Dynamics of variability of the animal heart rhythm and its correlation with economic parameters and age

Open Access

Table 2.

Age-related changes in the intensity of milk flow in cows with different IVT, M ± m

SI, c.u.	IVT inSI	Intensity of milk flow, kg / min
SI, c.u.	IVT inSI	2016	2018	Remainder	%
lessthan 50	Vagotony	1.7±0.2^*	1.4±0.2^*	-0.3	18
51-150	Normotonia	1.9±0.2^*	1.9±0.2^*	0	-
151-250	Sympathicotonia	2.2±0.3^*	2.0±0.3^*	- 0.2	9
more than 251	Hypersympathicotonia	2.8±0.7^*	2.3±0.5^*	- 0.5	18

Note: * is significant difference in intensity of milk flow in 2016 and 2018 relative to the initial vegetative tonus (IVT) – p< 0.05

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