Effects of Using Dorper, Hampshire Down, Bluefaced Leicester and German Blackheaded Rams as Terminal Sires in Extensive Low-Input Production Systems

Dinu Gavojdian

Abstract


The current study was conducted to evaluate Dorper, Hampshire Down, Bluefaced Leicester and German Blackheaded breeds as terminal sires in an extensive low-input production system under European temperate conditions, when crossed with native Turcana breed as a maternal genotype. The project breeding herd consisted of 300 multiparous purebred Turcana ewes, managed under extensive low-input production system. Six breeding herds were set-up, with randomly selected ewes (50/group) being exposed to Dorper, Hampshire Down, Bluefaced Leicester, German Blackheaded and Turcana (control group) rams. Lambs birth weight was influenced (p≤0.01) for the F1 Hampshire Down x Turcana and F1 German Blackheaded x Turcana crossbreds, compared to their counterparts. Lamb survival from birth to weaning was the lowest (88.4±3.30%) for the Dorper sired lambs, and the highest (94.0±1.84%) in the Bluefaced Leicester sired lambs (p≤0.01). Hampshire Down and German Blackheaded sired lambs had similar survival rates as the purebreds Turcana lambs (p>0.05). Body weight of lambs at the age of 8 months was significantly higher (p≤0.001) in Dorper (41.3±0.51), Bluefaced Leicester (41.2±0.34) and German Blackheaded (42.4±0.58) sired genotypes, while the Hampshire Down half-breeds (39.3±0.65) had intermediate body weights (p≤0.01) compared to the controls (34.6±0.49) and the better performing genotypes.

Keywords


Bluefaced Leicester; Dorper; Hampshire Down; German Blackheaded; sheep; Turcana

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
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