Influence of dietary fish oil on conjugated linoleic acid and other fatty acids in milk fat from lactating dairy cows

被引:168
作者
Donovan, DC
Schingoethe, DJ [1 ]
Baer, RJ
Ryali, J
Hippen, AR
Franklin, ST
机构
[1] S Dakota State Univ, Dept Dairy Sci, Brookings, SD 57007 USA
[2] Univ Kentucky, Dept Anim Sci, Lexington, KY 40456 USA
关键词
fish oil; conjugated linoleic acid; milk fat; transvaccenic acid;
D O I
10.3168/jds.S0022-0302(00)75155-1
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Lactating cows were fed menhaden fish oil to elevate concentrations of conjugated linoleic acid, transvaccenic acid, and n-3 fatty acids in milk. Twelve multiparous Holstein cows at 48 +/- 11 DIM were assigned randomly to a replicated 4 x 4 Latin square. Each treatment period was 35 d in length, with data collected d 15 to 35 of each period. On a dry matter (DM) basis, diets contained 25% corn silage, 25% alfalfa hay, and 50% of the respective concentrate mix. Fish oil was supplemented at 0, 1, 2, and 3% of ration DM. Linear decreases were observed for DM intake (28.8, 28.5, 23.4, and 20.4 kg/d) and milk fat (2.99, 2.79, 2.37, and 2.30%) for 0 to 3% dietary fish oil, respectively. Milk yield (31.7, 34.2, 32.3, and 27.4 kg/d) increased as dietary fish oil increased from 0 to 1% but decreased linearly from 1 to 3% dietary fish oil. Milk protein percentages (3.17, 3.19, 3.21, and 3.17) were similar for all treatments. When the 2% fish oil diet was fed, concentrations of conjugated linoleic acid and transvaccenic acid in milk fat increased to 356% (to 2.2 g/ 100 g of total fatty acids) and 502% (to 6.1 g/100 g), respectively, of amounts when 0% fish oil was fed. There were no additional increases in these fatty acids when cows were fed 3% fish oil. The n-3 fatty acids increased from a trace to over 1 g/100 g of milk fatty acids, when the 3% fish oil diet was fed. Fish oil supplementation to diets of dairy cows increased the conjugated linoleic acid, transvaccenic acid, and n-3 fatty acids in milk.
引用
收藏
页码:2620 / 2628
页数:9
相关论文
共 36 条
[1]  
[Anonymous], 1989, Nutrient requirements of dairy cattle
[2]  
*ASS OFF AN CHEM, 1990, OFF METH AN
[3]   18/1 N7 FATTY-ACIDS INHIBIT GROWTH AND DECREASE INOSITOL PHOSPHATE RELEASE IN HT-29 CELLS COMPARED TO N9 FATTY-ACIDS [J].
AWAD, AB ;
HERRMANN, T ;
FINK, CS ;
HORVATH, PJ .
CANCER LETTERS, 1995, 91 (01) :55-61
[4]  
BLIGH EG, 1959, CAN J BIOCHEM PHYS, V37, P911
[5]  
BYERS FM, 1988, RUMINANT ANIMAL DIGE, P300
[6]   Effect of fish oil and monensin on milk composition in dairy cows [J].
Cant, JP ;
Fredeen, AH ;
MacIntyre, T ;
Gunn, J ;
Crowe, N .
CANADIAN JOURNAL OF ANIMAL SCIENCE, 1997, 77 (01) :125-131
[7]  
Chin S. F., 1992, Journal of Food Composition and Analysis, V5, P185, DOI 10.1016/0889-1575(92)90037-K
[8]   Fish consumption and the 30-year risk of fatal myocardial infarction [J].
Daviglus, ML ;
Stamler, J ;
Orencia, AJ ;
Dyer, AR ;
Liu, K ;
Greenland, P ;
Walsh, MK ;
Morris, D ;
Shekelle, RB .
NEW ENGLAND JOURNAL OF MEDICINE, 1997, 336 (15) :1046-1053
[9]   The effect of vitamin E supplementation of cow diets containing rapeseed and linseed on the prevention of milk fat oxidation [J].
Focant, M ;
Mignolet, E ;
Marique, M ;
Clabots, F ;
Breyne, T ;
Dalemans, D ;
Larondelle, Y .
JOURNAL OF DAIRY SCIENCE, 1998, 81 (04) :1095-1101
[10]   Dietary marine algae (Schizochytrium sp.) increases concentrations of conjugated linoleic, docosahexaenoic and transvaccenic acids in milk of dairy cows [J].
Franklin, ST ;
Martin, KR ;
Baer, RJ ;
Schingoethe, DJ ;
Hippen, AR .
JOURNAL OF NUTRITION, 1999, 129 (11) :2048-2054