共查询到19条相似文献，搜索用时 203 毫秒
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不同发育期黄牛有氧和无氧代谢相关指标的测定 总被引：1，自引：0，他引：1
用常规方法对平原地区不同发育期黄牛红细胞压积(Hct)、血红蛋白(Hb)、肌红蛋白(Mb)、乳酸脱氢酶(LDH)指标进行测定。结果:随着黄牛年龄的增长,血液中Hb及心肌和骨骼肌中Mb含量逐渐增加,但差异不显著(P>0.05),心肌Mb含量显著高于骨骼肌,差异显著(P<0.05);血液中Hct随年龄的增长逐渐降低,差异不显著(P>0.05);血清、骨骼肌、心肌组织及线粒体LDH活性在黄牛年龄组间差异均不显著(P>0.05);血清中LDH活性高于组织和线粒体,差异显著(P<0.05)。试验表明黄牛在生长发育过程中逐渐增加血液中Hb和心肌、骨骼肌中Mb含量来增强机体的有氧代谢机制,而无氧代谢机制保持在相对稳定的水平。 相似文献
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不同海拔地区牦牛心肌、骨骼肌线粒体氧自由基代谢的研究 总被引：2，自引：1，他引：1
对青海省玛多和刚察两县牦牛心肌、骨骼肌组织中肌红蛋白(Mb),心肌、骨骼肌中线粒体总抗氧化能力(T-AOC),超氧化物歧化酶(SOD),谷胱甘肽过氧化物酶(GSH-PX),乳酸脱氢酶(LDH)活性及丙二醛(MDA)含量进行了测定。结果:玛多牦牛心肌、骨骼肌中Mb含量均高于刚察牦牛,但差异不显著(P0.05);玛多牦牛心肌、骨骼肌线粒体中T-AOC,SOD,GSH-PX酶活性均显著高于刚察牦牛(P0.05),而LDH活性显著低于刚察牦牛(P0.05),玛多牦牛骨骼肌和心肌线粒体MDA含量低于刚察牦牛(P0.05)。结论:在高原低氧环境下,牦牛心肌、骨骼肌线粒体抗氧化能力随海拔高度的升高而增强,表明牦牛对高原低氧环境具有显著的适应性。 相似文献
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CHE Fa-mei Veterinary Station of Haiyan Country Qinghai Haiyan SHI Fu-sheng LI Li College of Agriculture Animal Husbandry Qinghai University Xining 《家畜生态》2007,(5)
用常规方法分别对青海省玛多、刚察地区牦牛,甘肃地区黄牛心肌、骨骼肌中Mb和血液中Hb含量进行测定,结果:心肌及骨骼肌中Mb依次为:玛多牦牛(1275.96±220.96) nmol/g,(828.33±194.25)nmol/g;刚察牦牛(1195.58±156.63)nmol/g,(759.09±184.46) nmol/g;甘肃黄牛(1073.81±147.19)nmol/g,(545.82±98.54)nmol/g;Hb,玛多牦牛(163.4±16.2)g/l;甘肃黄牛(117.8±16.9)g/l;Hct,玛多牦牛(47.20±2.85)%,甘肃黄牛(35.69±4.19)%。结果表明在高原低氧环境中心肌、骨骼肌中Mb和血液中Hb含量与牦牛适应低氧环境密切相关。 相似文献
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不同海拔地区牦牛血红蛋白、肌红蛋白含量的测定 总被引：1，自引：0，他引：1
用常规方法分别对青海省玛多、刚察地区牦牛,甘肃地区黄牛心肌、骨骼肌中Mb和血液中Hb含量进行测定,结果:心肌及骨骼肌中Mb依次为:玛多牦牛(1275.96±220.96)nmol/g,(828.33±194.25)nmol/g;刚察牦牛(1195.58±156.63)nmol/g,(759.09±184.46)nmol/g;甘肃黄牛(1073.81±147.19)nmol/g,(545.82±98.54)nmol/g;Hb,玛多牦牛(163.4±16.2)g/l;甘肃黄牛(117.8±16.9)g/l;Hct,玛多牦牛(47.20±2.85)%,甘肃黄牛(35.69±4.19)%.结果表明在高原低氧环境中心肌、骨骼肌中Mb和血液中Hb含量与牦牛适应低氧环境密切相关. 相似文献
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为分析不同海拔牦牛骨骼肌代谢关键酶的含量及其酶活性，本试验选取3个海拔高度(4 200、3 200和1 900 m)的牦牛作为研究对象，其中低海拔牦牛作为对照，运用电镜技术观测牦牛骨骼肌的线粒体相关指标，运用ELISA方法测定骨骼肌代谢关键酶乳酸脱氢酶(LDH)和琥珀酸脱氢酶(SDH)的含量、酶活性和LDH同工酶类型。结果显示，随海拔升高，肌红蛋白(Mb)和有氧代谢关键酶SDH含量和酶活性逐渐增强，中海拔和高海拔牦牛的Mb含量和SDH酶活性均高于低海拔牦牛且差异显著(P<0.05),高海拔牦牛SDH含量大于低海拔牦牛且差异显著(P<0.05);随海拔升高，无氧代谢关键酶LDH含量和酶活性逐渐降低，中海拔和高海拔牦牛LDH含量和酶活性均低于低海拔牦牛且差异显著(P<0.05);3个不同海拔牦牛5种LDH同工酶中LDH5占比最高，随着海拔升高，LDH1、LDH2、LDH4和LDH5含量逐渐下降，中海拔和高海拔牦牛LDH1和LDH2含量均低于低海拔牦牛且差异显著(P<0.05),高海拔牦牛LDH4和LDH5含量均低于低海拔牦牛且差异显著(P<0.05)。结果表明... 相似文献
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采用酶联免疫分析法(ELISA)和比色法对青海省泽库、海晏县牦牛心肌和骨骼肌线粒体标志酶琥珀酸脱氢酶(SDH)、细胞色素氧化酶(CCO)和三磷酸腺苷(ATP)活性进行测定,并与甘肃黄牛进行对比。结果显示:泽库牦牛心肌、骨骼肌线粒体SDH、ATP活性显著高于海晏牦牛和甘肃黄牛(P<0.05),而海晏牦牛和甘肃黄牛差异不显著(P>0.05);泽库、海晏牦牛和甘肃黄牛心肌、骨骼肌线粒体CCO活性差异均不显著(P>0.05)。表明随着海拔的升高,牦牛心肌、骨骼肌线粒体标志酶SDH、ATP表达量增加,肌组织有氧代谢能力增强。 相似文献
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Y.Q. Lin G.S. Wang J. Feng J.Q. Huang Y.O. Xu S.Y. Jin Y.P. Li Z.R. Jiang Y.C. Zheng 《Livestock Science》2011,135(1):93-97
The objective of the present study was to reveal the differences between yak (Bos grunniens) and cattle in energy metabolic characteristics and gene expressions in skeletal muscles. Activities of lactate dehydrogenase (LDH), malate dehydrogenase (MDH) and β-hydroxyacyl-CoA dehydrogenase (HOAD), which are involved in metabolism of carbohydrate and fatty acid respectively, were measured in longissimus dorsi and biceps femoris. Yak contained higher total LDH activity and higher proportion of LDH5 in longissimus dorsi than cattle (P < 0.05), indicating its more anaerobic potential characteristics in carbohydrate metabolism. However, yak contained higher activities of MDH and HOAD (P < 0.05) in biceps femoris than cattle, exhibiting high oxidative capacity under hypoxic environment. Semi-quantitative RT-PCR analysis of mRNA abundance showed that yak and cattle contained a similar level of adipocyte fatty acid-binding protein (A-FABP) in both longissimus dorsi and biceps femoris, while myosin heavy chain I (MyHC I) in longissimus dorsi and biceps femoris, and peroxisome proliferator-activated receptor coactivator 1α (PGC-1α) level in biceps femoris were significant lower in yak compared with cattle (P < 0.01 and P < 0.05 respectively), indicating the anaerobic characteristic of yak skeletal muscles. In conclusion, our experiment showed that yak skeletal muscles exhibit different energy metabolic property and gene expressions compared to cattle. 相似文献
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牦牛、犏牛及黄牛肉脂肪酸和风味物质的分析 总被引：1，自引：0，他引：1
随机选取青海省果洛州同一放牧群体的1.5岁牦牛（♂）和犏牛（♂）各3头,与青海省湟中县1.5岁的3头黄牛（♂）做比较研究,利用气质联用仪对牦牛、犏牛和黄牛肉中脂肪酸组成及含量进行分析,利用高效液相色谱法对其肉中的肌苷、肌苷酸和硫胺素进行测定,采用高氯酸滴定法测定其肉中谷氨酸钠的含量。结果表明：①牦牛、犏牛和黄牛肉中饱和脂肪酸和单不饱和脂肪酸的含量无显著差异（P〉0.05）;多不饱和脂肪酸在犏牛肉中含量最高,明显高于牦牛和黄牛肉（P〉0.05）。②牦牛肉肌苷的含量明显高于同龄黄牛（P〈0.05）;三种牛肉中肌苷酸的含量无显著差异（P〉0.05）;犏牛肉硫胺素的含量最高,明显高于同龄黄牛（P〈0.05）;犏牛与黄牛肉谷氨酸钠的含量明显高于同龄牦牛（P〉0.05）。 相似文献
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Arai T Inoue A Takeguchi A Mizutani H Shimoo M Sako T Yoshimura I Kimura N 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(11):1241-1243
Concentrations of plasma glucose, immunoreactive insulin (IRI) and free fatty acid (FFA) and activities of enzymes related to energy metabolism and lactate dehydrogenase (LDH) isoenzyme pattern in plasma and leukocytes were investigated in lactating Holstein cows (dairy cattle) and fattening Japanese Black Wagyu x Holstein steers (beef cattle). IRI concentrations and LDH and malate dehydrogenase (MDH) activities in the plasma of beef cattle were significantly higher than those in dairy cattle. The cytosolic ratio of MDH/LDH activity in the leukocytes of beef cattle was significantly higher than that of dairy cattle. These findings might be associated with the different energy metabolism between dairy and beef cattle. 相似文献
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Washizu T Nakamura M Izawa N Suzuki E Tsuruno S Washizu M Nakajo S Arai T 《Veterinary research communications》2002,26(5):341-346
The activities of malate dehydrogenase (MDH) and lactate dehydrogenase (LDH) and the pattern of the isoenzymes of LDH were determined in the peripheral blood leukocytes of dogs, rabbits and cats. Rabbits had significantly higher plasma glucose concentrations than dogs or cats. Feline leukocytes showed higher LDH and lower MDH activities than canine or rabbit leukocytes. The M/L ratio, defined as the MDH activity divided by the LDH activity in cytosolic fractions, was considered to be a good indicator with which to evaluate the metabolic state in animal tissues. The M/L ratio was highest in canine and lowest in feline leukocytes. LDH-2 and LDH-3 isoenzymes were dominant in canine leukocytes. LDH-1 and LDH-2 were dominant in rabbit leukocytes, whereas LDH-5 was dominant in feline leukocytes. It was evident that there were significant differences in energy metabolism between the leukocytes of dogs, rabbits and cats. 相似文献
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为了探讨1日龄大通牦牛骨骼肌组织学特点及对低氧的适应,以平原黄牛为对照,利用光镜和计算机图像分析系统测定骨骼肌肌纤维直径、表面积密度;通过透射电镜比较骨骼肌线粒体的面数密度、面积密度、体积密度、平均体积等结构参数。结果显示,1日龄大通牦牛骨骼肌肌纤维直径显著细于1日龄平原黄牛,表面积密度明显大于平原黄牛,差异极显著(P<0.01);1日龄大通牦牛骨骼肌细胞中线粒体平均体积小于1日龄平原黄牛,并具有极显著差异(P<0.01);而1日龄大通牦牛骨骼肌细胞中线粒体体积密度、面积密度、面数密度均大于1日龄平原黄牛,且差异极显著(P<0.01)。以上结果表明,大通牦牛通过增加骨骼肌线粒体面数密度、面积密度、体积密度,降低线粒体平均体积来提高其在低氧环境中对氧的利用,并且在长期进化中形成了肌纤维直径小,表面积密度大的组织学特点。 相似文献
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Continuous high intensity training may induce alterations to enzyme activities related to glucose and lipid metabolism in horses. In our study, five Thoroughbred race horses (3 male and 2 female, avg age=5 yrs old) were compared against five riding horses (1 male, 1 female, 3 gelding, avg age=13 yrs old) in terms of energy metabolism, by examining plasma malate (MDH) and lactate (LDH) dehydrogenase activities and M/L ratio. MDH is involved in NADH and ATP generation, whereas LDH can convert NADH back into NAD(+) for ATP generation. An increase in plasma M/L ratio can reflect heightened energy metabolism in the liver and skeletal muscle of horses adapted to continuous intensive exercise. Moreover, plasma lipid metabolism analytes (adiponectin, NEFA, total cholesterol (T-Cho), and triglycerides (TG)) can reflect changes to lipolysis rate, which can also indicate a change in energy metabolism. Overall, race horses demonstrated increased MDH and LDH activity in plasma (4x and 2x greater, respectively), in addition to a plasma M/L ratio twice as high as that of riding horses (2.0 vs 1.0). In addition, race horses also demonstrated significantly higher levels of plasma NEFA (50% greater), TG (2x greater), and T-Cho (20% greater) as compared to riding horses. Therefore, race horse muscles may have adapted to prolonged high intensity endurance exercise by gaining a higher oxidative capacity and an increased capacity for fat utilization as an energy source, resulting in heightened energy metabolism and increased rate of lipid mobilization. 相似文献
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Khalid M. Fararh Adel K. Ibrahim Yakot A. Elsonosy 《Research in veterinary science》2010,88(3):400-404
The aim of this study was to examine the effect of glycemic control using thymoquinone (TQ) on energy metabolism related enzymes in leukocytes of streptozotocin (STZ)-induced diabetic rats. The treatment of both TQ and insulin commenced 4 weeks after induction of diabetes. Plasma glucose, cholesterol and triglycerides levels were significantly reduced after TQ treatment, whereas immunoreactive insulin (IRI) showed significant increase. The activities of malate dehydrogenase (MDH) in cytosolic and mitochondrial fractions of peripheral blood leukocytes were significantly higher in rats treated with TQ and insulin as compared to that in diabetic controls. On the other hand the activities of lactic dehydrogenase (LDH) showed no significant changes between groups. ML ratio (cytosolic MDH/LDH specific activity ratio) was restored to those in the control rats. The results of this study demonstrate that TQ significantly increased insulin level and the activities of cytosolic and mitochondrial MDH in leukocytes of STZ-diabetic rats. 相似文献
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Kimura N Yoshimura I Sako T Inoue A Tadami K Arai T 《Veterinary research communications》2005,29(1):19-26
Glucose, triglyceride, cholesterol and immunoreactive insulin (IRI) concentrations, some enzyme activities in plasma, and activities of enzymes related to energy metabolism in peripheral leukocytes were measured in fattening Japanese Black Wagyu x Holstein steers fed on different diets at 8, 12, 16, 20 and 24 months of age. The plasma IRI concentrations at 20 and 24 months of age were significantly higher than those at 8 months of age. Activities of hexokinase (HK), glucose-6-phosphate dehydrogenase (G6PD), aspartate aminotransferase (AST), and malate dehydrogenase (MDH) in cytosolic fractions, and glutamate dehydrogenase (GLDH), MDH and AST in mitochondrial fractions in peripheral leukocytes of steers at 24 months of age were significantly higher than those at 8 months. Increasing plasma insulin concentration was considered to induce acceleration of glucose utilization in leukocytes of fattening steers. The cytosolic ratio of MDH/lactate dehydrogenase (LDH) activity in leukocytes increased significantly in the fattening process and was considered to be a useful indicator for evaluating changes in energy metabolism in steers. 相似文献
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S Dhandayuthapani M P Balasubramanian K Nellaiappan K Ramalingam 《Veterinary parasitology》1983,12(1):65-69
Isozyme pattern of lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) of Gastrothylax crumenifer from sheep, goat and buffalo was studied using polyacrylamide gel electrophoresis. LDH of G. crumenifer from buffalo, goat and sheep consists of four fractions, three fractions and two fractions, respectively. The parasite from buffalo shows two fractions of MDH, whereas those from goats or sheep show only a single fraction. The significance of these results is discussed. 相似文献