Effect of diets containing linoleic acid- or oleic acid-rich oils on ruminal fermentation and nutrient digestibility, and performance and fatty acid composition of adipose and muscle tissues of finishing cattle1
- 1 June 2005
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 83 (6), 1312-1321
- https://doi.org/10.2527/2005.8361312x
Abstract
Two trials were conducted to determine the effect of linoleic acid- or oleic acid-rich safflower oil on ruminal fermentation, nutrient digestion, feedlot performance, carcass characteristics, and fatty acid composition of adipose and muscle tissues of beef cattle. In both trials, cattle were fed a finishing diet based on barley grain, wheat silage, and alfalfa hay. Oils were fed at 5% of dietary DM. In a metabolism trial, four ruminally and duodenally cannulated Angus crossbred steers were subjected to linoleic acid-rich oil or oleic acid-rich oil in a crossover design with covariate periods (no oil supplementation). In a finishing trial, 16 individually fed Angus crossbred steers and heifers (eight per diet) received linoleic acid- or oleic acid-rich oils during the last 86 d of a 116-d feeding period. Ruminal pH, ammonia concentration, protozoal counts, major VFA concentrations, acetate-to-propionate ratio, polysaccharide-degrading activities, microbial N flow to the duodenum, and the efficiency of microbial N synthesis in the rumen were not affected (P = 0.18 to 0.96) by type of oil. Type of oil had no effect on total-tract apparent digestion of nutrients (P = 0.46 to 0.98). Ruminal true nutrient digestibilities did not differ between oils (P = 0.15 to 0.99), except that the linoleic acid-rich oil decreased (P = 0.05) NDF digestibility. Dry matter intake, ADG, G:F, and carcass characteristics did not differ (P = 0.11 to 0.84) between the two oils. Overall, the difference in dietary fatty acids provided to the cattle produced few changes in tissue fatty acids. Weight percentages of c9t11 CLA were unaltered by the addition of linoleic acid to the diet compared with oleic acid, probably as a result of low vaccenic acid production in the rumen, as the pathway of biohydrogenation was apparently primarily through the t10 pathway.Keywords
This publication has 41 references indexed in Scilit:
- NUTRITIONAL REGULATION OF MILK FAT SYNTHESISAnnual Review of Nutrition, 2003
- Effect of dietary sunflower oil and vitamin E on Beef cattle performance, carcass characteristics and meat qualityCanadian Journal of Animal Science, 2003
- DIETARY CONJUGATED LINOLEIC ACID IN HEALTH: Physiological Effects and Mechanisms of ActionAnnual Review of Nutrition, 2002
- Effect of diet, digesta processing, freezing and extraction procedure on some polysaccharide-degrading activities of ruminal contentsCanadian Journal of Animal Science, 1999
- Microbe-microbe interactionsPublished by Springer Science and Business Media LLC ,1997
- Quantitative Measurement of Total Starch in Cereal Flours and ProductsJournal of Cereal Science, 1994
- A RAPID PROCEDURE FOR PURINE MEASUREMENT AND ITS USE FOR ESTIMATING NET RUMINAL PROTEIN SYNTHESISCanadian Journal of Animal Science, 1986
- Digestion and synthesis in the rumen of sheep given diets supplemented with free and protected oilsBritish Journal of Nutrition, 1983
- Changes in the Lipids of Human Milk from 2 to 16 Weeks PostpartumJournal of Pediatric Gastroenterology and Nutrition, 1982
- Investigation of chromium, cerium and cobalt as markers in digesta. Rate of passage studiesJournal of the Science of Food and Agriculture, 1980