Effect of nervous activities on milk flow processin cows

Journal of Livestock Science

article

V.T. Golovan¹  D.V. Osepchuk¹  D.A. Yurin¹ 

[1] Krasnodar Research Centre for Animal Husbandry and Veterinary Medicine

关键词: milk flow process, milking temperament;    behavioral reactivity;    dairy cattle;    animal welfare;   

DOI  :  10.33259/JLivestSci.2022.25-32

学科分类：农业科学（综合）

来源: Journal of Livestock Science

【 摘 要 】

The aim of the research was to study the effect of the type of higher nervous activity on the excretory functionof the mammary gland. Cows are classified according to the types of higher nervous activity (HNA): Type I - strong,balanced, mobile; Type II - strong unbalanced; Type III - strong inert; Type IV – weak breaking. Under standardmilking conditions, in cows of the I HNA type there were observed: a tendency or a significant increase in single milkyield up to 14.4% and milking time up to 23.4% in the morning milking in comparison with other types. Theconditioned stimulus “foreign” milkmaid, when applied once or twice, caused an increase in the number of milk flowcycles in I HNA type cows to 43.6% per lunchtime milking; and in type II, an increase in their number to 113% with adecrease in the duration of one cycle to 69.6% both in the morning and lunchtime milking, compared with standardconditions. The following positively correlates with the intensity of milk flow: single milk yield, the milk flow rate forthe first and second minutes of milking and maximum, the percentage of milk yield for the first and second minutes, thenumber of milk production cycles for two, three minutes and in general for milking. Negatively correlates the time ofmilk yield of the first 50 and 100 g of milk, the achievement of the maximum rate of milk flow and the total milkingtime. The process of inhibition of milk flow weakens these connections. The type of HNA in cows affects therelationship of indicators of milk flow both under conditions of varying degrees of readiness for milk flow, and actionof conditioned and unconditioned stimuli on the animals used in the experiment.

【 授权许可】

Unknown