Effects of Fatty Acids on Digestibility and Feed Intake in Lactating Dairy Cows

摘要

It is important to consider rumen metabolism of FA both because of biohydrogenation and hydrolysis to free FA.Measuring FA digestibility is complicated by a number of technical issues, but overall there appears to be little difference in digestibilitybetween FA.Fatty acid digestibility is variable and may be impacted by level of fat and other associative effects, although these are not well characterized.Highly enriched saturated fat supplements with very low unsaturated FA may have a strong physical structure that reduces digestibility.Calcium salts of FA decrease intake and enriched palmitic acid supplements have also decreased intake in some, but not all, experiments.