Volume: 1, 2022
1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: A007
DOI: https://doi.org/10.24326/ICDSUPL1.A007
Published online: 26 April 2022
ICDSUPL, 1, A007 (2022)
Effectiveness of production of cows fed with rations supplemented with oregano (Origanum vulgare)
Julia Fabjanowska1*, Renata Klebaniuk1, Edyta Kowalczuk-Vasilev1, Agata Bielak1, Szymon Milewski1, Maciej Bąkowski1, Magdalena Olcha1
1 Institute of Animal Nutrition and Bromatology, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
* Corresponding author: julia.fabjanowska@up.lublin.pl
Abstract
Balanced rations meeting the needs of dairy cows are one of the basic determinants of high yields. The animal must be provided feed not only in appropriate amounts but also with high quality. The use of feed components with targeted action can contribute to improvement of the milk yield and achievement of the desired modification of the chemical composition of milk. To verify this hypothesis, the investigations were focused on assessment of the milk yield and composition, in particular the fatty acid profile in the fat of milk from cows receiving rations supplemented with oregano (Origanum vulgare). The experiment involved 30 Holstein-Friesian black and white dairy cows starting their third lactation. Standardized dried oregano administered to the experimental dairy cows in the dose of 5% of the concentrate mixture was the experimental factor. During the experiment, the nutritional value and quality of the rations consumed by the cows were assessed. Additionally, the yield and composition of milk were determined in samples taken for analysis every 4 weeks. The content of basic nutrients was determined in the feed samples according to AOAC (2011). The nutritional value of the feed was estimated in INRA units using the Winwar 1.6 computer program. The milk yield was assessed using a Protest 1-cylinder milk meter. The milk samples were analyzed for the protein, fat, and lactose contents as well as the somatic cell count and the number of bacterial colonies with the use of a Bentley Chemspec 150 device. The fatty acid profile of milk fat was determined using a Varian 3800 gas chromatograph. The supplementation of the ration with oregano (Origanum vulgare) resulted in slight differences in the yield and basic composition of the milk. Significant differences were found in the content of fatty acids and groups of fatty acids in the fat of milk from cows receiving 5% of oregano in the concentrate mixture, compared to the milk samples from cows fed standard nutrition. The milk from cows receiving the oregano-supplemented diet had lower contents of saturated fatty acids (SFA) and higher contents of monounsaturated acids (MUFA), but the differences were significant only in the first phase of lactation.
How to cite
J. Fabjanowska, R. Klebaniuk, E. Kowalczuk-Vasilev, A. Bielak, S. Milewski, M. Bąkowski, M. Olcha, 2022. Effectiveness of production of cows fed with rations supplemented with oregano (Origanum vulgare). In: 1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL1/A007