+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Effect of sorghum grain processing on site and extent of digestion of starch in lactating dairy cows



Effect of sorghum grain processing on site and extent of digestion of starch in lactating dairy cows



Journal of Dairy Science 78(6): 1318-1327



Four lactating Holstein cows, fitted with T-type cannulas in the proximal duodenum were used in a 4 x 4 Latin square design to study the effects of sorghum grain processing on site of digestion of nutrients. Diets were steam-rolled corn, dry-rolled sorghum, steam-flaked sorghum, and an equal mixture of steam-flaked and dry-rolled sorghum as 43% of DM in a TMR (35:65, ratio of forage to concentrate). Intake and duodenal starch for all diets averaged 6.8 and 2.1 kg/d. Apparent total tract and ruminal digestibilities of starch for the respective diets averaged 81, 60, 70, and 60 and 97, 85, 91, and 89%. Starch digestibilities in the intestine were higher for steam-flaked than for dry-rolled or mixed sorghum (83 vs. 63 and 61%). Consistent with less postruminal passage of starch, cows fed steam-flaked sorghum had higher fecal pH than did cows on other treatments. No effects of diet occurred on NDF or ADF digestibilities. Compared with dry rolling of sorghum, steam flaking increased the digestibility of starch in the rumen from 60 to 81% and in the small intestine from 63 to 83%, increasing digestible starch intake 9% (6.4 vs. 5.9 kg/d). Values for steam-rolled corn were intermediate. Microbial protein in the rumen was not significantly altered by diet.

(PDF emailed within 0-6 h: $19.90)

Accession: 002604725

Download citation: RISBibTeXText

PMID: 7673521

DOI: 10.3168/jds.s0022-0302(95)76753-4


Related references

Effect of sorghum grain processing on site and extent of starch digestion in lactating dairy cows. Journal of Dairy Science 75(SUPPL 1): 296, 1992

Effect of corn particle size on site and extent of starch digestion in lactating dairy cows. Journal of Dairy Science 87(5): 1389-1399, 2004

Comparison of urea treatment with established methods of sorghum grain preservation and processing on site and extent of starch digestion by cattle. Journal of Animal Science 69(11): 4570-4576, 1991

Effect of variety and reconstitution on the site and extent of starch and protein digestion of sorghum grain. Journal of Animal Science 55(SUPPL 1): 429, 1982

Effect of sorghum grain variety and reconstitution on site and extent of starch and protein digestion in steers. Journal of Animal Science 61(3): 702-712, 1985

Effect of Sorghum Grain Variety and Reconstitution on Site and Extent of Starch and Protein Digestion in Steers. Journal of Animal Science 61(3): 702-712, 1985

Effect of sorghum grain processing on the performance of lactating dairy cows (LDC). Journal of Dairy Science 73(Supplement 1): 127, 1990

Effect of maize silage maturity on site of starch and NDF digestion in lactating dairy cows. Animal Feed Science and Technology 118(3/4): 279-294, 2005

Effect of maize grain treatment on rumen fermentation and the site and extent of starch digestion in cows. Journal of Animal and Feed Sciences 14(1): 79-91, 2005

Effect of fiber source and ruminal starch degradability on site and extent of digestion in dairy cows. Journal of dairy science 76(8): 2244-2253, 1993

Effect of altering the ratio of dry rolled corn to high moisture harvested sorghum grain on site and extent of starch digestion in heifers. Animal Science Research Report, Oklahoma Agricultural Experiment Station (MP-118): 86-90, 1986

Endosperm type and kernel processing of corn silage Effect on starch and fiber digestion and ruminal turnover in lactating dairy cows. Journal of Dairy Science 85(Supplement 1): 204, 2002

Effects of corn processing on the site and extent of digestion in lactating cows. Journal of Dairy Science 80(9): 2087-2097, 1997

Site and extent of raw potato starch digestion in dairy cows. Wirtschaftseigene Futter 36(3): 246-257, 1990

Effects of barley grain processing on extent of digestion and milk production of lactating cows. Journal of Dairy Science 83(3): 554-568, 2000