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Line breeding is breeding a parent to it's own child, thus line. Sometimes you get something great, more than not you get genetic tendencies generation later or even in that first generation. I breed coveted DDR shepgerds and no matter how much I like the match, I will not line breed becaue I do not know what might take place in their stock in any generation to come. I think of the heartbreak of the family that would suffer as greatly as their dog but it is a choice that a few people have I believe succes with. Blessings
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∙ 15y ago
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What is an example of linebreeding?
1/2 brother to 1/2 sister (or opposite), father/mother to grandchild (or opposite)
What has the author J H Lents written?
J. H. Lents has written: 'The basis of linebreeding' -- subject(s): Breeding, Hereford cattle, Pedigrees
Can you breed a bull to his grandmother cow?
Yes as long as the grandmother cow still has breeding capabilities and as long as she is still alive. But it is not recommended in herds where linebreeding is not going to bode well for the producer. Linebreeding should only be done in PUREBRED herds, not just loosely in any herd at any time, as in most cases you will end up with calves that have genetic abnormalities, unthriftiness, or can even be stunted at birth. Linebreeding and Inbreeding is only for those herds who need to be genetically cleansed, to be pure, and to find and cull those cows and bulls that may have some form of genetic abnormality that will surface under the closed-herd breeding conditions.
Is it possible to breed a bull to his mother and his offspring?
Yes, but this, which is called Inbreeding, often causes far more problems with genetic defects and disorders, especially when animals are not tested for genetic defects, or have unknown genetic background (or are considered inferior in comparison to other superior animals). Inbreeding and Linebreeding should only be done if you know what genetics your herd has, if you have a LOT of experience with breeding cattle, and if you wish to purify a certain progeny line. Ninety-percent of the time it is highly unrecommended that most breeders, especially those that have to ask about it and are still novices to breeding cattle, to use inbreeding or linebreeding in their herds.
Is a calf of a cow a contingent asset?
Yes. No matter if that cow (and the sire) is a purebred or not, it is hard to predict the future economic benefit of that calf, unless we really and truly know the exact breeding, health and genetic of the dam and sire that will produce the expected calf, which is almost impossible, even in a purebred operation where linebreeding and inbreeding is being practiced to purify a breed strain.
Is it OK to mate a heifer with her father or other closely related bull?
No, not if you know the breeding history of her lineage and her parent's lineage and so on and so forth. Linebreeding can only be done in those herds that are purebred and that you know the pedigree history of, otherwise you will get calves that are either smaller and unthrifty, or get calves that have genetic abnormalities that could be fatal. Otherwise, if she is one animal that you have no idea what kind of background she has or what breed[s] she is, you better get her bred to an unrelated bull.
What are the main types of discus fish?
Discus (Symphysodon sp.) used to be classified into several species prior to the discovery of DNA. Now it has been established that there are actually two species. One is S.discus and the other is S.aequifasciata. The latter species has been sub-divided into three subspecies S.a.axelrodi (brown discus) the S.a.haraldi (Blue discus) and last but not least the S.a.aequifasciata (green discus). It is by inbreeding, linebreeding and selective crossbreeding of the last three subspecies that all the fancy varieties of discus have been developed.
How would the efficiency of cattle production be affected if producers could only use breeds from one country?
Production would be very biased and inefficient. There would be higher risk if inbreeding and linebreeding if millions of animals of one breed were used. Inbreeding and linbreeding may be the only option to increase the population of that one breed within that particular country. With increased inbreeding, more offspring with genetic mutations, fatal or otherwise, would arise. Smaller calves result with each consecutive breeding of relatives, which is highly inefficient for the cattle industry.
My 6 day old bull calf is undershot why does this happen and what causes it?
Undershot jaws in animals (according to the Merck Veterinary Manual, this is when the lower jaw or mandible is too long and juts out in front of the maxilla or upper jaw) is hereditary, and is caused by a recessive gene that only pops up when two parents that are heterozygous for undershot jaws mate. This can be a result of inbreeding or linebreeding, or just pure coincidence between two unrelated parents. In young animals, especially in your 6-day-old bull calf, this will often correct itself over time.
Why is inbreeding rarely a problem among animals in the wild?
Inbreeding is the breeding of close relatives--say, brother-sister, father-daughter, mother-son, etc. Linebreeding is the breeding of more distant relatives. In some cases, used sparingly, it is used by breeders to cement traits in their lines--both parents will have very similar genetics, and thus very consistent type in the offspring is likely. It carries high risks, however, for the same reason--not only are you increasingly the likelihood of desirable recessives appearing in the offspring, but also of undesirable or even dangerous traits appearing. Used by breeders who understand the risks, it -can- be used responsibly to improve a gene pool. Generally, however, it is discouraged among animal breeders and linebreeding can be used to cement traits in a somewhat safer manner. Many species, if provided unrelated options for mates, will not mate as willingly with close relatives in natural situations--in the absence of other mates, however, most will mate with relatives which can lead to severe problems in species with very low populations (whether endangered species or species in a small area with no opportunity to mate with outside population, as with the wolves of Isle Royale).
Is it better to breed a puppy with its father?
Inbreeding is the breeding of close relatives not separated by more than one generation, such as brother to sister, father to daughter. This method is used to concentrate good qualities in the line but may also concentrate bad qualities. Only the most experienced breeders should be willing to attempt this method and be willing to make possible hard decisions with respect to the resulting puppies. Continual inbreeding should not be done. Linebreeding is a method that breeders will use to improve upon and try to eliminate structural and health problems from their dogs. It is the breeding together of dogs that have a well bred superior common ancestor who has attributes that the breeder is attempting to reproduce and improve upon in their own dogs. Things such as health, longevity of life, structure, movement and temperament of a dog that one is planning to linebreed on must be taken into account. Linebreeding is an attempt to concentrate the genetic contribution of an outstanding ancestor in the resulting offspring. If the dogs aren't stellar examples of their breed, you will be breeding inferior puppies that may have major health concerns. Long story short, you need to have both dogs you're considering breeding examined by your vet to rule out any health problems that could occur by breeding closely related dogs. Having a DNA test run (a simple blood test) is the best way of finding out what genetic diseases are being carried by the dogs, to ensure healthy puppies. Only after both dogs are cleared of genetic diseases, should they be bred.
What are the effects of inbreeding in cattle?
If it is not monitored and you do not know the genetic or breed history of certain animals, you can run into major problems such as higher death rate in calves due to a genetic mutation that causes the calves to die upon being born, reduction in growth rates and productivity, high incidence of mutations that could compromise an animal's productivity, the list goes on. Anybody that doesn't know the genetic history of their cattle should NOT be using inbreeding or linebreeding. However, inbreeding is useful when developing a breed, especially when trying to find and cull out animals that have certain genetic disorders. It's a way of "cleansing" a breed so that it can prove itself is a high-quality, healthy and thrifty breed for other producers.
