限制饮食对超重和肥胖母马的身体状况、组成和福利的影响。

Effect of dietary restriction on body condition, composition and welfare of overweight and obese pony mares.

机构信息

University of Liverpool, School of Veterinary Science, Leahurst, Neston, Cheshire CH64 7TE, UK.

出版信息

Equine Vet J. 2010 Oct;42(7):600-10. doi: 10.1111/j.2042-3306.2010.00110.x.

DOI:10.1111/j.2042-3306.2010.00110.x

PMID:20840575

Abstract

REASONS FOR PERFORMING STUDY

Increased prevalence of obesity among UK horses and ponies demands evidence-based advice to promote weight loss.

HYPOTHESIS

Restriction of dry matter intake (DMI) to 1% of body mass (BM, 67% [corrected] of predicted maintenance digestible energy [DE] requirements) would promote weight loss without compromise to health.

METHODS

Five mature (mean ± s.e. 10 ± 2 years), overweight/obese pony mares (BM, 257 ± 20 kg: body condition score [BCS] 6.8/9 ± 0.5) were studied over 12 weeks. Animals were individually housed. Daily provision of a chaff-based, complete diet (measured DE, 8.5 MJ/kg DM) was restricted to 1% of actual BM as DMI daily. BCS, girth measurements and ultrasound-derived measures of subcutaneous fat depth overlying the gluteal region and 12th intercostal space (rib-eye) were recorded weekly. Body fat content was estimated at the beginning and end of the study by deuterium oxide dilution methods. Clinical biochemistry was monitored weekly. Behaviour was observed (24 h, 3/5 ponies) on 3 occasions.

RESULTS

BM decreased by 4.3 ± 1.1% during the first week and thereafter by 0.7 ± 0.1% of BM at end of Week 1 each week. BCS remained constant. Heart and belly girths, rump width and subcutaneous fat depth at rib-eye decreased significantly with time and BM. Fat comprised 45 ± 19% of BM loss. Fatter animals lost relatively more fat. With decreased feeding activity, time spent in 'play' and rest increased by 36 ± 11% and 438 ± 95%, respectively.

CONCLUSIONS

This plane of nutrition resulted in an overall rate of weight loss of 1% of outset BM weekly. BCS was not a useful index of early weight loss but heart and belly girths and subcutaneous rib-eye fat were identified as alternative markers.

POTENTIAL RELEVANCE

This study provides an evidence-base for the management of weight loss in obese animals, especially those for which exercise may be contra-indicated.

摘要

研究目的

英国马和矮种马肥胖症的发病率不断上升，这就需要有循证医学建议来促进减重。

假设

将干物质摄入量（DMI）限制在体重的 1%（67%[修正]预测维持可消化能量[DE]需求），在不影响健康的情况下促进减重。

方法

对 5 匹成熟（平均±标准误 10±2 岁）、超重/肥胖矮种母马（BM，257±20kg：体况评分[BCS]6.8/9±0.5）进行了为期 12 周的研究。动物单独饲养。每日限量供应以干草为基础的全价日粮（实测 DE 为 8.5MJ/kg DM），摄入量限制为实际 BM 的 1%，即 DMI 每日。每周记录 BCS、周长测量值和臀部区域及第 12 肋间的皮下脂肪深度的超声测量值。在研究开始和结束时，通过氘水稀释法估计体脂肪含量。每周监测临床生化指标。在 3 个时间点（3/5 匹马）观察行为。

结果

第 1 周，BM 减少了 4.3±1.1%，此后每周减少 0.7±0.1%的 BM。BCS 保持不变。心脏和腹部周长、臀部宽度和肋眼处的皮下脂肪深度随时间和 BM 显著下降。脂肪占 BM 损失的 45±19%。肥胖程度较高的动物相对损失更多的脂肪。随着摄食活动减少，“玩耍”和休息时间分别增加了 36±11%和 438±95%。