Campus Units
Animal Science
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
9-2017
Journal or Book Title
Journal of Animal Science
Volume
95
Issue
9
First Page
3984
Last Page
3995
DOI
10.2527/jas.2017.1824
Abstract
The objective was to determine the energy concentration of a diverse array of dietary fat sources and from these data, develop regression equations that explain differences based on chemical composition. A total of 120 Genetiporc 6.0 × Genetiporc F25 (PIC, Inc., Hendersonville, TN) individually housed barrows were studied for 56 d. These barrows (initial BW of 9.9 ± 0.6 kg) were randomly allotted to 1 of 15 dietary treatments. Each experimental diet included 95% of a corn-soybean meal basal diet plus 5% either: corn starch or 1 of 14 dietary fat sources. The 14 dietary fat sources (animal-vegetable blend, canola oil, choice white grease source A, choice white grease source B, coconut oil, corn oil source A, corn oil source B, fish oil, flaxseed oil, palm oil, poultry fat, soybean oil source A, soybean oil source B, and tallow) were selected to provide a diverse and robust range of U:S (unsaturated fatty acid:SFA). Pigs were limit-fed experimental diets from d 0 to 10 and d 46 to 56 providing a 7 d adaption for fecal collection on d 7 to 10 (13 kg BW) and d 53 to 56 (50 kg BW). At 13 kg BW, the average energy content of the 14 sources was 8.42 Mcal of DE/kg, 8.26 Mcal of ME/kg, and 7.27 Mcal of NE/kg, respectively. At 50 kg BW, the average energy content was 8.45 Mcal of DE/kg, 8.28 Mcal of ME/kg, and 7.29 Mcal of NE/kg, respectively. At 13 kg BW, variation of dietary fat DE content was explained by: DE (Mcal/kg) = 9.363 + [0.097 × (FFA, %)] – [0.016 × Omega- 6:Omega-3] – [1.240 × (arachidic acid, %)] – [5.054 × (insoluble impurities, %)] + [0.014 × (palmitic acid, %)] (P = 0.008; R2 = 0.82). At 50 kg BW, variation of dietary fat DE content was explained by: DE (Mcal/kg) = 8.357 + [0.189 × U:S] – [0.195 × (FFA, %)] – [6.768 × (behenic acid, %)] + [0.024 × (PUFA, %)] (P = 0.002; R2 = 0.81). In summary, the chemical composition of dietary fat explained a large degree of the variation observed in the energy content of dietary fat sources at both 13 and 50 kg BW.
Copyright Owner
American Society of Animal Science
Copyright Date
2017
Language
en
File Format
application/pdf
Recommended Citation
Kellner, T. A. and Patience, John F., "The digestible energy, metabolizable energy, and net energy content of dietary fat sources in thirteen- and fifty-kilogram pigs" (2017). Animal Science Publications. 817.
https://lib.dr.iastate.edu/ans_pubs/817
Included in
Agriculture Commons, Animal Experimentation and Research Commons, Animal Sciences Commons
Comments
This is a manuscript of an article published as Kellner, T. A., and J. F. Patience. "The digestible energy, metabolizable energy, and net energy content of dietary fat sources in thirteen-and fifty-kilogram pigs." Journal of animal science 95, no. 9 (2017): 3984-3995. doi: 10.2527/jas.2017.1824. Posted with permission.