 在线免费观看一级毛片 | 一级A片处破外女视频 | 一级做受大片免费视频 | 亚洲熟女av一区二区三区 | 成人红桃a视频一区 | 十八禁网站直接进入 | 91丨竹菊丨国产熟女 | 中文字幕av久久爽 | 91人人妻人人澡人人爽国产网址 | 国产高清无码视频在线观看 | 久久久久久成人精品视频网站 | 在线观看污视频网站 | 99 国产丝袜在线播放竹菊 | 亚洲wwW成人网战 | 色婷婷一区二区三区久久午夜成人 |