摘要
The objectives of the trial were to investigate the effects of supplementing rare earth element (REE) cerium (Ce) on rumen fermentation, nutrient digestibility, methane (CH4) production, nitrogen (N) balance and plasma biochemical parameters in beef cattle. Four Simmental male cattle, aged at 14 months, with initial liveweight of 355 ± 8 kg and fitted with permanent rumen cannulas, were used as experimental animals. The cattle were fed with a total mixed ration (TMR) composed of concentrate mixture and corn silage. Four levels of cerium chloride (CeCl3·7H2O, purity 99.9%), that is 0, 80, 160 and 240 mg CeCl3/kg DM, were added to basal ration in a 4 × 4 Latin square design. Each experimental period lasted 15 days, of which the first 12 days were for pre-treatment and the last 3 days were for sampling. The results showed that supplementing CeCl3 at 160 or 240 mg/kg DM increased neutral detergent fibre (NDF) digestibility (p < 0.05) and tended to increased acid detergent fibre (ADF) digestibility (p = 0.083). Supplementing CeCl3 at 80, 160 or 240 mg/kg DM decreased the molar ratio of rumen acetate to propionate linearly (p < 0.05). Supplementing CeCl3 at 160 or 240 mg/kg DM decreased total N excretion, urinary N excretion and increased N retention (p < 0.05), increased excretion of total urinary purine derivatives (PD) (p < 0.05) and decreased CH4/kg DMI (p < 0.05). In conclusion, supplementing CeCl3 at 160 or 240 mg/kg DM in the ration of beef cattle increased the digestibility of NDF, decreased the molar ratio of rumen acetate to propionate, increased N retention and microbial N flow and decreased CH4/kg DMI. .overlined { text-decoration: overline; } .struck { text-decoration:line-through; } .underlined { text-decoration:underline; } .doubleUnderlined { text-decoration:underline;border-bottom:1px solid #000; } View Full Article (HTML) Enhanced Article (HTML) Get PDF (259K)Get PDF (259K) More content like thisFind more content: like this articleFind more content written by: S. X. Lin C. Wei G. Y. Zhao T. T. Zhang K. Yang All Authors
摘要译文
该试验的目的是研究在补充瘤胃发酵，营养物质的消化率，甲烷（CH 4）生产的稀土元素（REE）铈（Ce）的影响，氮（N）的平衡和牛肉cattleFour西门塔尔牛男牛血浆生化指标，年龄为14个月，355卤8公斤初始活重，并配有永久性瘤胃瘘管，作为实验animalsThe牛用氯化铈浓缩物混合物和玉米silageFour水平构成的全混合日粮（TMR）（CECL 3路7H 2 O，纯度995）供给，即0，80，160和240毫克CECL 3 /千克干物质，被添加到基础日粮中4脳4拉丁方designEach实验周期历时15天，其中的第12天分别进行预处理，最后3天取样结果表明，在160或240毫克/公斤的DM补充CECL 3增加中性洗涤剂纤维（NDF）的消化率（P 005），并倾向于在80到增加酸性洗涤纤维（ADF）的消化率（p值\x3d 0）补充CECL 3，160或240毫克/公斤的DM降低瘤胃乙酸的摩尔比在160或240毫克/公斤的DM降低全氮排泄线性丙酸（对0Supplementing CECL 3，尿氮的排泄，增加氮沉积（P 0，增加总尿嘌呤衍生物排泄（PD）（P 0，降低CH 4 / kg的DMI（P 0In结论，在160或240毫克补充CECL 3 /肉牛的配给kg干物质增加NDF的消化率，降低瘤胃乙酸的摩尔比为丙酸，增加氮沉积和微生物N流量，降低CH 4 /公斤DMI竜verlined {文字修饰：上划线; }竤卡车{文字装饰：线通过; }竨nderlined {文本装饰：下划线; }doubleUnderlined {文字装饰：下划线;下边框：1px的固体＃000;}查看全文（HTML）增强文章（HTML）获取PDF（259K）获取PDF（259K）更多内容，如thisFind更多的内容：像这样的articleFind更多的内容写的：SXLin CWei GY赵TTZhang KYang所有的著者
S. X. Lin, C. Wei, G. Y. Zhao[*]; T. T. Zhang and K. Yang;. Effects of supplementing rare earth element cerium on rumen fermentation, nutrient digestibility, nitrogen balance and plasma biochemical parameters in beef cattle[J]. Journal of Animal Physiology and Animal Nutrition, 2015,99(6): 1047-1055