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首页> 外文期刊>Animal Feed Science and Technology >Effects of supplemental chromium sources and levels on performance, lipid peroxidation and proinflammatory markers in heat-stressed quails.
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Effects of supplemental chromium sources and levels on performance, lipid peroxidation and proinflammatory markers in heat-stressed quails.

机译：补充铬源和含量对热应激鹌鹑生产性能，脂质过氧化和促炎标志物的影响。

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This experiment was conducted to evaluate the effects of supplemental Cr source and level on performance, and lipid peroxidation and proinflammatory markers in heat-stressed Japanese quails (Coturnix coturnix japonica). A total of 360 birds (10 days old) were assigned randomly to be reared at either 22 degrees C (thermoneutral, TN) or 34 degrees C (heat stress, HS) for 8 h/day (0900-1700) until the age of 42 days. Birds were supplemented with Cr as chromium chloride (CrCl3) or chromium picolinate (CrPic) at 0, 400 and 800 mug/kg. Each of the 2 x 2 x 3 factorially arranged experimental groups was replicated in 10 cages, each containing 3 birds. Data [performance, serum and liver malondialdehyde (MDA) and serum tumour necrosis factor-alpha (TNF- alpha), interleukin-6 (IL-6) and C-reactive protein (CRP)] were analyzed using 3-way ANOVA. The HS condition caused reductions in feed intake (-5.6%), weight gain (-11.9%), cold carcass weight (-13.5%) and carcass efficiency (-1.8%) and an increase in feed efficiency (6.8%) compared to the TN condition (P < 0.0001 for all). The HS condition was also associated with 1.9, 1.8, 1.5, 1.5 and 1.7-fold increases in serum MDA, liver MDA and serum TNF- alpha, IL-6 and CRP levels, respectively (P < 0.0001 for all). Increase in weight gain (P < 0.05), improvement in feed efficiency (P < 0.05) and decreases in liver MDA (P < 0.03), serum TNF- alpha (P < 0.05) and CRP (P < 0.006) were greater for quails supplemented with Cr as CrPic than for those supplemented with Cr as CrCl3. Performance variables increased linearly and lipid peroxidation and proinflammatory markers decreased linearly with increasing supplemental Cr level (P < 0.01 for all). There were no significant 2-way interactions of the treatments. In conclusion, heat stress caused a decrease in performance variables and increased lipid peroxidation and proinflammatory markers in quails. Increasing supplemental Cr improved performance variables and decreased lipid peroxidation and proinflammatory markers, regardless of its source and environmental temperature.
机译：进行该实验以评估补充铬源和水平对热应激日本鹌鹑（Coturnix coturnix japonica）性能，脂质过氧化和促炎标记的影响。总共随机分配了360只鸡（10天大），将它们在22摄氏度（体温，TN）或34摄氏度（热应激，HS）下饲养8小时/天（0900-1700），直到42天用0、400和800杯/千克的铬补充铬，例如氯化铬（CrCl3）或吡啶甲酸铬（CrPic）。将2 x 2 x 3分解布置的实验组中的每组复制到10个笼中，每个笼中包含3只鸟。使用三效方差分析分析数据[性能，血清和肝丙二醛（MDA）以及血清肿瘤坏死因子-α（TNF-α），白介素6（IL-6）和C反应蛋白（CRP）]。 HS条件导致饲料采食量减少（-5.6％），体重增加（-11.9％），cold体冷体重（-13.5％）和and体效率（-1.8％）以及饲料效率增加（6.8％） TN条件（全部P <0.0001）。 HS病还与血清MDA，肝MDA和血清TNF-α，IL-6和CRP水平分别升高1.9、1.8、1.5、1.5和1.7倍有关（所有P均<0.0001）。鹌鹑体重增加增加（P <0.05），饲料效率改善（P <0.05）和肝脏MDA减少（P <0.03），血清TNF-α（P <0.05）和CRP（P <0.006）更大补充Cr作为CrPic比补充Cr作为CrCl3的CrPic。随着补充Cr水平的增加，性能变量线性增加，脂质过氧化和促炎标志物线性减少（所有P均<0.01）。治疗之间没有显着的两向相互作用。总之，热应激导致鹌鹑的性能变量降低，脂质过氧化和促炎标记物增加。不论其来源和环境温度如何，增加补充Cr均可改善性能变量，并减少脂质过氧化和促炎性标志物。

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