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In vitro hydrolysis of urea-formaldehyde complexes made with or without molasses in the presence of phosphoric acid

Published online by Cambridge University Press:  27 March 2009

D. Lall ,
O. P. Lohan ,
H. P. S. Makkar  and
S. S. Negi
D. Lall
Affiliation:
Indian Veterinary Research Institute, Regional Station, Palampur 176 061 H.P., India
O. P. Lohan
Affiliation:
Indian Veterinary Research Institute, Regional Station, Palampur 176 061 H.P., India
H. P. S. Makkar
Affiliation:
Indian Veterinary Research Institute, Regional Station, Palampur 176 061 H.P., India
S. S. Negi
Affiliation:
Indian Veterinary Research Institute, Regional Station, Palampur 176 061 H.P., India
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Extract

The high activity of rumen urease is a major limiting factor in the usefulness of urea as a protein replacement supplement in ruminant diets (Bloomfield, Garner & Muhrer, 1960). The efficiency of urea utilization can be increased by decreasing the activity of rumen urease or by modification of urea in the products which are slow ammoniareleasing (Helmer & Bartley, 1971). An arbitrary formaldehyde treatment of urea was observed to lower the hydrolysis in the intact rumen (Pal & Negi, 1977). In a systematic study carried out in our laboratory a series of urea formaldehyde complexes (UFC) was prepared and their in vitro hydrolysis studied (Lall et al.1980; Makkar et al. 1981). Phosphoric acid is known to catalyse the reaction between aldehyde and urea. In the present study the complexes of urea and formaldehyde (UFC) and urea, formaldehyde and molasses (UFMC) in the presence of a catalyst (phosphoric acid) were prepared and their in vitro ammonia production is presented.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 98 , Issue 3 , June 1982 , pp. 687 - 688
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

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