Effect of Crude Protein Level and Limestone Buffer in Diets Fed at Two Levels of Intake on Rumen pH, Ammonia-Nitrogen, Buffering Capacity and Volatile Fatty Acid Concentration of Cattle

Haaland, G. L.; Tyrrell, H.F.; Moe, P.W.; Wheeler, William E.

doi:10.2527/jas1982.554943x

Cited by 51 publications

(33 citation statements)

References 15 publications

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“…Under practical feeding conditions, Nadeau et al (2000) found significantly lower scores of squamous gastric lesions in horses fed an alfalfa hay/grain diet compared to horses fed a brome hay diet. The authors concluded high amounts of protein and the quality of protein itself may have buffering effects in the stomach as previously seen in cattle (Haaland et al 1982). This could be the reason, why in our study lesion scores of the greater curvature of the squamous mucosa decreased after feeding alfalfa chaff.…”

Section: Discussionmentioning

confidence: 70%

Effects of alfalfa chaff on the gastric mucosa in adult horses

Vondran¹,

Venner²,

Coenen³

et al. 2017

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Summary: Feeding alfalfa hay is often recommended because of its buffering properties associated with substances, like protein and calcium, to prevent lesions. However, the particle size of the alfalfa preparations seems to have an influence on gastric mucosa in weanlings. We hypothesized that feeding alfalfa chaff with harsh particles would negatively impact glandular gastric mucosa in adult horses under maintenance conditions. The study was performed as a cross-over 2 × 2 Latin square design with 16-days washout intervals over 8 weeks. Six geldings (19 to 21 years of age) were kept in individual boxes (10.85 m 2 ). The horses were fed 1.5 kg per 100 kg BW of alfalfa chaff or grass hay, offered twice a day. Horses were subjected to a gastroscopy immediately before the feeding period (T= 0), after the first feeding period of 12 days (T =12), after the first washout period (T = 28), after the second feeding period of 12 days (T = 40) and after the second washout period (T = 56). When horses were fed alfalfa chaff the median score of the antrum raised from 0 to 2 (p = 0.07). And after the washout period the median score of the antrum decreased to 0.5 (p = 0.04). In conclusion feeding alfalfa chaff induced glandular mucosal lesions at the antrum. Lesions of the antrum induced by feeding alfalfa chaff seem to be reversible and to heal within 16 days. Keywords: alfalfa, particle size, gastric lesions, gastroscopy, EGGD, nutrition Citation: Vondran S., Venner M. , Coenen M., Vervuert I. (2017) Effects of alfalfa chaff on the gastric mucosa in adult horses. Pferdeheilkunde 33, 66-71;

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Section: Discussionmentioning

confidence: 70%

Effects of alfalfa chaff on the gastric mucosa in adult horses

Vondran¹,

Venner²,

Coenen³

et al. 2017

PHK

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“…High levels of starch entering the hindgut environments have been seen to elicit detrimental changes to the gastrointestinal tract (Garner et al, 1975) Diets high in crude protein (14 to 17 %) have been seen to increase rumen buffering capacity (Haaland et al, 1982), indicating that protein in food may act as a buffer against acidity. The macromolecular proteins are thought to be responsible for increasing the protective power of the mucus from penetration of hydrogen ions into the surrounding tissues (Holma and Hegg, 1989).…”

Section: Discussionmentioning

confidence: 99%

In vitro fermentation of different ratios of alfalfa and starch or inulin incubated with an equine faecal inoculum

et al. 2018

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Cite this article as: A. Garber, P.M. Hastie, I. Handel and M.D. Murray, In vitro fermentation of different ratios of alfalfa and starch or inulin incubated with an equine faecal inoculum, Livestock Science, http://dx.doi.org/10. 1016/j.livsci.2017.05.002 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. a further set of bottles containing identical ratios of S/I:CA/GA were also prepared, with the exception that the alfalfa received a simulated foregut digestion treatment (SFD) as prior to incubation. Total gas production increased (P<0.05) as the ratio of S/I to alfalfa increased.Total gas production was lower in bottles containing SFD-treated alfalfa (P<0.001). Dry matter loss decreased proportionately with increasing level of alfalfa substitution of S/I (P<0.001). Values for pH were lower in bottles containing S or I, with pH values in bottles 2 containing S alone falling to almost 6 and those with I dropping to pH 5 and under.However, the substitution of S or I with 40 percent alfalfa produced pH values above 6.7, which is within physiological levels encountered in the large intestine of the horse.Consequently, there appears to be considerable potential to buffer the deleterious effects of high-starch/fructan diets with the substitution of these substrates with high-temperature dried alfalfa.

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“…The beneficial effect of feeding alfalfa hay appeared to be related to an increase in gastric pH above 4. This is due to the buffering properties of calcium and protein as well as the higher production of acetate, propionate and isovaleriate in the stomach content (Haaland et al 1982, Nadeau et al 2000, Lybbert 2007). …”

Section: Introductionmentioning

confidence: 99%

Effects of feeding different roughage-based diets on gastric mucosa after weaning in warmblood foals

Fedtke¹,

Pfaff²,

Volquardsen³

et al. 2015

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Summary: Equine gastric mucosal ulcer syndrome (EGUS) is a well-known disease entity in equine medicine. Many studies have evaluated this disorder, by investigating prevalence, etiology and treatment. The effect of feeding different roughage-based diets to weanling foals has not been examined to date. In this study, 89 weanlings aged between 172 -174 days were randomly allocated to two feeding trials. Trial 1 consisted of three groups: Group 1 alfalfa chaff (group 1), hay (Group 2) and Group 3: a total mixed ration (TMR). There were 20 foals in each group. Trial 2 consisted of two groups: Group 4: molassed alfalfa chaff and Group 5: hay. There were 19 foals in each group. Gastroscopic examination was performed immediately before weaning and after a feeding period of 15 -16 days. In the first part of the study (or trial 1) the prevalence of gastric mucosal lesion was 44 % with a low severity score (median 0; 25/75 % percentile: 0/0) before weaning. There was a significant increase in the number of lesions in the Pars nonglandularis of the Curvatura minor in all groups of trial 1 post weaning. The group 1 (alfalfa chaff) exhibited significantly more mucosal lesions at the pylorus compared to group 2 (hay) and 3 (TMR). Significant healing of gastric ulcers was seen in the hay and TMR group. Results of the second part of the study (trial 2) indicated a prevalence of 86 % before weaning increasing to 97 % after the feeding period. There was an increase in the number of lesions at the Curvatura major and minor of both Pars nonglandularis and Pars glandularis in both groups (hay and alfalfa chaff). A significantly higher number of lesions at the pylorus were seen in the molassed alfalfa chaff group only. Despite the high number and severity score of the lesions none of the weanlings showed clinical signs associated with a gastric disorder.Keywords: EGUS / feeding / alfalfa chaff / weaning / foal / nutrition Citation: Fedtke A., Pfaff M., Volquardsen J., Venner M., Vervuert I. (2015) Effects of feeding different roughage-based diets on gastric mucosa after weaning in warmblood foals. Pferdeheilkunde 31, 596-602

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Effect of Crude Protein Level and Limestone Buffer in Diets Fed at Two Levels of Intake on Rumen pH, Ammonia-Nitrogen, Buffering Capacity and Volatile Fatty Acid Concentration of Cattle

Cited by 51 publications

References 15 publications

Effects of alfalfa chaff on the gastric mucosa in adult horses

Effects of alfalfa chaff on the gastric mucosa in adult horses

In vitro fermentation of different ratios of alfalfa and starch or inulin incubated with an equine faecal inoculum

Effects of feeding different roughage-based diets on gastric mucosa after weaning in warmblood foals

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