Steger H, Bergfeld J, Hühn U, Püschel F
Arch Exp Veterinarmed. 1977;31(6):881-6.
Three independent experiments were conducted with cyclic gilts kept under different conditions (2 x 12 on platforms and 100 from production unit), i.e. hormonally unaffected or under the usual conditions of synchronised oestrus (100 mg Suisynchron per animal and die over 20 days followed by 1,000 I.U. PMS and again followed, three days later, by 250 I.U. HCG). Blood samples were repeatedly drawn from the jugular vein and brachiocephalic vein during phases of treatment and oestrus. Acid and alkaline phosphatases were determined immediately in the plasms, and the results were calculated by variance analysis. Synchronisation, using Suisynchron, proved conducive to lowering with significance (P less than 0.01) the levels of acid and alkaline phosphatases. All changes in phosphatase values were not in full conformity within the experiments during the other phases of treatment. Phosphatase levels were not affected by discontinuation of Suisynchron nor by administration of Gn hormone. The levels of acid and alkaline phosphatases in biotechnically treated animals appeared to be lower than those in animals with spontaneous oestrus at the time of full oestrus. While the findings were of period-specific significance (P less than 0.01), the results obtained from the individual animal failed to provide specific information, since gaps were too wide between animals and between animals, on the one hand, and periods, on the other (P less than 0.01).
对处于不同条件下的（24头在平台上的经产母猪和100头来自生产单元的母猪）经产母猪进行了三项独立实验，即激素未受影响的母猪或处于同步发情常规条件下的母猪（每头动物100毫克苏同步，持续20天，随后注射1000国际单位孕马血清促性腺激素，三天后再注射250国际单位人绒毛膜促性腺激素）。在治疗阶段和发情期，反复从颈静脉和头臂静脉采集血样。立即测定血浆中的酸性和碱性磷酸酶，并通过方差分析计算结果。使用苏同步进行同步化处理被证明有利于显著降低（P小于0.01）酸性和碱性磷酸酶的水平。在治疗的其他阶段，实验过程中磷酸酶值的所有变化并不完全一致。磷酸酶水平不受苏同步停用或Gn激素给药的影响。在完全发情时，经生物技术处理的动物体内酸性和碱性磷酸酶的水平似乎低于自然发情动物体内的水平。虽然这些发现具有特定时期的显著性（P小于0.01），但从个体动物获得的结果未能提供具体信息，因为一方面动物与动物之间、另一方面动物与时期之间的差距太大（P小于0.01）。
