Agriculture Reference
In-Depth Information
Table 4.9
Means for body weight at birth (kg) and at various ages, age at fi rst kidding, kidding
interval, service period, litter size, live weight at slaughter, hot carcass weight and dressing
percentage for goat breeds and their crosses
1
.
Breed
Body weight at
Sire
Dam
Birth
3 mo
6 mo
9 mo
12 mo
Beetal
Beetal
2.9 (0)
7.7 (0)
12.2 (0)
21.8 (0)
Alpine
Beetal
3.2 (10)
10.3 (34)
13.8 (13)
40.1 (84)
Saanen
Beetal
3.4 (17)
10.4 (35)
14.3 (17)
26.9 (23)
Malabari
Malabari
1.7 (0)
5.7 (0)
9.3 (0)
11.1 (0)
15.2 (0)
Alpine
Malabari
1.9 (12)
6.3 (11)
8.9 ( − 4)
12.2 (10)
17.6 (16)
Saanen
Malabari
2.3 (35)
6.1 (7)
10.2 (10)
13.3 (20)
17.8 (17)
Saanen
Saanen × Malabari
2.7 (17)
5.9 ( − 3)
9.7 ( − 5 )
Sangamaneri
Sangamaneri
1.9 (0)
7.3 (0)
10.6 (0)
13.5 (0)
17.3 (0)
Angora
Sangamaneri
2.1 (11)
7.3 (0)
10.6 (0)
13.0 ( − 4)
16.0 ( − 8)
Angora
Angora × Sangamaneri
2.2 (5)
8.2 (12)
11.2 (6)
13.4 (4)
15.4 ( − 11)
Breed
Litter size (%)
Age at fi rst
kidding (day)
Kidding
interval (day)
Service
period (day)
Sire
Dam
Single
Twin
Triplet
Beetal
Beetal
534 (0)
313 (0)
173 (0)
41
51
9
Alpine
Beetal
495 (
−
7)
323 (3)
201 (16)
59
36
5
Saanen
Beetal
546 (2)
300 (
−
4)
67
29
5
Malabari
Malabari
700 (0)
295 (0)
141 (0)
55
41
4
Alpine
Malabari
685 (
−
2)
329 (
−
12)
184 (31)
65
35
Saanen
Malabari
585 (
−
16)
407 (38)
260 (84)
31
63
6
Breed
Age at slaughter
(mo)
Live weight at
slaughter (kg)
Hot carcass
weight (kg)
Dressing
percentage
Sire
Dam
Beetal
Beetal
9
15.2 (0)
7.7 (0)
50 (0)
Alpine
Beetal
9
18.3 (20)
9.5 (23)
52 (4)
Saanen
Beetal
9
18.8 (24)
9.4 (22)
50 (0)
Alpine
Beetal
5
14.1 ( − 7)
5.3 ( − 31)
38 ( − 24)
Sangamaneri
Sangamaneri
9
11.5 (0)
5.1 (0)
44 (0)
Angora
Sangamaneri
9
12.9 (12)
4.4 ( − 14)
38 ( − 14)
Sources: Acharya et al., 1982 ; Acharya, 1988 ; Shrestha and Fahmy, 2007 .
1
Percent deviation from dam breed in parenthesis.
were superior to the purebreds in body weight of kids from
birth to 12 months of age; reproductive performance of
does manifested in age at fi rst kidding, kidding interval,
service period, and proportion of single, twin, and triplet;
and hot carcass weight and dressing percentage of kids
(Table 4.9 ).
The infl uence of heterosis on performance may vary
according to the breeds involved in crossing together with
the environment where the offspring is raised. The mating
of bucks of the Beetal breed with does of the Sirohi breed
and Beetal × Sirohi cross failed to demonstrate heterosis
(Table 4.10) in the single- and backcross combinations
compared to contemporary purebreds derived from their
female parental breed for the body weights of kids from
birth to 12 months of age, kid mortality, feed effi ciency
and dressing percentage (Taneja, 1982). Lack of heterosis
