Dairy Sheep Symposium - the Department of Animal Sciences ...

opposite trend with lambs of 1/2 or greater Lacaune breeding weighing an average of 3.16 lb.
more at 150 days of age than lambs of 1/2 or greater East Friesian breeding. This indicates that
Lacaune lambs have greater postweaning average daily gains than East Friesian lambs.
Table 1. Bodyweights (lb.) of F1 lambs produced from East Friesian or Lacaune
sires and non-dairy dams
150-day weight
Birth weight 60-day weight (males only)
Breed group N Mean ± SE N Mean ± SE N Mean ± SE
1/2 EF 136 9.2±.14 a
1/2 LA 125 8.6±.14 b
123 51.2± 1.01 52 123.8± 2.99 d
116 50.6± 1.04 48 131.5± 3.15 c
a,b Means within a column with no superscripts in common are significantly different ( P < .05).
c,d Means within a column with no superscripts in common are significantly different ( P < .10).
Table 2. Bodyweights (lb.) of lambs produced from 1/2 East Friesian or 1/2
Lacaune dams and sired by East Friesian or Lacaune rams
150-day weight
Birth weight 30-day weight (males only)
Breed group N Mean ± SE N Mean ± SE N Mean ± SE
3/4 EF 65 11.0±.22 a
1/2 EF1/4 LA 62 11.2±.23 a
1/2 LA 1/4 EF 60 9.6±.24 c
3/4 LA 90 10.2±.19 b
60 32.3±.71 a,b
58 33.2±.73 a
53 30.9±.76 b
80 30.8±.61 b
14 120.0±5.28 a,b
16 126.9±5.08 a,b
17 132.1±4.55 a
22 116.6±3.98 b
a,b,c Means within a column with no superscripts in common are significantly different ( P < .05).
Table 3. Bodyweights (lb.) of lambs born in 2001 from 1/2dairy
and 3/4-dairy ewe lambs and sired by East Friesian or
Lacaune rams
Birth weight 30-day weight
Breed group N Mean ± SE N Mean ± SE
3/4 EF 27 11.2±.30 a,b
1/2 EF 1/4 LA 24 11.7±.30 a
1/2 LA 1/4 EF 32 9.2±.27 d
3/4 LA 30 10.2±.27 c
7/8 EF 19 10.2±.35 c
5/8 EF 1/4 LA 12 11.6±.43 a,b
1/2 LA 3/8 EF 22 10.2±.32 c
3/4 LA 1/8 EF 12 10.1±.43 c
7/8 LA 11 10.6±.44 b,c
26 32.1±1.10 a,b
23 35.0±1.13 a
27 31.0±1.08 b,c
25 32.2±1.08 a,b
19 29.6±1.29 b,c
12 32.6±1.58 a,b
22 31.0±1.18 b,c
10 28.1±1.72 c
11 31.4±1.63 a,b,c
a,b,c Means within a column with no superscripts in common are
significantly different (P < .05).