K. Jochmann et al., Influence of corn maturity and lactic acid bacteria during ensilage on nutrient conversion in the dairy cow digestive tract, J ANIM PHYS, 82(4), 1999, pp. 178-192
Citations number
34
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION-ZEITSCHRIFT FUR TIERPHYSIOLOGIE TIERERNAHRUNG UND FUTTERMITTELKUNDE
Four ruminally and duodenally fistulated dairy cows were used to examine th
e effects of corn silages of different maturity stages (23.0%, 30.5%, 35.9%
DM) on rumen fermentation parameters, in sacco nutrient degradability, flo
w of crude nutrients to the duodenum and digestibility. The effects of a la
ctic acid bacteria inoculation at ensiling of corn were also examined. Neit
her maturity nor inoculation have had any significant influence on fermenta
tion parameters, degradation of most nutrients and protein synthesis. In sa
cco and in vivo degradation of fibre fractions in the rumen decreased with
higher maturity, but apart from (neutral detergent fibre) NDF this was comp
ensated in the intestine. Starch content of corn silages increased with hig
her maturity. The starch by-pass through the rumen was enhanced by up to 27
0 g, daily caused by a higher starch intake and slightly lower ruminal star
ch degradation.