Establishing New Isosexual Pairs in Adult Male Guinea Pigs (Cavia porcellus) to Facilitate Social Housing.

Jen X Xu, Ashton Coker, Zadie Dulaney, Amelia Furbish, Frank Z Xu, Kristi L Helke, Patrick M Woster, Paul J Nietert, Alicia M Braxton
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Abstract

Guinea pigs (Cavia porcellus) are a commonly used species in biomedical research. As social creatures, compatible guinea pigs should be housed together unless scientific objectives or veterinary care require otherwise. Extensive literature suggests that adult male guinea pigs are highly aggressive in the presence of females, but data are lacking regarding the compatibility of cohoused adult males in the absence of females. Most studies that use adult males do not report housing densities. We used serial wound scoring and observations of behavior to determine whether unfamiliar adult male guinea pigs will develop stable, prosocial isosexual pairs. Wound scoring was performed before and 24 h after pairing. Serial behavioral observations assessed affiliative and agonistic behaviors at 0.5, 2, 24, and 48 h after pairing. Wound scoring and behavioral observations continued weekly for 1 mo and monthly thereafter. Wound scores were significantly higher at 24 h after pairing as compared with baseline and all other time points. Wounding was rare after week 2, indicating reduced aggression. Furthermore, affiliative behaviors significantly increased over time while agonistic behaviors were rare. Together, these data suggest that unfamiliar adult male guinea pigs establish stable prosocial pairs after an acclimation period. As was done in the present study, providing ample space, separate shelters for each animal, and the absence of female guinea pigs will likely facilitate successful pairing. We recommend consideration of a social housing program for adult male guinea pigs to provide companionship and enrich their housing environment.

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在成年雄性几内亚猪(Cavia porcellus)中建立新的异性配对,以促进社会住房。
豚鼠(Cavia porcellus)是生物医学研究中常用的物种。作为社会性动物,除非科研目的或兽医护理另有要求,否则相容的豚鼠应饲养在一起。大量文献表明,成年雄性豚鼠在有雌性豚鼠在场的情况下具有很强的攻击性,但在没有雌性豚鼠在场的情况下,同舍成年雄性豚鼠的相容性却缺乏相关数据。大多数使用成年雄性豚鼠的研究都没有报告饲养密度。我们利用连续的伤口评分和行为观察来确定陌生的成年雄性豚鼠是否会发展出稳定、亲社会的异性配对。在配对前和配对后 24 小时进行伤口评分。在配对后的 0.5、2、24 和 48 小时进行连续行为观察,评估隶属行为和激动行为。伤口评分和行为观察每周进行一次,持续 1 个月,之后每月进行一次。与基线和所有其他时间点相比,配对后 24 小时的伤口评分明显较高。第 2 周后很少出现伤口,表明攻击性降低。此外,随着时间的推移,附属行为明显增加,而攻击行为则很少出现。这些数据表明,陌生的成年雄性豚鼠在经过适应期后会建立稳定的亲社会配对。与本研究一样,为每只豚鼠提供充足的空间、单独的庇护所以及没有雌性豚鼠的情况下,很可能会促进配对的成功。我们建议考虑为成年雄性豚鼠实施社会化饲养计划,为它们提供陪伴,丰富它们的饲养环境。
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