In two series experiments by-pass nitrogen, amino acid passage to the abomasum, rureen metabolic parameters and nitrogen utilization were studied respectively.

利用四頭裝有瘤胃和皺胃瘺管的閹公羊以及四頭未裝瘺管的閹公羊進行兩系列實驗插插国产，測定通過瘤胃蛋白、皺胃氨基酸通過量以及瘤胃消化代謝和氮的利用。

Intravoneous injection of 0.5mg/kgBW jingsongling cause the 60 minutesrelaxation of goat gastric motor.The effects of jingsongling on the gastric motor ofgoat is major of effects of α2 -adrenoceptor agonist,as well as that of α1 -adrenoceptor agonist,the effects of α1 -adrenoceptor agonist concentrate at thecardic and pylorus;the function of α2 -adrenoceptor exit widely at cardic,pylorus,rumen,reticulum,omasum and abomasum,the function at different part is not the same.The lowestdose of jingsonglinginhibiting the amplitude and frequency of the gastricmyoelectric is 0.01mg/kgBW;the influence of jingsonglingto the gastricmotility of goat is dose-dependent,and the amplitude regain after the frequency ofgastric myoelectriv wave.When the goat revived,the gastric motor function is notreach the level of the normal;the major reason ofjingsongling cause the goat gastricrelaxation is the amplitude renew slowly.The intravoneous injection ofjingsonglingfirst,after 5 minutes,intravoneous injection the antagonist,the effect of prazosin and idazoxan mixed is best,which can fast reversal of theinhibition of jingsongling on the gastric motor of goat,the effects of idazoxan isgood,and the prazosin block the effection of jingsongling is better than that ofxylazine,especially at cardia and pylorus.When intravoneous injection of0.5mg/kgBW idazoxan and/or prazosin only,the amplitude of gastric myoelectric ingoat increases at a certain degree,but the frequency is not changed.

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Joins the rumen buffer, the ph conditioner, adjustment rumen ph and the osmotic pressure, maintains the ideal rumen acidic environment, may enhance the milk cattle and sheep immunity, the enhancement physique and so on, reduces the afterbirth not, ketosis, mastitis and so on, prevents puerperal fever and the rumen acidosis, increases the service life and the reproduction rate.

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Vitamin, trace element, rumen amino acid, rumen protein, micro ecology preparation, nutrition regulation, rumen buffer, butterfat synthesis medicinal preparation, butterfat modifier, chelating agent, seasoner, ph conditioner, oxidation inhibitor, carrier and so on.

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From this study, we can conclude that:1,there is no significantly difference in pH, [NH3-N], Acetate concentration, propionate concentration, intake, nutrient degradation, blood calcium, TCH and TG.;40g/d stearin in sheep can prominently increase the butyric acid concentration and

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P 0.05. Total ruminal bacteria, proteolytic and amylolytic bacteria, and protozoa in rumen enumerated by culture method all increased (P 0.05) in the Trial period. Real-time PCR analysis was used to compare Pre-trial and Trial populations of cellulolytic species, including Butyrivibrio fibrisolvens, Ruminococcus flavefaciens and Ruminococcus albus, which were increased by 7.0, 4.5 and 9.6%(P 0.05), respectively. Two starch-fermenting bacteria species, Streptococcus bovis and Ruminobacter amylophilus, were increased by 25.4% and 14.6%(P 0.05), respectively.

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Three in vitro gas production experiments were conducted using the procedure described by Menke et al.(1979) to investigate the effect of steam conditioning time, processing method and corn variety on the gelatinization of starch and ruminal fermentation characteristics of corn grains.

本文應(yīng)用人工瘤胃法国产.www，進行以下三個試驗研究：1 不同調(diào)制時間預(yù)處理的蒸汽壓片高油玉米對淀粉糊化度和人工瘤胃發(fā)酵的影響；2 比較最佳調(diào)制時間處理的蒸汽壓片91自拍视频国产、微化麻豆精美视频、膨化及爆破不同方法處理的高油玉米對淀粉糊化度和人工瘤胃發(fā)酵的影響；3 不同品種玉米對淀粉糊化度和人工瘤胃發(fā)酵的影響另类视频区第1页。

By developing the optional measurement condition for ruminal fermentation products and comparing the effects of different levels of tannic acid on fermentation and methane production, the proper adding levels of tannic acid in vitro was established. We also examined the characteristics of rumen fluid fermentation and methane production of tannic acid unsupplemented or supplemented with different forage : concentrate ratios by using gas production method.

通過對瘤胃體外發(fā)酵系統(tǒng)中單寧酸的生物降解以及對瘤胃內(nèi)環(huán)境影響的研究黄色录像黄色网站黄色视频，初步確立了單寧酸改善瘤胃發(fā)酵的適宜添加量及其效果；并探討了在不同精粗比底物條件下單寧酸對瘤胃體外發(fā)酵和甲烷產(chǎn)量的作用免费下载一级大黄片视频。

Experiment(2): Six one years old gansu high mountain fine wethers(avg wt 25~30 kg) fitted with permanent ruminal and proximal duodenal cannulae were assigned to double 3×3 Latin square design, to measure the apparent digestibilities of nutrients in rumen, postrumen and total tract and the apparent nitrogen retention as well as the dynamic changes of the rumen metabolic parameters in wethers fed with diets which SC:NSC ratio were respectively 1.57, 1.95 and 2.29.

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According to result of group I, II, HI, relationship of dry matter intake digestible energy intake , crude protein intake , ruminal degradable protein or ruminal undegradable protein with average daily gain of stall-feeding growing Boer goats were analyzed.

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