新断奶仔猪粪便异常的早期行为指标。

IF 3 2区 农林科学 Q1 VETERINARY SCIENCES
Vivian L Witjes, Fleur Veldkamp, Francisca C Velkers, Ingrid C de Jong, Ellen Meijer, Johanna M J Rebel, Jan A Stegeman, Tijs J Tobias
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引用次数: 0

摘要

背景:断奶后腹泻(PWD)是断奶仔猪经常出现的健康和福利问题。表明健康受损的行为变化可能在症状出现之前就能被检测到,这有助于及早发现断奶后腹泻的发展,从而进行有针对性的及时干预。目前的算法可在群体水平上自动进行行为分类,而疾病性脉管炎可能不会影响一个猪栏中的所有仔猪,因此可能需要进行个体水平的分析。因此,本研究旨在评估圈舍活动或仔猪个体行为的变化是否可以作为发生破伤风的早期指标。在 3 个重复轮次中,72 头 27 日龄断奶的仔猪(家养苏门答腊猪,陆地种 x 大白)被饲养在 4 个猪栏中,每个猪栏饲养 6 头仔猪。在断奶后的头两周内,使用直肠拭子对每头仔猪的粪便颜色和稠度进行六次评分(0-5;≥ 3 为异常粪便)。此外,还采用类似的评分标准,每天对圈舍地面上的粪便进行评估。行为评分采用两种方法。单个行为(吃、喝、站立、行走;n = 48)由人工根据前两轮的视频进行即时评分,间隔时间为五分钟;而圈舍活动(吃、喝、移动;n = 12)则由市售算法根据所有三轮的视频进行自动连续分析:结果:在粪便评分前一天表现出相对较高比例的站立行为的仔猪,其粪便颜色评分异常的几率增加(几率比 (OR):4.8;95% 置信区间 (CI):1.5-15.3)。此外,在两天前仔猪活动较多的猪圈中,粪便颜色异常的几率也会增加(OR:6.14;1.26):我们的研究结果表明,在腹泻发生前,个别仔猪站立次数的增加和圈舍内移动活动的增加可能是腹泻病的重要行为指标。因此,进一步开发可识别从猪栏到个体的群体行为异常的现有算法,可能是改善健康和福利监测并使其更有针对性的有效途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Early behavioral indicators of aberrant feces in newly-weaned piglets.

Background: Post-weaning diarrhea (PWD) is a frequently occurring health and welfare issue in weaned piglets. Behavioral changes indicating impaired health may be detectable before the onset of signs and could be useful to detect the development of PWD early, enabling targeted and timely interventions. Current algorithms enable automated behavioral classification on the group level, while PWD may not affect all piglets in one pen and individual level analysis may be required. Therefore, this study aimed to assess whether changes in pen activity or individual piglet behavior can be early indicators of the occurrence of PWD. During 3 replicated rounds, 72 piglets (Sus scrofa domestica, Landrace x Large White) weaned at 27 days of age, were housed in 4 pens with 6 piglets each. Individual fecal color and consistency were scored (0-5; ≥ 3 considered as aberrant feces) six times during the first two weeks post-weaning using rectal swabs. Additionally, using a similar scoring scale, feces on the pen floor were assessed daily. Two methods were applied for behavioral scoring. Individual behaviors (eating, drinking, standing, walking; n = 48) were scored manually and instantaneously with a five-minute interval from videos of the first two rounds, while pen activity (eating, drinking, moving; n = 12) was analyzed automatically and continuously using a commercially available algorithm from videos of all three rounds.

Results: Piglets showing a relatively higher proportion of standing behavior one day before fecal scoring had increased odds of an aberrant fecal color score (odds ratio (OR): 4.8; 95% confidence interval (CI): 1.5-15.3). Furthermore, odds of aberrant colored feces increased in pens where piglets showed more moving activity two days before (OR: 6.14; 1.26 < 95%CI < 29.84), which was also found for fecal consistency (OR: 4.77; 95%CI: 1.1-21.6).

Conclusions: Our results indicate that increased standing in individual piglets and an increased moving activity on the pen level may be important behavioral indicators of PWD before the onset of diarrhea. Further development of current algorithms that can identify behavioral abnormalities in groups, from the pen to the individual level, may therefore be a promising avenue for improved and targeted health and welfare monitoring.

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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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