Nutritional considerations in grass sickness, botulism, equine motor neuron disease and equine degenerative myeloencephalopathy

McGorum, Bruce; Pirie, R. S.; Keen, John

doi:10.1016/b978-0-7020-3422-0.00038-9

Cited by 1 publication

(2 citation statements)

References 61 publications

(41 reference statements)

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“…Botulism is associated with feeding poorly preserved haylage to horses 30 . We advised horsemen to discard haylage with visible mold growth, and haylage bales were fed within 3 days of opening 31,32 . In addition, vaccination against Clostridium botulinum type B was offered free of charge.…”

Section: Discussionmentioning

confidence: 99%

“…30 We advised horsemen to discard haylage with visible mold growth, and haylage bales were fed within 3 days of opening. 31,32 In addition, vaccination against Clostridium botulinum type B was offered free of charge. The hygienic quality of both hay and haylage can vary widely depending on composition and conditions during production, [33][34][35] and there are relatively few published data comparing measures of dust exposure of horses while eating different forages.…”

Section: Discussionmentioning

confidence: 99%

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Effects of low‐dust forages on dust exposure, airway cytology, and plasma omega‐3 concentrations in Thoroughbred racehorses: A randomized clinical trial

Olave

Ivester

Couëtil

et al. 2022

Veterinary Internal Medicne

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Background: Racehorses commonly develop evidence of mild asthma in response to dust exposure. Diets deficient in omega-3 polyunsaturated fatty acids (Ω-3) might exacerbate this response.Hypothesis: To compare dust exposure, bronchoalveolar lavage fluid (BALF) cytology, and plasma Ω-3 and specialized pro-resolving mediators (SPM) concentrations amongst racehorses fed dry hay, steamed hay, and haylage.Animals: Forty-three Thoroughbred racehorses.Methods: Prospective clinical trial. Horses were randomly assigned to be fed dry hay, steamed hay, or haylage for 6 weeks. Measures of exposure to dust in the breathing zone were obtained twice. At baseline, week-3, and week-6, BALF cytology was examined. Plasma lipid profiles and plasma SPM concentrations were examined at baseline and week 6. Generalized linear mixed models examined the effect of forage upon dust exposure, BALF cytology, Ω-3, and SPM concentrations.Results: Respirable dust was significantly higher for horses fed hay (least-square mean ± s.e.m. 0.081 ± 0.007 mg/m 3 ) when compared with steamed hay (0.056 ± 0.005 mg/m 3 , P = .01) or haylage (0.053 ± 0.005 mg/m 3 , P < .01). At week 6, BALF neutrophil proportions in horses eating haylage (3.0% ± 0.6%) were significantly lower compared with baseline (5.1 ± 0.7, P = .04) and horses eating hay (6.3% ± 0.8%, P < .01). Plasma eicosapentaenoic acid to arachidonic acid ratios were higher in horses eating haylage for 6 weeks (0.51 ± 0.07) when compared with baseline (0.34 ± 0.05, P < .01) and horses eating steamed (0.24 ± 0.02, P < .01) or dry hay (0.25 ± 0.03, P < .01).

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Section: Discussionmentioning

confidence: 99%