Stephens D B, Close W H
Cornell Vet. 1984 Jul;74(3):187-97.
Four series of experiments involving 44 animals were carried out to investigate the influence of transportation, proximity of sexually mature adults and other stimuli on the onset of puberty in the gilt. Transportation per se, either real or simulated, did not induce early puberty in the gilt. In contrast, the most effective stimulus was provided by accommodating the gilts in pens adjacent to mature breeding stock. Gilts housed in a sow yard exhibited oestrus when aged between 153 and 184 days, i.e. 4-6 weeks after the beginning of the experiment. This compares with 189 to 227 days, i.e. 9-12 weeks after the start of the experiment for those gilts not housed adjacent to adult stock.
进行了涉及44只动物的四组实验，以研究运输、性成熟成年动物的接近程度及其他刺激因素对后备母猪青春期开始的影响。实际运输或模拟运输本身均未促使后备母猪提前进入青春期。相比之下，最有效的刺激是将后备母猪安置在与成熟种畜相邻的围栏中。饲养在母猪场的后备母猪在153至184日龄时发情，即实验开始后4至6周。相比之下，那些未与成年种畜相邻饲养的后备母猪在189至227日龄时发情，即实验开始后9至12周。
