Tandem Method Of Selection In Animal Breeding

Tandem method definition is a method of improving livestock by breeding animals selected for excellence in one quality as milk production and neglecting other qualities until that chosen is considered adequately fixed in the strain when another quality may be selected and bred into the strain. In the method of tandem selection differences in the a values would lead to the most important traits being selected for perhaps three or four generations while the less important ones would be the object of selection for only one or two generations in each cycle of improve ment. Selection of males is less intense in this as a bull can be used for mating only 2 3 times i e.

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The efficiency of this method is dependent on the genetic relationships among the traits.

Tandem method of selection in animal breeding. Boer goats bucks mature to 300lbs. If a performance record of individual is available the addition of pedigree information usually adds little to accuracy of estimates of breeding value of individual. For instance one could select for both increased milk yield and increased milk fat content in cows via tandem selection by first selecting those with the best of one trait say those that produce highest milk yield. Pedigree selection is very useful when the traits selected are highly heritable.

The three well known methods are designated as the tandem method the method. In natural mating a breeding male is actually used for mating with the females. The two method of mating livestock breeding is natural and artificial. Selection indexes are utilised by livestock breeders of many species around the world and aid in the selection of animals for use within a breeding program where there are several traits of economic or functional importance.

When breeding is between animals of the same breed for 4 6 genera tions it is called inbreeding. Of selecting animals for breeding but the most efficient method is that which usually results in maximum genetic improvement per unit of time. The other method is artificial insemination. Methods of selection for multiple traits tandem selection focuses on multiple traits yet one at a time.

Inbreeding and out breeding based mainly on breeding work with cattle. Methods of animal breeding. Selection on the basis of performance of the ancestors is called as pedigree selection. Two methods of animals breeding are.

Females in a week. Selecting animals with selection indexes. Inbreeding may be explained by taking an example of cows and bulls. Tandem selection is a method of artificial selection in which useful traits are selected for sequentially.

Methods of mating livestock. Tandem method breeder selects and improves only one trait at a time until it reaches an acceptable level and then he shift to another and so on for a third. In 1942 hazel lush suggested three methods of selection for net merit. After the performance of one is achieved then move to the next trait independent culling set minimum standards for more than one trait at a time for the indiv.