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羔羊离乳 1. 一项关于养殖方法的调查。

Rearing goat kids away from their dams 1. A survey to understand rearing methods.

机构信息

Department of Animal Sciences, University of Reading, Reading, UK.

Department of Animal Sciences, University of Reading, Reading, UK.

出版信息

Animal. 2022 Jun;16(6):100547. doi: 10.1016/j.animal.2022.100547. Epub 2022 May 25.

Abstract

Despite an estimated global goat population of over one billion, little is known about methods being used to feed milk to artificially reared kids (reared away from their dams) and how kids are weaned from these systems. Quantifying and characterising current methods utilised on farms will enable future targeted research to investigate best practice methods for milk feeding and weaning of artificially rearedkids.A recall-based survey that investigated on-farmkid-rearingpractices (focusing on the milk feeding and weaning stages) was distributed via social media, and regional goat organisations across multiple countries. A total of 242 responses from 16 countries were collected and geographically grouped. Responses that could not be grouped sufficiently were removed (nine responses from eight countries). A total of 233 responses from eight countries (United States of America (USA) 72; United Kingdom (UK) 71; Australia 33; Canada 23; New Zealand 20; European Union (EU) 14), were analysed. Most farms (217; 93%) bred their own kids. The most common milk feeding method was bottle feeding, used on 135 farms (57.9%), followed by ad libitum feeding used by 72 (30.9%). A relationship between number of kids reared and feeding system was identified, χ(3, N = 233) = 89.605,P < 0.001, with farms rearing > 100 kids more likely to feed milk ad libitum. A total of 170 farms (72.9%) were weaned based on a target age and 85 (36.4%) on a target weight, 53 (22.7%) used both and 45 (19.3%) neither. Target weaning ages and weights varied across countries; the median age was 84 days (interquartile range (IQR) 56-84), and the median weight was 16 kg (IQR 15-18). A difference was found between milk feeding systems for weaning method (Χ(2, N = 232) = 63.797,P≤0.001), with kids most likely to be abruptly weaned from ad libitum systems (or gradually weaned from bottle feeding). Abrupt weaning was used by 67 farms (28.8%), and gradual weaning was used by 165 (71.1%). Gradual weaning strategies included reducing milk quantity (150 farms; 93% of farms providing detail) and diluting milk (six farms; 4%). A total of 169 (72.5%) supplied enrichment that met the survey's definition; items to climb on/hide in were most common, provided by 157 farms (92.8%). Findings suggest differing practices in smaller-scalebottle-fedversuslarger-scalead libitummilksystems, likely reflecting differing system needs.This highlights a requirement for welfare-focused research in kids reared artificiallyin order to identify and communicatebest practices to ensure on-farm welfare is optimised within each system.

摘要

尽管全球山羊数量估计超过 10 亿,但对于用于人工喂养羔羊(从其母羊身边带走)的方法以及羔羊如何从这些系统中断奶知之甚少。量化和描述当前在农场使用的方法将使未来能够针对人工喂养羔羊的最佳喂养和断奶方法进行有针对性的研究。

一项基于回忆的调查,调查了农场的羔羊饲养实践(重点是喂养和断奶阶段),通过社交媒体和多个国家的地区山羊组织进行了调查。共收到来自 16 个国家的 242 份回复,并按地理位置进行了分组。无法充分分组的回复被删除(来自 8 个国家的 9 份回复)。来自 8 个国家的 233 份回复(美国 72 份;英国 71 份;澳大利亚 33 份;加拿大 23 份;新西兰 20 份;欧盟 14 份)进行了分析。大多数农场(217 家;93%)自己繁殖羔羊。最常见的喂养方法是奶瓶喂养,有 135 家农场(57.9%)采用,其次是自由喂养,有 72 家(30.9%)采用。根据数量和喂养系统之间的关系,确定 χ(3, N = 233) = 89.605,P < 0.001,饲养超过 100 只羔羊的农场更有可能自由喂养牛奶。共有 170 家农场(72.9%)根据目标年龄断奶,85 家(36.4%)根据目标体重断奶,53 家(22.7%)同时使用两种方法,45 家(19.3%)既不使用。断奶的目标年龄和体重因国家而异;中位数年龄为 84 天(四分位距(IQR)56-84),中位数体重为 16 公斤(IQR 15-18)。发现断奶方法因喂养系统而异(Χ(2, N = 232) = 63.797,P≤0.001),羔羊最有可能从自由喂养系统中突然断奶(或从奶瓶喂养中逐渐断奶)。有 67 家农场(28.8%)采用突然断奶,165 家农场(71.1%)采用逐渐断奶。逐渐断奶的策略包括减少牛奶量(150 家农场;93%的农场提供了详细信息)和稀释牛奶(6 家农场;4%)。共有 169 家(72.5%)提供了符合调查定义的补充物;157 家农场(92.8%)提供了可供攀爬/隐藏的物品。研究结果表明,在小规模奶瓶喂养和大规模自由喂养牛奶系统中存在不同的做法,这可能反映了不同的系统需求。

这突出表明,需要在人工饲养的羔羊中进行以福利为重点的研究,以确定和传达最佳做法,以确保每个系统内的农场福利得到优化。

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