ABSTRACT
This work evaluated the digestibility of the experimental diets, the performance and the economic viability of pigs in the finishing phase fed with diets containing increasing levels of cottonseed meal (CM) with enzymatic complex. In the digestibility test, 35 barrows with an average weight of 54.54 ± 2.49 kg were used and for the performance and economic viability test, 30 pigs with an average weight of 55.47 ± 5.3 kg were used. In both trials, the animals were distributed in five diets: control diet (0), control diet plus the enzyme complex (0E), diet with 5% CM plus the enzyme complex (5E), diet with 10% CM plus the enzyme complex (10E), and a diet with 15% CM plus the enzyme complex (15E). The digestibility coefficients of dry matter (DM), organic matter (OM) and crude protein (CP) reduced with the inclusion of CM with enzyme complex in the diet of pigs in the finishing phase, in contrast to the ether extract (EE), which improved as the inclusion of CM increased. No statistical difference (P > 0.05) was found in the performance when all diets were compared; however, when comparing only the diets that contained the enzyme complex separately, a negative linear effect (P = 0.015) was observed for the feed conversion (FC) in period 2. The diets have no effects on periods 1 and 3. Diets 0, 5E, 10E, and 15E, presented better net income (P = 0.019) in March to May 2018 due to the different levels of inclusion of CM with enzyme complex; in the other evaluated items, there were no statistical differences (P > 0.05). The inclusion of CM and enzyme complex in the diets reduced the digestibility of the dietary components; however, it did not reflect on the performance and was not financially viable in the studied scenario.
Subject(s)
Animal Feed , Animal Nutritional Physiological Phenomena , Animal Feed/analysis , Animals , Cottonseed Oil , Diet/veterinary , Dietary Supplements , Digestion , SwineABSTRACT
A Brucelose é uma doença infecto-contagiosa provocada por bactérias intracelulares facultativas do gênero Brucella spp., zoonose de distribuição mundial. As principais manifestações clínicas da doença provocam redução na produção dos animais, e suas implicações econômicas causam barreiras na comercialização. Objetivou-se pesquisar alterações microscópicas nos linfonodos de bovinos sorologicamente positivos para brucelose, relacionando à reação inflamatória ganglionar como achado indicativo para o diagnóstico histopatológico da doença. Foram colhidas amostras de linfonodos cervicais superiores em vinte bovinos fêmeas, 10 da raça Gir e 10 da raça Nelore, enviadas ao Laboratório de Patologia Animal da Universidade de Uberaba. Ao realizar o exame macroscópico dos linfonodos, verificou-se que todos se apresentavam reacionais, mesmo que discretamente. Na leitura das lâminas histopatológicas, diagnosticou-se em 100% deles linfadenite crônica, compatível com o quadro de brucelose. O impacto econômico e zoonótico da doença justificam a necessidade definitiva do estabelecimento de programas de controle e erradicação, sendo que o diagnóstico representa grande relevância neste processo, e o exame histopatológico perfaz importante auxílio na confirmação do diagnóstico sorológico.
Brucellosis is an infectious and contagious disease caused by intracellular bacteria of the genus Brucella spp., zoonosis of worldwide distribution. The main clinical manifestations of this disease cause reduction in the animals production, and their economic implications provoke barriers in trade. The aim of this study is to find microscopic changes in cattle lymph nodes from animals serologically positive for brucellosis, associating the inflammatory reaction nodes as indicative findings for the histopathologic diagnosis of the disease. Samples were collected from upper cervical lymph nodes in twenty cows, ten from Gir breed, and ten, Nellore, sent to Laboratory of Animal Pathology at the University of Uberaba. In macroscopic examination of the lymph nodes, it was found that all had been reactive even if discretely. In reading the histopathological slides, it was diagnosed in 100% of cases, the same chronic lymphadenitis, compatible with the framework of brucellosis. The economic impact and the zoonotic characteristic of the disease justify the definitive need to establish programs of control and eradication, as the diagnosis is very relevant in this process, histopathological examination turns an important aid to confirm serological diagnosis.
La brucelosis es una enfermedad infectocontagiosa causada por bacterias intracelulares facultativas del género Brucella spp, zoonosis de distribución mundial. Las principales manifestaciones clínicas de la enfermedad provocan reducción en la producción de los animales, y sus implicaciones económicas causan obstáculos en la comercialización. En esta investigación se buscó encontrar cambios microscópicos en los ganglios linfáticos de ganados sorológicamente positivos para brucelosis, listando la reacción inflamatoria de los ganglios linfáticos como indicativo para el diagnóstico histopatológico de la enfermedad. Las muestras fueron recolectadas en los ganglios linfáticos superiores del cuello de veinte vacas, diez de la raza Gir, y diez de la raza Nelore, y enviadas al Laboratorio de Patología Animal de la Universidad de Uberaba. Al realizar el examen macroscópico de los ganglios linfáticos, se comprobó que todos se presentaban reactivos, aunque discretamente. En la lectura de las diapositivas histopatológicas, se diagnosticó en 100% de ellos linfadenitis crónica, compatible con el cuadro de brucelosis. El impacto económico y zoonótico de la enfermedad justifican la necesidad definitiva de establecer programas de control y erradicación, siendo que el diagnóstico representa gran relevancia en este proceso, y el examen histopatológico se convierte en importante ayuda en la confirmación del diagnóstico serológico.
