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Estimation of genetic and phenotypic parameters in a closed ...

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Table 2. Summary <strong>of</strong> herltabllity<br />

estlmates <strong>of</strong> carcass measurements <strong>and</strong> age to rnarket weight traits<br />

Tralts<br />

h2<br />

Mechod <strong>of</strong> estimatlon<br />

No. <strong>of</strong> observatlons<br />

Refe¡ence<br />

Carcass length 0.52<br />

0.78r{.10<br />

0.87<br />

0 .50+0 . 16<br />

0.464n.04<br />

0.64<br />

Pooled from paternal, maternalhalf-slb<br />

<strong>and</strong> fu11-slb correlaLLon<br />

Paternal half-slb correlatlon<br />

il il tr il<br />

ttililtt<br />

tr tr It tt<br />

Pooled fr<strong>of</strong>l paternal- half-sib<br />

correlatlon <strong>and</strong> parent-<strong>of</strong>fspr<strong>in</strong>g regressfon<br />

53r<br />

1,936<br />

2,296<br />

7,275<br />

44,969<br />

2,031<br />

Enfleld <strong>and</strong> llhatley (1.961)<br />

Smlth et a1. (1962)<br />

SmlLh <strong>and</strong> Ross (1965)<br />

Roy et al. (1968)<br />

Flock (1970)<br />

Fahmy <strong>and</strong> Bernard (f970)<br />

Backfat thlckness<br />

. Mean<br />

Shoulder<br />

Mid-back<br />

Loln<br />

Mean<br />

Shoulder<br />

Rtb<br />

L<strong>of</strong>n<br />

Mean<br />

Mean<br />

Mean<br />

0.63<br />

0,62r{.10<br />

o . 73-rc.10<br />

0.71+0.10<br />

0.74<br />

0.26r{.11<br />

0.43+O.13<br />

0.zsfl.L2<br />

0.35r{.12<br />

0.69-rc.17<br />

0.s3<br />

Pooled from paternal, maternal halfslb<br />

<strong>and</strong> fu11-s1b correlatlon<br />

Paternal half-slb correlatlon<br />

tr[[<br />

llItil<br />

ll il tt<br />

il[il<br />

lrltil<br />

ll il il<br />

llrfil<br />

531<br />

7,936<br />

2,296<br />

1 ,191<br />

585<br />

650<br />

Enf íel.d <strong>and</strong> h¡hatley (1961.)<br />

Smlrh et al. (1962)<br />

Smlth <strong>and</strong> Ross (1965)<br />

Roy et al. (1968)<br />

Jensen et al. (1967)<br />

Arganosa et al. (1969)<br />

. . Contlnuetl

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