Legume-Induced Frothy Bloat in Tropical Cattle: Pathophysiology, Consequences, and Preventative Measures

Year : 2026 | Volume : 15 | Issue : 02 | Page : 38 59
By

Md. Emran Hossain,

ASM Lutful Ahasan,

  1. Professor, Department of Animal Science and Nutrition, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram, Bangladesh
  2. Professor, Department of Anatomy and Histology, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram, Bangladesh

Abstract

Legume-induced bloat in tropical cattle is a complex and significant health challenge that affects livestock productivity and welfare. This review aims to elucidate the multifaceted causes of bloat associated with the consumption of leguminous forages, highlighting both the physiological mechanisms and environmental factors that contribute to this condition. Key factors include the high soluble protein content of legumes, rapid fermentation rates in the rumen, and the formation of stable foam, which obstructs normal gas expulsion. Additionally, environmental conditions, such as rainfall and pasture management practices, exacerbate the risk of bloat in grazing systems. The consequences of bloat are profound, leading to reduced feed intake, impaired nutrient absorption, and, in severe cases, death. The economic implications for farmers are substantial, resulting in increased veterinary costs and decreased milk and meat production. To mitigate the risk of bloat, this review discusses various preventative measures that can be implemented in tropical cattle management systems. These include strategic feeding practices, such as providing dry forages before grazing on legumes, incorporating a balanced mix of grasses and legumes, and utilizing feed additives like poloxalene and ionophores. Furthermore, grazing management strategies, including rotational grazing and monitoring pasture conditions, play a crucial role in reducing bloat incidence. By understanding the underlying causes and consequences of legume-induced bloat, as well as implementing effective preventative strategies, cattle producers can enhance animal welfare and improve the sustainability of livestock production systems in tropical environments. This review serves as a comprehensive resource for researchers, veterinarians, and livestock managers seeking to address the challenges posed by legume-induced bloat in cattle

Keywords: Bloat, causes, cattle, consequences, legume, preventive measures

[This article belongs to Research and Reviews : Journal of Veterinary Science and Technology ]

How to cite this article: Md. Emran Hossain, ASM Lutful Ahasan. Legume-Induced Frothy Bloat in Tropical Cattle: Pathophysiology, Consequences, and Preventative Measures. Research and Reviews : Journal of Veterinary Science and Technology. 2026; 15(02):38-59.
How to cite this URL: Md. Emran Hossain, ASM Lutful Ahasan. Legume-Induced Frothy Bloat in Tropical Cattle: Pathophysiology, Consequences, and Preventative Measures. Research and Reviews : Journal of Veterinary Science and Technology. 2026; 15(02):38-59. Available from: https://journals.stmjournals.com/rrjovst/article=2026/view=257325

References

  1. Clarke RT, Reid CS. Foamy bloat of cattle. A review. Journal of dairy science. 1974 Jul 1;57(7):753-85.
  2. McMahon LR, McAllister TA, Berg BP, Majak W, Acharya SN, Popp JD, Coulman BE, Wang Y, Cheng KJ. A review of the effects of forage condensed tannins on ruminal fermentation and bloat in grazing cattle. Canadian Journal of Plant Science. 2000 Jul 1;80(3):469-85.
  3. Thompson DJ, Brooke BM, Garland GJ, Hall JW, Majak W. Effect of stage of growth of alfalfa on the incidence of bloat in cattle. Can J Anim Sci. 2000;80(4):725–727. doi: 4141/A00-065.
  4. Majak W, Hall JW, McAllister TA. Practical measures for reducing risk of alfalfa bloat in cattle. J Range Manag. 2001;54(4). doi: 2307/4003120.
  5. Berg BP, Majak W, McAllister TA, Hall JW, McCartney D, Coulman BE, Goplen BP, Acharya SN, Tait RM, Cheng KJ. Bloat in cattle grazing alfalfa cultivars selected for a low initial rate of digestion: A review. Canadian Journal of Plant Science. 2000 Jul 1;80(3):493-502.
  6. Berg BP, Majak W, McAllister TA, Hall JW, McCartney D, Coulman BE, Goplen BP, Acharya SN, Tait RM, Cheng KJ. Bloat in cattle grazing alfalfa cultivars selected for a low initial rate of digestion: A review. Canadian Journal of Plant Science. 2000 Jul 1;80(3):493-502.
  7. Bretschneider G, Santini FJ, Fay JP, Faverin C. Effects of maize silage supplementation before lucerne grazing on the occurrence of bloat in cattle. N Z J Agric Res. 2001;44(4):241–251. doi: 1080/00288233.2001.9513481.
  8. Saha D, Hossain MA, Juyena NS. Clinical management and control of clinical and induced bloat in cattle. 2006;23(2). doi: 5555/20083000197.
  9. Yu MA, Damodaran S. Kinetics of protein foam destabilization: evaluation of a method using bovine serum albumin. Journal of Agricultural and Food Chemistry. 1991 Sep;39(9):1555-62.
  10. Jones WT, Lyttleton JW, Clarke RTJ. Bloat in cattle: XXXIII. The soluble proteins of legume forages in New Zealand, and their relationship to bloat. N Z J Agric Res. 1970;13(1):149–156. doi: 1080/00288233.1970.10421204.
  11. Jones WT, Anderson LB, Ross MD. Bloat in cattle: XXXIX. Detection of protein precipitants (flavolans) in legumes. N Z J Agric Res. 1973;16(3):441–446. doi: 1080/00288233.1973.10421128.
  12. Clarke RTJ, Jones WT, Reid CSW. Bloat in cattle: XLI. Proteins of saliva as possible genetic markers in breeding programmes to reduce bloat susceptibility in cattle. N Z J Agric Res. 1974;17(4):411–415. doi: 1080/00288233.1974.10421026.
  13. Mangan JL. Bloat in cattle: XI. The foaming properties of proteins, saponins, and rumen liquor. N Z J Agric Res. doi: 10.1080/00288233.1959.10427123.
  14. Majak W, Hall JW, McCaughey WP. Pasture management strategies for reducing the risk of legume bloat in cattle. J Anim Sci. 1995;73(5):1493–1498. doi: 2527/1995.7351493x.
  15. Jackson HD, DeVault RL, McNairy SA, Hatcher BW, Goetsch GD. Bloat in cattle. Its relationship to a respiratory inhibitor in Ladino clover and to phosphorus fertility of the soil. J Anim Sci. 1962;21(2):235–240. doi: 2527/jas1962.212235x.
  16. Meyer RM, Bartley EE, Deyoe CW. Bloat in cattle. VII. Relation to amino acid composition of alfalfa as affected by maturity. J Dairy Sci. 1965;48(2):213–216. doi: 3168/jds.S0022-0302(65)88198-X.
  17. Hall JW, Majak W, Van Ryswyk AL, Kalnin CM, Howarth RE. The relationship of rumen cations and soluble protein with predisposition of cattle to alfalfa bloat. Can J Anim Sci. 1988;68(2):431–437. doi: 4141/cjas88-048.
  18. Hall JW, Majak W, Williams RJ, Howarth RE. Effect of daily weather conditions on bloat in cattle fed fresh alfalfa. Can J Anim Sci. 1984;64(4):943–950. doi: 4141/cjas84-106.
  19. Wolfe EC, Lazenby A. Bloat incidence and liveweight gain in beef cattle on pastures containing different proportions of white clover (Trifolium repens). Aust J Exp Agric. 1972;12(55):119–125. doi: 1071/EA9720119.
  20. Hall JW, Majak W. Effect of time of grazing or cutting and feeding on the incidence of alfalfa bloat in cattle. Can J Anim Sci. 1995;75(2):271–273. doi: 4141/cjas95-041.
  21. Lowe LB. Prevention of bloat in pastured cattle. Bovine Pract. 1998:27–30. doi: 21423/bovine-vol1998no32.1p27–30.
  22. Bretschneider G. An update on frothy bloat in cattle. 2010;42(3). doi: 5555/20113044590.
  23. Teles Coutinho L, Augusto Bastos Afonso da Silva J, de Azevedo Costa N, Lopes de Mendonça C, Antônio da Rocha Faria P, Castro Soares P. Therapeutics evaluation in cases of frothy bloat in cattle. Ciênc. anim. bras.(Impr.). 2009:288-93.
  24. Majak W, Garland GJ, Lysyk TJ. The effect of feeding hay before fresh alfalfa on the occurrence of frothy bloat in cattle. Can J Anim Sci. 2008;88(1):29–31. doi: 4141/CJAS07073.
  25. Bartley EE, Nagaraja TG. Effect of Lasalocid or Monensin on feedlot (grain) bloat in cattle. Kansas Agricultural Experiment Station Research Reports. 1983 Jan 1;1(1).
  26. Bartley EE, Nagaraja TG, Pressman ES, Dayton AD, Katz MP, Fina LR. Effects of lasalocid or monensin on legume or grain (feedlot) bloat. J Anim Sci. 1983;56(6):1400–1406. doi: 2527/jas1983.5661400x.
  27. Hoshino S, Wakita M, Kobayashi Y. Effects of salinomycin on grain bloat in fattening Japanese Black cattle. J Anim Physiol Anim Nutr (Berl). 1987;57(1–5):123–129. doi: 1111/j.1439-0396.1987.tb00018.x.
  28. Ayre-Smith RA. Pasture bloat in cattle. Aust Vet J. 1971;47(4). doi: 1111/j.1751-0813.1971.
    tb02130.x.
  29. Bretschneider G, Peralta M, Santini FJ, Fay JP, Faverin C. Influence of corn silage supplementation before alfalfa grazing on ruminal environment in relation to the occurrence of frothy bloat in cattle. Anim Feed Sci Technol. 2007;136(1–2):23–37. doi: 1016/j.anifeedsci.2006.08.019.
  30. Wang Y, Berg BP, Barbieri LR, Veira DM, McAllister TA. Comparison of alfalfa and mixed alfalfa-sainfoin pastures for grazing cattle: Effects on incidence of bloat, ruminal fermentation, and feed intake. Can J Anim Sci. 2006;86(3):383–392. doi: 4141/A06-009.
  31. Katz MP, Nagaraja TG, Fina LR. Ruminal changes in monensin- and lasalocid-fed cattle grazing bloat-provocative alfalfa pasture. J Anim Sci. 1986;63(4):1246–1257. doi: 2527/jas1986.6341246x.
  32. Gadberry S, Lalman D, White F, Linneen S, Beck P. Meta-analysis of the effects of monensin on growth and bloat of cattle on pasture. Transl Anim Sci. 2022;6(2). doi: 1093/tas/txac031.
  33. Dalto AG, Bandarra PM, Pedroso PM, Guagnini FD, Leal JD, Raymundo DL, Driemeier D. Timpanismo espumoso em bovinos leiteiros em pastagens de Trifolium spp.(Leg. Caesalpinoideae). Pesquisa Veterinária Brasileira. 2009 May;29(5):401-3.
  34. Waghorn GC. Bloat in cattle. 47. Relationships between intra-ruminal pressure, distension, and the volume of gas used to simulate bloat in cows. N Z J Agric Res. 1991;34(2):213–220. doi: 1080/
    00288233.1991.10423362.
  35. Paisley SI, Horn GW. Effect of ionophore on rumen characteristics, gas production, and occurrence of bloat in cattle grazing winter wheat pasture. 1998. Available from: http://dasnr54.dasnr.okstate.
    edu:8080/beefextension2018/reports/1998/1998-3%20Paisley%20Research%20Report.pdf
  36. Kleiber M, Cole HH, Mead SW. Bloat in cattle and composition of rumen gases. J Dairy Sci. 1943;26(10):929–933. doi: 3168/jds.S0022-0302(43)92788-2.
  37. Majak W, Howarth RE, Cheng KJ, Hall JW. Rumen conditions that predispose cattle to pasture bloat. J Dairy Sci. 1983;66(8):1683–1688. doi: 3168/jds.S0022-0302(83)81992-4.
  38. Davis JD, Essig HW. Comparison of three bloat-preventing compounds for cattle grazing clover. Can J Anim Sci. 1972;52(2):329–335. doi: 4141/cjas72-037.
  39. Meyer RM, Bartley EE, Morrill JL, Stewart WE. Salivation in cattle. I. Feed and animal factors affecting salivation and its relation to bloat. J Dairy Sci. 1964;47(12):1339–1345. doi: 3168/jds.S0022-0302(64)88915-3.
  40. Bartley EE, Yadava IS. Bloat in cattle. IV. The role of bovine saliva, plant mucilages, and animal mucins. J Anim Sci. 1961;20(3):648–653. doi: 2527/jas1961.203648x.
  41. Jones WT, Lyttleton JW. Bloat in cattle: XXXVII. The foaming properties of bovine salivary secretions and protozoal proteins. N Z J Agric Res. 1972;15(3):506–511. doi: 1080/00288233.1972.10430542.
  42. Johns AT, McDowall FH, McGillivray WA. Bloat in cattle: XII. The effect of orally administered penicillin on body weight of lact ating cows, on milk production, and on production and composition of fat. New Zealand Journal of Agricultural Research. 1959 Feb;2(1):62-71.
  43. Wright DE. Bloat in cattle. N Z J Agric Res. 1961;4(3–4):203–215. doi: 1080/00288233.1961.10420366.
  44. Mangan JL, Johns AT, Bailey RW. Bloat in cattle. N Z J Agric Res. 1959;2(2):342–354. doi: 1080/00288233.1959.10420322.
  45. Sakauchi R, Hoshino S. Microbial characteristics of ruminal fluid from feedlot bloat beef cattle. J Gen Appl Microbiol. 1981;27(2):145–155. doi: 2323/jgam.27.145.
  46. Clarke RTJ, Hungate RE. Bloat in cattle: XXXV. Microbial activities in the reticulo-rumens of cows differently susceptible to legume bloat. N Z J Agric Res. 1971;14(1):108–121. doi: 1080/00288233.1971.10421307.
  47. Azad E, Derakhshani H, Forster RJ, Gruninger RJ, Acharya S, McAllister TA, Khafipour E. Characterization of the rumen and fecal microbiome in bloated and non-bloated cattle grazing alfalfa pastures and subjected to bloat prevention strategies. Scientific reports. 2019 Mar 12;9(1):4272.
  48. Cheng KJ, McAllister TA, Popp JD, Hristov AN, Mir Z, Shin HT. A review of bloat in feedlot cattle. J Anim Sci. 1998;76(1):299–308. doi: 2527/1998.761299x.
  49. Katz MP, Bartley EE, Pressman ES, Nagaraja TG. Effect of Rumensin on legume bloat in cattle. Kansas Agric Exp Stn Res Rep. 1982;(1):52–53. doi: 4148/2378-5977.2560.
  50. Khatiwada B. Rejuvenation of depleted pasture using bloat-free legumes for high performance cattle grazing. Available from: https://search.proquest.com/openview/da5852bf597ef9304ca87c49a5352149/1
  51. Bartley EE, Bassette R. Bloat in cattle. III. Composition of foam in legume bloat. J Dairy Sci. 1961;44(7):1365–1366. doi: 10.3168/jds.S0022-0302(61)89890-1.
Regular Issue Subscription Review Article
Volume 15
Issue 02
Received 20/05/2026
Accepted 04/07/2026
Published 06/07/2026
Publication Time 47 Days

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