Keywords: greenhouse gases, bypass protein, digestibility, cows
The article considers the ways of reducing the formation of greenhouse gases and ammonia in the digestive tract of lactating cows. Reduction of emissions is based on increasing the absorption of nutrients by animals due to the use of our specialized additive that rumen escape proteinand starch protected from disintegration in the rumen. The effect of increasing the absorption of nutrients was confirmed in an experiment on fistula animals. It was found that feeding the developed supplement led to some changes in the digestibility of dietary nutrients. In the rumen, the digestibility of crude protein decreased from 6.52 ± 10.047 % to –15.62 ± 3.047 % and crude fat – from 13.49 ± 10.545 % to 1.33 ± 9.611 %, that indicates an increase in microbial synthesis; and the digestibility of crude fiber and nitrogen-free extractives increased from 73.98 ± 6.995 % to 77.82 ± 8.920 % and from 71.29 ± 5.629 % to 80.71 ± 8.878 %, respectively. Tests of the developed additive under production conditions were also carried out. The productivity of experimental cows directly depended on the level of introduction of the additive TEP-mix to the diet. Along with the increase in milk yield of experimental animals, there was a pronounced trend of increasing fat content and protein content in milk, which indicated a significant improvement in protein and energy nutrition in experimental cows. It was found that during the experiment the milk yield of cows probably increased by 7-137 %. The use of the supplement provided lengthening of the lactation peak plateau and lactation curve from 52 to 61 – 65 days, or 22-25 %. There was also a positive effect of the supplement on the prevention of the syndrome of weight loss of cows; there was a reduction in its losses during the first 100 days of lactation by more than 22-27%. Increasing the nutrient uptake of nutrients by cows provided an equivalent reduction in greenhouse gas and ammonia emissions. It was found that when using the additive TEP-mix in feeding lactating cows (feeding 1 kg of additive TEP-mix instead of 1 kg of standard feed) productivity increases by 2.15 kg of milk and reduces emissions of carbon dioxide by 522.54 ± 13.41 g and ammonia per 41 ± 0.13 g per day.
- Balash, A., Batiz, G., Bridl, E., Chaki, T., Gombosh, Sh., & Kjurtfalvi, A. (1994). Soderzhanie, kormlenie i vazhneyshie veterinarnye voprosy pri razvedenii golshtino-frizskoy porody skota [Maintenance, feeding and the most important veterinary issues in breeding Holstein-Friesian cattle]. Budapesht: Agrota [in Russian].
- Kurilov, N. V. (1987). Izuchenie pishchevareniya u zhvachnykh [Digestion study in ruminants]. Borovsk: VNIIFBiP, [in Russian].
- Kharitonov, E. L. (2011). Fiziologiya i biokhimiya pitaniya molochnykh korov [Physiology and biochemistry of nutrition of dairy cows]. Moscow:Optima–servis[in Russian].
- Deckardt, K., Khol-Parisini, A., & Zebeli, O. (2013). Peculiarities of Enhancing Resistant Starch in Ruminants Using Chemical Methods: Opportunities and Challenges.Nutrients, 5(6), 1970–1988. doi: 10.3390 / nu5061970
- Matthe A., Lebzien P., & Flachowsky G. (2000). On the relevance of bypass-starch for the glucose supply of high-yielding dairy cows. Übersichten zur Tierernährung, 28(1), 1–64.
- Nocek, J. E., & Tamminga, S. (1991). Site of digestion of starch in the gastrointestinal tract of dairy cows and its effect on milk yield and composition. Journal of Dairy Science, 74(10), 3598–3629. doi: 10.3168/jds.S0022-0302(91)78552-4.
- Zebeli, Q., Mansmann, D., Steingass, H., & Ametaj, B. N. (2010). Balancing diets for physically effective fibre and ruminally degradable starch: A key to lower the risk of sub-acute rumen acidosis and improve productivity of dairy cattle. Livestock Science, 127, 1–10. doi:10.1016 / J.LIVSCI.2009.09.003
- Yeletska, T. O., Vasylevskyi, M. V., Berestova, L. Ye., Minenko, H. V., Abdulaieva M. S. (2016). Vplyv baipas-produktu na protsesy travlennia u velykoi rohatoi khudoby [Influence of bypass product on digestion processes in cattle]. Biolohiia tvaryn. Lviv, Institute of Animal Biology NAAS 18(3), 23–29. doi: org/10.15407/animbiol18.03.023
- Rudenko, E.V., Shapovalov, S.O., Rosso, L.M., Bredikhina, T.O., Rusko, N.P., Tsyupko, V.V., Gritsina, O.G. Naukovo-metodychni osnovy monitorynhu yakosti syroho moloka [Scientific and methodological bases of monitoring the quality of raw milk]. (2010). Kharkiv: Instytut tvarynnytstva NAAN [in Ukranian].
- Bogatova, O. V., & Dogareva, N. G. (2004). Khimiya i fizika moloka [Chemistry and Physics of Milk]. Orenburg: GOU OGU [in Russian].
- Kalinin, F. L., Lobov, V. P., & Zhidkov, V. A. (1997). Spravochnik po biohimii [Biochemistry Handbook]. Kyiv: Naukova dumka [in Russian].