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《动物营养学报》2015,(9)
本试验旨在研究羟基蛋氨酸螯合锰/锌替代产蛋鸡饲粮中无机锰/锌对产蛋鸡蛋壳品质及微量元素沉积的影响。试验采用单因子设计,共设3个组,羟基蛋氨酸螯合锰/锌分别替代基础饲粮中相应无机锰、锌水平的0、50%和100%。每个组6个重复,每个重复10只60周龄、体重相近的海兰褐蛋鸡,试验期60d,分为2个阶段。结果表明:1)饲粮中不同添加形态的微量元素对产蛋率、平均蛋重、日产蛋量、料蛋比和破蛋率无显著影响(P0.05);2)使用有机微量元素,在减少微量元素的添加量情况下,不影响蛋品质(P0.05);3)饲粮中添加有机微量元素可以显著减少粪便中微量元素铜、锌和锰的排放量(P0.05)。由此可见,在蛋鸡产蛋后期使用有机微量元素有提高产蛋率、日产蛋量和降低料蛋比的趋势;使用有机微量元素在减少微量元素使用量的情况下,降低了粪中微量元素的排放量。 相似文献
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微量元素锌和家畜健康 总被引：1，自引：0，他引：1
1934年,Todd等在大鼠中首先证实锌是高等动物必需的微量元素。以后,相继在猪(Tuker等,1955)、鸡(O'Dell等,1957)、火鸡(Kratzer等,1958)、牛(Legg等,1960)、羊(O'et等,1964)、狗(Robertson等,1964)、鹌鹑(Spirey-Fox等,1965)等动物和人(Rrasad等,1961)中证明锌是机体不可缺少的元素。由于锌的生物学作用极广,与畜牧业生产和人体 相似文献
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《饲料研究》2015,(12)
从规模猪场采集配合饲料和相应猪粪样品154份,其中饲料样品和猪粪样品各77份,采用原子吸收光谱法测定其中的铜和锌含量。结果表明:乳仔猪饲料中铜和锌含量最高,分别为175.41和2 204.83 mg/kg,对应的乳仔猪粪中铜和锌含量也最高,分别达到1 029.28和6 224.57 mg/kg;妊娠母猪和哺乳母猪阶段,饲料和粪中的铜和锌含量较低;育肥猪阶段,饲料和粪中铜和锌含量差异较大。总体上看,粪样中铜和锌含量显著高于饲料中的铜和锌含量,饲料和粪便中铜和锌的相关系数分别为0.87和0.89(P0.01)。建议饲料企业和养猪企业在配制饲料时,应参照猪饲养标准,尽量少加铜和锌制剂,或者使用有机微量元素代替无机微量元素。 相似文献
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不同锌源对蓝狐生长及肝脏中锌铁含量的影响 总被引：1，自引：0，他引：1
为了考察在日粮中添加有机锌和无机锌对于蓝狐生长及肝脏中锌铁含量的影响。选取60日龄断乳蓝狐90只,于2007年8月2日~12月27日进行饲养试验。结果表明:在日粮中添加不同锌源的添加剂对于蓝狐生长及肝脏中锌铁含量的影响是不同的。与无机锌组比较,有机锌低剂量组和有机锌高剂量组在整个试验期的平均日增重分别提高了9.62%和12.67%,而且均差异显著(P<0.05);有机锌低剂量组与有机锌高剂量组之间的差异不显著(P>0.05)。有机锌低剂量组和有机锌高剂量组的肝脏中的锌含量比无机锌组分别提高了4.23%、15.15%,其中有机锌高剂量组极显著高于其他试验组(P<0.01),无机锌组与有机锌低剂量组的差异不显著(P>0.05)。有机锌低剂量组和有机锌高剂量组肝脏中铁的含量虽都比无机锌组略有提高,但差异均不显著(P>0.05)。 相似文献
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肉用仔鸡日粮中添加蛋氨酸铜、锌和锰对粪便微量元素排放的研究 总被引：1，自引：0，他引：1
为了比较肉用仔鸡日粮中添加不同有机微量元素后粪便中铜、锰、锌、排放的影响,试验选择1日龄AA肉仔鸡,分为7个处理,对照组添加无机硫酸盐(锌50mg/kg;铜10mg/kg;锰50 mg/kg),试验组分别用Mintrex-Cu替代5 mg/kg或全部替代硫酸铜;以Min-trex-Zn代替20 mg/kg硫酸锌,以Mintrex-Mn代替20 mg/kg硫酸锰,或在对照组基础上添加20mg/kg的Mintrex-Mn或Mintrex-Zn.42日龄时,采用全收粪法收集粪样72h,用原子吸收分光光度计测定粪样中铜、锰、锌的含量.结果表明:Mintrex-Cu代替50%或100%硫酸铜,对粪便中铜、锌和锰的排泄量没有显著影响(P＞0.05),Mintrex-Zn/Mn替代40%无机锌、锰对锌、锰排泄量没有显著影响(P＞0.05).在基础日粮中额外添加20mg/kgMintrex-Zn/Mn显著提高了粪便中锌、锰的排泄量(P＜0.05),但添加20mg/kgMintrex-Mn降低铜排泄量20%以上(P＜0.05).研究说明,在基础日粮微量元素水平低于需要量的情况下,采用有机微量元素替代无机微量元素对粪便中微量元素排泄量的影响很小,额外添加有机微量元素则提高粪便微量元素的排泄. 相似文献
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锌参与动物体内300余种酶和功能蛋白的组成,它不仅影响营养物质、遗传物质的代谢,同时与许多活性物质有关。锌指蛋白的发现使人们认识到锌以锌指蛋白的方式调控着机体的生命活动,锌指蛋白是基因调控蛋白中最重要的蛋白。本文综述了锌与锌指蛋白的关系以及锌指蛋白对机体贫血的影响,以深入了解机体贫血的机制。 相似文献
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《The Professional Animal Scientist》2002,18(2):162-168
Eighteen weanling crossbred barrows (7.3 kg; 22 d of age) were used in a randomized complete block design to evaluate the effect of supplemental Zn from ZnO on fecal excretion of Zn and other minerals. Pigs were blocked by BW and penned (two pigs per crate) in stainless steel metabolism crates. Dietary treatments were 0, 2,000, or 3,000 ppm supplemental Zn from ZnO. Growth performance and feed intake were measured weekly for a total of 21 d. Excretion of minerals was measured by total fecal collection with indigo carmine marking the beginning and end of each weekly period. No differences (P > 0.05) occurred in ADG, ADFI, and feed/gain (F/G) among treatments. Increasing dietary Zn increased (linear, P < 0.01) Zn intake, absolute absorption of Zn, and absolute fecal excretion of Zn. Increasing dietary Zn also increased absolute excretion of Fe, Cu, and Mn and decreased apparent absorption of P, Fe, and Cu (linear, P < 0.05) for the entire period. Fecal N increased, and N digestibility decreased, with increasing dietary Zn (linear, P < 0.05). Increasing dietary Zn increased fecal DM (quadratic, P < 0.05) and decreased DM digestibility (quadratic, P < 0.05). Increasing dietary Zn also increased liver Zn (quadratic, P < 0.01) and decreased (linear, P < 0.05) liver Cu and Mn. Overall, pharmacological levels of Zn reduced Zn and other mineral apparent absorption and increased fecal mineral excretion. 相似文献
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本研究旨在比较乳酸锌和硫酸锌对仔猪肠上皮细胞IPEC-J2锌转运功能、物理屏障和免疫屏障的影响。将IPEC-J2细胞分别用0、1.0、5.0、7.5、10.0和20.0 mg/mL的乳酸锌或硫酸锌(以锌计)培养36 h,筛选出细胞增殖的最适浓度。根据筛选结果将IPEC-J2细胞随机分为对照组、乳酸锌组和硫酸锌组,每组3个重复。结果表明：1)与对照组相比,7.5 mg/mL乳酸锌和硫酸锌均可显著提高细胞活力(P<0.05),且同等浓度条件下乳酸锌的促进效果更显著。2)与对照组相比,乳酸锌组和硫酸锌组细胞内白细胞介素-1β(IL-1β)和白细胞介素-6(IL-6)含量均显著降低(P<0.05),且硫酸锌组细胞内肿瘤坏死因子-α(TNF-α)含量显著降低(P<0.05),乳酸锌组细胞内TNF-α mRNA相对表达量显著降低(P<0.05)。3)与对照组相比,乳酸锌组细胞内封闭蛋白-1(claudin-1)的蛋白相对表达量显著提高(P<0.05),细胞内E-钙黏蛋白(E-cadherin)的蛋白相对表达量无显著差异(P>0.05)。4)与对照组相比,硫酸锌组... 相似文献
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本试验旨在通过研究聚天门冬氨酸锌（PASP）对生长猪的生长性能、营养物质表观消化率、血清指标、组织器官锌沉积及锌排放的影响，探讨聚天门冬氨酸锌对硫酸锌的替代效果。试验选用体重相近[（31.73±3.50） kg]的（杜×长×大）三元杂交猪90头，随机分为3组，每组6个重复，每个重复5头猪。对照组锌水平及锌源为80 mg·kg-1一水硫酸锌（ZnSO4·H2O），试验Ⅰ组与Ⅱ组锌水平及锌源分别为60与40 mg·kg-1聚天门冬氨酸锌；试验预试期7 d，正试期30 d。结果表明：1）试验组与对照组平均日增重、料重比及腹泻率均无显著差异（P>0.05）。2）试验Ⅰ组和Ⅱ组钙（Ca）消化率显著高于对照组（P<0.05），粗蛋白质（CP）、粗脂肪（EE）、粗纤维（CF）、粗灰分（Ash）及磷（P）表观消化率在各组间无显著差异（P>0.05），试验Ⅰ组锌表观消化率显著高于对照组和试验Ⅱ组（P<0.05）。3）试验Ⅰ组和Ⅱ组粪锌水平分别比对照组降低了21.65%和30.87%，差异显著（P<0.01）。4）对照组血清中谷丙转氨酶（ALT）活性显著高于试验Ⅰ组和Ⅱ组（P<0.05），试验Ⅰ组球蛋白（GLB）水平显著高于对照组和试验Ⅱ组（P<0.05），血糖（GLU）、总蛋白（TP）、白蛋白（ALB）、总胆固醇（TC）及碱性磷酸酶（AKP）等指标在各组间差异不显著（P>0.05）。5）各组间肝、肾、胰、脾、骨骼、毛发、背最长肌中锌的沉积量均无显著差异（P>0.05），试验Ⅰ组和Ⅱ组血清锌浓度显著高于对照组（P<0.05）。综上所述，本试验条件下，饲粮中添加40 mg·kg-1聚天门冬氨酸锌即可满足该阶段猪的生长需要，并显著降低粪中锌的含量，进而证明聚天门冬氨酸锌在生长猪饲粮中可替代高剂量硫酸锌且有一定的减排作用。 相似文献
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This experiment was conducted to study the effects of zinc polyaspartic acid (PASP) monohydrate on growth performance,nutrient apparent digestibility, serum indexes, tissue and organ zinc accumulations and zinc emission of growing pigs, and to determine the substitution effect of zinc polyaspartic acid for zinc sulfate. Ninety Duroc×Landrace×Large White growing pigs with the body weight of (31.73±3.50) kg were randomly assigned into 3 groups with 6 replicates per group and 5 pigs per replicate. The zinc level and source of the control group was 80 mg·kg-1 zinc sulfate, while group Ⅰ and group Ⅱ were 60 and 40 mg·kg-1 zinc polyaspartic acid monohydrate, respectively. Pre-trial period was 7 days, and formal experiment period was 30 days. The results showed as follows: 1) There was no significant difference in average daily gain, feed to weight ratio and diarrhea rate among control group and test groups (P>0.05). 2) The calcium (Ca) apparent digestibilities of test group I and test group Ⅱ were significantly higher than that of the control group (P<0.05); There was no significant difference among groups in apparent digestibility of crude protein (CP), crude fat (EE), crude fiber (CF), crude ash (Ash) and phosphorus (P) (P>0.05). The apparent digestibility of zinc in the test group Ⅰ was significantly higher than those of the control group and the test group Ⅱ (P<0.05). 3) Compared with the control group, the fecal zinc content in the test group Ⅰ and Ⅱ were decreased by 21.65% and 30.87%, respectively, and the difference was significant (P<0.01). 4)The glutamate transaminase (ALT) activity of control group was significantly higher than those of test group Ⅰ and Ⅱ(P<0.05), the globulin(GLB) level of test group Ⅰ was significantly higher than those of control group and test groupⅡ(P<0.05), the indexes of blood glucose (GLU), total protein (TP), albumin (ALB), total cholesterol (TC) and alkaline phosphatase (AKP) were not significantly different among groups (P>0.05). 5)There were no significant difference of the zinc accumulations in liver, kidney, spleen, pancreas, bone, hair, longgissimus dorsi among groups (P>0.05), the serum zinc concentrations of test group Ⅰ and Ⅱ were significantly higher than that of control group (P<0.05). In summary, under this experimental condition, 40 mg·kg-1zinc polyaspartic acid monohydrate could satisfy the needs of growing pigs at this stage, the fecal zinc content was significantly reduced, thus proving the feasibility of adding polyaspartic zinc instead of high dose zinc sulfate in growing pigs’ feed, and the emission reduction of zinc. 相似文献