Tags

Type your tag names separated by a space and hit enter

Conjugated linoleic acid increases in milk when cows fed fish meal and extruded soybeans for an extended period of time.
J Dairy Sci. 2004 Jun; 87(6):1758-66.JD

Abstract

The objective of this study was to determine the effect of feeding a conjugated linoleic acid (CLA) stimulating diet for an extended period of time on milk cis-9, trans-11 CLA and vaccenic acid (VA) concentrations. Twenty cows (16 Holstein and 4 Brown Swiss) were divided into 2 groups (n = 10 per treatment) for a 10-wk study. Cows in group 1 were fed a traditional corn-soybean-basal diet (control), while those in group 2 were fed a blend of 0.5% fish oil from fish meal and 2% soybean oil from extruded soybeans (FMESB) to achieve higher milk fat cis-9, trans-11 CLA and VA. Diets were formulated to contain 18% CP and were composed (dry matter basis) of 50% concentrate mix, 25% corn silage, and 25% alfalfa hay. Dry matter intake was not affected by diet. Milk production increased in cows fed the FMESB diet. Milk fat and milk protein percentages decreased with the FMESB diet; however, milk fat and protein yields were not affected by treatments. Milk fat cis-9, trans-11 CLA and VA concentration (g/100 of fatty acids) and yield (g/d) were 2.5-fold greater for cows fed the FMESB diet over the 10 wk of fat supplementation. For cows fed the FMESB diet, contents of milk fat cis-9, trans-11 CLA and VA gradually increased from the first week of fat supplementation, reached the highest concentrations in wk 3, then gradually decreased during wk 4 and 5 and then remained relatively constant until wk 10. The concentration of cis-9, trans-11 CLA and VA from the control diet was relatively constant over the 10 wk of fat supplementation. Concentrations of cis-9, trans-11 CLA and VA in milk fat can be increased within a week by feeding a blend of fish meal and extruded soybeans, and that increase remains relatively constant after wk 5 of fat supplementation.

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

15453490

Citation

AbuGhazaleh, A A., et al. "Conjugated Linoleic Acid Increases in Milk when Cows Fed Fish Meal and Extruded Soybeans for an Extended Period of Time." Journal of Dairy Science, vol. 87, no. 6, 2004, pp. 1758-66.
AbuGhazaleh AA, Schingoethe DJ, Hippen AR, et al. Conjugated linoleic acid increases in milk when cows fed fish meal and extruded soybeans for an extended period of time. J Dairy Sci. 2004;87(6):1758-66.
AbuGhazaleh, A. A., Schingoethe, D. J., Hippen, A. R., & Kalscheur, K. F. (2004). Conjugated linoleic acid increases in milk when cows fed fish meal and extruded soybeans for an extended period of time. Journal of Dairy Science, 87(6), 1758-66.
AbuGhazaleh AA, et al. Conjugated Linoleic Acid Increases in Milk when Cows Fed Fish Meal and Extruded Soybeans for an Extended Period of Time. J Dairy Sci. 2004;87(6):1758-66. PubMed PMID: 15453490.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Conjugated linoleic acid increases in milk when cows fed fish meal and extruded soybeans for an extended period of time. AU - AbuGhazaleh,A A, AU - Schingoethe,D J, AU - Hippen,A R, AU - Kalscheur,K F, PY - 2004/9/30/pubmed PY - 2005/4/15/medline PY - 2004/9/30/entrez SP - 1758 EP - 66 JF - Journal of dairy science JO - J Dairy Sci VL - 87 IS - 6 N2 - The objective of this study was to determine the effect of feeding a conjugated linoleic acid (CLA) stimulating diet for an extended period of time on milk cis-9, trans-11 CLA and vaccenic acid (VA) concentrations. Twenty cows (16 Holstein and 4 Brown Swiss) were divided into 2 groups (n = 10 per treatment) for a 10-wk study. Cows in group 1 were fed a traditional corn-soybean-basal diet (control), while those in group 2 were fed a blend of 0.5% fish oil from fish meal and 2% soybean oil from extruded soybeans (FMESB) to achieve higher milk fat cis-9, trans-11 CLA and VA. Diets were formulated to contain 18% CP and were composed (dry matter basis) of 50% concentrate mix, 25% corn silage, and 25% alfalfa hay. Dry matter intake was not affected by diet. Milk production increased in cows fed the FMESB diet. Milk fat and milk protein percentages decreased with the FMESB diet; however, milk fat and protein yields were not affected by treatments. Milk fat cis-9, trans-11 CLA and VA concentration (g/100 of fatty acids) and yield (g/d) were 2.5-fold greater for cows fed the FMESB diet over the 10 wk of fat supplementation. For cows fed the FMESB diet, contents of milk fat cis-9, trans-11 CLA and VA gradually increased from the first week of fat supplementation, reached the highest concentrations in wk 3, then gradually decreased during wk 4 and 5 and then remained relatively constant until wk 10. The concentration of cis-9, trans-11 CLA and VA from the control diet was relatively constant over the 10 wk of fat supplementation. Concentrations of cis-9, trans-11 CLA and VA in milk fat can be increased within a week by feeding a blend of fish meal and extruded soybeans, and that increase remains relatively constant after wk 5 of fat supplementation. SN - 0022-0302 UR - https://www.unboundmedicine.com/medline/citation/15453490/Conjugated_linoleic_acid_increases_in_milk_when_cows_fed_fish_meal_and_extruded_soybeans_for_an_extended_period_of_time_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(04)73331-7 DB - PRIME DP - Unbound Medicine ER -