Sheep - AgRIS

Table 6.3 Averages for different traits in Malpura and its crosses with Rambouillet
Breed First six Second six Average Average Average Body
crosses monthly monthly stable fibre medullation weight
greasy greasy length diameter (%) weight at
fleece weight fleece weight (cm) (micron)
(kg) (kg)
Malpura 0.42±0.01 0.532±0.02 5.76±0.10 39.32±0.63 82.41±0.04 23.90±0.06
(21,34.10) (97,36.10) (145,22.10) (145,19.15) (145,13.75) (62,11.05)
R x M(F 1 ) 1264±0.056 1.215±0.047 5.97±0.12 27.17±0.61 41.80±0.06 27.62±0.81
(70,36.68) (65,31.34) (119,23.34) (117,24.35) (117,30.22) (53,21.18)
R x M(F 2 ) 0.838±0.042 1.139±0.088 5.06±0.13 23.89±0.73 33.80±0.09 28.16±0.99
(82,45.45) (31,42.25) (87,24.33) (87,28.52) (86,44.17) (50,24.66)
R x M(5/8) 0.866±0.051 1.166±0.093 4.51±0.17 20.72±0.86 17.70±0.17 28.13±0.89
(59,49.84) (23,37.22) (52,26.61) (52,26.61) (49,66.76) (50,19.69)
R x M(3/4) 1.053±0.054 1.053±0.012 4.37±0.19 19.19±0.79 13.92±0.13 25.18±1.07
(45,40.45) (19,41.26) (58,42.63) (58,42.63) (58,31.05) (32,23.69)
Within parentheses are number of observations and percentage coefficient of variation.
Table 6.4 Superiority of F 1 and F 2 over native in terms of percent deviations of their least
square means
Traits R x M(F 1 ) R x M(F 2 )
First six monthly greasy 71.78 18.03
fleece weight (kg)
Second six monthly greasy 100.97 119.77
fleece weight (kg)
Staple length (kg) 8.76 -5.78
Fibre diameter (/µ) -38.48 -42.62
Fibre diameter (/µ) -53.63 -58.61
Yearling body weight (kg) 7.79 3.94
R x M = Rambouillet x Malpura
Table 6.5 Per cent survivability of Malpura (M) and its crosses with Rambouillet (R)
Breed/ Pre-weanmg Post weauing Total
Breed crosses (0-3 months) (3-12 months) (0-1 year)
Malpura 82.12 (63) 62.18 (238) 42.16 (351)
R x M(F 1 ) 94.78 (134) 95.24 (84) 87.91 (91)
R x M(F 2 ) 96.15 (104) 78.46 (65) 73.91 (69)
R x M(5/8) 86.36 (88) 83.93 (56) 69.11 (58)
R x M (3/4) 89.73 (-) 89.74 (39) 74.46 (47)
Figures within parentheses are the number of observations.
Table 6.6 Heritability estimates and genetic correlations for important body weights and wool
traits
6 months yearling fleeee Fibre Staple Medullation
weight weight weight diameter length per cent
6 months weight E 0.47±0.072 0.897±0.020 High - - -
R
Yearlirigweight E 0.87±0.80 0.45±0.026 098±0.009 - - -
R 0.07±-0.90
Fleeceweight E 0.21±0.055 0.51±0.19 10.87±0.084 0.08
R 0.07±-0.60 -0.38±0.67 -0.48±-0.91
Fibre diarneter E 0.453 0.37±0.359 -0.68±0.07
389
0.03-0.47
StapleLength E 0.404±0.05 0.08
R 0.01±0.86
Medullation E 0 661
percent R 0±0.80
E, Estimate; R, Range
Figures on the diagonal are the heritabilites and off-diagonal genetic correlations.