It's called body condition score. It is typically a numerical rating system from 1 to 9 (American) or 1 to 5 (British/Canadian/American dairy), with 1 being the most emaciated, 9 (or 5) as very fat.
For breeding animals, the target should be around 4 to 6 on a scale of 1 to 9 (or 3 on a scale of 1 to 5) as being the most ideal condition for cows and bulls for breeding and calving. This is because this is optimum for best fertility and calving ability. Any animal that is too fat or too thin has problems with poor fertility, as well as birthing.
Heifers and young bulls that are too fat have fertility problems because the excess fat impacts the further maturity of reproductive organs; fat cows can develop cystic ovaries which also impact fertility, and disrupts normal hormonal cycles (estrous). Heifers that are too fat also will have problems with milking ability because of the higher amount of fat globules in the udder versus mammary glands. Fat around the testicles in the bull will negatively impact fertility. Also, too much fat around the birth canal can make calving difficult, particularly for first-time heifers.
Very thin cows also have fertility problems because more energy from the food the eat is being put into just the bodily maintenance requirements to keep the cow alive. A cow's bodily priorities is the body first, and once the maintenance requirements are satisfied, reproductive capacity comes second. If the maintenance requirements are not met, fertility is compromised. Thin cows tire out more readily when calving because of lack of muscle tone and stored energy to give the effort to push out a calf.
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Well, that's not so much a difficult question. All sea animals depend on water for breeding such as: Whales, sharks, angel fish, dolphins, crabs, lobsters, etc. Some animals such as turtles or frogs or some other amphibians do depend on water for breeding their animals.
It means breeding. Helps to increase the population of animals.
Animals can learn, they have a degree of intelligence, they have sentiments but they don't have (unfortunately) a culture.
Selective breeding is done in cattle because cattlemen and breeders with their cattle herds and/or breeds they care for and manage are always improving the genetics and productivity of their animals. Every breed has its faults, so cattlemen and farmers are always selecting animals to improve the cowherd and culling out those that are not improving the herd.
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breeding is when to animals mate and reproduce more of that species of animals
BMR is the amount of energy your body burns at rest. Body fatness is calculated from your body fatness.
No. Animals will continue to breed as long as there is other animals of their species to breed to. However, no animal can ever be "over-bred."
Fatness occurs when you ingest more calories than you are burning.
Physical Fatness was created on 1997-11-25.
marine animals and birds
Animals in the wild breeding, such as squirrels, rabbits, deer, elephants, etc., are not selective breeding (artificial selection).
Animals, and crops.
yes she is the fatest fatness teacher around
Cross breeding is simply taking two breeds of animals and mating them together (Such as a Charolais crossed with a Hereford). Where selective breeding is selecting the what two animals you want bred together to produce a better animal.
By breeding.