Izvorni znanstveni članak
Effect of Crossbreeding Indigenous Sheep with Awassi and Corriedale Sires on Reproductive Performance under Smallholder Production System in Ethiopia
Tesfaye Getachew
; University of Natural Resources and Life Sciences Vienna, Department of Sustainable Agricultural Systems, Division of Livestock Sciences, Gregor Mendel Str. 33, A-1180 Vienna, Austria; Debre Berhan Agricultural Research Center, Debre Berhan, Ethiopia
Solomon Gizaw
; Debre Berhan Agricultural Research Center, Debre Berhan, Ethiopia
Sisay Lemma
; Debre Berhan Agricultural Research Center, Debre Berhan, Ethiopia
Maria Wurzinger
; University of Natural Resources and Life Sciences Vienna, Department of Sustainable Agricultural Systems, Division of Livestock Sciences, Gregor Mendel Str. 33, A-1180 Vienna, Austria
Solomon Abegaz
; Debre Berhan Agricultural Research Center, Debre Berhan, Ethiopia; Gondar Agricultural Research Center, Gondar, Ethiopia
Johann Sölkner
; University of Natural Resources and Life Sciences Vienna, Department of Sustainable Agricultural Systems, Division of Livestock Sciences, Gregor Mendel Str. 33, A-1180 Vienna, Austria
Sažetak
The objective of this study was to evaluate the effect of crossbreeding on reproductive performance. A village based sheep crossbreeding project has been implemented since 1998 in three villages in the South Wollo, Menz and Chacha districts in Ethiopia. Crossbred rams (3/4 Awassi x 1/4 Local) were supplied to a group of farmers aiming to upgrading the indigenous genotype through backcrossing. The combined levels of location and genotype, year, season and parity had significant effects on the reproductive performance of ewes. Generally, local genotypes showed better (p<0.05) reproductive performance except for number of lambs weaned per ewe per year. The interaction of genotype and location was significant for age at first lambing and lambing interval. In Wollo, Corriedale x local crossbred ewes had similar reproductive performance to that of the local breed. The variation in reproductive performance among locations indicated the importance of delineating crossbreeding areas depending on environmental situation and farmers’ capacity.
Ključne riječi
Awassi; Corriedale; sheep; crossbreeding; reproductive performance; smallholder
Hrčak ID:
106902
URI
Datum izdavanja:
4.9.2013.
Posjeta: 1.851 *