Cosmic energies and mankind: graphs for reflection - стр. 13

So what, is the reason in the Earth's magnetic field?

Most likely this is a superposition of many factors, including genetic ones. This conclusion is based upon the analysis of high-yielding breeds of cows that were kept on the same farm. Milk yields there varied depending on the Earth's magnetic field intensity in the region where they were. They were located in one place, but their genetics was different. The statistics is impressive – more than a thousand cows of each breed.

See V.A. Afanasiev, S.M. Chibisov, A.A. Nikishov, A.Yu. Shitikov. Productivity of high-yielding cows of black-motley and red breeds at various helio-geomagnetic activity.

One of the conclusions of this study:

"Highly productive animals, obviously, possess more stable metabolism than average over the herd. Therefore, they, apparently, were less exposed to the influence of the Sun, but were more sensitive to the Earth's magnetic field intensity".

The most important final conclusions of this study are the following:

"1. The experiment revealed a strong relationship between the provided… indicators of annual average productivity and annual average geomagnetic activity data (Ar – index).

2. A negative value of r = from -0.37 to -0.74 was determined at p ≥ 0.95, the relationship between the provided productivity of red breed animals and geomagnetic activity, which can be interpreted as a trend of decreasing productivity at the increase of geomagnetic activity, except 3-4 years close to the change of solar magnetic poles, i.e. the years of maximum solar activity.

3. The correlation between the adjusted productivity of black-motley breed and geomagnetic activity is positive with r = from 0.53 to 0.74 at p ≥ 0.975, which can be interpreted as a trend of increasing productivity at the increase of geomagnetic activity.

4. No valid correlation was observed between the solar activity and the yield of high-yielding cows of black-motley and red breeds".

Different breeds react differently to the geomagnetic situation and the Earth's rotational velocity. Here is one of the graphs of that study.

The authors discovered a special asynchrony of milk yields in the period "when the solar magnetic poles reversal takes place. In 1969, on the Northern part of the Sun, the South pole S turned to the North one N, whereas in 1980 the North pole N turned to S. Exactly during these years the greatest asynchrony of the curves takes place".

Intensity of the northern and southern magnetic poles on the Sun has a statistical relationship with the growth of tree rings of different clusters.