Associative effects on total tract digestibility in horses fed different ratios of grass hay and whole oats

Karlsson, Christer; Lindberg, Jan Erik; Rundgren, M.

doi:10.1016/s0301-6226(99)00178-5

Cited by 52 publications

(25 citation statements)

References 14 publications

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“…The results of these trials provide interesting information on the capacity of nutrient utilisation in both the P and the C feeds. In fact, we agree with Palmgren Karlsson et al [9] that the digestibility of the total ration is not consistently equivalent to the sum of the individual components.…”

Section: Discussionsupporting

confidence: 90%

“…The evaluation of nutrient digestibility must take into account the type and quality of feeds and in particular the fibrous components of roughages, which can modify the fermentation activity of the digestive tract [9]. The results of these trials provide interesting information on the capacity of nutrient utilisation in both the P and the C feeds.…”

Section: Discussionmentioning

confidence: 99%

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Nutrient Value and Digestibility of Diets with Different Roughages for Jumping Horses in Italy

Trombetta

Mattii

Priori

et al. 2006

JES

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In the last twenty years, the increased interest in breeding jumping horse has not been paralleled by research into their energy requirements. A crucial factor in breeding race horses is the quality of the ration, which must sustain and promote high performances. In addition to the energy required for maintenance, energy needs depend on muscular, skeletal, respiratory and cardiovascular system activity. The energy expenditure related to work performed depends on effort duration and intensity, but it may be affected by the effect of the lack of oxygen at the end of the work, increased energy requirement as a reaction to "stress", and a general increase in metabolic rate. Formulation of a diet that meets the nutrient requirements of athlete horses must also consider the effects of the combination of different dietary components. The present research was carried out in jumping horses to evaluate the nutritional value and t h e d ig e s t i bi l i t y o f t h r ee types of roughages administered with two different feedstuffs.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Nutrient Value and Digestibility of Diets with Different Roughages for Jumping Horses in Italy

Trombetta

Mattii

Priori

et al. 2006

JES

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“…In the present trial, dry matter digestibility (64.1% and 66.5% for LFD and HFD, respectively) were slightly higher than those reported by Palmgren Karlsson et al (2000) for diets with a similar forage/ concentrate ratio. The higher DM digestibility of the HFD when compared to control diet is in agreement with trends found by Rich et al (1981, cited by Mc Cann et al, 1987) and Mc Cann et al (1987, but contrasts with the results obtained by Jansen et al (2000Jansen et al ( , 2002 who observed a decrease in DM digestibility with the inclusion of 15 to 28% soybean oil in the concentrate fraction of the diet.…”

Section: Discussioncontrasting

confidence: 76%

Linseed oil supplementation in diet for horses: Effects on palatability and digestibility

et al. 2008

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“…Controversial results have been obtained, which may be due to differences between experimental designs. Increasing levels of starchy concentrate in the diet of horses at the expense of the hay proportion led to a decrease in the total tract apparent digestibility of fibre fractions (Vermorel et al, 1997;Palmgren-Karlsson et al, 2000) or an increase (Vermorel et al, 1997). As the proportion of concentrate remained constant, the increase of starch level in the concentrate at the expense of NDF level led to either a decrease (Jouany et al, 2008) or an increase in fibre total tract apparent digestibility (Swyers et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Impact of barley form on equine total tract fibre digestibility and colonic microbiota

Philippeau

Sadet-Bourgeteau

Varloud³

et al. 2015

Animal

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This study aimed at assessing the impact of four barley forms on total tract apparent digestibility of dietary fibre in horses fed a large amount of starch in the morning meal (0.27% BW). Processed barley forms had a greater pre-caecal starch digestibility than the whole form. Based on this result, we hypothesised that using barley-processing methods would limit the potential dumping of undegraded starch in the hindgut of horses and, consequently, the potential negative effect on fibre degradation in the hindgut. In a 4 × 4 latin square design, four mature geldings fitted with a right ventral colon-fistula were fed a meadow hay : concentrate (62 : 38; dry matter (DM) basis) diet at 1.7% BW. The concentrate was made of 80% barley distributed either as whole grain or as processed forms: 2.5 mm ground, pelleted or steam-flaked. For each period, total tract apparent digestibilities of DM, NDF and ADF were determined over 3 consecutive days by total faecal collection, whereas pH, volatile fatty acids (VFA) concentrations and cultural functional bacteria counts (total anaerobic, cellulolytic bacteria, lactic acid producers, amylolytic bacteria and lactic acid utilisers) in colonic content were evaluated on 1 day 4 h after the morning meal. Total tract apparent digestibility of DM and dietary fibre was influenced ( P < 0.05) by barley form. Diets including thermo-mechanically treated barley forms led to a higher ( P < 0.05) total tract apparent digestibility of NDF than those constituted of ground barley and also led to a greater ( P < 0.05) total tract apparent digestibility of ADF than those made of whole or ground barley forms. However, no significant difference was observed in colonic pH, VFA concentrations and cultural bacteria concentrations. Owing to a high starch supply in the morning meal, the concentration of the functional bacteria in the colonic content averaged 7.8 log CFU/ml, 5.9 NPM/ml, 6.9 and 7.3 CFU/ml for total anaerobic, cellulolytic, amylolytic and lactic acid-utilising bacteria, respectively. Consequently, providing horses with pelleted or steam-flaked instead of ground barley forms may limit the negative impact of starch on fibre digestibility in horses fed a high level of starch in the morning meal (0.27% BW). Moreover, the fibre-to-starch ratio fed in this experiment did not cause any digestive upset.

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Associative effects on total tract digestibility in horses fed different ratios of grass hay and whole oats

Cited by 52 publications

References 14 publications

Nutrient Value and Digestibility of Diets with Different Roughages for Jumping Horses in Italy

Nutrient Value and Digestibility of Diets with Different Roughages for Jumping Horses in Italy

Linseed oil supplementation in diet for horses: Effects on palatability and digestibility

Impact of barley form on equine total tract fibre digestibility and colonic microbiota

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