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Wrapped forages for horses

Müller, Cecilia (2007). Wrapped forages for horses. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2007:44
ISBN 978-91-576-7343-5
[Doctoral thesis]

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Wrapped forages, in the form of silage and haylage, have become more common in horse diets during recent years. Silage and haylage is commonly produced in big bales. However, for use in stables with few animals, these bales often contain too much forage to be consumed before onset of aerobic deterioration. Smaller bales are therefore of interest, but knowledge of the chemical composition (including vitamin content), fermentation pattern and changes in those variables during storage of small bales is limited, and was therefore investigated. Small bale forage contained higher pH, higher ethanol and lower lactic acid content, compared to general levels in chopped silo silage, but low levels of ammonia-N and butyric acid. There were no general effects of dry matter or extent of fermentation on α-tocopherol and β-carotene contents in the preserved forages, but linear positive correlations between the vitamins and lactic acid existed. In general, long-term storage (14 months) of small bales influenced fermentation variables, yeasts and pH, but silage was affected by storage to a larger extent than haylage. Although changes occurred during storage, values in two month old bales correlated well with values obtained after 14 months. The influence of forage conservation methods on horse preference was also investigated. Hay, haylage and silage were produced from the same grass crops and the forages were offered simultaneously to horses. Silage was the first chosen forage, had the highest rate of consumption and the longest eating time, while hay had the lowest consumption rate and the shortest eating time. Haylage was intermediate between hay and silage in both eating time and rate of consumption. The influence of forage conservation methods on equine hindgut fermentation was studied using fistulated horses. Hay, haylage and silage were produced from the same grass crop and fed in a changeover study. Horses were sampled after being fed the forage for 21 days, and a kinetic study of colon fermentation was performed in each period. Forage conservation method had no effect on microbial or chemical composition in the right ventral colon or faeces on Day 21. All forages showed similar fermentation kinetics in the right ventral colon before (0h) and at 2, 4, 8 and 12 h after feeding.

Authors/Creators:Müller, Cecilia
Title:Wrapped forages for horses
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :May 2007
Number of Pages:57
ALLI. Müller, C.E. 2005. Fermentation patterns of small-bale silage and haylage produced as a feed for horses. Grass and Forage Science 60, 109-118. II. Müller, C.E., Pauly, T.M. & Udén, P. 2007. Storage of small bale silage and haylage–influence of storage period on fermentation variables and microbiological composition. Grass and Forage Science 62 (3), xx-xx (In Press). III. Müller, C.E., Möller, J., Krogh Jensen, S. & Udén, P. 2007. Tocopherol and carotenoid levels in baled silage and haylage in relation to horse requirements. Animal Feed Science and Technology (In press). IV. Müller, C.E. & Udén, P. 2007. Preference of horses for grass conserved as hay, haylage or silage. Animal Feed Science and Technology 132, 66-78. V. Müller, C.E. & Udén, P. 2007. Effect of forage conservation method on microbial and chemical composition in the hindgut of horses fed hay, haylage and silage (Submitted).
Place of Publication:Uppsala
ISBN for printed version:978-91-576-7343-5
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:horses, hay, haylage, silage, silage making, baling, forage, seed storage, feed crops, nutritive value, animal feeding, vitamins, fermentation, chemical composition
Keywords:silage, haylage, hay, horse, preference, hindgut fermentation, storage, bales
Permanent URL:
ID Code:1442
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: Cecilia Müller
Deposited On:03 May 2007 00:00
Metadata Last Modified:02 Dec 2014 10:12

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