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- Title
290 Evaluation of an Organic Acid Blend on Gut Morphology and Nitrogen Retention in Nursery Pig.
- Authors
Murugesan, G R; Mendoza, S M; Hendel, E G; Tacconi, A; Gabler, N K
- Abstract
The present experiment was conducted to determine the effect of an organic acid blend (OA) on growth performance, nitrogen retention, and gut morphology in nursery pigs. Dietary treatments were: 1) basal diet [CON] and 2) basal + 0.10% OA (Biotronic Top3® a blend of formic, propionic, and acetic acids combined with cinnamaldehyde and Permeabilizing ComplexTM; BIOMIN Holding GmbH). Diets were corn-soybean meal based and formulated to contain 4.42 and 3.85 g SID lysine/Mcal ME for phase 1 (d 0 – 14) and 2 (d 14 – 28), respectively. Pigs (n = 8/trt, BW = 7.71 ± 0.91 kg) were individually penned and fed <italic>ad libitum</italic> until d 21, then pigs were fed daily three times of maintenance in metabolism crates for 7 d. Body weight and feed disappearance were measured on d 7, 14, 21, and 28. Total feces and urine were collected from d 23 to 26, and along with feed were analyzed for N content. Thereafter, whole body nitrogen balance was calculated. On d 28, pigs were euthanized and ileum sections were collected approximately 1.2 m proximal from the ileocecal junction for assessment of intestinal villus and crypt morphology. Supplementation of OA increased villi height (263 vs. 310 µm, SEM=9.67, <italic>P</italic><0.001) and crypt depth (180 vs. 203 µm, SEM=6.50, <italic>P</italic><0.001), and did not affect villi:crypt ratio (1.38 vs. 1.45, SEM=0.06, <italic>P</italic>=0.252). Supplementation of OA increased N intake (15.76 vs. 21.83 g/d, SEM=1.49, <italic>P</italic>=0.011), fecal N excreted (3.78 vs. 5.44 g/d, SEM=0.53, <italic>P</italic>=0.044), and did not affect urine N excreted (3.11 vs. 3.07 g/d, SEM=0.32, <italic>P</italic>=0.926). As a result, compared to the CON, N retained in the pigs was significantly improved by OA supplementation (8.87 vs. 13.32 g/d, SEM=1.15, <italic>P</italic>=0.015). Supplementation of OA also increased serum IGF-1 concentrations (123 vs. 149 ng/mL, SEM=4.9, <italic>P</italic>=0.002). For the 21-d growth period post weaning, supplementation of OA did not alter final BW (11.68 vs. 12.03 kg, SEM=0.52, <italic>P</italic>=0.638), ADG (0.183 vs. 0.213 kg/d, SEM=0.020, <italic>P</italic>=0.294), ADFI (0.266 vs. 0.299 kg/d, SEM=0.021, <italic>P</italic>=0.280), and G:F (0.671 vs. 0.709 kg/kg, SEM=0.032, <italic>P</italic>=0.424). Overall, the supplementation of an organic acid blend to nursery pigs caused an improvement in gut morphology, N retention, and serum IGF-1. Further research is needed to evaluate growth performance of nursery pigs with more replications under commercial conditions.
- Subjects
ORGANIC acids; INTESTINES; SWINE nutrition; NITROGEN in animal nutrition; SWINE growth; MORPHOLOGY; ANATOMY
- Publication
Journal of Animal Science, 2018, Vol 96, p156
- ISSN
0021-8812
- Publication type
Article
- DOI
10.1093/jas/sky073.287