THE DESPAIR OF HORSES !

In horse’s world , leisure horse has a lot of pain to survive. His involvement with Men has put him both, physicaly and mentaly , in danger as well as reducing his life expectancy.

What is horse’s life expectancy ?

The life expectancy is the lenght life average. This calculation changes in different circumstancies (background). The life expectancy of a racehorse is shorter than a free horse.

The MAN is the only predator of domestic horses. He can eat his meat and by tradition or by ignorance, he makes it suffer a lot.

Several studies say the life expectancy is less 15 years old. The life expectancy vary between a horse in a box and a free horse, between the race world and the rural life.

The insurance companies consider that the life expectancy is less than 10 years. So they take amazing Premiums for a oldier horse and they refuse to insure a 17 years old horse.

We know that the life’s conditions are important and decisive concerning the life expectancy.

We can see a distance between the life expectancy and the kind’s longevity..

The longevity is what the nature give us biologically. Life expectancy is what actually happens, Men’s predicted longevity is 116 years. but his life expectancy is 42 years in Africa and 80 years in Europe.

In 1993, Bobick J.E. and M. Peffer, decide on the longevity of a free equus caballus to 62 years old and the same in captivity to 50 years old. This analysis meet up with the thesis about the longevity of mammals.

The smaller of them is the shrew mouse and the biggest is the blue whale. Why are they interested by these 2 extremes ?

The rest cardiac frequency determine the longevity to the mammals. Higher is the cardiac frequency, shorter is the longevity. Smaller is the hart (the pump), quicker it must beat.

The cardiac pace is conversely proportional to the longevity. The small mammals live biologically shorter than the big. The average number of cardiac beats during a life is constant in all the mammals .

It is 9 x 10⁸ cardiac beats by life.

Smaller is the body, more energy it needs to keep the minimum of physical activity and the temperature necessary for life. Cardiac rhythm and breathing rhythm are very close.

Shrew-mouse

Bodily mass : 2 g

Cardiac mass : 12 mg

Cardiac frequency :1000 bpm

Longevity : 1 year

Domestic horse

Bodily mass : 450 kg

Cardiac mass : 5 kg

Cardiac frequency :40 bpm

Longevity : 50 jears

Blue whale

Bodily mass : 100 000 kg

Cardiac mass : 600 kg

Cardiac frequency : 6 bpm

Longevity : 120 years