<blockquote id="o00vk"></blockquote>
  • <p id="o00vk"></p>
    <cite id="o00vk"><rp id="o00vk"></rp></cite>
    <sub id="o00vk"><rt id="o00vk"></rt></sub>
    国产xxxxx免费视频,少妇人妻偷人精品系列,国产在线不卡精品网站,69国产精品久久久久久人妻,人妻18毛片A级毛片免费看,538porm在线看国产亚洲,国精品91人妻无码一区二区三区,欧美性猛交XXXX乱大交

    長毛兔具有發(fā)達(dá)的消化系統(tǒng)的特點(diǎn)

    發(fā)布日期:2024-01-13 來源:http://www.tunjie.cn 發(fā)布人:創(chuàng)始人

    對粗纖維的消化率較高:長毛兔屬單胃草食動(dòng)物,消化道長而復(fù)雜,容積很大,依靠盲腸中的微生物和發(fā)達(dá)的球囊組織,能有效地利用低質(zhì)高纖維飼料。據(jù)試驗(yàn),在長毛兔日糧中供 給適量的粗纖維飼料,對長毛兔的健康是有益無害的,可刺激腸道蠕動(dòng),促進(jìn)正常的消化、吸收功能。相反,如果日糧中粗纖維含量過低,則可引起腸道蠕動(dòng)減慢,內(nèi)容物滯留時(shí)間延長,發(fā)酵變質(zhì),誘發(fā)有害細(xì)菌大量繁殖,引起腸炎、腹瀉,甚死亡。

    The digestion rate of crude fiber is relatively high: Long haired rabbits belong to monogastric herbivores, with a long and complex digestive tract and a large volume. They rely on the microorganisms in the cecum and developed balloon tissue to effectively utilize low-quality and high fiber feed. According to experiments, providing an appropriate amount of coarse fiber feed in the diet of long haired rabbits is beneficial and harmless to their health, can stimulate intestinal peristalsis, and promote normal digestion and absorption functions. On the contrary, if the crude fiber content in the diet is too low, it can cause slow intestinal peristalsis, prolonged retention time of contents, fermentation and spoilage, induce the proliferation of harmful bacteria, cause enteritis, diarrhea, and even death.

    能充分利用粗飼料中的蛋白質(zhì):據(jù)試驗(yàn),長毛兔不僅對青粗飼料中的蛋白質(zhì)有較高的消化率,而且對低質(zhì)飼料中的蛋白質(zhì)有很強(qiáng)的消化利用能力。

    20230308120507641.jpg

    Being able to fully utilize the protein in roughage: According to experiments, long haired rabbits not only have a high digestion rate for protein in green roughage, but also have strong digestion and utilization ability for protein in low-quality feed.

    能耐受口糧中的高鈣比例:長毛兔對日糧中的鈣、磷比例要求不像其他畜禽那樣嚴(yán)格。試驗(yàn)表明,長毛兔日糧中的含磷請不宜過高,只有鈣、磷比例為2:1以下時(shí),才能忍受高水平磷,過量的磷由糞尿排出體外。日糧中含磷量過髙(超過1%時(shí)),還會(huì)降低飼料的適口性,影響長毛兔的采食量。

    Can tolerate high calcium ratios in the diet: Long haired rabbits do not have as strict requirements for calcium and phosphorus ratios in the diet as other livestock and poultry. Experiments have shown that the phosphorus content in the diet of long haired rabbits should not be too high. Only when the ratio of calcium to phosphorus is below 2:1 can high levels of phosphorus be tolerated, and excessive phosphorus is excreted from the body through feces and urine. If the phosphorus content in the diet is too high (exceeding 1%), it will also reduce the palatability of the feed and affect the feed intake of long haired rabbits.

    兔毛有一定的生長期,當(dāng)兔毛生長到成熟末期,毛根底部逐漸變細(xì)而脫落,新毛開始生長,這種換毛過程稱為兔毛的脫換,年齡性換毛:年齡性換毛指幼兔而言。仔兔初生時(shí)無毛,一般在45日齡開始長出細(xì)毛,到30日齡左右乳毛全部長成。生長發(fā)育正常的幼兔,次年齡性換毛是在30100日齡,第二次年齡性換毛是在130190日齡。在6.57.5月齡以后的換毛規(guī)律與成年兔一樣。

    Rabbit hair has a certain growth period. When rabbit hair grows to the end of maturity, the bottom of the hair roots gradually becomes thinner and falls off, and new hair begins to grow. This process of hair exchange is called rabbit hair exchange. Age related hair exchange refers to young rabbits. When a young rabbit is born, it is hairless and usually begins to grow fine hair at 45 days of age. By around 30 days of age, all the milk hair has grown. For young rabbits with normal growth and development, the first age related hair change is at 30100 days old, and the second age related hair change is at 130190 days old. The hair changing pattern after 6.57.5 months of age is the same as that of adult rabbits.

    季節(jié)性換毛:季節(jié)性換毛指成年兔而言。在正常情況下,成年兔每年春秋兩季各換毛1次。春季換毛在34月份進(jìn)行,由于此時(shí)飼料豐富,代謝旺盛,所以兔毛生長較快,換毛期較短;秋季換毛在89月份進(jìn)行,由于飼料變換,毛囊代謝功能減弱,所以兔毛生長較慢,換毛期較長。病理性換毛:長毛兔患病期間或較長時(shí)間內(nèi)營養(yǎng)不足,新陳代謝紊亂,皮膚代謝失調(diào),往往會(huì)發(fā)生全身性或局部性的脫毛現(xiàn)象,即為病理性換毛。

    Seasonal shedding: Seasonal shedding refers to adult rabbits. Under normal circumstances, adult rabbits change their fur once a year in spring and autumn. Spring hair changing takes place in April. Due to the abundant feed and vigorous metabolism at this time, rabbit hair grows faster and the hair changing period is shorter; Autumn hair changing takes place in August. Due to changes in feed, the metabolic function of hair follicles is weakened, resulting in slower growth of rabbit hair and a longer hair changing period. Pathological hair loss: During or for a long period of time, long haired rabbits suffer from malnutrition, metabolic disorders, and skin metabolic disorders, often leading to systemic or local hair loss, which is known as pathological hair loss.

    主站蜘蛛池模板: 精品久久久久久成人AV| 成人自拍视频在线观看| 国产精品国产三级国产av主| 国产日韩久久免费影院| 青柠影院免费观看电视剧高清免费| 国产午夜毛片v一区二区三区| 免费VA国产高清大片在线| 精品视频福利| 自拍日韩亚洲一区在线| 亚洲一区二区三区成人网站| 一级成人欧美一区在线观看| 99久久久国产精品免费无卡顿| 免费日韩在线视频| 小辣椒福利视频精品导航| 久久久久国产精品麻豆ar影院| 精品成在人线av无码免费看| 国模小黎自慰gogo人体| 久久久久亚洲AV无码去区首| 久久综合一个色综合网| 91中文字幕一区在线| 99热久久精里都是精品6| 午夜福利视频一区| 国产明星精品无码AV换脸| 狠狠爱天天综合色欲网| 在线观看免费av毛片| 中文字幕精品久久久乱码乱码 | 久久97久久97精品免视看| 国产精品成人免费视频网站| 少妇人妻精品一区二区三区 | 国产日韩精品一区在线不卡| 日本一区二区三区福利视频| 免费看无码自慰一区二区| 国产v日产v欧美v韩国| 亚洲av永久无码精品秋霞电影影院| 国产偷国产偷亚洲高清人| 欧美亚洲国产精品久久| 国产精品嫩草影院午夜| 亚洲av激情久久精品人| 搡bbbb搡bbb搡五十| 99re热这里只有精品最新| 亚洲大片免费播放地址|