The effect of presenting forage in multi-layered haynets and at multiple sites on night time budgets of stabled horses

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Ellis, A.D., Redgate, S.E. ORCID: 0000-0002-3122-0343, Zinchenko, S., Owen, H., Barfoot, C. and Harris, P., 2015. The effect of presenting forage in multi-layered haynets and at multiple sites on night time budgets of stabled horses. Applied Animal Behaviour Science, 171, pp. 108-116. ISSN 0168-1591

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Official URL: http://doi.org/10.1016/j.applanim.2015.08.012

Abstract

The aim of this study was to explore the efficacy of multi-layered haynets and multiple presentation of haynets to increase time spent on feed intake behaviour at night (13 hours observation). For preliminary assessment two horses performing the oral stereotypy of crib biting were included. Six horses received the same amount of forage during a 22-day, crossover study where treatment consisted of either forage presentation in a single small-holed haynet (SH) or the forage was divided between 3 haynet combinations hung up simultaneously = multiple haynets (MH). The three haynets presented simultaneously consisted of a) MH single haynet (same as SH), b) MH double layered haynet and c) MH triple layered haynet. Multiple haynets were presented, in random order, on three sides of the stable. Horses were filmed using a video surveillance camera with infrared light source. Behaviour was observed for at least 4 nights per treatment (one night during the acclimatisation period [nights 2-4] and three nights during the end period [nights 7-11]). The observation period commenced at 16:30 - 17.00h (point of haynets being presented) until 06.00h (all horses) or 9.00h (2 crib-biting horses) the next morning. Data was analysed for normal distribution and Anova between haynets, paired t-tests between treatments and Pearson Correlation were used (SPSS. 17.00; 2012). There was a significant effect of type of haynet (p<0.001) on intake time per kg forage (min/kg for SH: 39; MH all (data combined): 51; MH Single: 27; MH Double: 67; MH Triple: 78; overall sem. 8.9). The overall time budget (minutes per observation hour) showed a significant difference between treatments for eating from haynet, standing still, locomotion and drinking. Horses finished eating from SH haynets at around 01:38 am (±1.05 hours s.d.), were last observed at the double net at 03:00 am and at the triple net at 05:12 am (±1.25 hours s.d.). Based on these results, providing 6 kg of forage in 3 double-layered, 2.5 cm haynets spread around the stable could potentially lead to an increased feeding time of 2 hours per night compared to a single 2.5 cm holed haynet containing 6 kg. From the continuous observation data a clear visual difference in crib-biting pattern and therefore motivation to perform crib-biting emerged between the two stereotypic horses.

Item Type:

Journal article

Publication Title:

Applied Animal Behaviour Science

Creators:

Ellis, A.D., Redgate, S.E., Zinchenko, S., Owen, H., Barfoot, C. and Harris, P.

Publisher:

Elsevier

Date:

2015

Volume:

171