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Effect of dietary supplementation of xylanase in a wheat-based diet containing canola meal on growth performance, nutrient digestibility, organ weight, and short-chain fatty acid concentration in digesta when fed to weaned pigs
- Source :
- J Anim Sci
- Publication Year :
- 2019
-
Abstract
- This study was designed to determine the effect of dietary supplementation of xylanase on growth performance, nutrient digestibility, organ weight, digesta pH, and concentration of short-chain fatty acids (SCFA) of weaned pigs fed wheat–canola meal (CM) diets over a 35-d period. A total of 144 piglets (72 barrows and 72 gilts) weaned at 18 ± 2 d of age, with initial body weight (BW) of 6.2 ± 0.7 kg, received one of eight dietary treatments based on randomized complete block design. BW and feed intake were recorded weekly to calculate average daily gain (ADG), average daily feed intake (ADFI), and feed efficiency (G:F). Treatments consisted of a control wheat–soybean meal-based diet and wheat-regular (RCM), dehulled (DCM), or coarse CM (CCM) without and with 16,000 BXU/kg xylanase (Econase XT). All diets contained 500 FTU/kg of phytase (Quantum Blue 5G) and titanium dioxide (0.3%). Apparent total tract digestibility (ATTD) of neutral detergent fiber (NDF), crude protein (CP), phosphorous (P), calcium (Ca), dry matter, and diet were determined. On day 35, one pig per pen was euthanized to evaluate the main factors of protein, xylanase supplementation, and sex on organ weight, ileal and colon digesta pH, and colon digesta concentrations of SCFA. The main factors did not affect growth performance. Xylanase supplementation improved nutrient digestibilities in all diets and increased ileal and colonic digesta pH without affecting the growth performance of weaned pigs fed wheat and CM-based diets. A protein–xylanase effect (P < 0.05) resulted in increasing the ATTD of NDF from 28% to 32% and from 29% to 37% for RCM and DCM, respectively. The ATTD of CP was greater (P < 0.05) with xylanase supplementation (75% vs. 70%). Xylanase supplementation increased ATTD of P and Ca. A three-way interaction (P < 0.05) for protein–xylanase–gender for colon pH, acetic, and propionic acid in the colon digesta of pigs indicated that, in addition to the protein source, piglet sex could have influenced how xylanase works. Xylanase supplementation increased (P < 0.05) the weight of the liver and spleen and tended (P < 0.10) to increase the size of the kidney. In conclusion, dietary supplementation of xylanase increased nutrient digestibility and digesta pH but did not influence the growth performance of weaned pigs fed wheat and CM-based diets over a 35-d period.
- Subjects :
- 0301 basic medicine
Dietary Fiber
Male
Swine
Randomized block design
Weaning
Non Ruminant Nutrition
Feed conversion ratio
03 medical and health sciences
Animal science
Genetics
Animals
Dry matter
Triticum
Meal
6-Phytase
Endo-1,4-beta Xylanases
Chemistry
Short-chain fatty acid
Brassica napus
0402 animal and dairy science
04 agricultural and veterinary sciences
General Medicine
Nutrients
Organ Size
Fatty Acids, Volatile
040201 dairy & animal science
Animal Feed
Diet
Gastrointestinal Tract
Neutral Detergent Fiber
030104 developmental biology
Dietary Supplements
Xylanase
Animal Science and Zoology
Phytase
Digestion
Female
Food Science
Subjects
Details
- ISSN :
- 15253163
- Volume :
- 98
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of animal science
- Accession number :
- edsair.doi.dedup.....c69bbffff0034791fc23f22641af7a60