Impacts of energy feeds and supplemental protease on growth performance, nutrient digestibility, and gut health of pigs from 18 to 45 kg body weight

Animal Nutrition
Hongyu ChenSung Woo Kim

Abstract

A total of 144 pigs with 18.4 ± 2.3 kg initial body weight (BW) at 6 wk of age were used in a 40-d trial to evaluate effects of protease (300,000 U/kg feed, BioResource International Inc., Durham, NC, USA) on growth performance, apparent ileal digestibility (AID) of nutrients, and gut health of pigs fed diets with sorghum. Pigs were randomly allotted to 4 treatments (12 pens per treatment, 3 pigs per pen) in a 2 × 2 factorial arrangement (corn or sorghum basal diets, and 0 or 0.05% protease as 2 factors) with sex and initial BW as blocks. Experimental period had phase 1 (d 1 to 21) and phase 2 (d 22 to 40). About 65% (phase 1) and 72% (phase 2) of cereal grains were used in corn or sorghum based diets. Both grains were ground to 400 μm. Body weight and feed intake were recorded weekly. On d 35, serum was collected to quantify tumor necrosis factor-α (TNF-α) and malondialdehyde (MDA). Titanium dioxide (0.3%) was added as an indigestible marker for an additional 4 d feeding. On d 40, 32 pigs (8 pigs per treatment) were euthanized to collect digesta from jejunum and ileum (for viscosity and AID), tissues (for morphology) and mucosa samples (for TNF-α and MDA) from duodenum, jejunum, and ileum. Replacing corn with sorghum in the di...Continue Reading

Citations

Nov 13, 2018·Annual Review of Animal Biosciences·Sung Woo KimXin Gen Lei
Mar 2, 2021·Frontiers in Veterinary Science·Lan ZhengSung Woo Kim
Mar 12, 2021·Animal Bioscience·Sung Woo Kim, Marcos E Duarte
Mar 19, 2021·Journal of Animal Physiology and Animal Nutrition·Long PanWeiyun Zhu
Apr 18, 2021·World Journal of Microbiology & Biotechnology·Cíntia Lionela Ambrosio de MenezesRonivaldo Rodrigues da Silva
Apr 20, 2021·Frontiers in Veterinary Science·Rajesh Jha, Sung Woo Kim

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Methods Mentioned

BETA
MDA
Protein Assay
ELISA
Assay

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