175
Evaluation of different corn oil sources on nursery pig growth performance

Wednesday, March 19, 2014: 10:15 AM
312-313 (Community Choice Credit Union Convention Center)
Kyle E. Jordan , Kansas State University, Manhattan, KS
Marcio A Goncalves , Kansas State University, Manhattan, KS
Mike D. Tokach , Kansas State University, Manhattan, KS
Robert D. Goodband , Kansas State University, Manhattan, KS
Steve S. Dritz , Kansas State University, Manhattan, KS
Joel M. DeRouchey , Kansas State University, Manhattan, KS
Jason C Woodworth , Kansas State University, Manhattan, KS
Abstract Text:

A total of 350 pigs (PIC 1050; initially 12 ± 0.04 kg and 45 d of age) were used in a 21-d study to compare the effects of soybean oil and 2 sources of corn oil on nursery pig growth performance with 5 pigs per pen and 10 replications per treatment. The 7 dietary treatments consisted of a corn-soybean meal-based control diet with no added oil or with 2.5 or 5% soybean oil (NE=7,545 kcal/kg) or corn oil from 2 sources (NE=7,459 kcal/kg for both sources). Corn oil sources were derived from post-fermentation extraction from ethanol production. Diets were formulated to have similar standardized ileal digestible Lys:NE ratios (5.09 g/Mcal). Free fatty acid levels were 0.16%, 4.1%, and 11.8% and initial peroxide values were 47.6, 1.0, and 5.6 meq/kg for the soybean, corn oils 1, and 2, respectively. Increasing corn or soybean oil increased (linear; P<0.02) ADG, G:F, and final (d 21) BW. However, a source × level interaction was observed (P<0.05) for ADG, G:F and caloric efficiency (CE; caloric intake/total BW gain). For ADG, increasing soybean oil or corn oil source 1 from 2.5 to 5% increased ADG while increasing corn oil source 2 from 2.5 to 5% decreased ADG.  Gain:feed increased at a greater rate for pigs fed corn oil source 1 compared to the other oil sources. For CE, pigs fed soybean oil or corn oil source 2 had poorer CE as level increased from 2.5 to 5%, whereas pigs fed source 1 had improved CE as level increased. In conclusion, soybean or corn oil increased ADG and G:F when compared to the control as expected; however, growth performance varied among the 3 oil sources.

Control

Soybean oil

Corn oil source 1

Corn oil source 2

 

 

Item

0%

2.5%

5%

2.5%

5%

2.5%

5%

SEM

 

 

 

 

 

 

ADG, g

633

682

693

662

673

661

655

12.8

 

ADFI, g

1,011

1,026

1,008

978

943

981

946

20.5

 

G:F

0.627

0.666

0.689

0.677

0.714

0.675

0.693

0.01

 

   CE1

3,837

3,776

3,806

3,708

3,666

3,723

3,778

63.9

 

1 Caloric efficiency, Mcal NE/kg of gain

 

Keywords: corn oil, growth performance, nursery pig