Hostname: page-component-848d4c4894-cjp7w Total loading time: 0 Render date: 2024-06-22T17:31:13.440Z Has data issue: false hasContentIssue false
  • English
  • Français

Digestibility by ponies of oat straw treated with anhydrous ammonia

Published online by Cambridge University Press:  02 September 2010

P. Slagsvold ,
H. F. Hintz  and
H. F. Schryver
P. Slagsvold
Affiliation:
Veterinary College of Norway, Oslo
H. F. Hintz
Affiliation:
Equine Research Program, Cornell University, Ithaca, N. Y. 14853, USA
H. F. Schryver
Affiliation:
Equine Research Program, Cornell University, Ithaca, N. Y. 14853, USA
Get access

Abstract

The digestibility of oat straw treated with anhydrous ammonia was studied in four Shetland-type ponies in a 4×4 Latin square experiment. The experimental diets which contained soya bean oil meal, corn, sugarcane molasses, and 65% straw were: (1) straw treated with anhydrous ammonia, (2) untreated straw, (3) untreated straw plus urea, (4) untreated straw plus soya bean oil meal. Digestibility of the dry matter was 15% greater (P<0·01) and digestibility of cellulose 28% greater (P<0·01) in diets containing ammonia-treated straw than in those containing untreated straw. Ammonia treatment increased the nitrogen content of the straw by 50%, and nitrogen intake was 18% greater when the ponies were fed diet 1 than when fed diet 2. The nitrogen of the treated straw was utilized as efficiently as the nitrogen of the diet containing untreated straw supplemented with soya bean oil meal. However, the amount of nitrogen provided by the diet of ammonia-treated straw was not sufficient for nitrogen balance in the ponies. Ammonia treatment of oat straw did not affect the utilization of Ca, P, or Mg.

Type
Research Article
Information
Animal Production , Volume 28 , Issue 3 , June 1979 , pp. 347 - 352
Copyright
Copyright © British Society of Animal Science 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Anderson, D. C. and Ralston, A. T. 1973. Chemical treatment of ryegrass straw: In vitro dry matter digestibility and compositional changes. J. Anim. Sci. 37: 148–152.CrossRefGoogle Scholar
Capper, B. S., Morgan, D. J. and Parr, W. H. 1977. Alkali-treated roughages for feeding ruminants: A review. Trop. Sci. 19: 73–88.Google Scholar
Goering, H. D. and Van Soest, P. J. 1970. Forage fiber analysis. Agric. Handb. Forest Serv. US, No. 379.Google Scholar
Hintz, H. F. and Schryver, H. F. 1972. Nitrogen utilization in ponies. J. Anim. Sci. 34: 592–595.CrossRefGoogle ScholarPubMed
Hintz, H. F. and Schryver, H. F. 1973a. Some factors affecting digestion in the horse. Proc. Cornell Nutr. Conf., pp. 108–111.Google Scholar
Hintz, H. F. and Schryver, H. F. 1973b. Magnesium, calcium, and phosphorus metabolism in ponies fed varying levels of magnesium. J. Anim. Sci. 37: 927–930.CrossRefGoogle ScholarPubMed
Hvidsten, H. 1945. [Experiments with cellulose and pre-digested straw for horses.] Landbrukshøgsk. Foringsforsøk. Aas, Rep. No. 59.Google Scholar
Hvtdsten, H. 1958. [Studies on the effect of Beckman treated straw on yield and health condition of dairy cows.] Meld. Norg. Landbr Høgsk. 37: 1–13.Google Scholar
Jackson, M. G. 1977. The alkali treatment of straws. Anim. Feed Sci. Technol. 2: 105–130.CrossRefGoogle Scholar
Schryver, H. F., Craig, P. H. and Hintz, H. F. 1970. Calcium metabolism in ponies fed varying levels of calcium. J. Nutr. 100: 955–964.CrossRefGoogle ScholarPubMed
Schryver, H. F., Hintz, H. F. and Craig, P. H. 1971. Phosphorus metabolism in ponies fed varying levels of phosphorus. J. Nutrition 101: 1257–1264.CrossRefGoogle ScholarPubMed
Steel, R. G. D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw Hill Book Company, New York.Google Scholar
Waage Peterson, J. and Vestergaard-Thomsen, K. 1977. Effect on digestibility and nitrogen content of barley straw of different ammonia treatments. Anim. Feed Sci. Technol. 2: 131–142.CrossRefGoogle Scholar
Waiss, A. C., Guggolz, J., Kohler, G. O., Walker, H. G. and Garrett, W. N. 1972. Improving digestibility of straws for ruminant feed by aqueous ammonia. J. Anim. Sci. 35: 109–112.CrossRefGoogle Scholar
Westgaard, P. 1976a. [Straw as fodder.] Halmlutingslagenes landsforening 1956–1957, Oslo.Google Scholar
Westgaard, P. 1976b. [Ammonia treatment of straw.] Nofo, Oslo.Google Scholar
Williamson, G. 1941. The effect of Beckman's treatment of sodium hydroxide on the digestibility of feeding value of barley straw for horses. J. agric. Sci., Camb. 31: 488–499.CrossRefGoogle Scholar