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<正>豆粕是饲料工业中应用最为广泛的植物性蛋白原料,但其中存在的多种抗营养因子,降低了动物对豆粕营养物质的吸收和利用。用微生物发酵法处理豆粕可以有效地去除豆粕中抗营养因子,并降解大分子蛋白质生成小肽,同时还可生成多种益生菌、积累有益的微生物代谢产物,最终得到具有多种功能的优质蛋白饲料——发酵豆粕。发酵豆粕在断奶仔猪日粮中的应用已有一些报道〔1~3〕,但其在育肥猪日粮中的应用报道较少。本试验采用 相似文献
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发酵豆粕"肽多乐"对断奶仔猪生产性能的影响 总被引:2,自引:0,他引:2
发酵豆粕是利用现代生物工程发酵技术,以优质豆粕为主要原料,将大豆蛋白降解为小分子蛋白和小肽,并将抗营养因子彻底分解的无抗原优质蛋白,同时在发酵过程中,产生大量益生菌、乳酸、UGF(未知生长因子)等物质,因此发酵豆粕被认为是幼龄动物饲料的理想植物蛋白。本试验目的是考察发酵豆粕“肽多乐”在断奶仔猪日粮中的应用效果,验证“肽多乐”对断奶仔猪采食、防拉稀、促生长、减少断奶应激等的改善作用。1材料与方法1.1试验材料肽多乐由上海邦成生物科技有限公司提供。1.2试验地点和时间试验在上海崇明县富民农场进行,试验从2006年5月23日… 相似文献
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《饲料工业》2017,(20):34-38
试验研究高活性大豆异黄酮发酵豆粕对断奶仔猪生长发育、抗氧化功能和肝功能的影响。选择280头(21±2)日龄断奶仔猪(杜洛克×长白×大白),按体重一致性随机分为4组,每组7个重复,每重复10头。对照组仔猪饲喂基础日粮,试验组分别以4%、8%和12%高活性大豆异黄酮发酵豆粕等蛋白替代去皮豆粕,试验期40 d。结果表明,含8%高活性大豆异黄酮发酵豆粕替代普通豆粕能够提高断奶仔猪平均日采食量和平均日增重(P0.05),显著提升仔猪血清抑制羟自由基的能力(P0.05),以4%或8%发酵豆粕替代普通豆粕后,仔猪血清丙二醛有降低趋势,可显著降低血清谷草转氨酶和谷丙转氨酶的活性(P0.05),有提高血清总蛋白的趋势。研究结果提示,在断奶仔猪尤其是断奶两周内仔猪日粮中以高活性大豆异黄酮发酵豆粕替代普通豆粕有较好的饲喂效果,替代量为8%时效果最佳。 相似文献
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不同大豆蛋白饲料对仔猪断奶早期的营养效应研究 总被引:1,自引:0,他引:1
将20头3周龄断奶的DLY仔猪随机分成4组,断奶后第1周分别饲喂以膨化全脂大豆、膨化豆粕、膨化去皮豆粕和大豆浓缩蛋白为主要蛋白源的全价日粮,第2周开始,所有仔猪均饲喂同一日粮10d,以考察不同大豆蛋白饲料的营养效应。结果表明:4种大豆蛋白饲料对仔猪断奶后第1周生产性能无明显影响,但膨化豆粕能显著改善试验后期及全期仔猪生产性能。第1周膨化豆粕日粮蛋白质利用率显著高于膨化全脂大豆日粮和膨化去皮豆粕日粮(P<0.05)。膨化豆粕较其他大豆蛋白饲料更有利于仔猪断奶早期的氮代谢和提高机体的的免疫机能。综合本试验结果表明,膨化豆粕是3周龄断奶仔猪断奶早期饲粮的适宜大豆蛋白源。 相似文献
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正断奶仔猪对其日粮质量要求很高,需要大量的优质蛋白质,目前鱼粉的价格日益上涨,使得仔猪饲料价格一直居高不下,因此需求一种优质的适用断奶仔猪的蛋白质,来替代动物蛋白成为动物营养研究与饲料开发的热点。发酵豆粕的作用:主要以优质植物蛋白为基质通过发酵酶解处理而得,氨基酸平衡,富含乳酸和B族维生素以及未知生长因子和皮毛增亮因子,可提高抗病保健能力。发酵豆粕具有独特的发酵芳香味,能改善饲料的风味,增加动物食欲;植物蛋白发酵后所产生的酸味物质能促进幼龄动物胃肠道消化功能,同时改善肠道 相似文献
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早期断奶仔猪腹泻给养猪业带来了巨大的经济损失,通过蛋白质营养调控技术在仔猪日粮中采用氨基酸平衡较低蛋白质水平,选用抗原过敏度低的蛋白质原料.研究结果表明,日粮中添加赖氨酸、可消化蛋氨酸 胱氨酸、苏氨酸、色氨酸和谷氨酰胺,使日粮中可消化必需氨基酸含量接近理想蛋白质模式,日粮蛋白质水平比NRC(1988)推荐水平可降低2~4百分点,断奶仔猪腹泻程度明显降低,选用动物性蛋白质原料和膨化豆粕或膨化大豆粉可显著降低腹泻率. 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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以国际标准强毒R株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离MG,并收集感染鸡所产蛋分离MG。结果表明,人工感染48小时后上、下呼吸道及肺已被全面感染,96小时气囊已被感染,120小时输卵管已能分离到MG,卵巢始终分离不到MG。人工感染鸡自144小时便能在其所产蛋中分离出MG。药物治疗能在72小时内消除感染,油乳剂苗则需24天后逐渐降低蛋内MG分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内MG,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献