Study of the influence of the type of higher nervous activity on the secretion of organic components of milk Mechanism of milk secretion regulation
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The purpose of the experiment was to study the influence of the type of higher nervous activity (HNA) on the secretion of organic components of milk in various milking conditions. Under the influence of the unconditioned stimulus "inadequate udder preparation" in the milk of machine milk in cows in the morning milking: I HNA type - secretion and percentage of milk fat and the ratio of percentage of fat to percentage of lactose decreases, while in all other types there is a decrease in the percentage of fat and protein. In the unbalanced (II) type, the average duration of the milk flow cycle decreases; in the inert (III) and weak (IV) type, the concentration of fat and lactose decreases, and the ratio of fat to lactose in the latter. It is advisable to characterize the stress resistance of animals based on knowledge of their types of HNA. At the same time, the complexity of their determination by known methods should be noted. In dairy farming, it is necessary to provide for the presence of all types of HNA among the cows and take into account their individual characteristics in terms of resistance to stress, the level of milk production and milk yield. It is recommended to apply the model of dairy cows developed by us to objectively determine the type of their stress resistance in production conditions. The presented patterns of changes in the secretory function of the mammary gland under the influence of tested stress factors on dairy cows of different types of higher nervous activity should be used to develop express methods for determining the types of stress resistance in animals and completing the herds of dairy farms.
Kézér, F.L., Kovács, L., Tőzsér, J. Step behaviour and autonomic nervous system activity in multiparous dairy cows during milking in a herringbone milking system. Animal, 2015, 9(8): 1393-1396. https://doi.org/10.1017/S1751731115000130
Khalid, F., Saeed, M., Majeed, M., Nazir, F., Khalid, S., Amin, M., Nasir, M., & Fatima, A. Enhanced Antioxidant Potential of Supplemented Yogurt with Sea Buckthorn. Food Science And Applied Biotechnology, 2022, 5(1): 87-98. https://doi.org/10.30721/fsab2022.v5.i1.160
Marçal-Pedroza, M.G., Campos, M.M., Pereira, L.G.R., Machado, F.S., Tomich, T.R., Paranhos da Costae, M.J.R., Sant'Anna, A.C. Consistency of temperament traits and their relationships with milk yield in lactating primiparous F1 Holstein - Gyr cows. Applied Animal Behaviour Science, 2020, 222(1): 104881. https://doi.org/10.1016/j.applanim.2019.104881
Marçal-Pedroza, M.G., Campos, M.M., Sacramento, J.P., Pereira, L.G.R., Machado, F.S., Tomich, T.R., Paranhos, da Costae M.J.R., & Sant'Anna, A.C. Are dairy cows with a more reactive temperament less efficient in energetic metabolism and do they produce more enteric methane? Animal, 2021, 15(6): 100224. https://doi.org/10.1016/j.animal.2021.100224
Mincu, M., Gavojdian, D., Nicolae, I., Olteanu, A., Vlagioiu, C. Effects of milking temperament of dairy cows on production and reproduction efficiency under tied stall housing. Journal of Veterinary Behavior, 2021, 44(7-8): 12-17. https://doi.org/10.1016/j.jveb.2021.05.010
Silva, D.C., Passini, R. Physiological responses of dairy cows as a function of environment in holding pen. Journal of the Brazilian Association of Agricultural Engineering, 2017, 37(02): 206-214/2017. https://doi.org/10.1590/1809-4430-Eng.Agric.v37n2p206-214/2017
Stephansen, R.S., Fogh, A., Norberg, E. Genetic parameters for handling and milking temperament in Danish first-parity Holstein cows. Journal of Dairy Science, 2018, 101(12): 11033-11039. https://doi.org/10.3168/jds.2018-14804
Studenica, A., Märtlbauer, E., & Mulliqi-Osmani, G. The prevalence of bacterial contaminants in artisanal cheese sold in informal markets. The case of Kosovo. Food Science And Applied Biotechnology, 2022, 5(1): 77-86. https://doi.org/10.30721/fsab2022.v5.i1.168
Sutherland, M.A., Rogers, A.R., Verkerk, G.A. The effect of temperament and responsiveness towards humans on the behavior, physiology and milk production of multi-parous dairy cows in a familiar and novel milking environment. Physiology & Behavior, 2012, 107(3): 329-337. https://doi.org/10.1016/j.physbeh.2012.07.013
Vedovatto, M., Faria, F.J.C., Costa, D.S., Cooke, R.F., Sanchez, J.M.D., Moriel, P., Coelho, R.N., Franco, G.L. Effects of temperament on body parameters, ovarian structures and inflammatory response in grazing Nellore cows following fixed-time artificial insemination. Journal of Veterinary Behavior, 2021, 44(7-8): 50-54. https://doi.org/10.1016/j.jveb.2021.03.005
Wenzel, C., Schonreiter-Fischer, S., Unshelm, J. Studies on step-kick behavior and stress of cows during milking in an automatic milking system. Livestock Production Science, 2003, 83(2-3): 237-246. https://doi.org/10.1016/S0301-6226(03)00109-X
Zheleva, N. Bioactive components of donkey milk. Food Science And Applied Biotechnology, 2022, 5(2): 219-231. https://doi.org/10.30721/fsab2022.v5.i2.212
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