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不同铁制剂对小猪生产性能、肤色和血液生化指标的影响 总被引：7，自引：0，他引：7
本试验以ＦｅＳＯ4为对照 ,研究络合铁对小猪生产性能、肤色、毛况和血液生化指标的影响 ,探讨合理使用络合铁的方法。1 材料与方法1 1 试验动物 试验选用体重约 1 3ｋｇ杜×大×长三元杂交仔猪 70头 (阉公猪和小母猪各半 ) ,随机分为 7组 ,每组 2个重复 ,每个重复 5头仔猪。1 2 试验饲粮 络合铁采用广东省农科院畜牧所南都饲料营养药品厂出产的富力铁 ,试验前测定硫酸亚铁、富力铁中Ｆｅ2 的含量。试验基础日粮组成及营养水平见表 1。表 1 试验基础日粮组成和营养水平含量含量日粮组成玉米 ( % ) 68.19豆粕 ( % ) 2 7.3 0进口鱼粉… 相似文献
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大蒜素对蛋鸡产蛋性能的影响 总被引：6，自引：0，他引：6
选择 5 4周龄健康罗曼商品蛋鸡 4 0 0只 ,随机分成 5组 ,每组两个重复 ,每个重复 4 0只鸡 ,采用单因子完全随机设计 ,研究蛋鸡日粮中添加大蒜素对蛋鸡产蛋性能的影响。大蒜素的添加水平为 :0、2 0、4 0、80、16 0mg/kg。试验期为 38d。结果表明 ,蛋鸡日粮中添加 4 0mg/kg大蒜素 (大蒜素含量为4 0 % )可使产蛋率提高 11 15 % (P <0 0 5 ) ,料蛋比降低 5 94 % (P <0 0 1) ,日均采食量提高 7 6 4 % (P<0 0 1) ,经济效益显著 相似文献
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大蒜素对断奶仔猪血清生化指标及生长相关激素的影响 总被引：2，自引：0，他引：2
为了研究大蒜素(allicin)对断奶仔猪血清生化指标和生长相关激素的影响,试验选择21日龄体重5.6kg左右的断奶仔猪(杜×长×大)24头,随机分为3个处理,每个处理4个重复,每个重复2头,处理1饲喂基础日粮(对照组),处理2饲喂基础日粮+0.01%大蒜素(试验组),处理3饲喂基础日粮+0.07%抗生素(抗生素组),试验期21d,测定了仔猪血清生化指标、生长相关激素的变化。结果表明:大蒜素能改善断奶仔猪血清生化指标和生长相关激素水平。大蒜素组血清LDL(低密度脂蛋白)、CHO(总胆固醇)和GLU(葡萄糖)含量在断奶后第7d比对照组高23.9%、38.1%(P<0.05)、11.4%;第14d高14.7%(P<0.05)、15.6%、12.0%。断奶后SUN(血清尿素氮)含量升高,大蒜素组和抗生素组低于对照组;各处理血清ALP(碱性磷酸酶)活性有升高的趋势。大蒜素组FT3、IGF-1含量及FT3/FT4显著高于对照组(P<0.05)。整个试验期大蒜素组与抗生素组各项指标差异不显著。 相似文献
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饲用复合酶制剂在蛋鸡杂粕日粮中的应用效果研究 总被引：7，自引：0，他引：7
本试验旨在以棉籽粕、菜籽粕、花生粕为蛋白质来源的低成本饲料中添加饲用复合酶制剂 ,研究饲用复合酶制剂在蛋鸡杂粕日粮中的作用效果。1 材料与方法1 1 试验动物和试验饲粮 选择 1 0 0 0只 1 7周龄罗曼蛋鸡 ,随机分成 5组 ,每组 4个重复 ,每个重复 50只。 5组蛋鸡分别饲以 5种饲粮 :饲粮 1(玉米 -豆粕型 )、饲粮 2 (玉米 -杂粕型 )、饲粮 3(饲粮 2 0 1 %饲用复合酶制剂 )、饲粮 4(饲粮 2 0 2 %饲用复合酶制剂 )、饲粮 5(饲粮 2 0 3 5%饲用复合酶制剂 ) ,试验饲粮配方组成及营养水平见表 1。饲用复合酶制剂为珠海经济特区溢多利有… 相似文献
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文章旨在评估日粮添加不同水平大蒜素作为促生长剂对肉仔鸡生长性能、血液指标和胴体品质的影响。试验选择1日龄白羽肉鸡252只,随机分为3组,每组84只(每组4个重复,每个重复21只)。试验采用玉米-豆粕型日粮,各组日粮中分别添加0%、2%和4%大蒜素,试验共进行42d,分析肉鸡生长性能和血液指标。结果:日粮添加2%大蒜素显著提高肉鸡采食量、体增重、末重及饲料转化率(P<0.05)。各组日粮对肉鸡的屠宰率无显著影响(P>0.05)。2%大蒜素组胸肌重量最高(P<0.05),而4%大蒜素组胸肌重最低(P<0.05)。大蒜素组对肉鸡法氏囊和胸腺重量的影响无显著差异(P>0.05)。2%和4%大蒜素组较对照组显著降低了脾脏重量(P<0.05)。日粮大蒜素添加水平对肉鸡血液淋巴细胞、单核细胞、嗜酸性粒细胞、嗜中性粒细胞占比、红细胞压积、红细胞数和白细胞数均无显著影响(P>0.05)。结论:肉鸡饲喂添加2%大蒜素日粮生长性能参数最好,而4%大蒜素组最低,因此,肉鸡日粮中大蒜素适宜添加水平为2%。 相似文献
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随着水产养殖的集约化发展 ,鱼病增多 ,导致在鱼饲料中大量使用抗生素以防病促长。抗生素的副作用越来越突出 ,严重阻碍水产养殖业健康持续发展。我们用几种非抗生素饲料添加剂对鲫鱼种促生长效果进行了比较研究 ,以期能为水产用绿色添加剂的开发提供参考。1 材料和方法1 1 试验设计 单因子试验设计 ,共 4个处理 ,每个处理 3个重复。基础饲料配方与营养水平见表 1 ,处理方案见表 2。表 1 基础饲料配方与营养水平 %配比配比日粮组成豆粕 2 2菜籽粕 1 4棉籽粕 1 0鱼粉 1 8啤酒糟 3次粉 2 3磷脂粉 3蛋白胨 2预混料 5营养水平粗蛋白质 35(3… 相似文献
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复合酶制剂对育成鸡营养物质利用率的影响 总被引：3，自引：0，他引：3
在青海地区小麦的种植面积大,资源丰富且价格相对较低,为了充分利用青海的饲料资源,进行了以青海小麦和菜籽粕为基础日粮,在此基础上添加不同水平的复合酶,研究育成鸡对营养物质的消化与吸收。1材料与方法1.1基础日粮(见表1)1.2试验鸡与分组试验用同日龄的育成鸡480只,随机分成4组,3个试验组,1个对照组,每组120只,每组5个重复,每个重复24只鸡。试验1组、2组和3组的日粮是在基础日粮的基础上用0.05%、0.10%、0.15%的复合酶制剂替代相应日粮中的玉米的含量,对照组饲喂基础日粮。表1基础日粮含量含量项目含量小麦/Q·0赖氨酸/%0.10玉米/·… 相似文献
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本试验旨在验证富酶利生素对肉仔鸡生产性能和肠道菌群的影响。1 材料与方法1 1 富酶利生素 由上海创博生态工程有限公司生产的富酶利生素主要包括枯草芽孢杆菌、乳酸杆菌、酵母菌等菌株 ,活菌数≥ 5× 1 0 9ＣＦＵ/ｇ ,在机体内代谢可产生多种消化酶、小肽和未知促生长因子。1 2 基础日粮 自配 ,配方见表 1。表 1 基础日粮组成及营养水平1(0～ 3周龄 ) 2 (4～ 7周龄 )日粮组成玉米 (% ) 61 4864 3 3豆粕 (% ) 2 82 6鱼粉 (% ) 5 0 3 5骨粉 (% ) 1 2 2 1 89食盐 (% ) 0 3 0 0 2 8预混料 (% ) 4 0 0 4 0 0营养水平代谢能 (ＭＪ/… 相似文献
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蛋氨酸螯合锌在黄羽肉鸡生产中的应用研究 总被引：4，自引：0，他引：4
1材料和方法1.1试验设计试验共设4个处理组,具体见表1。每处理组3重复,每重复50只鸡(雌雄各半)。表1试验设计处理组硫酸锌蛋氨酸螯合锌Zn-0--ZnSO4-6060mgZn/kg-Zn(Met)2-60-60mgZn/kgZn(Met)2-30-30mgZn/kg表2试验饲粮组成及主要营养指标饲料原料组成(%)1～21日龄22～42日龄43～63日龄玉米58.5063.1065.80次粉--2.50豆粕31.1526.7022.90植物油1.852.702.94鱼粉2.51.50-玉米蛋白粉1.271.451.40石粉1.271.201.14氢钙1.461.351.32预混料①2.002.002.00合计100.00100.00100.00营养成分②代谢能(MJ/kg)12.1212.5412.75粗蛋白质(%)21.0019.… 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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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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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