Dvorák M
Vet Med (Praha). 1979 May;24(5):301-10.
Changes in concentrations of metabolites of the main nutrients in the blood plasma, caused by weaning and by different body weight gains, by starvation, exogenous adrenaline and ASTH administration were studied in 141 weaned piglets of the Large White breed at an age of 26 to 69 days. After weaning, the total protein level showed a faster decrease in the intensively growing piglets than in those with lower growth rates. This rapid decrease was induced by adrenaline. The post-weaning levels of glucose decreased irrespective of the growth rate of the piglets. Adrenaline caused hyperglycaemia and, after 48 hours of starvation, hypoglycaemia. Urea levels significantly increased after weaning. During starvation they remained unchanged, even under exposure to hormonal effects. Cholesterol concentration decreased after weaning, after ACTH and adrenaline administration also showed a decrease. The concentration of non-esterified fatty acids decreased after weaning, the decrease being more pronounced in the piglets with less intensive growth. The action of adrenaline, ACTH, together with an increased level of glucocorticoids, increased the concentration of these acids even in the state of starvation. It is assumed that early piglet weaning implies great metabolic changes which need not impair growth if their character is transient. The author evaluates the suitability of the starter used and parameters chosen for the determination of the metabolic profile of pigs.
在141头26至69日龄的大白猪断奶仔猪中，研究了断奶、不同体重增加、饥饿、外源性肾上腺素和促肾上腺皮质激素给药对血浆中主要营养物质代谢产物浓度的影响。断奶后，快速生长的仔猪总蛋白水平下降速度比生长速度较慢的仔猪更快。这种快速下降是由肾上腺素引起的。断奶后仔猪的血糖水平无论生长速度如何均下降。肾上腺素导致血糖过高，饥饿48小时后则导致血糖过低。断奶后尿素水平显著升高。饥饿期间，即使受到激素影响，尿素水平也保持不变。断奶后胆固醇浓度下降，注射促肾上腺皮质激素和肾上腺素后也出现下降。断奶后非酯化脂肪酸浓度下降，生长速度较慢的仔猪下降更为明显。即使在饥饿状态下，肾上腺素、促肾上腺皮质激素的作用以及糖皮质激素水平的升高也会增加这些酸的浓度。据推测，早期仔猪断奶意味着巨大的代谢变化，如果这些变化是短暂的，则不一定会影响生长。作者评估了所使用的起始料以及为测定猪的代谢概况而选择的参数的适用性。
