Kerner F, Klee W
Klinik für Rinderkrankheiten, Tierärztlichen Hochschule, Hannover.
Dtsch Tierarztl Wochenschr. 1992 Apr;99(4):127-33.
In 32 calves, creatinine and sodium concentrations were determined in blood and urine samples taken simultaneously four times during two periods of two days each (control period: milk or milk replacer; trial period: oral electrolyte solution). Creatinine urine/serum ratios and fractional elimination of sodium (FENa) were calculated. The influence of the type of liquid feed on these parameters was evaluated statistically. Calves fed milk replacer had higher urine sodium concentrations and FENa than calves fed whole milk. All parameters determined were influenced by intake of oral electrolyte solution: creatinine concentrations in serum and urine decreased, whereas sodium concentrations in serum and urine, as well as FENa, increased. It is concluded that sodium content of liquid feed significantly influences FENa.
在32头犊牛中，在两个各为期两天的时间段内，每隔一段时间同时采集血液和尿液样本，共采集四次，测定其中的肌酐和钠浓度（对照期：牛奶或代乳品；试验期：口服电解质溶液）。计算肌酐尿/血清比值和钠的分数排泄率（FENa）。对液体饲料类型对这些参数的影响进行了统计学评估。饲喂代乳品的犊牛比饲喂全脂牛奶的犊牛具有更高的尿钠浓度和FENa。所测定的所有参数均受口服电解质溶液摄入量的影响：血清和尿液中的肌酐浓度降低，而血清和尿液中的钠浓度以及FENa升高。得出的结论是，液体饲料中的钠含量显著影响FENa。
