CAJ | 학술논문

为了研究稀土壳糖胺对泌乳奶牛血液生理生化及脂类代谢指标的影响,选用60头,泌乳日龄(129±5)d,产奶量(33.2±5.1)kg/d的健康中国荷斯坦奶牛,根据年龄、体质量、胎次、泌乳量相同或相近的原则随机分成4组,每组15头,分别在基础饲粮中添加0、0.15%、0.75%和1.50%稀土壳糖胺(精料干物质基础).试验期70 d,其中预饲期10 d,正试期60 d.结果表明：0.15%组泌乳奶牛血液中红细胞平均体积、红细胞平均血红蛋白显著高于对照组和其他处理组(P<0.05)；与0.75%、1.5%组相比,0.15%组奶牛血液中白细胞计数、血小板计数及血小板压积显著提高(P<0.05)；饲粮添加不同比例稀土壳糖胺对泌乳奶牛血液中红细胞计数、红细胞压积、淋巴细胞绝对值、中性粒细胞绝对值及中间细胞数目均没有显著影响(P>0.05)；与对照组相比,0.75%组泌乳奶牛血中TC和 LDL-C含量显著增加(P<0.01)；随稀土壳糖胺添加剂量的升高,TG含量逐渐降低(P>0.05),但对HDL-C含量无显著影响(P>0.05).由此得出,饲粮中添加稀土壳糖胺能够改善奶牛血液基础代谢水平,促进脂类代谢,建议添加比例为0.15%.
위료연구희토각당알대비유내우혈액생리생화급지류대사지표적영향,선용60두,비유일령(129±5)d,산내량(33.2±5.1)kg/d적건강중국하사탄내우,근거년령、체질량、태차、비유량상동혹상근적원칙수궤분성4조,매조15두,분별재기출사량중첨가0、0.15%、0.75%화1.50%희토각당알(정료간물질기출).시험기70 d,기중예사기10 d,정시기60 d.결과표명：0.15%조비유내우혈액중홍세포평균체적、홍세포평균혈홍단백현저고우대조조화기타처리조(P<0.05)；여0.75%、1.5%조상비,0.15%조내우혈액중백세포계수、혈소판계수급혈소판압적현저제고(P<0.05)；사량첨가불동비례희토각당알대비유내우혈액중홍세포계수、홍세포압적、림파세포절대치、중성립세포절대치급중간세포수목균몰유현저영향(P>0.05)；여대조조상비,0.75%조비유내우혈중TC화 LDL-C함량현저증가(P<0.01)；수희토각당알첨가제량적승고,TG함량축점강저(P>0.05),단대HDL-C함량무현저영향(P>0.05).유차득출,사량중첨가희토각당알능구개선내우혈액기출대사수평,촉진지류대사,건의첨가비례위0.15%.
This study examined the effects of different proportion of rare earth-chitosan chelateon on blood biochemical parameters and lipid indicators in lactating Chinese Holstein dairy cows.Sixty lactating cows (lactation days (129±5)d;average milk yield (33.2±5.1)kg/d)were divided into 4 proup based on lactation days,body weight,and similar parity and milk yield.Dietary treatments were 4 adding levels of RECC (rare earth-chitosan chelate):0 (control),0.15%,0.75%,and 1.5%,respectively.The results showed as follows:the mean corpuscular hemoglobin and mean corpuscular volume were significantly (P<0.05)affected of the entire hematological indices measured in the 0.15% RECC group compared with con-trol and other groups.Feeding 0.75% or 1.5% RECC resulted in lower white blood cell count and hemo-globin compared with 0.15% RECC group (P<0.01).0.15% RECC-added in animals thrombocytocrit and platelet were higher than control and 0.75% group (P<0.03).No significant difference in the serum hem-atocrit,intermediate cell,amylase,alkaline phosphatase and blood urea nitrogen were detected among groups (P>0.23).Compared with control group,TG and LDL-C were significantly increased in 0.75%RECC-added group.TG content decreased with the increasing of RECC (P>0.05 ),while the different counts did not follow a particular trend (P>0.05),and there was no significant difference in the HDL-C(P>0.05)among treatments.Therefore,the basal metabolism of blood and lipid metabolism could improve with RECC-added in this study,and further confirmed the suggesting level of RECC adding in dairy cow di-et could be 0.15%.