The use of corn fodder, its silage or corn stover as an animal feed. 3. Some comparative ruminal activities

Soliman, S.M.; Abou Akkada, A.R.; Naga, M.A.; Habib, M.M.

Alexandria Journal of Agricultural Research 23(1): 25-29


ISSN/ISBN: 0044-7250
Accession: 000557257

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3. In 3 adult Barki sheep with rumen fistulae, fed on maize fodder, maize fodder silage or maize stover, rumen activity was studied after 2 to 3 weeks of adaptation. Results given are the average for 2 years. Counts were done before feeding and 1, 2, 4, 6 and 9 h after. Although intake of fodder was 14% higher than that of silage, the protozoal count of sheep fed on silage was 15% higher. Numbers were considerably less on stover, for which the intake was lowest. Entodinium percentages were highest on silage. Holotrichs formed about 13% of the population on fodder, but were almost absent on silage and stover. Rumen concentrations of volatile fatty acids were highest on fodder, followed by silage, then stover. Values were always highest 4 h after feeding. Ammonia N concentrations tended to be highest on silage, followed by fodder, then stover. DM digestibility in the rumen was studied by the nylon bag technique; after 24 h only 29.99, 31.49 and 25.95% of DM of fodder, silage and stover, respectively, was digested; even after 48 h digestibility did not exceed 46.5%. It is suggested that the role of the rumen in digestion of maize fodder and its products may be less than for other types of feed. In field trials in Alexandria in 1968-9 Barki sheep were fed fresh forage, silage or stover of maize. After 24 h only 29.94, 31.49 and 25.95% of the DM, respectively, had been digested and after 48 h the values were only 43.01, 46.65 and 40.06%, respectively. VFA concentrations and protozoal counts in the rumen were also low.