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Lipid metabolism in pigs fed beef tallow or high-oleic acid sunflower oil.
Comp Biochem Physiol B Biochem Mol Biol. 1995 Jan; 110(1):183-92.CB

Abstract

The objectives of this study were to establish the effects of high-oleic sunflower oil (HOSO) and beef tallow on tissue fatty acids and stearoyl-CoA desaturase activities in swine; and to compare effects of HOSO and tallow on swine plasma triglycerides and lipoprotein-cholesterol fractions. Sixteen gilts were divided into two groups: eight fed a control diet containing 10 g/100 g beef tallow, and eight fed a diet containing 10 g/100 g HOSO. Plasma samples were obtained before feeding began and at 4 weeks and 8 weeks of dietary treatment. Samples were obtained from longissimus dorsi muscle, liver, adipose and duodenal mucosa for the measurement of fatty acid composition and stearoyl-CoA desaturase activity. The HOSO diet increased (P < 0.05) the concentrations (mumol/g wet weight of tissue) of 18:1 and 18:2 (n-6) in adipose tissue. In muscle from pigs fed the HOSO diet, concentrations of 14:0, 16:0, 16:1, 18:0, 18:1, and 18:2 (n-6) decreased (P < 0.05) relative to muscle from pigs fed the beef tallow diet; only 14:0 and 16:1 were reduced in liver by the HOSO diet. Stearoyl-CoA desaturase specific activity [(pmol 7 min-1 mg-1 microsomal protein)] was 40 percent lower, and activity expressed as pmol 7 min-1 g-1 tissue) was 20 percent lower, in adipose tissue of pigs fed HOSO (P < 0.05). No differences due to dietary treatment were observed for desaturase activity from muscle, liver or intestinal mucosa. Plasma triglycerides declined steadily in the tallow-fed pigs, possibly reflecting the lower percentages of liver 18:0 and 18:1 acids, relative to the HOSO-fed pigs. The animals responded similarly to the addition of fat (beef tallow or HOSO) to their diets with increased (P < 0.05) plasma total, LDL- and HDL-cholesterol by 4 weeks of treatment. Total cholesterol, LDL-, VLDL- or HDL-cholesterol were not different between pigs fed beef tallow or HOSO. Thus, differences in fatty acid composition of the diets were sufficient to alter tissue fatty acid composition and adipose tissue desaturase activity, but insufficient to alter plasma lipoprotein cholesterol.

Authors+Show Affiliations

Department of Animal Science, Texas Agricultural Experimental Station, Texas A&M University, College Station 77843-2471.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

7858942

Citation

Klingenberg, I L., et al. "Lipid Metabolism in Pigs Fed Beef Tallow or High-oleic Acid Sunflower Oil." Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, vol. 110, no. 1, 1995, pp. 183-92.
Klingenberg IL, Knabe DA, Smith SB. Lipid metabolism in pigs fed beef tallow or high-oleic acid sunflower oil. Comp Biochem Physiol B Biochem Mol Biol. 1995;110(1):183-92.
Klingenberg, I. L., Knabe, D. A., & Smith, S. B. (1995). Lipid metabolism in pigs fed beef tallow or high-oleic acid sunflower oil. Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, 110(1), 183-92.
Klingenberg IL, Knabe DA, Smith SB. Lipid Metabolism in Pigs Fed Beef Tallow or High-oleic Acid Sunflower Oil. Comp Biochem Physiol B Biochem Mol Biol. 1995;110(1):183-92. PubMed PMID: 7858942.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lipid metabolism in pigs fed beef tallow or high-oleic acid sunflower oil. AU - Klingenberg,I L, AU - Knabe,D A, AU - Smith,S B, PY - 1995/1/1/pubmed PY - 1995/1/1/medline PY - 1995/1/1/entrez SP - 183 EP - 92 JF - Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology JO - Comp Biochem Physiol B Biochem Mol Biol VL - 110 IS - 1 N2 - The objectives of this study were to establish the effects of high-oleic sunflower oil (HOSO) and beef tallow on tissue fatty acids and stearoyl-CoA desaturase activities in swine; and to compare effects of HOSO and tallow on swine plasma triglycerides and lipoprotein-cholesterol fractions. Sixteen gilts were divided into two groups: eight fed a control diet containing 10 g/100 g beef tallow, and eight fed a diet containing 10 g/100 g HOSO. Plasma samples were obtained before feeding began and at 4 weeks and 8 weeks of dietary treatment. Samples were obtained from longissimus dorsi muscle, liver, adipose and duodenal mucosa for the measurement of fatty acid composition and stearoyl-CoA desaturase activity. The HOSO diet increased (P < 0.05) the concentrations (mumol/g wet weight of tissue) of 18:1 and 18:2 (n-6) in adipose tissue. In muscle from pigs fed the HOSO diet, concentrations of 14:0, 16:0, 16:1, 18:0, 18:1, and 18:2 (n-6) decreased (P < 0.05) relative to muscle from pigs fed the beef tallow diet; only 14:0 and 16:1 were reduced in liver by the HOSO diet. Stearoyl-CoA desaturase specific activity [(pmol 7 min-1 mg-1 microsomal protein)] was 40 percent lower, and activity expressed as pmol 7 min-1 g-1 tissue) was 20 percent lower, in adipose tissue of pigs fed HOSO (P < 0.05). No differences due to dietary treatment were observed for desaturase activity from muscle, liver or intestinal mucosa. Plasma triglycerides declined steadily in the tallow-fed pigs, possibly reflecting the lower percentages of liver 18:0 and 18:1 acids, relative to the HOSO-fed pigs. The animals responded similarly to the addition of fat (beef tallow or HOSO) to their diets with increased (P < 0.05) plasma total, LDL- and HDL-cholesterol by 4 weeks of treatment. Total cholesterol, LDL-, VLDL- or HDL-cholesterol were not different between pigs fed beef tallow or HOSO. Thus, differences in fatty acid composition of the diets were sufficient to alter tissue fatty acid composition and adipose tissue desaturase activity, but insufficient to alter plasma lipoprotein cholesterol. SN - 1096-4959 UR - https://www.unboundmedicine.com/medline/citation/7858942/Lipid_metabolism_in_pigs_fed_beef_tallow_or_high_oleic_acid_sunflower_oil_ L2 - https://medlineplus.gov/dietaryfats.html DB - PRIME DP - Unbound Medicine ER -