References
- Aguilar M., Hanigan M.D., Tucker H.A., Jones B.L., Garbade S.K., Mc Gill - iard M.L., Stallings C.C., Knowlton K.F., James R.E. (2012). Cow and herd variation in milk urea nitrogen concentrations in lactating dairy cattle. J. Dairy Sci., 95: 7261-7268.Anonymous(2010). European Commission Directorate-General for Agriculture and Rural Development. An analysis of the EUorganic sector, 80 pp.
- Brzóska F. (2008). Milk production and composition as influenced by soybean meal, rapeseed meal or rapeseed cake in concentrates for dairy cows. Ann. Anim. Sci., 8: 133-143.
- Butler W.R., Calaman J.J., Beam S.W. (1996). Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. J. Anim. Sci., 74: 858-865.
- Chen P., Ji P., Li S.L. (2008) Effects of feeding extruded soybean, ground canola seed and whole cottonseed on ruminal fermentation, performance and milk fatty acid profile in early lactation dairy cows. Asian-Aust. J. Anim. Sci., 21: 204-213.
- Chowdhury S.A., Rexroth H., Kijora C., Peters K.J. (2002). Lactation performance of German Fawn goat in relation to feeding level and dietary protein protection. Asian-Aust. J. Anim. Sci., 15: 222-237.
- Cortes C., Palin M.F., Gagnon N., Benchaar C., Lacasse P., Petit H.V. (2012). Mammary gene expression and activity of antioxidant enzymes and concentration of the mammalian lignan enterolactone in milk and plasma of dairy cows fed flax lignans and infused with flax oil in the abomasum. Br. J. Nutr., 108: 1390-1398.
- CSN EN ISO 13366-2 (2007). Milk - determination of somatic cells (in Czech). Praha, 36 pp.
- CSN ISO 2446 (2010). Milk - determination of fat content (in Czech). Praha, 16 pp.
- CSN 57 0530 (1974). Methods for testing of milk and liquid dairy products (in Czech). Praha, 108 pp.
- Danes M.A.C., Chagas L.J., Pedroso A.M., Santos F.A.P. (2013). Effect of protein supplementation on milk production and metabolism of dairy cows grazing tropical grass. J. Dairy Sci., 96: 407-419.
- Faverdin P., M ' Hamed D., Verite R. (2003). Effects of metabolizable protein on intake and milk production of dairy cows independent of effects on ruminal digestion. Anim. Sci., 76: 137-146.
- Gath V.P., Crowe M.A., O ' Callaghan D., Boland M.P., Duffy P., Lonergan P., Mul- ligan F.J. (2012). Effects of diet type on establishment of pregnancy and embryo development in beef heifers. Anim. Reprod. Sci., 133: 139-145.
- Homolka P., Kudrna P. (2006). Replacement of animal feed for ruminants (in Czech). Výzkumný ústav živočišné výroby. Praha - Uhříněves, Czech Republic, 62 pp.
- Hoshide A.K., Halloran J.M., Kersbergen R.J., Griffin T.S., De Fauw S.L., La Gasse B.J., Jain S. (2011). Effects of stored feed cropping systems and farm size on the profitability of Maine organic dairy farm simulations. J. Dairy Sci., 94: 5710-5723.
- Lelyon B., Chatellier V., Daniel K. (2012). Production strategies after the end of milk quotas: an analysis based on bio-economic modeling. INRA Prod. Anim., 25: 67-76.
- Madzimure J., Musimurimwa C., Chivandi E., Gwiriri L., Mamhare E. (2011). Milk yield and quality in Guernsey cows fed cottonseed cake-based diets partially substituted with
- baobab (Adansonia digitata L.) seed cake. Trop. Anim. Health Prod., 43: 77-82.
- Marston S.P., Clark G.W., Anderson G.W. (2011). Maximizing profit on New England organic dairy farms: An economic comparison of 4 total mixed rations for organic Holsteins and Jerseys. J. Dairy Sci., 94: 3184-3201.
- Mogensen L., Kristensen T. (2002). Effect of barley or rape seed cake as supplement to silage for high-yielding organic dairy cows. Acta Agricult. Scand. Section A - Anim. Sci., 52: 243-252.
- Mogensen L., Ingvartsen K.L., Kristensen T., Seested S., Thamsborg S.M. (2004). Organic dairy production based on rapeseed, rapeseed cake or cereals as supplement to silage ad libitum. Acta Agricult. Scand. Section A - Anim. Sci., 54: 81-93.
- Osięgłowski S., Strzetelski J.A., Zymon M., Kowalczyk J. (2007). Effect of fish oil and high or low linolenic acid linseed or rapeseed on fatty acid composition of cow's milk. Ann. Anim. Sci., 7: 63-74.
- Petit H.V., Gagnon N. (2011). Production performance and milk composition of dairy cows fed different concentrations of flax hulls. Anim. Feed. Sci. Technol., 169: 46-52.
- Shingfield K.J., Vanhatalo A., Huhtanen P. (2003). Comparison of heat-treated rapeseed expeller and solvent-extracted soya-bean meal as protein supplements for dairy cows given grass silage-based diets. Anim. Sci., 77: 305-317.Tetens J., Seidenspinner T., Buttchereit N., Thaller G. (2013). Whole-genome association study for energy balance and fat/protein ratio in German Holstein bull dams. Anim. Genet., 44: 1-8.
- Trinacty J., Krizova L., Richter M., Cerny V., Riha J. (2009). Effect of rumen-protected methionine, lysine or both on milk production and plasma amino acids of high-yielding dairy cows. Czech J. Anim. Sci., 54: 239-248.
- Velik M., Steinwidder A., Knaus W.F. (2008). Lupin-pea cereal mixture or cereals as supplements for organic dairy cows. Biol. Agric. Hortic., 25: 339-351.
- Willer H., Kilcher L. (2009). Editors. The World of Organic Agriculture - Statistics and Emerging Trends 2009. IFOAM, Bonn, Fi BL, Frick, 304 pp.
- Zeman L., Dolezal P., Kopriva A., Mrkvicova E., Prochazkova J., Ryant P., Skla - danka J., Strakova E., Suchy P., Vesely P., Zelenka J. (2006). Nutrition and feeding of livestock (in Czech). Praha, Czech Republic, Profi Press, 360 pp.
- Zeman L., Simecek K., Krasa A., Simek M., Lossman J., Trinacty J., Rudolfo- va S., Vesely P., Hap I., Dolezal P., Kracmar S., Tvrznik P., Michele P., Ze - manova D., Siske V. (1995). Feedstuffs (in Czech). Pohořelice, Czech Republic, SPRINT Znojmo, 465 pp.