For example, the life span of sheep is 10 year in natural conditions and 15 year in captivity.
For example, the average life expectancy of a horse is 30-35 years old, and the longest is over 60 years old. The service age is 3 ~ 15 years old, and some can reach 20 years old. (Wild horses are basically extinct)
For example, the life span of a lion is 15 years, and the life span in captivity can reach 30 years.
In fact, the above figures are unscientific and have great practical limitations and no practical significance.
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Let's say sheep, a kind of livestock. How long can domestic sheep live? In fact, in the flock, a large number of newborn sheep will not live to 1 year, but may be half a year or even longer, and will be killed before winter comes-it is not "economical" to raise in winter, so it is necessary to kill some before winter to save costs and recover some capital.
Most other people will not survive the second year. Because the rapid growth period of sheep is limited, after the rapid growth period, the unit feeding cost is still so much or even increased, but it is not cost-effective to grow slowly (meat).
There is a reason that can't be said easily, that is, chairman Dayang is big-minded, powerful, more difficult to control, easy to push people, easy to escape, and so on. Just kill and sell as soon as possible. Young people know that eating long meat is also stupid and miserable.
A small number of rams and some ewes can live a long life, but there is also a question of whether it is economical: once the reproductive ability is poor to a certain extent, or the ewes have no plan (the more sheep are not the better), they no longer have reserved value.
In this case, it is meaningless to say that the life span of captive sheep can reach 15 years-that is an example.
Such local rules also apply to other meat-eating livestock: pigs and chickens, whose "commercial life" is mostly less than six months, which is not as good as sheep. Pigs in rural areas will stay longer, but they will kill some during the New Year, and few will live for two years. Laying hens can live to be over 1 year, provided that they can lay more eggs.
In fact, a chicken can live for 6 or 7 years without being killed or raised, and the long time can reach 10 year. But most chickens are not that expensive.
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The situation of cattle and horses is slightly different, because they have both meat value and service value. In terms of meat value, most beef cattle and horses live longer than mutton sheep-because they grow up for a long time, but not much longer than mutton sheep.
The average life span of horses is 30-35 years old, and the longest is over 60 years old. The service age is 3 ~ 15 years old, and some can reach 20 years old. It can be seen that the horse is old, not very fierce, but eats a lot, so the possibility of being killed by the owner in advance to eat meat is greatly increased.
There are many modern motor vehicles. Earlier, horses were used more fully: generally, better horses rode first, pulled carts to do farm work when they couldn't ride, and killed meat when they couldn't ride, without much hesitation.
In fact, according to some data, most horses don't live two-thirds of their natural life. In this way, it goes without saying that the life span of captive horses can reach 35 or 60 years old, which is boring.
The same soil rules apply to cattle. Once the working efficiency of cattle is obviously reduced, it is difficult to guarantee its life-whether to kill or not to sell, but also to consider comprehensively-considering the market price of beef cowhide, feeding cost, cattle renewal cost and so on.
What about the treatment of dogs? Ha ha.
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For those wild animals, it is really difficult to guarantee their longevity in the natural environment, because there are many diseases, fights and accidents, and food is not necessarily sufficient. Some weak animals are also in danger of being hunted-there is the possibility of "premature death". But what about imprisonment?
First of all, food and cages are not free. Let's exchange freedom. Losing freedom, natural resources and activity space is a kind of destruction for animals.
Animals in captivity can't eat well. As can be seen from the captivity, liger ate the cheap chicken skeleton that was eliminated-how much nutrition can he have? And you may not be full yet. This is still the treatment of first-class animals. Herbivores eat a lot of dry straw which is easy to store and cheap. It is not easy to get fresh grass.
Captive animals often live in small and crowded places, receive a large number of tourists and face health and disease problems.
In addition, animal breeders will certainly try their best to make money from animals, such as training them to play tricks. It will inevitably lead to some problems such as violent treatment and uncertain living conditions, which will definitely have an impact on life expectancy.
The zoo has certain medical conditions, but it is limited. After all, there are so many kinds of animals that it is difficult to be kind to them. There is also a question of cost: how much is it worth to see sick animals? For example, a wild goat in captivity is only worth one or two thousand yuan. Can you expect the animal trainer to spend tens of thousands of dollars to treat it?
For example, the transition of animals from nature to artificial environment is only the transition from one cage to another. Once wild animals are kept in captivity, their nature is no different from that of dogs, pigs and sheep-the difference is nothing more than the number: there are few wild animals, so they are more valuable, and only a little attention is paid to them.
These are land animals. For aquatic animals, especially marine animals, being caged is a greater disaster for them. Not much to say, please check the information yourself.
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In a word, no matter what kind of animal it is, compared with the normal natural environment, captivity is indeed a catastrophe.
It is said that if they are not locked up, they will die. This is true in some cases, but it is still a cruel and irresponsible statement. Yes, the natural environment on which animals live has almost been destroyed by human beings. But going into a cage is nothing more than living for a while, living like a dog.
In fact, according to fatalism, early death and early birth are not necessarily a bad thing. Maybe I can be a normal person in my next life, maybe. ...
At least, there is hope to become a protected animal.
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The prodigal backpacker says hello.