Articles by other authors
PSSM, Polysaccharide Storage Myopathy A condition causing sore muscles and tying up.
Resistance Training and the Effect of Feeding Carbohydrates and Oils on Healthy Horses and Horses with Polysaccharide Storage Myopathy PhD Thesis Lisa Anne Borgia Hay with high WSC content was inappropriate for horses with PSSM
Estimated prevalence of the Type 1 Polysaccharide Storage Myopathy mutation in selected North American and European breeds M. E. McCue, S. M. Andersom, S. J. Valberg, R. J. Piercy , S. Z. Barakzai , M. M. Binns , O. Distl, M. C. T. Penedo, M. L. Wagner and J. R. Mickelson. The GYS1 mutation was detected in 11 breeds, including, in order of increasing allele frequency, Shires, Morgans, Appaloosas, Quarter Horses, Paints, Exmoor Ponies, Saxon-Thuringian Coldbloods, South German Coldbloods, Belgians, Rhenish German Coldbloods and Percherons.
Articles about forage
High-sugar grasses A.J. Parsons, J.S. Rowarthl and S. Rasmussen CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources 2011 6, No. 046 Some perspectives from grass researchers as to why continuing to increase WSC content of grass is a good thing for cows.
How to Maximize Energy Content in Forage Grasses Dr. S. Ray Smith and Kelly Prince A forage researchers perspective. High NSC are good for cows. Some data included comparing species grown in the same plot. We want the lower ones.
Seasonal and Diurnal Variation in WSC Concentrations of Repeatedly Defoliated Red and White Clovers in Central Kentucky Isabelle A.Kagan et al Why clover is bad for horses with high insulin levels.
Glucose and insulin response of horses grazing alfalfa, perennial cool-season grass, and teff across seasons ML DeBoer, MR Hathaway, KJ Kuhle… - JEVS 68 (2018) 33-38, ML DeBoer, MR Hathaway, KJ Kuhle Teff is a better choice for grazing horses with insulin dysregulation than cool season grasses.
Seasonal Trends in Nonstructural Carbohydrates in Cool- and Warm-season Grasses. K B. Jensen, P Harrison, N. J Chatterton, B. S Bushman, and J. E Creech. Crop science, vol. 54, 2014 In Utah, the highest season ave NSC perennial ryegrass = 22.3%dm, timothy second highest at 19%. Max NSC at one sampling date= ryegrass 32.4%dm in June, Max fructan ryegrass =19% dm June. Max season ave sugar timothy =10.6%, max at one sampling date timothy 12.5% in Oct
In Vitro Gas Production from Batch Cultures of Stomach and Hindgut Digesta of Horses Adapted to a Prebiotic Dose of Fructooligosaccharides and Inulin M Bachmann, M Glatter, M Bochni, M Wensch-DorendorfaJörg M.Greef, G Breve, A Zeyner. Parts of FOS and inulin (found in dandelions and other broad leaf weeds) are fermented in the stomach. Elevated fermentation may considerably impact stomach health. If you are worried about ulcers, don’t let your horse eat dandelions. see Founder Fodder Weeds
Articles about laminitis and insulin
Histopathology of insulin-induced laminitis in ponies K. E. ASPLIN, J. C. PATTERSON-KANE†, M. N. SILLENCE, C. C. POLLITT and C. M. MCGOWAN This looks very different than the grain overload kind of laminitis. The lamina fork and grow like crazy. This can happen very slowly without detachment of the basement membrane.
Correlation of plasma insulin concentration with laminitis score in a field study of equine Cushing's disease and equine metabolic syndrome,DM Walsh, CM McGowan, T McGowan… - JEVS Vol 29 (2), 2009 A small study showing correlation between insulin and lameness, and that a program of diet and exercise works.
Effects of age and diet on glucose and insulin dynamics in the horse J. L. RAPSON, H. C. SCHOTT , B. D. NIELSEN, L. J. McCUTCHEON, P. A. HARRIS and R. J. GEOR Insulin response to carbohydrate increase with age of horses.
Effect of dietary fructans and dexamethasone administration on the insulin response of ponies predisposed to laminitis S R. Bailey, N J. Menzies-Gow, P A. Harris, J L. Habershon-Butcher, C Crawford, Y Berhane, R C. Boston, J Elliott. In ponies predisposed to laminitis, fructan and dexamethasone caused a rise in insulin.
Histochemical and Histomorphometrical Studies on the Digital Cushion of Heifers and Dairy Cows with Claw Horn Lesions C İzci, İlhami Çelik, Mu Erol and E Gökşahin , Concepts in Dairy Sci. 2019 Cows with Claw Horn Lesions (signs of laminitis) have changes to the digital cushion. They recommend avoiding laminitis by changing the diet. We need this study done on horses, too.
Chromium propionate increases insulin sensitivity in horses following oral and intravenous carbohydrate administration J W Spears, K E Lloyd, P Siciliano, S Pratt-Phillips, E W Goertzen, S J McLeod, J Moore, Kr Krafka, J Hyda, W Rounds. Journal of Animal Science. Results of this study indicate that 2 or 4 mg Cr/d from Cr Prop increased insulin sensitivity in adult horses following oral carbohydrate consumption.
Weight loss is linearly associated with a reduction of the insulin response to an oral glucose test in Icelandic horses J Delarocque , F Frers, K Huber, K Feige, and T Warnken, BMC Veterinary Research (2020) 16:151
Articles about PPID
Effects of Pituitary Pars Intermedia Dysfunction and Prascend® Treatment on Endocrine and Immune Function, A B. Miller,H Bush,V Barker,Steven Grubbs,A Adams. ACVIM 2019 Basal ACTH appears to be the better indicator for determining successful responses to PRASCEND. Total cortisol does not appear to contribute to any potential changes in immune function caused by PPID
Association between hyperinsulinaemia and laminitis severity at the time of pituitary pars intermedia dysfunction diagnosis E. M. Tadros, J. G. Fowlie, K. R. Refsal, J. Marteniuk,H. C. Schott, EVJ Vol 51(1) Jan 2019 While owners reported laminitis in 37% of animals, 76% were laminitic based on study criteria. We should be doing better in detecting laminitis in milder form before the damage is extensive.
The Probability of Clinical Signs in Hyperinsulinemic Horses With Pituitary Pars Intermedia Dysfunction ACVIM 2019 conference Steve T. Grubbs ; Dwana Neal ; Thomas Keefe. A large study that showed the percent of horses with at least one symptom of metabolic disease that tested positive for PPID, high insulin, both or neither.
Dysregulation of cortisol metabolism in equine pituitary pars intermedia dysfunction Endocrinology; 2018 RA. Morgan, J A. Keen, N Homer, M Nixon, A McKinnon-Garvin, J Moses-Williams, S Davis, P Hadoke, B R. Walker. We infer that the ACTH excess may be compensatory and pituitary pathology and autonomous secretion may be a secondary rather than primary pathology. Introduces the concept of cortisol resistance.