Tatemoto Patricia, Bernardino Thiago, Morrone Beatrice, Queiroz Mariana Ramos, Zanella Adroaldo José
Department of Veterinary Medicine and Animal Health, Center for Comparative Studies in Sustainability, Health and Welfare, School of Veterinary Medicine and Animal Science, FMVZ, University of São Paulo, São Paulo, Brazil.
Front Vet Sci. 2020 Mar 12;7:79. doi: 10.3389/fvets.2020.00079. eCollection 2020.
Some effects of expressing stereotypic behavior have not yet been elucidated. During gestation, the environment has the potential to interfere with offspring development and to have prenatal or longer-term consequences. We tested the hypothesis that the occurrence of stereotypic behavior during gestation could affect the phenotype of the offspring. Twenty-eight pregnant sows were studied by comparing two groups differing in the amount of stereotypy shown. We analyzed emotionality in the offspring from sows showing high or low stereotypy frequency using the open field and novel object tests. In the open field test, piglets from sows with a high rate of stereotypies walked more in central sectors ( < 0.0001) and lateral sectors ( = 0.04) than piglets from sows with a low rate of stereotypies. In the novel object test, the offspring from low stereotypy sows vocalized more ( = 0.008). We demonstrate for the first time that the stereotypic behavior by the mother during gestation changes the phenotype of the offspring, in particular, their emotionality.
刻板行为的一些影响尚未得到阐明。在妊娠期，环境有可能干扰后代发育并产生产前或长期后果。我们检验了这样一个假设，即妊娠期刻板行为的发生可能会影响后代的表型。通过比较表现出不同刻板行为量的两组母猪，对28头怀孕母猪进行了研究。我们使用旷场试验和新物体试验分析了表现出高或低刻板行为频率的母猪所产后代的情绪。在旷场试验中，刻板行为发生率高的母猪所产仔猪在中央区域（<0.0001）和外侧区域（=0.04）的走动比刻板行为发生率低的母猪所产仔猪更多。在新物体试验中，刻板行为少的母猪所产后代发出的声音更多（=0.008）。我们首次证明，母亲在妊娠期的刻板行为会改变后代的表型，尤其是他们的情绪。
