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De Lima L.D.,Embrapa Caprinos e Ovinos | De Almeida Rego F.C.,University of Northern Paraná | Koetz Jr. C.,UNOPAR | De Azambuja Ribeiro E.L.,State University Londrina | And 5 more authors.
Semina:Ciencias Agrarias | Year: 2013

This study aimed to investigate the effect of diets with different proportions of concentrate in finishing lambs Texel on carcass characteristics and meat sheep. Twelve Texel lambs with an initial weight of 20.1 ± 2.34 kg were used. The treatments consisted of three levels of concentrate in the total ration (60,80 and 100%) and four replicates per treatment.As the values of loin eye area, finish and weight of rib and ham were higher (P <0.05) for animals receiving 80 and 100% concentrate diet compared to animals consuming 60%. Lambs receiving 100% of the diet with high grain had higher incomes, loin eye area and carcass finish, these characteristics relevant to the issue by providing animals most productive portion of edible meat and satisfactory quality to the consumer market. The levels of concentrate in the diet did not alter the qualitative parameters and sensory from lamb feedlot these characteristics that may ensure greater acceptance of the final product, so it is recommended the use of diets containing high concentrate to sheep.

Borsoi A.,University of Tuiuti do Paraná | Gonsalves C.C.,Discentes de Graduacao do Curso de Medicina Veterinaria | Pires E.R.M.,Discentes de Graduacao do Curso de Medicina Veterinaria | Rodrigues L.B.,University Of Passo Fundo | And 2 more authors.
Semina:Ciencias Agrarias | Year: 2015

Campylobacteriosis is a zoonosis, a disease transmitted to humans from animals or animal products. The primarily source of Campylobacter infection in human is believed to be the handling and/or consumption of contaminated meat, especially poultry meat. Although in humans such infections are generally self-limiting, complications can arise and may include bacteraemia, Guillain-Barré syndrome, reactive arthritis and abortion. In this study, 32 birds were divided in 2 groups: a control (C) group and an inoculated (I) group, with 16 birds each. The I group was inoculated orally with 108 CFU/mL of Campylobacter jejuni ATCC 33291, whereas the C group was inoculated with a saline solution. Four chicks per group were euthanized by cervical dislocation at 0, 7, 14 and 21 days post-inoculation (pi). Cecum samples were collected for microbiological analyses. The samples were processed by two plate count methodologies, one developed by the USDA (United States Department of Agriculture) in 2011 (B method) and the other a serial dilution direct count method (A method). All birds from the C group remained negative until day 21. For the I group, the B method was found to be statistically superior to the A method for counting the recovered cells from the cecal contents at 7, 14 and 21 days pi. The microbiological direct plating counting method is a cost effective and rapid method to determine the level of contamination in broilers to help risk assessment programs at the industry level.

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