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Feeding fish meal and extruded soybeans enhances the conjugated linoleic acid (CLA) content of milk.
J Dairy Sci. 2002 Mar; 85(3):624-31.JD

Abstract

Twelve multiparous Holstein cows averaging 65 (33 to 122) DIM were used in a 4 x 4 Latin square for 4-wk periods to determine whether feeding fish oil as fish meal would stimulate increased amounts of milk conjugated linoleic acid (cis-9, trans-11 C18:2; CLA) and transvaccenic acid (trans-11 C18:1; TVA) when the cows were fed extruded soybeans to supply additional linoleic acid. Treatment diets were 1) control; 2) 0.5% fish oil from fish meal; 3) 2.5% soybean oil from extruded soybeans; and 4) 0.5% fish oil from fish meal and 2% soybean oil from extruded soybeans. Diets were formulated to contain 18% crude protein and were composed (dry basis) of 50% concentrate mix, 25% corn silage, and 25% alfalfa hay. Intake of DM was not affected by diet. Milk production was increased by diets 2, 3, and 4 compared with diet 1 (control). Milk fat and milk protein percentages decreased with diets 3 and 4. Milk fat yield was not affected by treatments, but yield of milk protein was increased with supplemental fish meal and extruded soybeans or their blend. When diets 2, 3, or 4 were fed, concentrations of cis-9, trans-11 CLA in milk fat increased by 0.4-, 1.4-, and 3.2-fold, and TVA concentrations in milk fat increased by 0.4-, 1.8-, and 3.5-fold compared with the control milk fat. Increases in TVA and cis-9, trans-11 CLA were 91 to 109% greater when a blend of fish meal and extruded soybeans was fed than the additive effect of fish meal and extruded soybeans. This suggested that fish oil increased the production of CLA and TVA from other dietary sources of linoleic acid such as extruded soybeans.

Authors+Show Affiliations

Dairy Science Department, South Dakota State University, Brookings 57007-0647, USA.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11949867

Citation

Abu-Ghazaleh, A A., et al. "Feeding Fish Meal and Extruded Soybeans Enhances the Conjugated Linoleic Acid (CLA) Content of Milk." Journal of Dairy Science, vol. 85, no. 3, 2002, pp. 624-31.
Abu-Ghazaleh AA, Schingoethe DJ, Hippen AR, et al. Feeding fish meal and extruded soybeans enhances the conjugated linoleic acid (CLA) content of milk. J Dairy Sci. 2002;85(3):624-31.
Abu-Ghazaleh, A. A., Schingoethe, D. J., Hippen, A. R., & Whitlock, L. A. (2002). Feeding fish meal and extruded soybeans enhances the conjugated linoleic acid (CLA) content of milk. Journal of Dairy Science, 85(3), 624-31.
Abu-Ghazaleh AA, et al. Feeding Fish Meal and Extruded Soybeans Enhances the Conjugated Linoleic Acid (CLA) Content of Milk. J Dairy Sci. 2002;85(3):624-31. PubMed PMID: 11949867.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Feeding fish meal and extruded soybeans enhances the conjugated linoleic acid (CLA) content of milk. AU - Abu-Ghazaleh,A A, AU - Schingoethe,D J, AU - Hippen,A R, AU - Whitlock,L A, PY - 2002/4/13/pubmed PY - 2002/11/26/medline PY - 2002/4/13/entrez SP - 624 EP - 31 JF - Journal of dairy science JO - J Dairy Sci VL - 85 IS - 3 N2 - Twelve multiparous Holstein cows averaging 65 (33 to 122) DIM were used in a 4 x 4 Latin square for 4-wk periods to determine whether feeding fish oil as fish meal would stimulate increased amounts of milk conjugated linoleic acid (cis-9, trans-11 C18:2; CLA) and transvaccenic acid (trans-11 C18:1; TVA) when the cows were fed extruded soybeans to supply additional linoleic acid. Treatment diets were 1) control; 2) 0.5% fish oil from fish meal; 3) 2.5% soybean oil from extruded soybeans; and 4) 0.5% fish oil from fish meal and 2% soybean oil from extruded soybeans. Diets were formulated to contain 18% crude protein and were composed (dry basis) of 50% concentrate mix, 25% corn silage, and 25% alfalfa hay. Intake of DM was not affected by diet. Milk production was increased by diets 2, 3, and 4 compared with diet 1 (control). Milk fat and milk protein percentages decreased with diets 3 and 4. Milk fat yield was not affected by treatments, but yield of milk protein was increased with supplemental fish meal and extruded soybeans or their blend. When diets 2, 3, or 4 were fed, concentrations of cis-9, trans-11 CLA in milk fat increased by 0.4-, 1.4-, and 3.2-fold, and TVA concentrations in milk fat increased by 0.4-, 1.8-, and 3.5-fold compared with the control milk fat. Increases in TVA and cis-9, trans-11 CLA were 91 to 109% greater when a blend of fish meal and extruded soybeans was fed than the additive effect of fish meal and extruded soybeans. This suggested that fish oil increased the production of CLA and TVA from other dietary sources of linoleic acid such as extruded soybeans. SN - 0022-0302 UR - https://www.unboundmedicine.com/medline/citation/11949867/Feeding_fish_meal_and_extruded_soybeans_enhances_the_conjugated_linoleic_acid__CLA__content_of_milk_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(02)74116-7 DB - PRIME DP - Unbound Medicine ER -