Technical efficiency of meat sheep production systems in 1 Spain 2 3 J.P. Pérez, J.M. Gil , I. Sierra 4 5 a Dpto. Producción Animal y Ciencia de los Alimentos. Facultad de Veterinaria. Universidad de 6 Zaragoza, Miguel Servet, 177, 50013-Zaragoza, Spain 7 b CREDA-UPC-IRTA. Edifici ESAB – Campus del Baix Llobregat 8 Av. del Canal Olimpic, s/n, 08860-Castelldefels (Barcelona, Spain) 9 10 11 Abstr...

This study aimed to establish whether sheep flock production losses due to nematode (worm) infections are typically greater in mature sheep selected for anthelmintic treatment at random compared to sheep selected for treatment based on low (poorer) body condition score (BCS). The study also examined the proportion of sheep in flocks that could be left untreated before production losses became e...

The effects of two kinds of Escherichia coli (E. coli) strain, wild-type E. coli W3110 and E. coli nir-Ptac, which has enhanced NO(2) reduction activity, on oral CH(4) emission and NO(3) toxicity in NO(3)-treated sheep were assessed in a respiratory hood system in a 4 x 6 Youden square design. NO(3) (1.3 g NaNO(3)/kg(0.75) body weight) and/or E. coli strains were delivered into the rumen throug...

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Sheep production is present on all continents and has been practiced in Brazil since the colonization. In this study, the multitemporal dynamics of sheep production in Brazil is examined using official government data (Brazilian Institute for Geography and Statistics-IBGE) from 1976 to 2010. Maps of flock growth rates and growth acceleration maps by municipality were elaborated. The Southern st...

Rates of production and oxidation of ruminal acetate were measured in young sheep (1) infected with T. colubriformis; (2) kept worm-free and pair-fed to (1); and (3) kept worm-free and given feed ad lib. Both voluntary food consumption and the production rate of acetate were reduced by up to 76 per cent in sheep on treatment (1) compared with (3). Acetate production rate was 30 per cent lower i...

Sheep production in Canada is a small industry in comparison to other livestock systems. Because of the potential for expansion of the sheep industry in Canada, the GHG emissions budget of this industry was assessed in this paper. The GHG emissions from Canadian lamb production were compared with those from the Canadian beef industry using the ULICEES model. The GHG emission intensity of the Ca...

Improvement of milk production traits in dairy sheep is required to increase the competitiveness of the industry and to maintain the production of high quality cheese in regions of Mediterranean countries with less favourable conditions. Additional improvement over classical selection could be reached if genes with significant effects on the relevant traits were specifically targeted by selecti...

The worldwide production of sheep milk was 9,246,922 tonnes in 2009, whereas dairy cows produced 583,401,740 tonnes (FAOSTAT, at http://faostat.fao.org; accessed July 2011). The dairy sheep production is based on the utilization of local breeds of small or moderate effective and well adapted to local conditions in the different Mediterranean countries. This peculiarity contrasts with the "Holst...