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首页> 外文期刊>Asian-Australasian Journal of Animal Sciences >Effects of Different Sources of Dietary Chromium on Growth, Blood Profiles and Carcass Traits in Growing-finishing Pigs
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Effects of Different Sources of Dietary Chromium on Growth, Blood Profiles and Carcass Traits in Growing-finishing Pigs

机译：日粮铬源对成年猪生长，血型和Car体性状的影响

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摘要

This study was carried out to evaluate the effects of dietary supplementation of different sources of chromium on growth performance, blood profile and carcass trait in growing-finishing pigs. A total of 200 growing pigs (Landrace x Yorkshire) x Duroc, average initial weight 8.5 kg) were allotted to 5 treatments with 4 replicates per treatment and 10 pigs per replicate. Five treatments were designated as follows according to the source of chromium. i) Control (No chromium): corn-soybean meal based basal diet, ii) CrCl3: control diet+200 ppb Cr as CrCl3, iii) CrPic: control diet+200 ppb Cr as Cr picolinate, iv) CrMet-1: control diet+100 ppb Cr as Cr methionine, and v) CrMet-2: control diet+200 ppb Cr as Cr methionine. After the feeding trial, three pigs per replicate (12 pigs per treatment) were slaughtered for the evaluation of carcass traits. Average daily gain (ADG), average daily feed intake (ADFI). and feed: gain ratio (F/G) were not different (p>0.05) among dietary Cr sources. However, whole-period ADG of pigs fed CrPic, CrMet-1 and CrMet-2 diets was higher (p<0.05) than for the control diet. Nutrient digestibility was not different (p>0.05) among dietary Cr sources, but the nutrient digestibility of pigs fed CrPic, CrMet-1 and CrMet-2 diets was higher (p<0.05) than for the control diet. BUN level decreased with more magnitude (p<0.05) in pigs fed Cr during the 20 to 50 kg period. Although both serum cholesterol and triglyceride were different (p<0.05) among treatments, there was no consistent response that could be related to the dietary Cr sources regardless of growth phase. However, the overall data suggested that serum cholesterol level increased as BW of pigs increased. Blood total protein (TP) increased (p<0.05) in pigs fed Cr only during the 90-110 kg phase, and blood creatinine (Creat) level was higher in CrCl3 and CrPic treatments than in the control only during the 90-110 kg phase. Backfat thickness was thinner (p<0.05) in pigs fed CrMet-2 than in the control treatment. Therefore, lean percentage was higher (p<0.05) in CrMet-2 than in control pigs. However, dressing percentage and Longissimus muscle area (LMA) were not different (p>0.05) among treatments. In conclusion, dietary supplementation of 200 ppb Cr, via either CrPic or CrMet, improved pig growth performance and nutrient digestibility. Moreover. dietary CrMet supplementation for the growing-finishing pig is evidently remarkable for improving both lean percentage of the carcass and backfat thickness.
机译：这项研究旨在评估日粮中补充不同来源铬对生长肥育猪的生长性能，血液状况和car体性状的影响。将总共​​200头生长猪（Landrace x Yorkshire）x Duroc，平均初始重量为8.5 kg）分配给5种处理，每个处理4个重复，每个重复10只。根据铬的来源，指定了五种处理方法。 i）对照（无铬）：基于玉米豆粕的基础日粮，ii）CrCl3：对照日粮+ 200 ppb Cr作为CrCl3，iii）CrPic：对照日粮+200 ppb Cr作为吡啶甲酸铬，iv）CrMet-1：对照日粮+ 100 ppb铬作为Cr蛋氨酸，v）CrMet-2：对照日粮+200 ppb Cr作为Cr蛋氨酸。饲喂试验后，每头重复宰杀三头猪（每次处理十二头猪），以评估car体性状。日平均增重（ADG），日平均采食量（ADFI）。饲料中铬的来源之间的饲料：增重比（F / G）没有差异（p> 0.05）。但是，饲喂CrPic，CrMet-1和CrMet-2日粮的猪的整个时期的ADG均高于对照日粮（p <0.05）。膳食铬源之间的养分消化率没有差异（p> 0.05），但饲喂CrPic，CrMet-1和CrMet-2的猪的养分消化率高于对照膳食（p <0.05）。在20至50公斤期间，饲喂Cr的猪的BUN水平下降幅度更大（p <0.05）。尽管治疗之间的血清胆固醇和甘油三酯均不同（p <0.05），但无论生长阶段如何，都没有与饮食中铬源有关的一致反应。但是，总体数据表明，血清胆固醇水平随着猪体重的增加而增加。仅在90-110 kg阶段，饲喂Cr的猪的血液总蛋白（TP）升高（p <0.05），而仅在90-110 kg期间，CrCl3和CrPic处理的血肌酐（Creat）水平高于对照组相。饲喂CrMet-2的猪的背脂肪厚度比对照组更薄（p <0.05）。因此，CrMet-2的瘦肉率比对照组高（p <0.05）。然而，治疗之间的敷料百分比和最长肌面积（LMA）没有差异（p> 0.05）。总之，通过CrPic或CrMet膳食补充200 ppb的Cr可改善猪的生长性能和养分消化率。此外。生长肥育猪的日粮CrMet补充剂对于改善体的瘦肉率和后脂肪厚度显然是显着的。

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