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The Use of Essential Oils as Rumen Modifier in Dairy Cows Dewi Ayu Ratih Daning; C Hanim; B P Widyobroto; L M Yusiati
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 30, No 4 (2020): December 2020
Publisher : Indonesian Center for Animal Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.987 KB) | DOI: 10.14334/wartazoa.v30i4.2524

Abstract

Feed efficiency is essential for dairy cows because it can increase production and quality of milk, and reduce methane emissions in the environment. One of the strategies on increasing feed efficiency is using rumen modifier. Essential oils have antimicrobial activities and have been used in rumen modifier in dairy cows. The aim of this paper is to review several studies on the utilization of essential oils as feed additive to enhance production and quality of milk of dairy cow. Based on some research reports, using essential oils which contained thymol, eugenol, cinnamaldehyde and carvacrol in dairy cattle feed decreased the population of protozoa, methanogens, proteolytic, and biohydrogenase bacteria. The impact of engineering of the rumen microbial population has led to optimal rumen fermentation resulted in the efficiency of carbohydrate, protein, and fat utilizations. It can be concluded that essential oils are potential as rumen modifier by inhibit methanogenesis, increase propionate, energy efficiency and ruminal by pass protein. The inconsistent results on milk production and milk fat requires further research to study deeper the effect of dosage and type of essential oils on dairy cows  performance.
Ketahanan Asam Lemak Tidak Jenuh dalam Crude Palm Oil Terproteksi terhadap Aktivitas Mikrob Rumen Domba in Vitro N C Tiven; L M Yusiati; Rusman Rusman; U Santoso
Media Peternakan Vol. 34 No. 1 (2011): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (170.885 KB) | DOI: 10.5398/medpet.2011.34.1.42

Abstract

The experiment was aimed to study the composition of unsaturated fatty acid, fermentation parameter and microbial activity in the rumen-buffer mixture when protected CPO with casein and formaldehyde was incubated in the in vitro fermentation. CPO and milk powder (1:2) were mixed, added technical formaldehyde 0%, 1%, 2%, and 3% by weight of blend, mixed again to form CCPO. The amount of 0% (0 mg), 1.5% (4.5 mg), 3% (9 mg), 4.5% (13.5 mg) and 6% (18 mg) CCPO was inserted into fermenter bottles containing napier grass and rice bran (60:40), was tested in vitro. The data were analyzed by completely randomized design with factorial pattern 4 x 5 (level of formaldehyde as factor A and level of CPO as factor B). The different of treatments were tested by Duncan's new multiple range test.  Result shows that the increase of formaldehyde level could increase unsaturated fatty acids content, CMC-ase activity, microbial protein and number of protozoa, but decreased NH3, VFA, and pH of rumen fluid. The increase of CPO level also increased fatty acid composition and microbial protein, but decreased NH3, VFA, and pH, CMC-ase activity and number of protozoa in rumen fluid. It can be concluded that encapsulated CPO with formaldehyde increased unsaturated fatty acid composition and microbial activity, but decreased fermentation parameters.