Sheep meat production in the Brazilian semi-arid region: crossing between indigenous breeds

Landim, Aline Vieira; Roriz, Natan Donato; Silveira, Robson Mateus Freitas; Vega, Wilder Hernando Ortiz; Costa, Hélio; Sousa, Luiz Carlos Oliveira de; Alves, Genilson Cesar; Ferreira, Josiel; Mourão, Gerson Barreto

doi:10.1007/s11250-021-02947-1

Cited by 11 publications

(1 citation statement)

References 33 publications

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“…The Brazilian semi-arid region has traditionally raised sheep with a total of 68.5% of the national effective herd [Brazilian Institute of Geography and Statistics (IBGE, 2017)], with the potential for semi-intensive exploitation in sheep meat farming mainly using native breeds and their crosses to increase meat production (LOBO, 2019). Among these breeds, Morada Nova (M N ) is one of the main genetic resources of hair sheep in the Brazilian semi-arid region, being recognized for its resistance to gastrointestinal endoparasites (TOSCANO et al, 2019), adaptability to the thermal environment (COSTA, et al, 2018), potential as a maternal breed in terminal crossbreeding (LANDIM, et al, 2021), fertility without seasonal influence (MOURA et al, 2019), and carcasses with fatty acid profiles with potential benefit to human health (LAGE et al, 2020). Certainly, on a scientific basis, the Brazilian Agricultural Research Corporation (Embrapa Goats & Sheep) recommended carrying out a reproductive and productive survey of the breed in order to encourage its sustainable inclusion in Brazilian sheep production systems (LOBO, 2019).…”

Section: Introductionmentioning

confidence: 99%

Morada Nova lambs’ meat production potential description through morphometric evaluation

et al. 2023

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Morada Nova breed has a low effective herd, and its white variety is in risk of extinction. The selection of individuals based on breed standard without correlation with productive aptitude is predominant today. We believe that the best way to rescue this valuable genetic resource is to describe its productive potential for commercial use. Thus, this study described the meat production potential of Morada Nova lambs through morphological and zoometric data, performance and carcass characteristics. Twenty-four non-castrated male lambs from two genetic groups were used: Morada Nova red (MNR) and crossbreed Morada Nova (red x Morada Nova white-MNF1) distributed in a completely randomized design. Univariate and multivariate analysis were used. The yields of commercial cuts and the physicochemical characteristics and qualitative measurements of the carcass were similar between the genetic groups. Seven of the 28 characteristics of the carcass were greater in MNF1 lambs. The chest height, rump height and anamorphosis index showed to be important variables in the choice of MN lambs with meat production potential. Based on factor and hierarchical cluster analysis, the Morada Nova beef morphometric index (MNBMI) was created. Both of groups have high thoracic development, ability to produce meat, weight gain, feeding efficiency and breathing capacity, infusing greater rusticity and adaptability; however, the application and validation of the developed index showed superiority for meat production in the crossed lambs. Thus, the MNF1 lambs are a sustainable option for sheep production in drylands.

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Section: Introductionmentioning

confidence: 99%