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1.
１１５只３周龄母鸡被分为４组，分别为３９只、３３只、３１只和１２只。四种日粮分别含氯化胆碱（ＣＣＣ） ：０ ｍｇ／ｋｇ（对照） ；５ ｍｇ／ｋｇ从第１４周龄开始（５ ｍｇ／ｋｇ Ａ） ；５ ｍｇ／ｋｇ从３周龄开始（５ ｍｇ／ｋｇ Ｂ） ；５０ ｍｇ／ｋｇ从第３周龄开始（５０ ｍｇ／ｋｇ Ｂ）。基础日粮根据生长期配合，并进行等氮等能处理。第３～８周日粮干物质ＣＰ和ＭＥ分别为１７．９９ ％和１２．７ ＭＪ／ｋｇ；第９～２０周ＣＰ和ＭＥ分别为１４．６３ ％和１２．７５ ＭＪ／ｋｇ。对鸡采食量、体重变化… 相似文献
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含硫氨基酸与微量元素锰对肉鸡胫骨软骨症的影响 总被引：1，自引：0，他引：1
采用半纯合饲粮（Ｍｎ１．７ｍｇ／ｋｇ）研究过量含硫氨基酸（ＳＡＡ,为推荐量１１．４８ｇ／ｋｇ的１．５倍）与过量锰（Ｍｎ,为需要量６０ｍｇ／ｋｇ的２倍）对肉鸡胫骨软骨症（ＴＤ）的影响。试验将９６只１日龄ＡＡ肉雏鸡随机分为４组,即ＳＡＡ与Ｍｎ常量组（１１．４８ｇ／ｋｇ和６１．７ｍｇ／ｋｇ）,过量ＳＡＡ与常量Ｍｎ组（１７．１８ｇ／ｋｇ和１２１．７ｍｇ／ｋｇ）,常量ＳＡＡ与过量Ｍｎ组（１１．４８ｇ／ｋｇ和１２１．７ｍｇ／ｋｇ）和过量组（１７．１８ｇ／ｋｇ和１２１．７ｍｇ／ｋｇ）。试验２１ｄ的结果表明,过量ＳＡＡ抑制肉鸡生长、胫骨变长,诱导肉鸡ＴＤ的发病率升高;高锰日粮使肉鸡肝、肾、胰、血浆、心、肌肉组织中锰含量升高,诱导肉鸡ＴＤ的发病率上升;当日粮中过量ＳＡＡ和过量锰同时存在时,肉鸡生长的降低加剧,肝、肾、胰、血浆锰含量下降,胫骨长度增加,骨灰含量下降,诱导肉鸡ＴＤ的发病率更为严重。 相似文献
3.
不同锰源及锰水平对雏鸭肝脏脂肪沉积的影响 总被引：1，自引：0，他引：1
选用１日龄北京雏鸭３００只，研究不同锰源及其锰添加水平对雏鸭肝脏脂肪沉积和肝锰含量的影响。试验１随机分为７组，每组３０只试鸭，在基础饲粮中（含Ｍｎ１９ｍｇ／ｋｇ），钙源及锰添加水平依次为４５、８５、１３５ｍｇ／ｋｇ（试剂级ＭｎＳＯ＿４·Ｈ＿２Ｏ或ＭｎＣＯ＿３）。试验２随机分４组，每组３０只试鸭，在基础饲粮上（含Ｍｎ１９ｍｇ／ｋｇ），补锰水平依次为０、１１０、１０００、３５００ｍｇ／ｋｇ（试剂级ＭｎＳＯ＿４·Ｈ＿２Ｏ），试验３周。结果为：锰源不影响雏鸭肝脏脂肪沉积，肝锰含量和千克活体肝重（Ｐ＞０．０５），锰缺乏（含Ｍｎ１９ｍｇ／ｋｇ）或锰过量（补Ｍｎ３５００ｍｇ／ｋｇ）均影响雏鸭肝脏脂肪沉积和肝锰含量变化（Ｐ＜０．０５或Ｐ＜０．０１）。综合试验结果为：如以肝锰变化作为机体锰营养状况评定指标，则饲粮锰适宜添加量为８５～１３５ｍｇ／ｋｇ。 相似文献
4.
0～4周龄肉仔鸡不同锰源锰需要量的研究 总被引：15，自引：1，他引：14
试验将３６０只１日龄ＡＡ（ＡｒｂｏｒＡｃｒｅ）肉鸡公雏随机分为添加锰０ｍｇ／ｋｇ,硫酸锰（ＭｎＳＯ４．Ｈ２Ｏ,下同）６０ｍｇ／ｋｇ,１２０ｍｇ／ｋｇ,１５０ｍｇ／ｋｇ和蛋氨酸锰（Ｍｅｔ－Ｍｎ,下同）４０ｍｇ／ｋｇ,６０ｍｇ／ｋｇ,６个组,６个组基础日粮组成及日粮营养水平相同。试验期为４周。结果表明,所有添加锰组体增重均均显著高于不加锰组（Ｐ〈０．０１）,添加锰６０ｍｇ／ｋｇＭｅｔ－Ｍｎ体增重显著高 相似文献
5.
肉用仔鸡饲粮锌适宜浓度的研究 总被引：9，自引：0，他引：9
本文应用５因素２次回归几乎正交旋转组合设计，采用玉米一豆饼型饲粮（含锌３１．４５ｍｇ／ｋｇ）对４３２＊只ＡｒｂｏｒＡｃｒａ公雏〔３６组、１２只／组）的饲＊钙、负、ｖ。３、Ｂ、锌５因素进行研究，通过建立肉仔鸡体重和组织锌沉积与５因素间的回归模型、预测１０－２周龄的肉＊用仔鸡最大体重和组织锌沉积时，饲粮锌的适宜浓度。＊回归模型的数学分析结果表明：胫骨灰锌沉积与饲粮＊钙、磷、ＶＤ３、锰、锌间建立的回归方程式极显著（Ｐ＜＊０．０１）。获得最大胰脏、胫骨和血清锌沉积的饲粮锌适＊宜浓度范围为１３０－１５０ｍｇ／ｋｇ；获得最大体重的饲粮＊锌适宜浓度为８３ｍｇ／ｋｇ。本试验结果推荐０～２周龄肉用仔鸡饲粮锌的适宜浓度为８３－１５０ｍｇ／ｋｇ。 相似文献
6.
采用３．０Ｍｒａｄ＾６０ＣＯ－γ射线辐照和高压熏（１２１℃，２０ｍｉｎ）ＳＰＦ鸡饲料，并对处理后中料营养成分于试验后７天进行分析，辐照后７天粗蛋白、ＶＡ、ＶＤ３、ＶＥ、ＶＢ１、ＶＢ２、ＶＢ６、ＶＢ１２、Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ、Ｓｅ的损失率（％）依次为１．１、４．４、２．３、５．３、５．０、６．７、１０．０、０、０、０、。辐射后ＶＢ６、Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ、Ｓｅ的损失率（％）依次为９．７、１１．５ 相似文献
7.
肉鸭生长期饲粮养分适宜浓度范围的研究 总被引：5，自引：0，他引：5
选用６４０只（公母各半）１日龄天府肉鸭（平均体重５７．０±３．０ｇ），按性别随机分成３２组，采用５因素部分实施的二次回归通用旋转组合设计，估测了为最大增重加和最大胸腿肌率时肉鸭生长期饲粮ＭＥ、Ｃａ，ＴＰ，ＡＰ和ＣＰ的适宜浓度范围和Ｎａ的适宜添加水平。试验结果表明：最大增重时，肉鸭饲粮ＭＥ适宜水平为：０－３周１２．７５ＭＪ／ｋｇ，４－７周１２．６６ＭＪ／ｋｇ，养分适宜浓度为：０－３周，ＣＰ１７．７０ 相似文献
8.
饲喂不同蛋白水平日粮的牦牛瘤胃氮代谢与十二指肠各氮组分流量 总被引：4，自引：2，他引：2
采用瘘管手术方法对３头生长牦牛在饲喂代谢能ＭＥ均为９．６ＭＪ／ｋｇＤＭ，粗蛋白（ＣＰ）为８％和１２％的日粮时的复胃氮代谢与瘤胃、肠道消化代谢进行研究。试验结果表明，日粮ＣＰ水平升高后，生长牦牛瘤胃氨氮浓度由３．３升至５．９ｍｇ／１００ｍｌ（Ｐ＜０．０１），瘤胃内氮的消失率由１．９％升到２１．１％（Ｐ＜０．０１）。瘤胃微生物蛋白质合成效率基本不变（平均６９．１ｇＣｐ／ｋｇＤＯＭ）；一昼夜进入十二指肠的食糜量及食糜干物质量基本不变；食糜总氮、氨氮及非氨氮量均显著增加（Ｐ＜０．０１），其中非氨氮增加２０％：非氨氮中微生物氮的比例由４５％降至３９％（Ｐ＜０，０５）；日粮ＤＭ，ＯＭ，ＣＰ和ＡＤＦ整体消化率分别提高１２．９％、１３．４％、３４％和２２．３％（Ｐ＜０．０１）。日粮ＣＰ由８％升至１２％后，生长牦牛瘤胃ＴＶＦＡ中乙酸比例由５４％降至４３．５％（Ｐ＜０．０１）．丙酸比例由２４．８％升至２８．４％（Ｐ＜０．０５），丁酸比例也由２１．１％增至２８．５％（Ｐ＜０．０１）。同时Ｃ２／Ｃ３比由２．１９降至１．５４（Ｐ＜０．０１）。 相似文献
9.
抗氧化微营养素对缓解蛋鸡热应激的研究 总被引：2，自引：0，他引：2
在热应激条件下，向蛋鸡日粮中添加不同水平的Ｖｃ、Ｓｅ、Ｃｕ、Ｚｎ四种抗氧化微营养素。结果表明，抗氧化微营养素（Ｖｃ１０００ｍｇ／ｋｇ，Ｓｅ０．３ｍｇ／ｋｇ，Ｃｕ４０ｍｇ／ｋｇ，Ｚｎ８５ｍｇ／ｋｇ）能有效缓解热应激，提高产蛋率和饲料报酬，同时改善蛋壳品质。 相似文献
10.
11.
0～2周龄肉用仔鸡日粮中锰需要量的研究 总被引：2，自引：0，他引：2
应用5因子5水平部分实施的2次回归几乎正交旋转组合设计，采用玉米-豆粕型口粮，对432只AA（ArborAcres）公雏日粮中锰（Mn）、锌（Zn）、钙（Ca）、磷（P）、维生素D3（VD3）5因素进行研究，通过建立肉仔鸡体重、不同组织中锰浓度以及生化指标与5因子间的多元二次回归模型，预测0～2周龄肉仔鸡生产性能最佳、各组织中锰浓度和锰超氧化物歧化酶（Mn－SOD）活性最大时，日粮中锰的适宜添加量。统计分析结果表明，肾脏、脾脏中锰浓度分别与5因子建立的预测回归方程达到极显著（P＜0．01）和显著（P＜0．05）。获得最大体重、肾脏和胰脏的锰浓度的锰适宜添加量为79～83mg／kg，获得最大Mn－SOD活性的锰适宜添加量为98mg／kg，获得最大肝脏、脾脏锰浓度和最高饲料转化效率（F／G）的锰适宜添加量为118～127mg／kg，以生产性能为目标的锰需要量低于生理需要量。根据本研究结果作者推荐0一2周龄肉仔鸡口粮锰的适宜添加量为79～127mg／kg。 相似文献
12.
1. In a 42-d feeding trial, 264 one-d-old, as hatched, Cobb 400 broiler chickens (6 pens per group, n = 11 per pen in a 2?×?2 factorial arrangement) were fed on two concentrations of dietary calcium (Ca) (9.0 and 7.5 g/kg in starter, 7.5 and 6 g/kg in grower phases) and supplemental phytase (0 and 500 U/kg diet). 2. During d 0–21, the high Ca + phytase diet improved body weight. During d 0–42, feed intake was increased by the low Ca diet and decreased by phytase supplementation. Feed conversion ratio during d 0–21 was improved by the high Ca + phytase diet. 3. At d 42, Ca in duodenal digesta was reduced by low dietary Ca and supplemental phytase. High dietary Ca reduced P in duodenal and jejunal digesta. Phytase reduced digesta P and increased serum P concentration. 4. Relative tibia length decreased with low dietary Ca and increased with phytase. The robusticity index of tibia was improved by the low Ca diet and phytase supplementation. Phytase supplementation increased tibia ash and concentrations of Ca, magnesium (Mg), manganese (Mn), copper (Cu), zinc (Zn) and iron (Fe) in tibia. The low Ca diet increased Mg, Mn and Fe and reduced Cu and Zn in tibia. 5. It was concluded that 7.5 g Ca/kg during weeks 0–3 and 6 g Ca/kg during weeks 3–6 sustained broiler performance and bone ash, while phytase supplementation facilitated tibia mineralisation, particularly during the grower phase. 相似文献
13.
Ao T Pierce JL Pescatore AJ Cantor AH Dawson KA Ford MJ Shafer BL 《British poultry science》2007,48(6):690-695
1. The purpose of this study was to investigate the effects of Bioplex Zn (a chelated zinc proteinate) and phytase supplementation in a maize-soybean meal diet on the performance and tissue zinc (Zn) content of broiler chicks. Treatment structure consisted of a 2 x 6 factorial arrangement with two inclusions of phytase (0 or 500 PU/kg) and 6 of Bioplex Zn providing 0, 2, 4, 8, 16 and 32 mg Zn/kg diet. A total of 864 chicks were randomly assigned to each of 12 dietary treatments with 6 replicate cages of 12 chicks. 2. Dietary inclusion of phytase increased feed intake, weight gain, plasma Zn content, tibia Zn content, tibia and ash weight. 3. Dietary supplementation of Bioplex Zn linearly increased feed intake, weight gain, gain to feed ratio, plasma Zn concentration, liver Zn concentration, tibia Zn content, tibia and ash weight. 4. An interactive effect of phytase and Bioplex Zn on feed intake, weight gain, tibia Zn concentration and tibia ash weight was found. 5. One slope, straight broken-line analysis of weight gain regressed on the supplemental Zn level provided as Bioplex Zn indicated that 12 mg/kg supplemental Zn without phytase and 7.4 mg/kg supplemental Zn with phytase were required for the optimal weight gain of chicks. 相似文献
14.
Dietary cholecalciferol and phosphorus influence intestinal mucosa phytase activity in broiler chicks 总被引：1，自引：0，他引：1
1. The role of cholecalciferol and phosphorus in the regulation of intestinal mucosa phytase was investigated in broiler chicks. 2. A total of 144 7-d-old male broiler chicks were grouped by weight into 6 blocks of 4 cages with 6 broiler chicks per cage. Four maize-soybean meal-based mash diets were randomly assigned to cages within each block. The 4 diets consisted of cholecalciferol at 0 or 75 microg/kg and total phosphorus at 3.6 or 7.0 g/kg in a 2 x 2 factorial arrangement. The birds were given the experimental diets for 12 d under conditions which excluded ultraviolet light. 3. Broiler chicks fed on diets with the higher concentration of cholecalciferol had higher Vmax and Km of the mucosa phytase, weight gain, feed intake, feed efficiency and percentage tibia ash, higher ileal digestibility of dry matter, energy, phosphorus (P) and calcium (Ca), and increased retention of dry matter, nitrogen, P, Ca and energy. 4. Broiler chicks receiving diets with the higher P concentration showed lower Vmax and Km of the intestinal mucosa phytase but greater weight gain, feed intake, feed efficiency and percentage tibia ash, higher ileal digestibility of dry matter, energy, P and nitrogen, and increased retention of dry matter, energy, nitrogen and Ca. 5. In conclusion, both dietary P and cholecalciferol influenced the activity of intestinal mucosa phytase. 相似文献
15.
日粮锰对肉仔鸡组织器官锰、铜、锌沉积的影响 总被引：1，自引：0，他引：1
选用 1日龄艾维茵肉仔鸡 ,采用单因子多水平随机化试验设计 ,随机分成 6组 ,每组 3个重复 ,每个重复 8只鸡。在玉米 豆粕型基础日粮中分别添加锰 (MnSO4 ·H2 O) 0 ,40 ,80 ,1 2 0 ,1 60 ,2 0 0mg/kg ,研究日粮锰对肉仔鸡组织器官锰、铜、锌沉积的影响。结果表明 :在肉仔鸡日粮中添加 40 2 0 0mg/kg的锰 ,对胫骨锰、肝脏锰和肾脏锰的沉积有显著的影响 (P <0 0 5) ;日粮锰的添加对肝铜和肾铜沉积无明显影响 (P >0 0 5) ,但日粮锰添加量超过 1 2 0mg/kg时 ,能够减少胫骨铜的沉积 (P <0 0 5) ;对胫骨、肝和肾中锌的沉积无明显影响(P >0 0 5)。 相似文献
16.
饲粮高铁对肉仔鸡十二指肠黏膜铁转运载体基因表达及组织微量元素含量的影响 总被引：1，自引：0，他引：1
本试验旨在研究饲粮铁含量对肉仔鸡组织重要微量元素铁、锰、铜、锌含量及十二指肠黏膜主要铁转运载体基因表达的影响,探讨铁对肉仔鸡微量元素吸收和代谢的影响及其机制。将336只1日龄商品代罗斯308肉公雏按照体重随机分成4个组,每组6个重复,每个重复14只鸡。对照组饲喂不额外添加铁的基础饲粮(实测铁含量为78 mg/kg),铁添加组分别饲喂以七水硫酸亚铁(FeSO_4·7H_2O)形式添加100、250或500 mg/kg铁的试验饲粮(实测铁含量分别为166、308和579 mg/kg)。试验期21 d。各组试鸡分别于7、14和21日龄屠宰分析肝脏、心脏、胰腺、十二指肠黏膜和胫骨灰中铁、锰、铜、锌含量及十二指肠黏膜中二价金属转运蛋白(DMT1)和膜铁转运蛋白(FPN1)mRNA表达水平。结果表明:1)500 mg/kg铁添加组1~7日龄和8~14日龄的平均日增重显著低于其他3组(P0.10),250和500 mg/kg铁添加组1~7日龄的平均日采食量显著低于其他2组(P0.10)。2)饲粮铁含量对肉仔鸡7、14、21日龄的血浆总铁结合力以及全血血红蛋白浓度(7日龄除外)和红细胞压积均无显著影响(P0.10),但显著影响7、14和21日龄血浆铁含量和铁饱和度(P0.10),二者均随饲粮铁含量增加而升高。3)7和14日龄心脏及7、14和21日龄肝脏、十二指肠黏膜、胰腺和胫骨灰铁含量均随饲粮铁含量的增加而升高,7、14和21日龄十二指肠黏膜、胰腺和胫骨灰锰含量均随饲粮铁含量的增加而降低;饲粮添加铁显著降低7日龄胰腺锌含量(P0.10),但对其他日龄胰腺和各日龄其他所测组织锌含量以及各日龄所测各组织铜含量均无显著影响(P0.10)。4)饲粮铁含量显著影响7、14和21日龄十二指肠黏膜DMT1和FPN1 mRNA表达水平(P0.10),各日龄DMT1和FPN1mRNA表达水平均随饲粮铁含量的增加而降低。以上结果提示,高铁饲粮可能通过调控十二指肠黏膜DMT1和FPN1基因的表达降低锰和锌在肠道的吸收,进而减少锰和锌在组织中的沉积。 相似文献
17.
Alip Kumar Abdolreza Hosseindoust MinJu Kim KwangYeol Kim YoHan Choi SeokHee Lee SongYi Lee JunHyung Lee HyunJong Cho Wei Soo Kang ByungJo Chae 《The Journal of Poultry Science》2021,58(1):21
The effects of dietary supplementation of zinc (Zn) sources and concentrations were investigated on growth performance, absorption into tissues, fecal excretion, nutrient retention, and intestinal morphology in broilers fed a corn-soybean meal basal diet. A total of 525 one-day-old chicks (Ross 308) were assigned based on body weight to seven dietary treatments. There were five replicate pens for each treatment and 15 broilers per replicate pen. The dietary treatments included a basal diet (control, without supplementing Zn), and basal diet supplemented with Zn, as inorganic zinc sulfate (ZnS; 110 mg/kg); organic Zn-methionine (ZnM; 110 mg/kg); hot-melt extruded (HME) 25 zinc sulfate (27.5 mg/kg); HME50 zinc sulfate (55 mg/kg); HME75 zinc sulfate (82.5 mg/kg); or HME100 zinc sulfate (110 mg/kg) for 35 days in two phases (d 1–21, phase I and d 22–35, phase II). Bodyweight and feed efficiency of broiler chicks fed diets supplemented with increasing dietary concentrations of HME-Zn improved linearly during the study period (P<0.05). Compared to the control treatment, the ZnS, ZnM, and HME diets increased Zn concentrations in the serum and liver. Inorganic ZnS supply resulted in the highest Zn concentration in excreta. Increasing supplemented Zn content in diets as HME linearly increased Zn concentration in the excreta, serum, liver, and tibia. Broiler chicks fed diets supplemented with increasing concentrations of HME increased villus height (VH; linear and quadratic) of the jejunum and VH of the ileum (linear). Increasing concentrations of dietary Zn supplied as HME resulted in linearly enhanced dry matter, gross energy, and nitrogen retention of broilers on day 21. These results suggest that dietary HME-Zn at a lower level (55 ppm) shows the same growth performance as common ZnSO4 at 110 ppm. 相似文献
18.
为研究不同锰源与锰水平对肉仔鸡的生产性能与组织矿物元素沉积的影响,试验采用2×5完全随机试验设计,在玉米—豆粕型基础日粮(锰含量为37.66mg/kg)中添加0、45、90、130、180mg/kg(5个锰添加水平)的复合氨基酸锰和硫酸锰(2种锰源),构成10个日粮处理组,将540只1日龄健康艾维茵肉仔鸡随机分为10个处理组,开展肉仔鸡饲养试验(共42d)。于35日龄时测定其生产性能指标,计算料肉比;于42日龄时测定其胫骨、肝脏、肾脏组织中铜、铁、锌浓度以及胫骨灰分、钙及磷含量。结果表明,在上述日粮中,锰添加量在45~130mg/kg时,无论是添加复合氨基酸锰组还是添加硫酸锰组35日龄肉仔鸡体重和采食量较未添加组差异显著(P≤0.05),经分析,锰水平对其平均体重及采食量有极显著影响(P<0.01);不同锰源的35日龄肉仔鸡体重、采食量、料肉比差异不显著(P >0.05)。42日龄肉仔鸡胫骨、肝脏、肾脏组织中铜、锌、铁含量及胫骨灰分、钙磷含量未受锰源和锰水平及两者互作的显著影响(P >0.05)。由以上结果可以得出,锰水平对肉仔鸡生长性能有极显著影响(P<0.01);锰源对肉仔鸡生产性能无显著影响(P >0.05);锰源和锰水平及两者互作对肉仔鸡组织矿物元素沉积无显著影响(P >0.05)。 相似文献
19.
Fengli Zhao Chao He Huanwei Peng Keying Zhang Xuemei Ding Jianping Wang Qiufeng Zeng Yue Xuan Shiping Bai Changqing Yu 《Journal of animal physiology and animal nutrition》2019,103(1):108-115
The experiment was conducted to investigate the bioavailability of manganese (Mn) from humate–Mn complex relative to Mn sulphate for the starter broilers fed a conventional corn–soya bean meal diet. A total of 560 1‐day‐old Arbor Acres male broiler chicks were randomly allotted to one of eight replicate cages (10 chicks per cage) for each of seven treatments in a completely randomized design involving a 2 × 3 factorial arrangement of treatments with two Mn sources (humate‐Mn and Mn sulphate) and three levels of added Mn (60, 120 or 180 mg Mn/kg) plus a Mn‐unsupplemented control diet containing 27.23 mg Mn/kg by analysis. At 14 days of age, the blood, liver, heart and tibia were collected for Mn analyses, and the activity and mRNA abundance of heart manganese superoxide dismutase (MnSOD). The results showed that humate‐Mn supplementation decreased feed intake from day 1 to day 14, whereas it did not influence (p > 0.20) body weight at day 14 as compared to Mn sulphate. The Mn source did not influence Mn concentration in the liver, heart and tibia, and the activity and mRNA abundance of heart MnSOD, while humate‐Mn decreased plasma Mn as compared to Mn sulphate. The Mn concentration in the plasma and heart, and the activity and mRNA abundance of heart MnSOD increased linearly as dietary Mn concentration increased. Based on slope ratios from multiple linear regressions of Mn concentrations in the plasma and heart, and the activity and mRNA abundance of heart MnSOD on daily intake amount of dietary analysed Mn, the bioavailability of humate–Mn complex relative to Mn sulphate (100%) was 82.8, 90.4, 82.8 and 81.9 respectively. These results indicated that the Mn from humate‐Mn complex was just as bioavailable as the Mn from Mn sulphate for the starter broilers (day 1–14). 相似文献
20.
Effect of inorganic and organic manganese supplementation on the performance and tissue manganese content of broiler chicks 总被引：2，自引：0，他引：2
Berta E Andrásofszky E Bersényi A Glávits R Gáspárdy A Fekete SG 《Acta veterinaria Hungarica》2004,52(2):199-209
The effects of dietary levels of manganese (Mn) in inorganic (MnO) and organic (Mn fumarate) forms were evaluated on cockerel chicks. A basal corn-soybean diet with 23 mg/kg Mn was supplemented with levels of 0, 30, 60 and 240 ppm Mn from both Mn sources. Each treatment was replicated in five pens of 10 chicks. The chicks were fed diets ad libitum from 14 to 49 days of age, after which five birds per treatment were sacrificed for pathomorphological examinations and analysis. The treatments did not exert significant effects on the body weight (BW), the feed/gain (F/G) ratio or the mortality rate. According to the necropsy findings, no growth retardation or emaciation occurred in either of the groups and the differences in the average absolute and relative organ weights were not significant (P > 0.05). Tissue analysis indicated that the tibia showed the greatest response to Mn, followed by the liver and kidney. Accumulation in the tibia was higher (P < 0.05) with supplements of 30, 60 and 240 mg/kg from both Mn sources (3.71, 3.78, 4.44, and 3.68, 4.00, 4.36 mg/kg DM, MnO and Mn fumarate, respectively) compared to the control group (3.21 mg/kg). Accumulation in the liver increased significantly (P < 0.05) only with supplements of 60 and 240 ppm independently of the Mn source (12.7, 14.2, and 14.0, 14.9 mg/kg, respectively) compared to the control (9.8 mg/kg). Similarly, kidney tissue Mn was higher (P < 0.05) only with supplements of 60 and 240 ppm (12.8, 12.8, and 13.1, 12.5 mg/kg, respectively) compared to the control (10.2 mg/kg). At the same level of supplementation of the two Mn sources there were no significant differences (P > 0.05) between the Mn concentrations of organs and tissues. Droppings sensitively reflected the intake, whereas blood plasma and feathers showed only the extreme Mn loading. 相似文献