Effects of fatty acid supplements on feed intake, and feeding and chewing behavior of lactating dairy cows

Journal of Dairy Science
K J Harvatine, M S Allen

Abstract

Saturated and unsaturated fatty acid supplements (FS) were evaluated for effects on feed intake, meal patterns, and chewing behavior. Eight ruminally and duodenally cannulated cows were used in a replicated 4 x 4 Latin square design experiment with 21-d periods. Treatments were control and a linear substitution of 2.5% fatty acids from supplemented saturated FS (SAT; prilled, hydrogenated free fatty acids) for partially unsaturated FS (UNS; calcium soaps of long-chain fatty acids). All rations contained identical forage and concentrate components including 37.2% forage and 13.5% cottonseed. Dry matter intake for SAT was not different from control, whereas increasing unsaturated FS linearly decreased dry matter intake by 3.2 kg. Wet weight of ruminal digesta decreased linearly up to 11.3 kg (13%) with increasing unsaturated FS. Adding supplementary fatty acids did not change meal number, meal length, or time between meals compared with control, but increasing unsaturated FS decreased meal size 0.22 kg (9%) within FS. The SAT treatment increased time spent ruminating by 56 (10%) and 42 (7%) min/d compared with control and UNS, respectively. Increasing saturated FS did not affect frequency of rumination bouts or interval between b...Continue Reading

References

Sep 1, 1991·Journal of Dairy Science·Z WuD L Palmquist
Aug 1, 1994·The Journal of Nutrition·R D Reidelberger
Apr 1, 1994·Journal of Dairy Science·R A ChristensenJ H Clark
Feb 18, 2006·The Journal of Nutrition·Kevin J Harvatine, Michael S Allen
Mar 2, 2006·Journal of Dairy Science·K J Harvatine, M S Allen

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Citations

Mar 1, 2012·Asian-Australasian Journal of Animal Sciences·Toktam S VafaMohsen Danesh Mesgaran
Feb 27, 2017·Reproduction : the Official Journal of the Society for the Study of Fertility·Letícia D P SinedinoJosé E P Santos
Jun 21, 2016·Journal of Dairy Science·J A D R N AppuhamyP J Kononoff
Mar 2, 2006·Journal of Dairy Science·K J Harvatine, M S Allen
Feb 26, 2019·Journal of Dairy Science· HifzulrahmanM N Haque
Nov 11, 2019·Journal of Dairy Science·A MenschingA R Sharifi
Sep 19, 2019·Animal Nutrition·Ahmed E Kholif
Mar 10, 2021·Tropical Animal Health and Production·Lara Maria Santos BrantJosé Esler de Freitas Júnior

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