<center id="7kism"><video id="7kism"><tbody id="7kism"></tbody></video></center>

<bdo id="7kism"><legend id="7kism"></legend></bdo>

<nav id="7kism"></nav>
<bdo id="7kism"></bdo>

        91精品免费久久久久久久久,国产欧美亚洲日韩图片,午夜高清国产拍精品福利,欧美成人免费全部观看,五月婷久久麻豆国产,欧美另类人妻制服丝袜,97se色综合一区二区二区,色婷婷综合和线在线

        長毛兔養(yǎng)殖場對溫度的要求

        發(fā)布日期:2017-03-07 來源:http://m.51haodu.com 發(fā)布人:admin

        毛兔汗腺極不發(fā)達(dá),體表又有濃密的被毛,所以對環(huán)境溫度非常敏感。據(jù)試驗(yàn),子兔的更適溫度為30℃~34℃,幼兔為20℃~24℃,成年兔為15℃~19℃。建舍時要考慮環(huán)境溫度。不過兔為維持體溫,需消耗較多營養(yǎng),如不能滿足所需營養(yǎng),則對產(chǎn)毛和增重都有明顯影響。
        Maotu sweat gland is not highly developed, surface and dense coat, it is very sensitive to environmental temperature. According to the experiment, the optimum temperature of the rabbit is 30 ~34, and the young rabbit is from about 20 DEG C to about 24 DEG C, and the adult rabbit is in the range of. Environmental temperature should be considered when building. However, in order to maintain the body temperature, rabbits need to consume more nutrients. If they can not meet the needs of nutrition, they have significant effects on the yield and weight gain.
        據(jù)試驗(yàn),長毛兔采毛前后對環(huán)境溫度的要求差別較大。采毛前因被毛長密,體熱散失少;采毛后因體表毛短,散熱量可增加30%以上。所以,寒冷季節(jié)采毛后必須做好保溫工作,以防感冒,但在采毛4周后,可保持環(huán)境溫度在5℃~14℃之間,以利促進(jìn)兔毛生長,提高兔毛產(chǎn)量。

        According to the experiment, the requirements of the environment temperature of the Angora rabbit hair before and after the harvest are different. The hair coat is long ago by dense body heat loss due to surface mining; hair short hair, cooling capacity can be increased by more than 30%. So, the cold season production after Mao must do insulation work, to prevent colds, but the hair after 4 weeks, can maintain the ambient temperature at 5 DEG to 14 DEG C, in order to promote hair growth, improve the yield of rabbit hair.
        光照 光照對長毛兔的生理機(jī)能有重要調(diào)節(jié)作用。適宜的光照有助于增強(qiáng)長毛兔的新陳代謝,增進(jìn)食欲,促進(jìn)鈣、磷的代謝作用;光照不足則可導(dǎo)致長毛兔的性欲和受胎率下降。此外,光照還具有、保持兔舍干燥和預(yù)防疾病等作用。生產(chǎn)實(shí)踐表明,公母兔對光照要求是不同的。一般而言,繁殖母兔要求長時間光照,以每天光照14小時~16小時為好,表現(xiàn)為受胎率高,產(chǎn)子數(shù)多,可獲得更佳的繁殖效果。
        Light illumination has an important role in regulating the physiological function of Angora rabbits. The appropriate light helps to enhance the Angora rabbit The new supersedes the old. stomachic, promote the metabolism, calcium and phosphorus; insufficient light can lead to Angora rabbit and the pregnancy rate decreased libido. In addition, it also has the function of sterilization, keeping the rabbit house dry and preventing disease. The production practice showed that the male and female rabbits had different illumination requirements. In general, reproductive female rabbits require long time light, with light per day from 14 hours to 16 hours for the good performance for the high pregnancy rate, birth number, can obtain the best effect of reproduction.
        種公兔在長時間光照條件下,則精液品質(zhì)下降,而以每天光照10小時~12小時效果更好。目前,小型兔場一般采用自然光照,兔舍門窗的采光面積應(yīng)占地面的15%左右,但要避免太陽光的直接照射;大中型兔場,尤其是集約化兔場多采用人工光照或人工補(bǔ)充光照,光源以白熾燈光較好,每地面3瓦~4瓦,燈高一般離地面2米~2.4米。
        Under the condition of long time illumination, the quality of semen was decreased, and the effect of 10 hours to about 12 hours per day was the best. At present, small rabbit uses natural light, about rabbit house doors and windows lighting area should be accounted for 15% of the ground, but to avoid direct exposure to sunlight; large and medium-sized farm, especially the intensive use of rabbit artificial light or artificial lighting, light source with incandescent light is good, 3 watts per square meter of ground ~4 W, light high from the ground 2 meters ~2.4 meters.
        本文由長毛兔提供幫助,更多的相關(guān)內(nèi)容請點(diǎn)擊:http://m.51haodu.com我們將詳情為您解答.歡迎您的光臨!
        This article is provided by the Angora rabbit, more relevant content please click: http://m.51haodu.com we will give you the details!

        主站蜘蛛池模板: 天堂а√在线最新版在线| 国产成人综合欧美精品久久| 亚洲图片综合图区20p| 国产精品自拍实拍在线看 | 欧美亚洲日本国产综合在线| 亚洲欧美专区精品伊人久久| 亚洲男人第一无码av网| 国产成人一区二区三区| 大地资源网中文第五页| 久久天天躁夜夜躁狠狠820175| 精品免费一区二区三区在| 农村老熟女一区二区三区| 国产九九精品视频| gogogo高清免费完整版| 亚洲一区二区久久青草| 无遮挡国产高潮视频免费观看| 狠狠狠色丁香综合婷婷久久| 西西人体44rt高清大胆| 国产99久久无码精品| 亚洲精品中文字幕午夜| 伊人久久大香线蕉综合5g| 试看a级看一毛片二十分钟| 免费人成视频在线观看视频| 男男啪啪激烈高潮cc漫画免费| 亚洲精品美女久久久久9999| 亚洲第一se情网站| 亚洲精品午夜久久久伊人| 国精产品999国精产| 亚洲高清WWW色好看美女| 亚洲精品亚洲人成在线观看下载| www中文字幕在线观看| 2020久久国产综合精品swag| 欧美最猛黑人xxxxx猛交| 91亚洲国产系列精品第56页| 一本大道无码日韩精品影视丶| 国产成人AV一区二区三区在线| 国产亚洲人成网站在线观看| 国产69精品久久久久久妇女迅雷| 欧美拍拍视频免费大全| 国产日韩精品一区二区在线观看播放| 狠狠人妻久久久久久综合蜜桃 |