402
Effects of an Algae-Modified Montmorillonite Clay and Deoxynivalenol on Nursery Pig Performance

Monday, March 16, 2015: 2:30 PM
312-313 (Community Choice Credit Union Convention Center)
Jake A Erceg , Kansas State University, Manhattan, KS
H. L Frobose , Kansas State University, Manhattan, KS
M. D. Tokach , Kansas State University, Manhattan, KS
J. M. DeRouchey , Kansas State University, Manhattan, KS
Steven S. Dritz , Kansas State University, Manhattan, KS
R. D. Goodband , Kansas State University, Manhattan, KS
Jim L Nelssen , Kansas State University, Manhattan, KS
Abstract Text:

A total of 280 barrows and gilts (PIC 327×1050; initially 9.9 ± 1.5 kg) were used in a 28-d growth study to evaluate the effects of an algae-modified montmorillonite clay (AMMC; Olmix S.A., Brehan, France) on the growth performance of nursery pigs fed diets contaminated with deoxynivalenol (DON).  Pigs were allotted to 1 of 5 treatments by initial weight, gender, and weaning age in a completely randomized design in a 2 × 2 + 1 factorial arrangement. There were 8 replicate pens per treatment and 7 pigs per pen. Naturally DON-contaminated wheat (10.7 mg/kg) replaced non-contaminated wheat to incorporate DON into test diets. Basal ingredients were tested for mycotoxin and amino acid content prior to diet manufacturing. The 5 experimental diets, fed in pellet form, included a control (<0.5 ppm DON) without or with 0.50% AMMC and a DON contaminated diet (5 ppm DON) without or with 0.25 or 0.50% AMMC. Following diet manufacturing, analyzed DON averaged <0.5 mg/kg for control diets and 6.6 mg/kg for DON contaminated diets. Data were analyzed using mixed model. There were no interactions between DON and AMMC (P > 0.10). Overall (d 0 to 28), pigs fed diets containing DON had reduced (P < 0.01) ADG (411 vs. 524 g), ADFI (689 vs. 783 g) and G:F (0.600 vs. 0.671) and increased (P < 0.05) variation in final BW (15.9 vs. 12.8%) compared with pigs fed diets without DON. The addition of AMMC had no effect (P > 0.10) on growth performance.  In conclusion, dietary DON reduced pig performance as expected; however, adding AMMC (0.25 or 0.50%) did not mitigate the negative effect.

 

Control

DON Contaminated

Probability, P <1

Item                                  AMMC:

---

0.50%

---

0.25%

0.50%

SEM

DON

Analyzed DON, mg/kg

<0.5

<0.5

6.6

6.7

6.4

d 0 to 28

   ADG, g

533

516

420

403

421

14.2

0.001

   ADFI, g

782

784

686

693

726

23.2

0.003

   G:F

0.683

0.658

0.614

0.585

0.583

0.021

0.002

CV, d 28 BW

0.136

0.121

0.166

0.152

0.147

0.015

0.05

 

1 No effects observed for AMMC (P > 0.20).

Keywords: deoxynivalenol. mycotoxin, nursery pig