question archive The following variances were calculated for two traits in a herd of hogs
The following variances were calculated for two traits in a herd of hogs
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The following variances were calculated for two traits in a herd of hogs.
| Trait | VP | VG | VA |
| Back fat | 28.9 | 13.7 | 7.98 |
| Body length | 49.1 | 27.2 | 12.4 |
Part A
Calculate broad-sense (H2 ) heritability for back fat in this herd.
Enter your answer to three decimal places (example: 0.123).
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Part B
Calculate broad-sense (H2 ) heritability for body length in this herd.
Enter your answer to three decimal places (example: 0.123).
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Part C
Calculate narrow-sense (h2 ) heritability for back fat in this herd.
Enter your answer to three decimal places (example: 0.123).
Part D
Calculate narrow-sense (h2 ) heritability for body length in this herd.
Enter your answer to three decimal places (example: 0.123).
Part E
Which of the two traits will respond best to selection by a breeder?
| back fat | |
| body length |
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In general, heritability is broadly classified into two types namely: broad sense heritability and narrow sense heritability
Broad sense heritability is calculated by using following formulae:
Narrow sense heridity is calculated by using following formulae:
Back fat is used for the best selection because it contain high narrow sense heritability and low broad sense heritability. More over, narrow sense heritability have good breeding value.
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