We investigated the effect of chromium (Cr) supplementation on the growth performance, energy metabolites, and hormonal variation in winter-exposed buffalo calves. Twenty-four female buffalo calves were randomly allotted to four dietary treatments (n = 6) for a period of 120 days. Feeding regimen was the same in all the groups, except the animals in the four respective groups were additionally supplemented with 0.0, 0.5, 1.0, and 1.5 mg of Cr/kg DM in the form of CrCl3.6H2O. Calves were monitored daily for physiological variables and dry matter intake (DMI). Blood samples were collected at fortnightly intervals from each buffalo calves to measure concentrations of hormones (insulin, cortisol, and growth hormone), energy metabolites (glucose and non-esterified fatty acids), and plasma mineral levels. After 120 days of feeding trial, buffalo calves fed with Cr had lower (P < 0.05) circulating plasma concentrations of glucose, insulin, and cortisol hormones, whereas plasma thyroid hormone and non-esterified fatty acids concentrations were found similar (P > 0.05) among all the treatments. The results suggested that dietary Cr supplementation influenced plasma Cr levels without affecting the plasma concentrations of other trace minerals. However, physiological variables, nutrient intake, and growth performance of buffalo calves did not differ among all treatments (P > 005). In summary, the current study showed that supplementation of Cr at the level of 1.0 and 1.5 mg of Cr/kg DMI was more effective in improving glucose utilization by increasing potency of insulin hormone and reducing concentration of cortisol hormone. Results also suggested that supplemental Cr also improves blood plasma Cr levels.

译文

:我们研究了添加铬(Cr)对水牛犊冬季生长性能,能量代谢物和激素变化的影响。将24只雌性水牛犊随机分配给四种饮食疗法(n = 6),为期120天。除了四组动物分别补充了0.0、0.5、1.0和1.5 mg Cr / kg DM的CrCl3.6H2O形式外,所有组的喂养方案均相同。每天监测犊牛的生理变量和干物质摄入量(DMI)。每隔两周从每头水牛犊收集血样,以测量激素(胰岛素,皮质醇和生长激素),能量代谢物(葡萄糖和非酯化脂肪酸)和血浆矿物质的浓度。饲喂试验120天后,饲喂Cr的水牛犊的循环血浆葡萄糖,胰岛素和皮质醇激素浓度较低(P <0.05),而血浆甲状腺激素和未酯化脂肪酸的浓度相似(P> 0.05)在所有的治疗方法中。结果表明,膳食铬的添加影响血浆铬水平,而不会影响其他微量矿物质的血浆浓度。然而,水牛犊的生理变量,养分摄入和生长性能在所有处理之间均无差异(P> 005)。总之,当前的研究表明,以1.0和1.5 mg Cr / kg DMI的水平添加Cr通过增加胰岛素激素的效力和降低皮质醇激素的浓度,更有效地提高了葡萄糖的利用率。结果还表明,补充铬还可以改善血浆中的铬水平。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录