求翻译：试验结果显示，主动免疫试验组鹅群和空白对照组相比，免疫高剂量重组PRL的试验组鹅群就巢率始终较低，但产蛋量却也减少了；免疫试验组的产蛋性能和空白对照组相比并未达到改善的目的，但每次主动免疫前几天产蛋量和空白对照组比差异不大，而在二次主动免疫后十几天产蛋量迅速下降，且中剂量重组PRL试验组和另外两组相比，产蛋量较高些。由此可推测，主动免疫重组PRL可能会推迟鹅就巢的时间，但并不能明显改善鹅的产蛋性能。是什么意思？

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According to the results of the trial, the active immunization Trials Group geese and blank control group, compared the high-dose immunization PRL group geese on their nests, and rates were consistently lower egg production, but also reduces the pilot group; immune egg output performance, and blank

The test result showed that, the active immunization experiment group goose group and the blank control group compares, the immunity high dose reorganizes PRL the experimental group goose group to be low throughout on the nest rate, but produced the egg quantity also to reduce actually; The immunisi

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