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1.
试验比较了3种补铁剂(硫酸亚铁、富马酸亚铁和蛋氨酸螯合铁)对哺乳仔猪生长性能和血液生化指标的影响。试验共选取7±2日龄"杜×长×大"仔猪120头,随机分为4个处理组,每个处理3个重复,每个重复10头猪。第Ⅰ试验组为空白对照组,第Ⅱ试验组添加硫酸亚铁100 mg/kg(以铁元素计,下同),第Ⅲ试验组添加富马酸亚铁100 mg/kg,第Ⅳ试验组添加蛋氨酸螯合铁100 mg/kg。试验期21 d。测定各阶段(每周)生长性能;于7和21日龄,采血测定血红蛋白浓度、血细胞数、血细胞压积、免疫蛋白;28日龄测腹泻率及存活率。结果显示:(1)在15~21日龄、22~28日龄和7~28日龄,富马酸亚铁组和蛋氨酸螯合铁组仔猪日增重、采食量与对照组相比差异极显著(P0.01),富马酸亚铁组和蛋氨酸螯合铁组仔猪日增重、采食量与硫酸亚铁组相比均显著提高(P0.05),硫酸亚铁组与对照组相比显著提高(P0.05),但富马酸亚铁组和蛋氨酸螯合铁差异不显著(P0.05)。(2)与对照组和硫酸亚铁组相比,富马酸亚铁组和蛋氨酸螯合铁组的血红蛋白含量、血红细胞数、血红细胞压积、免疫蛋白均显著提高(P0.05),但富马酸亚铁组与蛋氨酸螯合铁组的仔猪血红蛋白含量、血红细胞数、血红细胞压积、免疫蛋白均差异不显著(P0.05)。(3)与对照组和硫酸亚铁相比,富马酸亚铁组和蛋氨酸螯合铁组腹泻率显著下降(P0.05),成活率极显著提高(P0.01),但富马酸亚铁组与蛋氨酸螯合铁组腹泻率和存活率方面差异不显著(P0.05)。以上研究表明,日粮中添加100 mg/kg硫酸亚铁组、富马酸亚铁和蛋氨酸螯合铁仔猪日增重、采食量与对照组相比显著提高,富马酸亚铁和蛋氨酸螯合铁也更好的改善仔猪血液铁营养状况,富马酸亚铁和蛋氨酸螯合铁的使用效果大体一致。 相似文献
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《现代畜牧兽医》2021,(7)
试验研究不同类型的铁源对断奶仔猪生长性能、皮毛指数及血液指标的影响。将96头28日龄、"杜×长×大"三元杂交仔猪随机分为4个处理组。对照组仔猪饲喂基础日粮,试验组分别在日粮中添加200 mg/kg的硫酸亚铁、甘氨酸铁、蛋氨酸铁。试验期为28 d。结果表明,甘氨酸铁和蛋氨酸铁组的仔猪平均日采食量显著高于对照组(P0.05),甘氨酸铁组仔猪料重比显著低于对照组(P0.05);与对照组相比,硫酸亚铁、甘氨酸铁、蛋氨酸铁组仔猪皮毛指数显著改善(P0.05);硫酸亚铁、甘氨酸铁、蛋氨酸铁组仔猪血清免疫球蛋白A含量显著高于对照组(P0.05),硫酸亚铁、甘氨酸铁组仔猪血清免疫球蛋白G含量显著高于对照组(P0.05);甘氨酸铁、蛋氨酸铁组仔猪血清超氧化物歧化酶活性显著高于对照组(P0.05),硫酸亚铁、甘氨酸铁组仔猪血清丙二醛含量显著低于对照组(P0.05),甘氨酸铁组仔猪血清总抗氧化能力显著高于对照组(P0.05);与对照组相比,硫酸亚铁、甘氨酸铁、蛋氨酸铁组仔猪红细胞数量、血红蛋白浓度显著提高(P0.05)。研究表明,仔猪日粮添加不同铁源可以提高仔猪的生长性能、免疫力、抗氧化功能,改善皮毛指数,预防缺铁性贫血;甘氨酸铁的效果优于硫酸亚铁、蛋氨酸铁。 相似文献
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[目的] 比较母猪和仔猪不同形式的补铁补硒对仔猪生产性能、血液生化指标、免疫性能的影响。[方法] 将32头母猪随机分为8组,每组4头,1~4组基础日粮中添加硫酸亚铁和亚硒酸钠,5~8组基础日粮中添加甘氨酸螯合铁和硒代蛋氨酸。2组和6组母猪所产仔猪于3日龄肌注铁硒合剂;3组和7组仔猪基础日粮中添加硫酸亚铁和亚硒酸钠;4组和8组仔猪基础日粮中添加甘氨酸螯合铁和硒代蛋氨酸;1组和5组仔猪饲喂基础日粮,不接受任何形式的补铁补硒。母猪预产期前30 d开始饲喂试验日粮,仔猪7日龄时开始饲喂试验日粮,试验至仔猪21日龄断奶结束。测定并比较不同组别仔猪生长性能指标、血液生化指标以及免疫性能指标,以及不同组别母猪初乳和常乳中的铁硒含量。[结果] 在仔猪补铁补硒形式相同的条件下,母猪基础日粮中添加甘氨酸螯合铁和硒代蛋氨酸(5~8组)与基础日粮中补充硫酸亚铁和亚硒酸钠(1~4组)相比,能够显著(P<0.05)或极显著(P<0.01)提高仔猪的初生重、断奶重、断奶存活率、断奶合格率,2日龄和21日龄血浆铁含量、血浆硒含量、血红蛋白含量、血浆转铁蛋白含量、IgA含量、IgG含量、IgM含量,以及母猪初乳和常乳中的铁硒含量;在2种形式的母猪补铁补硒条件下,与不补铁补硒相比,仔猪不同补铁补硒形式(2~4组和6~8组)对其断奶重、断奶存活率、断奶合格率,以及21日龄血浆铁含量、血浆硒含量、血红蛋白含量、血浆转铁蛋白含量、谷胱甘肽过氧化物酶活性、IgA含量、IgG含量、IgM含量均有极显著(P<0.01)的提高作用,并且仔猪基础日粮中添加甘氨酸螯合铁和硒代蛋氨酸的效果优于肌注铁硒合剂和基础日粮中补充硫酸亚铁和亚硒酸钠。[结论] 母猪和仔猪基础日粮中添加甘氨酸螯合铁和硒代蛋氨酸,能有效提升仔猪的生长性能、血液生化指标和免疫性能。 相似文献
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《中国饲料》2016,(13)
为研究饲料中添加补铁微生态制剂对母猪繁殖性能、仔猪生长性能及预防仔猪贫血的影响,本试验选择胎次相同、妊娠后期(84 d左右)莱芜黑猪96头,随机分为4组,每组3个重复,每个重复8头母猪。对照组饲喂基础饲料;试验1组饲喂基础日粮,同时在仔猪出生3日龄时注射牲血素;试验2组基础饲料+0.2%补铁微生态制剂;试验3组饲喂基础饲料+0.2%补铁微生态制剂,同时在仔猪出生3日龄时注射牲血素。结果表明:(1)与对照组相比,试验2组,仔猪活仔率和仔猪育成率分别提高5.58%和6.13%;断奶重和平均日增重分别提高21.23%和23.13%(P0.05);腹泻率较对照组降低35.56%(P0.05)。(2)与对照组相比,试验2组母猪初乳中的铁、铁蛋白、转铁蛋白分别提高了49.25%、87.90%、50.97%(P0.05)。(3)与对照组相比,试验2组母猪和仔猪血液中的红细胞数、血红蛋白浓度分别提高21.12%、47.02%和9.40%、32.64%,均差异显著(P0.05)。(4)与对照组相比,试验2组仔猪血清中的铁含量提高23.16%,总铁结合力降低16.04%,均差异显著(P0.05)。综合考虑,0.2%的补铁微生态制剂组在提高母猪繁殖性能、仔猪生产性能,降低仔猪腹泻率,提高母猪和仔猪体内铁贮方面效果优于其他三个组。 相似文献
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氨基酸铁络合物对新生和哺乳仔猪铁营养状况的影响 总被引:9,自引:0,他引:9
用24头已与杜洛克父本配种的妊娠70天的(长×大)杂交母猪及其所生的24窝仔猪进行试验,研究不同铁源与注射铁剂补铁对新生和哺乳仔猪铁营养状况的影响。试验分为妊娠和泌乳两个阶段,均采用完全随机设计。在妊娠阶段,将妊娠70天的杂交母猪24头随机分为3个处理组,分别饲喂添加80mg/kg铁源于硫酸亚铁的玉米 豆粕 小麦麸型饲粮(正对照组)和在正对照组饲粮基础上添加120mg/kg铁源于氨基酸铁络合物的饲粮(有机铁组),以及在正对照组饲粮基础上添加120mg/kg铁源于硫酸亚铁的饲粮(无机铁组)。在泌乳阶段,泌乳母猪继续饲喂以上妊娠母猪的相应处理饲粮,而对来源于以上24头母猪的24窝新生仔猪,则设置成另外3个饲粮铁处理组,即来源于以上正对照组母猪的哺乳仔猪饲喂未添加铁的玉米 豆粕 干乳清粉 鱼粉型基础饲粮开食料(负对照组),来源于以上有机铁组母猪的哺乳仔猪饲喂在负对照组基础上添加120mg/kg铁源于氨基酸铁络合物的饲粮开食料(有机铁组),和来源于以上无机铁组母猪的哺乳仔猪饲喂在负对照组基础上添加120mg/kg铁源于硫酸亚铁的饲粮开食料(无机铁组)。每窝仔猪中有一半于出生后的第1天内以葡萄糖酸铁形式一次性注射100mg铁,另一半则不注射铁。哺乳仔猪于出生后的第5天开始喂给开食料,直到27日龄断奶结束。结果表 相似文献
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氨基酸铁络合物对母猪繁殖性能与哺乳仔猪生长和皮肤颜色的影响 总被引:6,自引:1,他引:5
选用24头已与杜洛克父本配种的妊娠70天的(长×大)杂交母猪及其所生的24窝仔猪,研究不同铁源与注射铁剂补铁对母猪繁殖性能与哺乳仔猪生长和皮肤颜色的影响。结果表明:①有机铁组母猪的新生窝产活仔数和新生窝重分别多于和重于其余两组,但差异均不显著(P>0.18);②硫酸亚铁组仔猪的日增重显著低于其余两组(P<0.05),铁注射恒定改善了0~27(P=0.0001)日龄仔猪的增重;③有机铁组哺乳仔猪的皮肤红度大于负对照组(P<0.02)和硫酸亚铁组(P>0.37),铁注射改善了哺乳仔猪的皮肤红度(P=0.0001),减少了其皮肤黄度(P=0.0001)。以上研究结果表明,在妊娠和泌乳母猪饲粮中添加氨基酸铁络合物有提高母猪繁殖性能的趋势,氨基酸铁络合物在改善哺乳仔猪皮肤红色方面的效果优于硫酸亚铁,但有机铁上述改善效果尚不足以完全代替铁注射。 相似文献
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甘氨酸螯合铁、蛋氨酸螯合铜预防仔猪贫血效果的研究 总被引:9,自引:0,他引:9
选择健康、血统来源相同、预产期相近的妊娠母猪36头,随机分成两组。一组为试验组,另一组为对照组。两组母猪饲喂相同基础日粮。产前至产后两周在试验母猪日粮中添加甘氨酸螯合铁150mg/kg(以铁计,)和蛋氨酸螯合铜10mg/kg(以铜计),其所产仔猪不注射任何铁剂;对照组仔猪生后第2d肌肉注射右旋糖苷铁1ml(含铁150mg),两周龄时重复注射1次。试验结果表明,仔猪出生重、出生窝重、两周龄个体重、0周~2周日增重,两组间差异不显著(P>0.05);两周龄窝仔数,试验组显著高于对照组(P<0.05);两周龄窝重,试验组极显著地高于对照组(P<0.01)。 相似文献
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不同铁源对断奶仔猪生长性能、免疫功能及铁营养状况的影响 总被引:5,自引:1,他引:4
为了比较不同铁源对断奶仔猪生长性能、免疫功能及铁营养状况的影响,选用90头25日龄断奶大白仔猪,随机分为3组,每组3个重复,每个重复10头(公母各半)。各组分别饲喂含硫酸亚铁、富马酸亚铁或甘氨酸亚铁的日粮,日粮中铁添加水平均为150 mg/kg。试验期为28 d。结果表明,各组生长性能指标均无显著差异(P>0.05)。在试验的第28 d,甘氨酸亚铁组血清IgG含量明显高于无机硫酸亚铁组和富马酸亚铁组(P<0.01)。在第14 d,甘氨酸亚铁组的红细胞数略高于硫酸亚铁组(P=0.0518),而富马酸亚铁组与硫酸亚铁组差异不显著(P>0.05)。本试验结果表明,甘氨酸亚铁是一种给断奶仔猪补铁优于硫酸亚铁和富马酸亚铁的安全铁源。 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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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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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
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Fractures of the anconeal process of 5 pigs ranging in age from 4 to 8 months were studied radiographically and histologically. Clinically, animals with a fracture of the anconeal process had a "tight," restricted gait. In pigs at 4.5 months of age, a radiolucent line through the base of the anconeal process was composed of fibrocartilage, fibrous connective tissue, and hyaline cartilage. Subperiosteal proliferation of woven bone was located along the cranial surface of the olecranon, adjacent to the base of the anconeal process. In older animals, the radiolucent line through the anconeal process contained variable amounts of fibrous connective tissue and fibrocartilage. The proliferation of subperiosteal bone at the base of the anconeal process formed a "buttress callus" which retained a radiolucent area between the callus and the proximal surface of the anconeal process. The latter region of radiolucency was continuous with the transversely oriented line that traversed the base of the anconeal process. 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