Nutritional and metabolic implications of replacing cornstarch with D-xylose in broiler chickens fed corn and soybean meal-based diet

Effects of substituting cornstarch with D-xylose on growth performance, nutrients digestibility, serum metabolites, and expression of select hepatic genes involved in glucose and lipid metabolism were investigated in broiler chickens. A total of 360 one-day-old male Ross chicks were fed 3 diets (n =...

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Bibliographic Details
Published in:Poultry science 2017-02, Vol.96 (2), p.388-396
Main Authors: Regassa, A, Kiarie, E, Sands, J S, Walsh, M C, Kim, W K, Nyachoti, C M
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena - drug effects
Animals
Avian Proteins - genetics
Avian Proteins - metabolism
Blood Chemical Analysis - veterinary
Chickens - genetics
Chickens - growth & development
Chickens - physiology
Diet - veterinary
Glucose - metabolism
Lipid Metabolism
Liver - enzymology
Liver - metabolism
Male
Random Allocation
Starch - metabolism
Transcription Factors - genetics
Transcription Factors - metabolism
Xylose - metabolism
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Summary:Effects of substituting cornstarch with D-xylose on growth performance, nutrients digestibility, serum metabolites, and expression of select hepatic genes involved in glucose and lipid metabolism were investigated in broiler chickens. A total of 360 one-day-old male Ross chicks were fed 3 diets (n = 24; 5 chicks/cage) for 21 days. A control corn-soybean meal-based diet with 25% cornstarch was formulated to meet specifications. Two additional diets were formulated by substituting cornstarch with 5 or 15% D-xylose w/w. Growth performance and digestibility by index method were determined in 12 replicate cages. Birds in these replicates had free access to feed and water, the BW and feed intake (FI) were monitored weekly and the excreta samples were collected on d 18 to 20. The other 12 replicates were used for blood and liver sampling by serial slaughter. On d 18, baseline (t0) birds were sampled following a 12 h overnight fasting and birds allowed 30 min access to the feed; samples were subsequently taken at 60, 120, 180, 240, and 300 min post feeding. Serum metabolites (glucose, xylose, and insulin) were assayed at all time points, whereas expression of hepatic transcripts was evaluated at zero, 180 and 300 min. Xylose linearly reduced (P
ISSN:0032-5791
1525-3171
DOI:10.3382/ps/pew235