https://rd.uffs.edu.br/handle/prefix/76 2025-12-02T21:48:50Z 2025-12-02T21:48:50Z Zaminhan, Xaiane Ferrari https://rd.uffs.edu.br/handle/prefix/8818 2025-09-18T19:11:46Z 2024-11-01T00:00:00Z

Title: Desempenho de bezerros de corte de diferentes grupos genéticos após suplementação Author: Zaminhan, Xaiane Ferrari First advisor: Mota, Marcelo Falci Abstract: This study aimed to evaluate the performance of beef calves from different genetic groups after dietary supplementation. The experiment was conducted at São José Farm, located in southwestern Paraná, Brazil, with a total of 176 calves. The animals were divided into three main genetic groups, resulting from crosses between Bos indicus (zebu) and Bos taurus (European breeds), and were supplemented with a concentrate using the creep-feeding system. The supplementation consisted of a mixture of ground corn grain, soybean meal, and mineral premix, with 22% crude protein, provided daily to the calves. The main objective was to assess the impact of supplementation on the weight gain of calves up to weaning, analyzing the interaction between nutrition and genetics. The results showed that supplemented calves had higher daily weight gains compared to non-supplemented ones, with particular emphasis on crossbred calves between Bos taurus and Bos indicus, which showed better performance. The creep-feeding supplementation accelerated the development of the animals and facilitated the transition to a post-weaning diet. Statistical analysis revealed significant differences in average daily gain (ADG) between genetic groups and between males and females, with males generally exhibiting higher weight gains. The genetic group with a higher proportion of Bos taurus showed the best weight gain results. The study concludes that the combination of strategic dietary supplementation and genetic crossbreeding can optimize the performance of beef calves, highlighting its importance as an essential tool for efficient management in cattle farming. Publisher: Universidade Federal da Fronteira Sul Type: Monografia

2024-11-01T00:00:00Z Silva, Susamara Souza https://rd.uffs.edu.br/handle/prefix/8814 2025-09-18T18:46:31Z 2024-12-02T00:00:00Z

Title: Perfil produtivo de propriedades da agricultura familiar do município de Realeza, Paraná Author: Silva, Susamara Souza First advisor: Pinto Neto, Adalgiza Abstract: Family farming in Brazil is regulated by Law No. 11,326/2006, which establishes the criteria for classifying family-owned properties, with the predominant use of family labor and an area limited to four fiscal modules. Approximately 80% of agricultural establishments in the country are family farms. Regarding milk production, the state of Paraná is the third largest producer in Brazil, with 86% of producers being smallholders. The municipality of Realeza is located in the southwest region of the state of Paraná and has 917 rural establishments, with family farming accounting for 90% of these establishments. Given the scarcity of research related to the profile of family farms, this study aimed to establish the productive profile of family farms in the municipality of Realeza, Paraná. To this end, semi-structured questionnaires were administered to 177 family farms in the municipality, including questions regarding ownership, livestock, and the family's social profile. The data were tabulated and presented descriptively. The results showed that most producers are men, aged 51 to 60, have completed elementary school, and have been in the industry for over 15 years. The predominant production area is five hectares, with an average of 22 animals per property and 10 animals in production. The dairy herd has an average of 10.44 lactating females, with bucket-at-foot milking being the predominant system, and semi-intensive production systems are present on almost 70% of properties. Regarding the reproductive profile, it was noteworthy that 56.60% of properties use natural breeding, with the bull present on 69.18% of properties, and gestational diagnosis was performed on 35.15%. Regarding income from dairy farms, 33.33% received between R$2,000 and R$5,000, and 28.95% of respondents reported spending between 26% and 50% of the gross income on dairy farming activities. Access to financing is available to 54.8% of producers, with PRONAF (National Agricultural Fund for Agricultural Development) being the most widely used, while 57.38% do not receive technical assistance. This study concludes that family farms in the municipality of Realeza are primarily comprised of more experienced producers, who employ semi-intensive practices, predominantly use natural breeding, rely on credit lines such as PRONAF, and have limited access to technical assistance. Publisher: Universidade Federal da Fronteira Sul Type: Monografia

2024-12-02T00:00:00Z Savi, Daniela Carolini https://rd.uffs.edu.br/handle/prefix/8811 2025-09-18T18:38:38Z 2024-11-01T00:00:00Z

Title: Efeitos da vacinação sobre os parâmetros fisiológicos de bezerras leiteiras Author: Savi, Daniela Carolini First advisor: Blagitz, Maiara Garcia Abstract: The study investigated the impact of isolated and combined vaccination on the physiological parameters of dairy calves. Twenty-seven female cattle aged 6 to 12 months were divided into three distinct groups. Group 1 (G1) received simultaneous vaccinations for rabies and clostridial infections, Group 2 (G2) was vaccinated only for clostridial infections, and Group 3 (G3) received exclusive vaccination for rabies. During vaccination, the animals were evaluated at five different time points (M0 = -3 days, M1 = D0 before vaccination, M2 = D0 during vaccination, M3 = 15 days after vaccination, and M4 = 30 days after vaccination). Assessments were performed using electrocardiograms, rectal temperature (RT), and plasma cortisol levels. When compared between the different vaccination groups, cortisol and RT levels showed no difference. In contrast, significant differences were observed in RT and cortisol levels at different time points during vaccination in all groups, when analyzed individually. In G1, differences in RT were observed between M1 and M3, as well as between M3 and M4. Regarding cortisol, there were differences between M0 and M3, as well as between M0 and M4. In G2, differences in RT were observed between M1 and M2, M3 and M4, and in cortisol between M0 and M2, M0 and M3, and M0 and M4. In G3, no differences in RT were observed. However, regarding cortisol, there were differences between M0 and M2, as well as between M0 and M4. Regarding heart rate variability, there were no significant differences between groups or time points. These findings emphasize the importance of understanding vaccination-related stress, highlighting that animals can be vaccinated simultaneously without negative impacts on their development and health, significantly facilitating on-farm management. Thus, administering vaccines at a single point optimizes time and reduces stress, allowing for greater health control with a simplified approach, reducing operational costs, and making the process more efficient. Publisher: Universidade Federal da Fronteira Sul Type: Artigo Cientifico

2024-11-01T00:00:00Z Otto, Mariana Signori https://rd.uffs.edu.br/handle/prefix/8807 2025-09-18T18:27:01Z 2024-10-18T00:00:00Z

Title: Leishmaniose tegumentar em porquinho-da-índia (Cavia porcellus): relato de caso Author: Otto, Mariana Signori First advisor: Elias, Fabiana Abstract: Leishmaniasis is a group of infectious diseases caused by protozoa of the genus Leishmania, which can affect various animal species, including humans. Guinea pigs (Cavia porcellus) are the vertebrate hosts of Leishmania enriettii. Transmission to these rodents occurs through the bite of a female invertebrate, with sandflies being the most likely vectors. The outbreak in question involves three cases of cutaneous leishmaniasis in guinea pigs, which were treated at the University Veterinary Hospital Superintendence (SUHVU) of the Universidade Federal da Fronteira Sul. Clinically, the animals presented severe nodular and crusted cutaneous lesions, primarily on the nasal region and ears. Cytology from lesion samples collected by fine-needle aspiration (FNA) revealed a large number of parasitized macrophages with abundant cytoplasm containing multiple vacuoles compatible with Leishmania sp. in its amastigote form, ovoid in shape, with identifiable kinetoplast and nucleus. Two animals were euthanized, and histopathological evaluations and organ sample collections for histopathology and molecular diagnosis through immunohistochemistry and conventional polymerase chain reaction (PCR) were conducted. Skin histopathology revealed acanthosis, thickening of the granular layer, and both para- and orthokeratotic hyperkeratosis. The lesions consisted of necrotic foci and marked diffuse inflammation, predominantly histiocytic, with resident macrophages displaying abundant cytoplasm filled with amastigote forms. The skin appendages were obliterated by inflammation. Immunohistochemistry confirmed the presence of the parasite in the skin, while in the liver, antigenic remnants in the centrilobular region were merely indicative of the parasite's presence. The PCR test was confirmatory, with skin and spleen bands from samples of one of the affected animals being compatible with the control band of L. enriettii. This is the first report of this subspecies in cases of spontaneous infection in the southeastern region of Paraná. Publisher: Universidade Federal da Fronteira Sul Type: Artigo Cientifico

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