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Mastiff breed mortality: A study of owner experience, dog age and longevity

机译：獒犬种死亡率：对所有者体验，狗年龄和长寿的研究

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Despite being ranked 33 in Americas most popular breeds (American Kennel Club, 2020), there is a lack of research addressing longevity and death related health problems of Mastiff dog breeds and specifically commonly kept Bull Mastiffs and English Mastiffs. Likely a result of small founder populations and minimal breeding geographical locations, limited genetic variation is found making it important to determine key health concerns which may reduce longevity. The purpose of this study was to report findings from an online global survey of owners of deceased Mastiffs detailing breed, age at death, and if known, cause of death. Owner information was also collected including location by continent and country and the owners breeding or hobbyist experience. A closed-question survey was used via an online network of global Mastiff clubs and associations totalling a useable sample of 1036 dogs across a range of breeds. Notably, it is reported that age and cause of death varied dependant on breed. Results indicate that the median age of death for all dogs was 8 years with mean age of death in Europe as 7.72 years and 8.17 years in North America. The most common cause of death identified for all dogs was cancer (47%), old age (16%), cardiac problems (8%) and gastric problems including GDV and bloat (7%). The mean age of death for cancer dogs was 7.85 years with 23 types of cancer stated with Osteosarcoma being the most commonly recorded and specifically for neutered animals. As the survey was aimed at hobbyist and registered breeders, study findings contribute to knowledge of Mastiff mortality with the aim of promoting welfare of the breed.
机译：尽管在最受欢迎的品种（美国肯尼俱乐部，2020年）中排名33，但缺乏研究统治獒犬品种的寿命和死亡相关的健康问题，特别是普通普通的公牛獒和英语獒。可能是小型创始人群体和最小育种地理位置的结果，有限的遗传变异，使得确定关键健康问题可能降低寿命的关注。本研究的目的是报告从在线全球所有者的在线全球调查的调查，细节在死亡的年龄，年龄的年龄，如果已知，死因。还收集了所有者信息，包括由大陆和国家和业主繁殖或爱好者体验的地点。通过全球獒俱乐部和协会的在线网络使用了一个封闭式问题的调查，这些协会在各种品种中提供了1036只狗的可用样品。值得注意的是，据报道，死亡的年龄和原因依赖于品种。结果表明，所有狗的死亡年龄为8年，欧洲的平均死亡年龄为7.72岁，北美8.17年。为所有狗确定的最常见的死因是癌症（47％），晚年（16％），心脏病问题（8％）和胃问题，包括GDV和膨胀（7％）。癌症犬的平均死亡年龄为7.85年，患有23种癌症，骨肉瘤是最常见的，专门用于绝育的动物。随着调查的目标是杂志和注册的育种者，研究调查结果有助于了解獒犬死亡率，以促进品种的福利。

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