1887

Abstract

SUMMARY: Experimental batches of hay were baled at different moisture contents, and the microbial and biochemical changes studied by sequential sampling. The type of hay obtained could, in general, be related to the initial moisture content, and to the temperature subsequently attained. Good hays (about 16 % moisture) heated little and contained a small but diverse microflora. Hays baled at about 25 % moisture heated to about 45° and moulded, mainly with . Wet bales, with initial moisture contents of about 40 %, became very hot (60°-65°) and contained a large flora of thermophilic fungi, particularly spp., , and actinomycetes. During the initial heating period, which was correlated with a general rise in numbers of micro-organisms, particularly actinomycetes and bacteria, the acidity and volatile nitrogen increased. Later, when fungi and actinomycetes grew profusely, soluble sugars decreased rapidly and the pH value rose to 7.0 or above. Stacks of wet and dry hays were compared with bales made from the same hays. The wet stack developed a core of brown acid hay, containing many spore-forming bacteria but few fungi, surrounded by a layer of mouldy hay.

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1963-10-01
2021-08-05
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References

  1. Andersen A. A. 1958; New sampler for collection, sizing and enumeration of viable airborne particles.. J. Bact 76:471
    [Google Scholar]
  2. Brady C. J. 1960; Redistribution of nitrogen in grass and leguminous fodder plants during wilting and ensilage.. J. Sci. Fd Agric 11:276
    [Google Scholar]
  3. Brady C. J. 1961; The leaf protease of Trifolium repens.. Biochem. J 78:631
    [Google Scholar]
  4. Browne C. A. 1929; The spontaneous combustion of hay.. Tech. Bull. U.S. Dep. Agric141
    [Google Scholar]
  5. Bunce M. E. 1961; Humicola stellatus sp.nov., a thermophilic mould from hay.. Trans. Brit. mycol. Soc 44:372
    [Google Scholar]
  6. Cohn F. 1890; Ueber Warme-Erzeugung durch Schimmelpilze und Bakterien.. Jber. schles. Ges. vaterl. Kult 68:23
    [Google Scholar]
  7. Firth J. B., Stuckey R. E. 1947; Spontaneous combustion of hay.. Nature, Lond 159:624
    [Google Scholar]
  8. Gregory P. H., Lacey M. E. 1962; Isolation of thermophilic actinomycetes.. Nature, Lond 195:95
    [Google Scholar]
  9. Gregory P. H., Lacey M. E. 1963a; Mycological examination of dust from mouldy hay associated with farmer's lung disease.. J. gen. Microbiol 30:75
    [Google Scholar]
  10. Gregory P. H., Lacey M. E. 1963b; Liberation of spores from mouldy hay.. Trans. Brit, mycol. Soc 46:73
    [Google Scholar]
  11. Hoffman E. J. 1935; Oxidation and gas formation in the spontaneous heating of hay.. J. agric. Res 51:527
    [Google Scholar]
  12. Hoffman E. J., Bradshaw M. A. 1937; Losses of organic substance in the spontaneous heating of alfalfa hay.. J. agric. Res 54:159
    [Google Scholar]
  13. Howard B. H. 1959; The biochemistry of rumen protozoa. 2. Some carbohydrases in cell-free extracts of Dasytricha and Jsotricha.. Biochem. J 71:675
    [Google Scholar]
  14. Huggett A., Nixon D. A. 1957; Use of glucose oxidase, peroxidase and o-dianisidine in determination of blood and urinary glucose.. Lancet ii:273–368
    [Google Scholar]
  15. Ingram M., Barnes E. M. 1956; A simple modification of the deep shake tube for counting anaerobic bacteria.. Lab. Pract 5:145
    [Google Scholar]
  16. Keddie R. M. 1951; The enumeration of lactobacilli on grass and in silage.. Proc. Soc. appl. Bact 14:157
    [Google Scholar]
  17. Kemble A. R., Macpherson H. T. 1954; Liberation of amino acids in perennial rye grass during wilting.. Biochem. J 58:46
    [Google Scholar]
  18. Kemble A. R. 1956; Studies on the nitrogen metabolism of the ensilage process.. J. Sci. Fd Agric 7:125
    [Google Scholar]
  19. Long I. F. 1961; Micro-meteorology.. Rep. Rothamst. exp. Sta 1960:38
    [Google Scholar]
  20. McDonald P., Stirling A. C., Henderson A. R., Dewar W. A., Stark G. H., Davie W. G., Macpherson H. T., Reid A. M., Slater J. 1960; Studies on ensilage.. Tech. Bull. Edinb. Sch. Agric24
    [Google Scholar]
  21. Macpherson H. T. 1952; Changes in nitrogen distribution in crop conservation. I. The rate and extent of protein breakdown in ensilage.. J. Sci. Fd Agric 3:362
    [Google Scholar]
  22. Macpherson H. T., Wylam C. B., Ramstad S. 1957; Changes in carbohydrate, nitrogen and organic acid distribution in grass preserved with sodium metabisulphite.. J. Sci. Fd Agric 8:732
    [Google Scholar]
  23. Mansi W. 1958; Slide gel diffusion precipitin test.. Nature, Lond 181:1289
    [Google Scholar]
  24. May K. R. 1945; The cascade impactor: an instrument for sampling coarse aerosols.. J. sci. Instrum 22:187
    [Google Scholar]
  25. Miehe H. 1907 Die Selbsterhitzung des Heues. Eine biologische Studie Jena: Fischer;
    [Google Scholar]
  26. Miehe H. 1930; Über die Selbsterhitzung des Heues. (2Auf.). Arb. dtsch. LandwGes 196:1
    [Google Scholar]
  27. Nelson N. 1944; A photometric adaptation of the Somogyi method for the determination of glucose.. J. biol. Chem 153:375
    [Google Scholar]
  28. Pepys J., Riddell R. W., Citron K. M., Clayton Y. M. 1962; Precipitins against extracts of hay and moulds in the serum of patients with farmer's lung, aspergillosis, asthma and sarcoidosis.. Thorax 17:366
    [Google Scholar]
  29. Roethe H. E. 1937; Spontaneous heating and ignition of hay.. Agric. Engng St Joseph, Mich547
    [Google Scholar]
  30. Rosebury T. 1947 Experimental Air-borne Infection Baltimore: Williams & Wilkins;
    [Google Scholar]
  31. Somogyi M. 1952; Notes on sugar determination. J.. biol. Chem 195:19
    [Google Scholar]
  32. Stirling A. C. 1953; Lactobacilli and silage-making.. Proc. Soc. appl. Bact 16:27
    [Google Scholar]
  33. Trappe W. 1938; Modifikation der Jodzahlbestimmungsmethode nach H. P. Kaufmann für kleine und kleinste Fettmengen.. Biochem. Z 296:180
    [Google Scholar]
  34. Truninger E. 1929; Allgemeine Beobachtungen und Untersuchungen über Wesen, Ursache und Yerlauf der Selbsterhitzung und Selbstentzfindung von Dürrfutter.. Landw. Jb. Schweiz 43:278
    [Google Scholar]
  35. vander Schaaf D., Deijs W. B., Bosch S. 1954; Chemisch onderzoek van in verschillende mate gebroeid hooi.. Versl. Inst, landb. Onderz. Wageningen 148:
    [Google Scholar]
  36. Waite R., Gorrod A. R. N. 1959; The comprehensive analysis of grasses.. J. Sci. Fd Agric 10:317
    [Google Scholar]
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