Effects of Production System on Reproduction Efficiency in Dairy Sheep

Maria Sauer

Abstract


Aim of the current research was to evaluate the effects of the rearing system, organic versus conventional, on the reproduction efficiency when rearing Turcana sheep under extensive low-input conditions. The study flocks consisted out of 120 adult multiparous ewes, managed under conventional and organic production systems, with ewes being reared for dairy production under highland areas. Conception rates were on average of 96.6±0.84% and 97.5±0.66% in organic and conventional system, respectively (p>0.05), while the prolificacy was of 124.6±1.47% for the organically reared ewes, and of 118.3±1.23% for those reared under conventional system (p≤0.05). Milking ability of dam- ewes from lambing till 28 days, was of 4.86±1.44 kg on the organic flock and of 4.45±2.10 kg for the conventional animals (p>0.05). Survival rates of the lambs from birth till the age of weaning (70±10 days of age) were of 94.3±1.68 % and 95.7±0.33 % for the organic produced lambs and the conventional born ones, respectively (p≤0.05). Current results outline that the production system when dairy sheep are concerned, has an effect on the reproduction efficiency and on the overall farm returns, give that lamb production represents an important source of income in commercial farms.

Keywords


organic systems; production efficiency; reproduction output; 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
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

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