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Prevalence of scrotum bipartition in sheep in the Paraiba backwoods, Brazil

机译：巴西帕拉伊巴偏远地区绵羊的阴囊分裂发生率

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Goats and sheep have morphological characteristics for adaptation to desert and semiarid regions. The appearance of scrotum division known as scrotum bipartition has already been reported in goats. This anatomy increases the surface of each testicle exposed to environmental temperature, favoring heat dissipation and improving reproductive efficiency. Considering that there are already studies on the goat species demonstrating the presence of this characteristic as an influence on reproductive parameters, the prevalence of scrotum bipartition was estimated in the sheep herds reared in the municipality of Patos, Paraiba backwoods, Brazil. A total of 331 rams were examined from farms in four municipalities in the micro-region of Patos, Paraiba, Brazil, and the same study was also carried out at the municipal slaughterhouse in this city, where 456 animals were examined. According to the analysis, 66.67% of the farms visited presented one or more sheep with scrotum bipartition, with a prevalence of 11.48% on the farms and 14.47% at the slaughterhouse. The degree of bipartition was 9.59 ± 1.035% of the total scrotum length for the animals in the field and 12.89 ± 0.749% for those from the slaughterhouse, characterizing bipartition of less than 50% of the scrotum length. The variables intensive rearing (OR = 16.6) and the Dorper breed (OR = 6.91) were identified as factors associated to the presence of scrotum bipartition. It was concluded that scrotum bipartition is a characteristic present in sheep reared in the municipality of Patos in the semiarid region of Paraiba state, northeastern Brazil, and high prevalence was observed of farms with bipartition sheep, but a low number of animals with scrotum bipartition was identified.
机译：山羊和绵羊具有形态特征，可以适应沙漠和半干旱地区。山羊中已经报道了阴囊分裂现象，即阴囊分裂。这种解剖结构增加了每个睾丸暴露于环境温度下的表面，有利于散热并提高了生殖效率。考虑到已经有山羊物种的研究证明了这一特征的存在对生殖参数的影响，据估计巴西帕拉依巴偏远地区帕托斯市饲养的绵羊群中阴囊分裂的患病率。在巴西帕拉伊巴州帕托斯微区的四个城市的农场中，共检查了331只公羊，还在该城市的市政屠宰场进行了同样的研究，对456只动物进行了检查。根据分析，在所访问的农场中，有66.67％的绵羊或多只绵羊的阴囊被分成两部分，其中农场的屠宰率为11.48％，屠宰场的感染率为14.47％。田间动物的阴囊分割度为阴囊总长度的9.59±1.035％，屠宰场的阴囊分割度为阴囊总长度的12.89±0.749％，其特征是阴囊分割度小于阴囊长度的50％。集约饲养（OR = 16.6）和多珀（Dorper）品种（OR = 6.91）的变量被确定为与阴囊分裂相关的因素。结论是，在巴西东北部帕拉伊巴州半干旱地区的帕托斯市饲养的绵羊中，阴囊分割是一个特征，在有二分割绵羊的农场中发现了很高的流行率，但阴囊分割的动物数量很少。确定。

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