马匹在连续放牧和受空间限制的轮牧期间的时间预算不同

IF 1.9 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Veterinary and Animal Science Pub Date : 2024-06-07 DOI:10.1016/j.vas.2024.100371
Beverly Gartland , William Strunk , Bruce Schulte , Fred DeGraves , Jim Koostra
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引用次数: 0

摘要

过度放牧优质牧草会导致马匹肥胖并引发相关的健康问题,例如蹄叶炎;限制牧草的摄入量可以减轻马匹的体重。本研究旨在确定限制空间的轮牧对马体重(BW)和时间预算的影响。将 8 匹只需饲养的成熟公马和母马随机分配到空间受限轮牧组(SRG;体重 512 ± 6 kg;n = 4)或连续放牧组(CG;体重 517 ± 49 kg;n = 4),轮牧 42 天;而 CG 组的马匹则在 42 天内持续放牧类似的无毒内生菌感染的高羊茅牧草,所提供的能量高于维持需求 SRG 组的马匹在 6 周内每 7 天被转移到一个新的区域。第 7 天,即每周的 16:00 时,将马匹牵入室内,隔夜不喂食。第二天早上 7 点,在放风前记录体重。观察人员每周三天,每隔六分钟同时记录SRG和CG马全天的行为。这包括对所有马匹进行 30 秒钟的扫描。吃草的比例与站立的比例成反比。吃草的比例受处理与时间交互作用的影响,即在第2周和第3周,SRG比CG表现出更多的吃草行为,然后在第4周、第5周和第6周发生逆转。
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Time budgets differ in horses during continuous and space-restricted rotational grazing

Horses can become obese and develop related health issues such as laminitis from excessive grazing on high-quality pasture grass; limiting pasture intake can allow weight loss to occur. The objective of this study was to determine the effect of space-restricted rotational grazing on body weight (BW) and time budgets in horses. Eight mature geldings and mares with maintenance-only requirements were randomly assigned to either a space-restricted rotational grazing group (SRG; BW 512 ± 6 kg; n = 4) or a continuous grazing group (CG; BW 517 ± 49 kg; n = 4) for 42 d SRG horses grazed an area with dimensions to provide 80–90 % of mean digestible energy requirement for the 4 horses over a 7-d grazing period; whereas, the CG horses continuously grazed similar non-toxic endophyte-infected tall fescue pasture providing greater than maintenance requirements for the 42 d Horses in the SRG group were moved to a new area every 7 d for 6 weeks. On d 7 at 1600 h of each week, horses were brought inside, and feed was withheld overnight. At 0700 h the next day, BWs were recorded prior to turnout. Observers recorded behaviors simultaneously on SRG and CG horses every six minutes throughout the day three days per week according to an ethogram. This included 30 s scans of all horses. Proportion of grazing and standing had an inverse relationship. Proportion of grazing was affected by the treatment by time interaction, which grazing was displayed more in SRG than CG during weeks 2 and 3, and then reversed weeks 4, 5 and 6.

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来源期刊
Veterinary and Animal Science
Veterinary and Animal Science Veterinary-Veterinary (all)
CiteScore
3.50
自引率
0.00%
发文量
43
审稿时长
47 days
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