Description of patterns of ear and tail lesions during the grower-finisher period in a commercial pig farm.

IF 3 2区 农林科学 Q1 VETERINARY SCIENCES
Nienke van Staaveren, Joana Pessoa, Laura Ann Boyle, Julia Adriana Calderón Díaz
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Abstract

Background: Ear and tail lesions are prevalent indicators of impaired welfare observed in pig production with different multifactorial causes. Understanding the progression of ear and tail lesions over time is important to implement preventative strategies on commercial pig farms. Therefore, this case study aimed to provide a detailed account of patterns of ear and tail lesions in pigs on a single commercial farm during the grower-finisher period.

Case presentation: A total of 1,676 12-week old pigs (n = 773 females and n = 903 males, all tail docked) were followed from arrival to the grower facilities until transferred to the finisher stage on a commercial pig farm in Ireland. Pigs were individually weighed and inspected for the severity of fresh ear and tail lesions (score 0-4) on transfer to the first grower (24.9 ± 5.33 kg, 12 weeks of age, n = 1,676 pigs), second grower (33.3 ± 7.04 kg, 14 weeks of age, n = 1,641 pigs), and finisher stage (60.2 ± 7.74 kg, 18 weeks of age, n = 1,626 pigs). Due to the low number of pigs with high scores, ear lesions were classified as no (score 0), mild (score 1), moderate (score 2) and severe (score ≥ 3) and tail lesions were classified as no (score 0), mild (score 1), and moderate-to-severe (score ≥ 2). Ear lesions were more prevalent than tail lesions at each inspection. There were approx. 19% of pigs with ear lesions at all three inspections but no pigs presented with tail lesions at all three inspections. When considering the specific severity categories, we observed 32 different ear lesion score combinations and 15 different tail lesion score combinations across the three inspections.

Conclusion: The high number of observed patterns of ear and tail lesions suggest large individual variability in lesion progression. Ear lesions were more of an issue than tail lesions and little is known about this health and welfare problem indicating that further research into causes and management strategies is needed.

描述一家商业化养猪场在生长-育成期的耳部和尾部病变模式。
背景:耳部和尾部病变是养猪生产中观察到的福利受损的普遍指标,其原因是多方面的。了解耳部和尾部病变随时间推移的发展情况,对于在商业化养猪场实施预防策略非常重要。因此,本案例研究旨在详细介绍一个商业化猪场在生长-育成期猪耳和尾部病变的模式:在爱尔兰的一家商业化养猪场,对 1676 头 12 周龄的猪(n = 773 头雌性猪和 n = 903 头雄性猪,所有猪的尾部均已去尾)进行了跟踪调查,这些猪从到达生长猪场到转入育成猪阶段。在转入第一生长阶段(24.9 ± 5.33 千克,12 周龄,n = 1,676 头猪)、第二生长阶段(33.3 ± 7.04 千克,14 周龄,n = 1,641 头猪)和完成阶段(60.2 ± 7.74 千克,18 周龄,n = 1,626 头猪)时,分别对猪只进行称重,并检查新鲜猪耳和猪尾病变的严重程度(0-4 分)。由于高分猪的数量较少,耳部病变分为无(0 分)、轻度(1 分)、中度(2 分)和重度(≥ 3 分),尾部病变分为无(0 分)、轻度(1 分)和中重度(≥ 2 分)。在每次检查中,耳部病变比尾部病变更为普遍。在所有三次检查中,约有 19% 的猪只耳部有病变,但在所有三次检查中,没有猪只尾部有病变。考虑到具体的严重程度类别,我们在三次检查中观察到 32 种不同的耳部病变评分组合和 15 种不同的尾部病变评分组合:结论:观察到的大量耳部和尾部病变模式表明,病变发展的个体差异很大。耳部病变比尾部病变更令人担忧,人们对这一健康和福利问题知之甚少,这表明需要进一步研究病因和管理策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Porcine Health Management
Porcine Health Management Veterinary-Food Animals
CiteScore
5.40
自引率
5.90%
发文量
49
审稿时长
14 weeks
期刊介绍: Porcine Health Management (PHM) is an open access peer-reviewed journal that aims to publish relevant, novel and revised information regarding all aspects of swine health medicine and production.
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