Abstract:
:Our experiments on metabolic processes in the rumen were performed on sixteen 5-month-old lambs divided into 4 groups (defaunated - D, totally refaunated - T, partially refaunated - P and intact - I). The absence or presence of protozoa in the rumen did not significantly affect the pH values. The greatest differences in NH3 concentration in the rumen before feeding were found between the T and D group (P<0.05). The animals of the T and I groups had higher NH3 concentrations than the D and P groups 1-5 hours after feeding (P<0.05 to P<0.001). Blood urea concentrations before and after feeding were significantly higher in the group I compared to the other groups (P<0.05 to P<0.001). Significant differences in the total nitrogen in rumen fluid were only found between groups D and I. The values of protozoan nitrogen in the rumen and their mutual relationship among the groups could be expressed by the following ratios: I>T>P>D. Proportions of the values of bacterial nitrogen followed in this order: D>P>T>I. The animals in group D had a significantly higher level of residual nitrogen than those in the other groups (P<0.05).
journal_name
Physiol Resjournal_title
Physiological researchauthors
Fejes J,Várady Jsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
117-23issue
2eissn
0862-8408issn
1802-9973journal_volume
45pub_type
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pub_type: 临床试验,杂志文章
doi:
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