Boletim de Indústria Animal http://www.iz.agricultura.sp.gov.br/bia/index.php/bia <p align="center"><img src="/bia/public/site/images/fprado/download2.jpg" alt=""></p> <p align="justify"><span style="font-size: medium; font-family: 'book antiqua';">O Boletim de Indústria Animal-BIA é uma revista científica de produção animal e áreas afins, de publicação contínua de acesso livre, on-line, editado pelo Instituto de Zootecnia, da Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo. O BIA tem por objetivo publicar artigos científicos originais em português e inglês, que contribuam para o desenvolvimento da produção animal, nas áreas de Aquicultura, Etologia e Ambiência, Forragicultura e Pastagens, Genética, Melhoramento Animal, Métodos Quantitativos e Economia, Nutrição Animal, Qualidade de Produtos de Origem Animal, Reprodução Animal, Sanidade Animal, e Sistemas de Produção e Agronegócios. Os manuscritos enviados ao Boletim de Indústria Animal devem ser inéditos e não podem ser publicados ou submetidos à publicação em outro meio de divulgação simultaneamente, com exceção de anais de congresso. O BIA publica artigos científicos. O conteúdo dos manuscritos submetidos à publicação no BIA é de responsabilidade exclusiva de seu(s) autor(es)</span><strong style="font-size: medium; font-family: 'book antiqua';"><em>.</em></strong></p> Instituto de Zootecnia pt-BR Boletim de Indústria Animal 1981-4100 <p>Os autores não serão remunerados pela publicação de trabalhos, pois devem abrir mão de seus direitos autorais em favor deste periódico. Por outro lado, os autores ficam autorizados a publicar seus artigos, simultaneamente, em repositórios da instituição de sua origem, desde que citada a fonte da publicação original seja Boletim de Indústria Animal. A revista se reserva o direito de efetuar, nos originais, alterações de ordem normativa, ortográfica e gramatical, com vistas a manter o padrão culto da língua e a credibilidade do veículo. Respeitará, no entanto, o estilo de escrever dos autores. Alterações, correções ou sugestões de ordem conceitual serão encaminhadas aos autores, quando necessário. Nesses casos, os artigos, depois de adequados, deverão ser submetidos a nova apreciação. As opiniões emitidas pelos autores dos artigos são de sua exclusiva responsabilidade. Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob a Licença Creative Commons Attribution (CC-BY-NC). A condição BY implica que os licenciados podem copiar, distribuir, exibir e executar a obra e fazer trabalhos derivados com base em que só se dão o autor ou licenciante os créditos na forma especificada por estes. A cláusula NC significa que os licenciados podem copiar, distribuir, exibir e executar a obra e fazer trabalhos derivados com base apenas para fins não comerciais.</p> 80 anos de História - Aniversário BIA http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1781 C. M. P. Barbosa ##submission.copyrightStatement## 2021-01-29 2021-01-29 78 Pupunha heart of palm residue silage as an option of roughage for ruminants http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1757 <p>It was aimed in this study to evaluate the ensiled pejibaye&nbsp; residue in the feeding of ruminants as roughage. For the <em>in vitro</em> digestibility assay, a randomized block design was used, with four treatments (pejibaye residue without additives; pejibaye residue + banana residue; pejibaye residue + rice residue and pejibaye residue + citrus pulp), with four replications. The variables studied were: chemical composition, specific mass, pH, average particle size, fermentation temperature and fermentative losses. Apparent digestibility was performed with sheep in a completely randomized design, to evaluate the same treatments mentioned above, using five replications. Heart-of-palm pejibaye residue silages showed average particle size, pH and density values within the range appropriate for their manufacture. Among the additives used in this study, silage with 15 g/100g of rice provided improvements in several nutritional parameters, such as DM, NDF, ADF, CF and NDF/NFC. High moisture content impairs the ensiling process, but it was solved with high dry matter content ingredients addition to promote the material stability.</p> J. E. Moraes T. L. Reis E. J. Fuzitani E. R. Damatto Júnior C. M. T. Maioli W. V. B. Soares M. S. Bueno V. T. Paulino ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-nd/4.0 2021-01-29 2021-01-29 78 1 23 10.17523/bia.2020.v77.e1491 Teeth wear of piglets in lactation phase: performance and injuries aspects http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1716 <p>Piglets are born with a total of eight teeth and on the second day of life, teeth wear management is carried out to avoid lesions on the sows' ceilings and on the faces of the piglets. For this, an electric wearer is used that only wears the apex of the teeth. In this experiment, a comparison of twelve litters divided into: a control group (CG) was performed, which the intact teeth were kept ; with the management of tooth wear and treatment group (TG). The animals were followed from the first day of life until weaning.&nbsp; The weighing was carried out on the respective days of life: second, seventh, fourteenth and twenty-first. It was observed that the fights between piglets and for the ceilings did not present significant difference, on the other hand the injuries caused by the teeth and the dirt injuries had significant difference with greater presence in the group without wear. In the comparison of the piglets’ daily weight gain, there was noted that no significant difference between two groups was observed, which can state that the non-wear of the teeth does not interfere in the daily weight gain, however it was concluded that the animals without wear (CG) had a higher incidence of dirt lesions.&nbsp;</p> J. Tasca B. P. Santarosa H. B. Hooper S. R. S. Surian ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-nd/4.0 2021-01-29 2021-01-29 78 1 10 10.17523/bia.2020.v77.e1490 Evaluation of reactivity and stunning efficiency in cattle before and after slaughterhouse staff training http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1675 <p>The study aimed to evaluate the reactivity, as well as the efficacy of stunning in cattle before and after staff training at the slaughterhouse. For reactivity evaluation, vocalization, slips, falls, use of shockers and presence of lying animal were observed for handling in the corridor, bathing station and at the end of raceway in front of the stunning box. For stunning evaluation, shots applied to each animal to complete stunning and the distance between the shot site and the correct position for stunning were measured. Through mapping the main deficiencies and failures in each handling region, a training was elaborated focused on adoption of correct handling practices. After the informational lecture, data was collected again using the same procedures and in the same handling regions. After training, the quantification of all handling variables was considerably lower in the three regions of the pre-slaughter course, and there was a significant reduction in the bathing station and at the end of raceway in front of the stunning box (P&lt;0.05). In addition, there was a significant increase in stunning performed at the correct shooting position and within 2 cm of the target (P&lt;0.001), as well as reduction of shots applied outside of 3 cm (P&lt;0.001). The number of shots required for complete stunning also decreased (P&lt;0.05). Staff training was extremely efficient in reducing harmful variables to animal welfare and in increasing good practices in pre-slaughter handling.</p> L. S. R. Cunha L. S. Escobar C. J. Piazzon H. P. Flores A. G. Gonçalves D. M. Oliveira ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-nd/4.0 2021-05-14 2021-05-14 78 1 13 10.17523/bia.2021.v78.e1492 Occurrence of vaccine or drug reactions in bovine carcass http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1777 <p>The present study aimed to evaluate the occurrence of abscesses from vaccine or drug reactions in the muscle tissue of bovine carcasses and to establish the location of these abscesses in half-carcasses, in a slaughterhouse located in the northwest of the State of São Paulo, under the supervision of the State Inspection Service (SISP). It was possible to identify that 13.50% of the half-carcasses evaluated had vaccine abscesses and of these 91.46% were in the forequarter, 52.50% of these affected the neck, and 27.50% fell. Currently, there is still the presence of abscesses in bovine carcasses from vaccine and drug reactions, which are found in greater proportion in the forequarter, due to the recommendations of this region for the application of vaccines and medications.</p> U. J. A. Souza D. L. Manini J. E. G. Gomes L. C. Pinto B. M. S. Souza ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-nd/4.0 2021-05-14 2021-05-14 78 1 8 10.17523/bia.2021.v78.e1493 Economic analysis of the use of wet brewery residue in sheep diets http://www.iz.agricultura.sp.gov.br/bia/index.php/bia/article/view/1623 <p>The objective of this study was to evaluate the production costs involved in sheep confinement fed diets containing different inclusion levels of wet brewery residue (WBR). The diets were constituted by different WBR proportions in the concentrate (0, 10, 20 and 30%). A total of 20 sheep were used, with an average body weight of 17.5 ± 1.5 kg, at 8 months of age. The experimental period lasted 77 days. The prices of feed ingredients, purchase and sale values of kg of body weight (BW) of the animals practiced in the local market and the interest rate were considered in the economic analysis, using the year 2015 as a reference. In addition, production performance, zootechnical and economic data, and investment and costing expenses were considered to determine the economic indicators. A linear response was observed in terms of average daily gain (P=0.0035) and feed efficiency (P=0.0042) in diets consisting of 20 and 30% WBR, with 0.196 kg of BW/day and 0.291 kg of BW/intake, respectively. The diet containing 20% WBR resulted in greater total production (7,503.07 kg of BW/year), greater daily production (9.78 kg of BW), and lower total expenditure on investments (R$ 0.371/kg of BW). The lowest total expenses (R$ 64,368.99) and the highest profit (R$ 1.32/kg of BW) were observed in the diet with 30% of WBR. The economic analysis showed the financial feasibility of including 20% and 30% WBR in diets for confined sheep.</p> I. C. S. Silva J. A. A. Cutrim Junior D. R. B. Brito A. L. Pereira J. B. Costa W. J. E. Mochel Filho E. M. G. Silva ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-nd/4.0 2021-05-25 2021-05-25 78 1 15 10.17523/bia.2021.v78.e1494