In:
Archives Animal Breeding, Copernicus GmbH, Vol. 65, No. 4 ( 2022-11-17), p. 417-426
Abstract:
Abstract. In order to promote the rapid development of the meat sheep
industry, a three-way crossbred combination experiment was carried
out with Australian White, Dorper, and Charollais sheep as terminal male
parents and the elite F1 hybrids of Australian White × Small-tailed Han (Han), Dorper × Han, and Charollais × Han
as female parents, which was based on the screening of a two-way crossbred
combination in meat sheep. The growth performance of six groups of three-way
crossbred combinations and Han lambs was measured and analyzed, and the
effect of a polymorphism in the CLPG gene on the growth performance of three-way
crossbred lambs was also studied. The results showed that under
the same rearing conditions, weight at 3 and 6 months of age and average daily
gain from birth to 3 months and from 3 to 6 months of age were all the
largest for Australian × (Charollais × Han) crossbred
lambs. They were significantly or extremely significant different from the
other three-way crossbred combinations and Han lambs (P〈0.05, P〈0.01). The body height, body length, chest girth, and cannon bone
circumference at 3 months of age and body length, chest girth, and cannon
bone circumference at 6 months of age were also the largest for Australian × (Charollais × Han) crossbred lambs. Among them, body
length, chest girth, and cannon bone circumference at 3 months of age were
significantly different from the other three-way crossbred combinations and
Han lambs (P〈0.05), and body length, chest girth, and cannon bone
circumference at 6 months of age were significantly or extremely significant
different from the other three-way crossbred combinations and Han lambs (P〈0.05, P〈0.01). The potential genetic effects of the CLPG gene on the growth
performance indicators of three-way crossbred lambs showed that a mutation
site (g.232C 〉 T) of this gene had two genotypes: CC and CT. Among them,
the data of body weights and body sizes from CT genotype individuals at birth,
3 months old, and 6 months old were significantly higher than those of CC
genotype individuals, and some indicators showed significant or extremely
significant differences (P〈0.05, P〈0.01), suggesting that
higher growth performance was observed in individuals with T alleles. To sum up, the crossbred combination of Australian × (Charollais × Han) could be suggested as the optimal choice. The T
allele of the CLPG gene showed potential advantages in the performance of meat
production in meat sheep. Based on the current results, we recommend that
the offspring of Australian × (Charollais × Han) with the
T allele should be preferentially utilized for meat sheep production.
Type of Medium:
Online Resource
ISSN:
2363-9822
DOI:
10.5194/aab-65-417-2022
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2022
detail.hit.zdb_id:
2235451-7
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