Beilage E, Steffens S, Schoon H A, Bollwahn W
Klinik für kleine Klauentiere und forensische Medizin, Tierärztlichen Hochschule Hannover.
Tierarztl Prax. 1996 Feb;24(1):31-5.
The development of the shape of teats in 30 female piglets, of which at least one of the parents showed inverted teats, was systematically observed during three to four months. Similar investigations could be carried out in sows with inverted teats from day 60 of pregnancy until the end of lactation. There is no evidence that inflammations or traumatas are causes for teat hypoplasias, and there is no correlation between "teat necroses" of piglets and the incomplete teat development. The wide distribution of teat abnormities is shown by investigations of slaughter pigs: 20% of fattening pigs, 17% of boars and 6% of sows were affected by inverted teats. 75% of the inverted teats were seen periumbilical. The morphology of hypo- and aplastic teats in boars is described. With regard to the selection of affected pigs, a first investigation is recommended in the 12th week of life and a second one at the age of five month is recommended. Particular attention has to be paid to boars for mating and artifical insemination in order to exclude affected boars as early as possible from breeding.
对30头雌性仔猪乳头形状的发育情况进行了系统观察，这些仔猪中至少有一方父母表现出乳头内翻，观察期为三到四个月。对于怀孕60天至哺乳期结束的乳头内翻母猪，也可进行类似的研究。没有证据表明炎症或创伤是乳头发育不全的原因，仔猪的“乳头坏死”与乳头发育不完全之间也没有关联。对屠宰猪的调查显示乳头异常分布广泛：20%的育肥猪、17%的公猪和6%的母猪受到乳头内翻的影响。75%的乳头内翻出现在脐周。描述了公猪中发育不全和发育不良乳头的形态。关于受影响猪的选择，建议在出生后第12周进行首次调查，在五个月龄时进行第二次调查。对于用于配种和人工授精的公猪，必须格外注意，以便尽早将受影响的公猪排除在繁殖之外。
