Ai has been commercially available for 60 yr.
Cattle gutter used for mating.
Unwanted pregnancies can be safely and efficiently terminated from one week after mating until about 4 1 2 months of gestation.
Mature cattle having more than 3 years of age should be used for breeding.
Because breeding beef cattle is all about getting cows bred for producing calves to sale either for replacements or beef.
In the first mating the f 1 progeny will get 50 per cent of genes from the purebred sire.
In this type of livestock system sires of a pure breed are successively used to mate nondescript females and their progeny generation after generation.
Straightline breeding opera tions utilize only one breed.
The induced abortion is uncomplicated the fetus and placenta are usually expelled about 4 or 5 days after the injection and the reproductive tract returns.
The ani mals are called purebreds.
It is widely used in dairy cattle but is used much less in beef cattle because of handling and labor costs.
And cloning when it involves large scale embryo transfer fits the same pattern.
A tra ditional straightline breeding pro gram is called purebreeding.
Mating systems have to do with finding the right genetics but this must be done in the context of the environment into which the cattle are going to be placed.
Pregnancies from mis mating and abortion in feedlot heifers.
There are two methods of cattle breeding.
If it is a female on sexual maturity it will be mated to another purebred sire of the same breed.
A 1 in the case of cattle horses or other livestock acquired by the taxpayer after december 31 1969 section 1231 applies to the sale exchange or involuntary conversion of such cattle horses or other livestock regardless of age held by the taxpayer for draft breeding dairy or sporting purposes and held by him.
Ai offers a selection of bulls with known genetic potential such as measured by estimated breeding values ebvs for traits such as ease of calving or growth rates.
And you don t have to think much about many things such as genetic improvement increasing milk production etc.
The same is true of embryo transfer only the effect is multiplied.
For most commercial operations the inconvenience of concentrating cattle heat detecting and breeding artificially outweigh at least in the minds of commercial producers the advantages of ai.
Breeding beef cattle is relatively easy as compared to breeding dairy cattle.
Some common methods of breeding of cattle buffaloes sheep goats pigs horses donkeys mules camels etc.
Natural breeding and artificial insemination.
I for 24 months or more from the date of acquisition in the case.
