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不同比例血浆蛋白粉对断奶仔猪生产性能的影响 总被引:2,自引:0,他引:2
血浆蛋白粉是动物血液(包括猪血或牛血)分离出红血球后的血浆经干燥后而制成的粉状产品。该产品的粗蛋白质含量高达78%左右,赖氨酸含量约7%,其它各种氨基酸含量较丰富且均衡,蛋白质和氨基酸消化率在90%以上,是一种品质极好的动物性蛋白质饲料。该产品中所含... 相似文献
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不同比例血浆蛋白偻对断奶仔猪生产性能的影响 总被引:2,自引:0,他引:2
血浆蛋白粉是动物血液(包括猪血或牛血)分离出红血球后的血浆经干燥后而制成的粉状产品.该产品的粗蛋白质含量高达78%左右,赖氨酸含量约7%,其它各种氨基酸含量较丰富且均衡,蛋白质和氨基酸消化率在90%以上,是一种品质极好的动物性蛋白饲料.该产品中所含有的免疫球蛋白,能有效提高仔猪的被动免疫能力和健康水平. 相似文献
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本研究采用在生产条件下的对比饲养试验,通过研究日粮中添加本实验室研发的过瘤胃保护蛋氨酸产品对高产荷斯坦牛乳和血浆氨基酸含量与组成、血液生化指标的影响,验证产品的性能,探讨过瘤胃保护蛋氨酸对奶牛生产性能和乳成分产生影响的机理。试验选择2~5胎之间、日产奶量30kg以上、处于泌乳高峰期的荷斯坦牛20头,随机分为两组,试验组每头每天添加本实验室研发的过瘤胃保护蛋氨酸产品75g。试验结果表明,日粮中添加该产品可明显增加荷斯坦牛乳大多数种类氨基酸和总氨基酸含量,使11种血浆游离氨基酸含量有不同程度的增加,总游离氨基酸含量有一定程度的提高,血浆白蛋白、球蛋白、总蛋白含量明显增加,6种血浆游离氨基酸含量有不同程度的降低,谷草转氨酶和谷丙转氨酶活性增强,游离脂肪酸含量和葡萄糖含量明显上升,尿素氮含量明显降低。上述结果进一步验证了本实验室研发的过瘤胃保护蛋氨酸产品具备较好的瘤胃稳定性和小肠可消化性,在一定程度上揭示了其提高产奶量和乳蛋白含量的作用机理。 相似文献
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灌注寡肽与游离氨基酸对来航公鸡氨基酸吸收及循环中肽的影响 总被引:20,自引:0,他引:20
试验比较研究了在麻醉条件下来航公鸡十二指肠灌注酪蛋白水解物寡肽(COP)与游离氨基酸(FAA)对门静脉血液中氨基酸和肽的影响。结果表明:灌注后10分钟,COP组门静脉总氨基酸(TAA)含量显著地(P<0.05)高于相同组成的等摩尔浓度的FAA1组和等百分浓度的FAA2组。FAA2与FAA1组相比,一些氨基酸含量有升高的趋势,但仅个别氨基酸显著(P<0.05)高于FAA1组。COP组门静脉血浆游离氨基酸含量,除赖氨酸、色氨酸、酪氨酸、脯氨酸、组氨酸外,其它氨基酸都显著(P<0.05)或极显著(P<0.01)高于FAA1和FAA2组。在饥饿状态及灌注COP和FAA1、FAA2后,门静脉血浆中肽结合氨基酸(PBAA)分别占39.23%,35.63%,45.89%和52.63%。其中谷氨酸、丝氨酸、丙氨酸、甘氨酸比例较高,它们与其它一些氨基酸存在显著(P<0.05)或极显著(P<0.01)正相关。GPLC分析结果显示:灌注COP和FAA后门静脉血浆的肽量均极显著地(P<0.01)高于饥饿对照状况,COP组鸡门脉血浆中总量和一些肽量显著高于FAA组(P<0.01)。试验证实,鸡村寡肽的氨基酸吸收快于游离氨基酸,一部分可以完整的形式吸收进入血液循环。给予肠道FAA也会改变循环中的肽量。 相似文献
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1进口血浆蛋白粉11血浆蛋白粉作用血浆蛋白粉是猪血或牛血分离出红血球经喷雾干燥而制成的粉状产品。血浆蛋白粉中粗蛋白含量70%~78%,赖氨酸含量6%~76%,其消化利用率较高,粗蛋白和赖氨酸的消化率分别为76%~80%和86%~90%(见表1),... 相似文献
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苜蓿中叶蛋白提取方法的研究 总被引:15,自引:3,他引:12
为了有效地从富含蛋白的牧草中提取叶蛋白,对苜蓿采用6种不同的方法进行提取试验,从中选出了最佳提取方法,并对蛋白,纤维,糖浆产品中有关元素,各种氨基酸等进行了详细分析研究,结果表明,蛋白产品中其蛋白质含量在50%以上,纤维产品中蛋白质含量在20%以上,值得注意的是蛋白产品中有关元素含量很高,各种氨基酸含量不但高,而且比例协调,因此,从富含蛋白的牧草中提取叶蛋白是解决我国蛋白质营养匮乏的重要途径。 相似文献
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《河南畜牧兽医(综合版)》2001,(8)
用合成氨基酸饲料喂畜禽可减轻粪便臭味猪粪便中产生异味的物质主要是氨,这些氨是猪在消化过程中微生物分解蛋白质等含氮物产生的,而含氮物含量的多少则取决于猪饲料的成分。猪食用玉米燕麦后,体内会积累大量过剩的氨基酸,这些过剩的氨基酸就成为臭气的来源。专家们试验证实,如果用合成氨基酸喂猪,体内过剩氨基酸的含量会大大下降。如果在猪饲料中,将天然饲料含量减少14%~18%,同时增加合成氨基酸饲料,那么猪粪便中的氨含量就会减少30%~50%,而且不影响猪的生长。(赵智杰杨再)母猪配种后的 饲喂水平英国专家的一项研究表明,… 相似文献
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花粉中的蛋白质和氮基酸 总被引:1,自引:0,他引:1
花粉中的蛋白质和氨基酸是它的重要营养成分,含量非常丰富,花粉的蛋白质含量7-40%,氨基酸含量为25%左右,见有18种氨基酸,其中有人体必需的8种氨基酸。文中尚举例笔者等测出的35种我国常见花粉的氨基酸含量。 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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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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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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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