Abstract:
This research was carried out to determine the in situ rumen degradability
characteristics of protected proteins. Sesame cake (SC) was used as
protein source. SC was treated with formaldehyde, hydrochloric acid and
sodium hydroxide. Three rumen cannulated bull were used in the study.
Both untreated SC and treated SC with formaldehyde, hydrochloric acid
and sodium hydroxide were incubated in the rumen for 0, 6, 12, 24, 36, 48
and 72 hours. At the end of 72 hours of rumen incubation, degradability
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for crude protein of untreated SC and treated SC with formaldehyde,
hydrochloric acid and sodium hydroxide was found as 43.2, 30.9, 30.5 and
27.2 %; and dry matter degradability as 94.3, 62.6, 88.9 and 86%
respectively. Effective degradability for crude protein of untreated SC and
treated SC with formaldehyde, hydrochloric acid and sodium hydroxide
was 75.2, 62.7, 64.6, and 66.8,% and dry matter as 83.1, 62.7, 58.1, and
76.5 %; respectively. Results indicated that, formaldehyde; hydrochloric
acid and sodium hydroxide treatment decreased crude protein and dry
matter degradability, potential degradability, degradation rate constants
and effective degradability of sesame cake.
