Apparent digestibility of wheat bran and extruded flax in horses determined from the total collection of feces and acid-insoluble ash as an internal marker

Marco, Michele De; Miraglia, N.; Peiretti, P. G.; Bergero, Domenico

doi:10.1017/s1751731111001297

Cited by 12 publications

(11 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings are supported by Takagi et al [21] (intakes were not given) who reported very low (21.8) digestibility for the crude fibre of linseed in horses. In one study, the inclusion of extruded linseed (20% in DM) in the diets of horses decreased the digestibility of nutrients compared to hay-only and hay/wheat bran diets [56]. In agreements with the results of the present study, Smolders et al [57] found increased digestibility values of the diet nutrients when horses were fed compound feed containing (16%) linseed expeller plus more digestible ingredients (cereals).…”

Section: Diet Digestibilitysupporting

confidence: 90%

Effect of Linseed (Linum usitatissimum) Groats-Based Mixed Feed Supplements on Diet Nutrient Digestibility and Blood Parameters of Horses

Saastamoinen

Särkijärvi

2020

Animals

View full text Add to dashboard Cite

Linseed (Linum usitatissimum) and its by-products are common supplements used in equine diets and are claimed to have beneficial health effects. In this study, the effect of linseed groat-based fibrous feed supplements on diet digestibility was studied. Also, possible detrimental health effects due to continuous feeding of supplemental feeds containing linseed were examined by evaluating blood parameters. The experimental design was arranged as two balanced 3 × 3 Latin Squares. The horses were individually fed at the maintenance energy level, the forage-to-concentrate ratio being 70:30, with three diets: (A) Control diet consisting of dried hay and whole oats; (B) Control diet + Feed 1; and (C) Control diet + Feed 2. Feed 1 contained 70% of linseed groats, 15% dried carrot, 10% dried garlic and 5% molasses. Feed 2 contained 65% linseed groats, 15% molassed sugar-beet pulp, 10% dried garlic, 5% dried carrot and 5% molasses. Digestibility data were obtained by using chromium mordanted straw as an indigestible external marker for the estimation of apparent digestibility. Blood samples were collected from the jugular vein at the end of each feeding period to evaluate the possible effects of the supplemented diets B and C on the health of the horses. Diets B and C had a higher digestibility of crude protein compared to the control diet A (p < 0.05). In addition, the digestibility of ether extract was higher in the supplemented diets than in the basal feeding (p < 0.01). There were no statistically significant differences or trends (p > 0.05) in the blood parameters between the treatments. It is concluded that linseed groat-based supplements (offering approximately 6.3%–6.7% linseed groats in the diet’s dry matter (DM), or 0.8 g/kg BW/d), and feed containing soluble fibre sources (sugar-beet pulp, dehydrated carrot), improved the crude protein and fat digestibility of hay-oats diets of horses, and can be used, for example, in feeding strategies replacing grains in the horse rations in order to reduce the intake of starch without any adverse effects on the blood parameters and health of the horses.

show abstract

Section: Diet Digestibilitysupporting

confidence: 90%

Effect of Linseed (Linum usitatissimum) Groats-Based Mixed Feed Supplements on Diet Nutrient Digestibility and Blood Parameters of Horses

Saastamoinen

Särkijärvi

2020

Animals

View full text Add to dashboard Cite

show abstract

“…We therefore suggest that lignin cannot be used as a reliable indigestible marker in horses. De Marco et al (2012) have also shown that using AIA as an internal marker led to average values similar to those obtained with total collection. Fecal recovery is reported to be more reliable when the AIA level in feed is increased (McCarthy et al, 1974).…”

Section: Discussionsupporting

confidence: 61%

Phosphorus balance and fecal losses in growing Standardbred horses in training fed forage-only diets1

Ögren

Holtenius

Jansson

2013

Journal of Animal Science

View full text Add to dashboard Cite

This study examined the P balance and fecal P losses in growing Standardbred horses in training fed a forage-only diet with or without P supplementation and assessed the magnitude and proportion of the soluble, inorganic P (Pi) fraction in feces. Fourteen Standardbred horses (aged 20.0 ± 0.3 mo) adapted to ad libitum intake of grass forage containing 0.25% P were used in a crossover experiment investigating 2 dietary treatments with (high-P) and without (low-P) mineral supplementation for 6 d. Daily feed intake and refusals were weighed. Spot samples of feces were collected twice daily on d 4 to 6 and analyzed for total P and Pi. Acid-insoluble ash was used as a marker for total fecal output. Spot samples of urine were collected once on d 4 to 6 and analyzed for P and creatinine. Daily P intake was greater (P < 0.001) for the high-P diet (32.0 ± 0.6 g) than the low-P diet (17.5 ± 0.6 g), and the individual intake ranged from 13.3 to 38.4 g/d. Total fecal excretion of P was also greater (P < 0.001) for the high-P diet (30.3 ± 0.8 g/d) than the low-P diet (17.0 ± 0.8 g/d) whereas excretion in urine was less than 0.2 g/d on both diets. Using simple regression analysis, fecal endogenous P losses were estimated to be less than 10 mg/kg BW. Phosphorus retention was 1.6 ± 0.6 and 0.3 ± 0.6 g/d on the high- and low-P diets, respectively, but only that for the high-P diet was greater (P < 0.05) than 0 g/d. The proportion of Pi of total fecal P excretion was 100 ± 3% for the high-P diet and 87 ± 3% for the low-P diet (P = 0.005) and Pi increased linearly with P intake (y = 1.10x - 4.44; r(2) = 0.91; CV = 9.9%; P < 0.001). In conclusion, on this forage-only diet significant retention of P occurred at a daily P intake of 7.1 g/100 kg BW. Phosphorus was mainly excreted in feces and both total fecal P and Pi excretion had a strong relationship to P intake. More than 80% of total P appeared to be soluble. Fecal endogenous P losses were similar to those described previously in growing horses.

show abstract

“…Broken rice has been widely used as a high-energy horse feed in Australia for many years and ground rice hulls have † E-mail: domenico.bergero@unito.it Animal (2014) Determination of apparent digestibility in horses by in vivo trial based on total collection of feces is still considered the best method due to its accuracy (De Marco et al, 2012). Nevertheless, it does have its limits, concerning the direct use of animals, the planning of the experimental procedure and considerable experimentation costs.…”

Section: Introductionmentioning

confidence: 99%

“…Rice-based pellets incorporating rice pollard and broken rice are fed to horses, and the energy values are based on determinations using rice by-products in pig, ruminant and poultry feeds (Farrell and Warren, 1982). McCarthy et al (1989) pointed out that rice milling by-products are high in energy for horses and that broken rice is highly digestible.Broken rice has been widely used as a high-energy horse feed in Australia for many years and ground rice hulls have † E-mail: domenico.bergero@unito.it Animal (2014) Determination of apparent digestibility in horses by in vivo trial based on total collection of feces is still considered the best method due to its accuracy (De Marco et al, 2012). Nevertheless, it does have its limits, concerning the direct use of animals, the planning of the experimental procedure and considerable experimentation costs.…”

mentioning

confidence: 99%

Apparent digestibility of broken rice in horses using in vivo and in vitro methods

Marco

Peiretti

Miraglia

et al. 2014

Animal

Self Cite

View full text Add to dashboard Cite

The aim of this study was to assess the apparent digestibility of broken rice using total collection of feces and the pepsin-cellulase in vitro technique to provide updated and more accurate digestion coefficients for this by-product when fed to horses. The in vivo digestibility trial was consecutively performed, using five adult geldings, weighing 555.6 kg on average. First, hay was given as the only feedstuff, while second, the experimental diet consisted of the same hay plus broken rice at a forage-to-concentrate ratio of 70/30 (on dry matter (DM) basis). Feces were collected over 6 days preceded by a 14-day adaptation period. The digestibility trial was carried out to determine the digestion coefficients for DM, organic matter (OM), CP and gross energy in both diets, while apparent digestion coefficients for the same parameters were calculated for broken rice alone, using the difference between the two sets of results. At the same time, an in vitro trial was carried out using pepsin-cellulase technique on the samples of hay and broken rice tested during the in vivo trial. As expected, supplementation with broken rice increased digestibility according to all the parameters used. The high OM digestion coefficients of broken rice were confirmed both by the calculated in vivo method and by the predicted results of pepsin-cellulase technique (92.6% and 87.1%, respectively), underlining the high digestibility of this by-product when fed to horses.Keywords: horse, broken rice, apparent digestibility, pepsin-cellulase technique ImplicationsMixed feed incorporating broken rice is used for horses but estimates of its nutritive value are based on determinations using rice by-products in pig, ruminant and poultry feeds. The importance and the novelty of this experiment is that similar studies carried out on horses in Europe are not available in the scientific literature, but only dated works performed in Australia with different rice cultivars on different livestock species. The present study updates the chemical composition and digestion coefficients of Italian broken rice for horses. Our results should enable companies to produce well-rationed mixed feeds for horses. IntroductionRice (Oryza sativa) is the seed of an annual plant belonging to the Gramineae family, one of the most widespread grain crops in the world. Indeed, in 2010, rice was the grain with the second-highest worldwide production, behind maize. Italy produces large amounts of rice, especially in the North. Consequently, many by-products of the rice cleaning process are available for livestock use. Among these, broken rice separated out after the polishing stage has the same chemical composition as polished rice; even though the quantities available are not very high, this by-product is a palatable, energy-rich and easily utilized feed. Another characteristic of this by-product is that it has a low-protein content but of high quality: its protein is richer in lysine than that of other major cereals.In literature, studies on broken rice digestibility in h...

show abstract

Apparent digestibility of wheat bran and extruded flax in horses determined from the total collection of feces and acid-insoluble ash as an internal marker

Cited by 12 publications

References 21 publications

Effect of Linseed (Linum usitatissimum) Groats-Based Mixed Feed Supplements on Diet Nutrient Digestibility and Blood Parameters of Horses

Effect of Linseed (Linum usitatissimum) Groats-Based Mixed Feed Supplements on Diet Nutrient Digestibility and Blood Parameters of Horses

Phosphorus balance and fecal losses in growing Standardbred horses in training fed forage-only diets1

Apparent digestibility of broken rice in horses using in vivo and in vitro methods

Contact Info

Product

Resources

About