https://www.alice.cnptia.embrapa.br/alice/handle/item/28 Embrapa Pecuária Sudeste (CPPSE) 2026-08-11T20:06:33Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1188942 Título: Digital livestock management solution for cattle identification, traceability, and real-time monitoring, IoT-based for integrated croplivestock-forest (ICLF) systems. Autoria: BERNARDI, A. C. de C.; GARCIA, A. R.; GUIMARAES, E. da S.; TONATO, F.; MEDEIROS, S. R. de; BARIONI JUNIOR, W.; PORTUGAL, J. A. B.; ALVES, T. C.; CAVALCANTE, W. P.; SERÃO FILHO, M.; GAIOLLI JÚNIOR, C. Conteúdo: Brazil is a global player in the beef industry with the world's largest commercial bovine herd, exceeding 230 million head, and leads the international market, accounting for approximately 25% of the global beef trade, reaching over 170 international markets. The edaphoclimatic diversity, high-performance genetics, rigorous sanitary protocols, and the adoption of a technological framework for tropical livestock, altogether, explain the decoupling of Brazilian ranching from extensive, low-productivity systems toward sustainable intensification. The increasing consumer demand for information on food quality, safety, and production conditions poses a challenge for livestock production, requiring greater control over animal production. Precision livestock farming (PLF) is a potential solution enabling continuous, real-time monitoring of animal health, welfare, and behavior. The "National Bovine Traceability Plan (PNIB)" aims to achieve animal traceability by electronic tags for an individual identification system to track history, location, and movement of the entire Brazilian herd by 2032, enhancing sanitary control and meeting international market demands. The transition toward a digitized livestock production system needs the deployment of a low-latency, cost-competitive cyber-physical architecture capable of autonomous individual identification, high-precision localization, and longitudinal behavioral monitoring. This research implements a scalable Digital Livestock Management Solution (DLMS) that utilizes a multi-layered communication protocol and was conducted at Embrapa Pecuaria Sudeste, São Carlos, SP, Brazil (21°57' S, 47°50' W, 860 m), in both beef and dairy systems. The system employs Taggen Beacon 5.1® (Taggen Industries, Campinas, SP, Brazil), a Bluetooth low energy (BLE) tag affixed to animal collars, with sensor nodes (Taggen Gateway® (Taggen Industries, Campinas, SP, Brazil)) cloud-connected via Long Term Evolution (LTE or 4G) or Wi-Fi. Data is integrated into the TG-AGRO® platform, a cloud-based management architecture for real-time access across portable devices (smartphones or tablets). The system operates as follows: the beacon module periodically broadcasts BLE advertising packets that include unique identifiers and telemetry data. The gateway performs active scanning, acquires Received Signal Strength Indicator (RSSI) metrics, and appends temporal metadata (timestamp). In beacon-equipped GNSS (Global Navigation Satellite System) configurations, the gateway correlates these packets with spatial coordinates. DLMS's multi-source power system allows autonomous operation via solar energy, grid connections, or integration with mobile agricultural equipment. For a reliable telemetry transmission over 350 m, the system uses a motion-aware RSSI smoothing algorithm (Log-Distance Path Loss Model) to mitigate multipath fading. The system is fully interoperable with legacy LF and HF-RFID protocols to ensure backward compatibility with the Brazilian Sisbov framework. Evaluation parameters included daily detection rates, report density, and message latency. Field results demonstrated a daily detection rate exceeding 98.5% of the herd, with gateways processing over 500 tags per minute in highdensity areas. The system optimizes power consumption by adapting transmission intervals (5 s to 15 min), ensuring data integrity and long-term tag durability in remote settings. The outcome demonstrates a reliable, compatible telemetry system that, despite the logistical limitations of remote settings, ensures data integrity and enables real-time decision-making. This architecture goes beyond limitations of conventional passive tracking by offering a dynamic framework for real-time spatiotemporal management across diverse livestock production systems. Additionally, information flow between on-farm operations and external regulatory or commercial stakeholders is facilitated by the incorporation of user-centric data visualization interfaces. 2026-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1188866 Título: Production of anti-ES24 antibodies from hyperimmunized sheep for the control of Haemonchus contortus. Autoria: KAPRITCHKOFF, R. T. I.; CAMPOS, E. M. de; BELLO, H. J. S.; CUNHA, A. F. da; COSTA, E. C. da; QUEIROZ, M. G. A.; CORRÊA, L. G. P.; ESTEVES, S. N.; CHAGAS, A. C. de S.; OKINO, C. H. Conteúdo: Haemonchus contortus, the main gastrointestinal nematode parasitizing sheep, has developed resistance to all classes of anthelmintics, making it essential to study alternative control methods that reduce reliance on these drugs. This study aimed to develop a passive immunization protocol by producing specific antibodies against the 24 kDa excretorysecretory protein of H. contortus (ES24), which has been associated with immune protection against this parasite. The experiment was conducted at Embrapa Southeast Livestock (São Carlos, SP), using 10 Santa Inês sheep (G1), aged between 8 and 12 months, naturally infected with H. contortus. Each animal received a vaccine emulsion containing ES24 plus adjuvants, administered subcutaneously above the right scapula. Another group (G2), consisting of 6 sheep of the same breed, age, and kept in the same paddock, did not receive immunization. Weekly, blood samples were collected to evaluate packed cell volume (PCV), and fecal samples were collected to perform fecal egg counts (FEC) starting from D0 (day of first immunization). Serum samples were also collected at these intervals to measure anti-ES24 IgG, IgM, and IgA isotypes by indirect ELISA.On D14 and D28, additional serum samples were obtained using blood collection bags without anticoagulant, within the limit of 10 mL per kg of body weight, for large-scale production of specific antibodies. The results showed that G1 had higher levels of anti-ES24 antibodies for all isotypes compared to G2, with a notable increase in IgM on D14, which is associated with greater protection against H. contortus. During the same period, G1 also showed higher PCV values and lower FEC, indicating better infection control. Given the strong immune response observed in the immunized sheep, the protocol developed may become a viable and promising immunoprophylactic strategy to help control H. contortus in sheep. 2025-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1188336 Título: Genetic associations of temperament and facial hair whorls with productive, reproductive, and carcass traits in Canchim beef cattle. Autoria: BESSA, A. F. de O.; CÂMARA, G. M. dos S.; ZUCATELLE, C.; FUTEMA, F. K.; SILVA, R. T. da; CENEDEZE, G.; BUGNER, A. L. P.; SOUZA, V. A. F. de; MAFFEI, W. E.; RIBEIRO, A. R. B.; MARCONDES, C. R.; BUZANSKAS, M. E. Conteúdo: Objective: This study aimed to estimate genetic parameters and evaluate genetic correlations between temperament and facial hair whorl traits with productive, reproductive, and carcass traits in Canchim beef cattle. Methods: Phenotypic records from animals born between 2013 and 2022 were analyzed. Temperament was assessed using behavioral scores (movement, tension, breathing, vocalization), reactivity measured by accelerometers, and flight time, while facial hair whorls were characterized by presence, number, position, and height. Productive, reproductive, and carcass traits included body weights, scrotal circumference, and ribeye area at different ages. Genetic parameters were estimated using single- and two-trait animal models. Results: Heritability estimates ranged from low to high (0.09 to 0.67), indicating sufficient additive genetic variability for all trait groups. Favorable genetic correlations were observed between body weight traits and temperament measures, particularly vocalization and flight time, as well as between ribeye area and reactivity flight time. Scrotal circumference at 12 and 18 months of age showed moderate to high genetic correlations with facial hair whorl traits, especially whorl number and position. Conclusion: These results indicate that selection for productive and reproductive traits can lead to indirect improvements in temperament. Moreover, pre-selection for the absence of facial hair whorls, combined with selection for body weight and scrotal circumference, may promote favorable genetic gains in temperament, supporting their inclusion in Canchim breeding programs. 2026-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1188308 Título: Atributos Anatômicos de Lâminas Foliares de Paspalum spp. Autoria: CATIAN, G.; LEMPP, B.; BATISTA, L. A. R.; CEOLIN, A. C.; GOMES, R. A.; SILVA, E. B. de A.; MORAIS, M. da G. Conteúdo: A qualidade de plantas forrageiras determina o desempenho animal em gramíneas tropicais quando não ocorre limitação de forragem em oferta. Os animais sob pastejo são seletivos, colhendo preferencialmente lâminas foliares, as quais diferem em qualidade entre os genótipos devido ao grupo anatômico a que pertencem. Os fatores que interferem na qualidade das gramíneas forrageiras podem ser de origem anatômica, física e química, além daqueles relacionados à estrutura da vegetação [1]. Os tecidos mais digestíveis são as células do mesófilo (MES) que contêm alto teor de proteína bruta no conteúdo celular e carboidratos digestíveis na parede, podendo ser degradados por enzimas extracelulares, pois apresentam somente a parede celular primária, com espessura de 0,1 a 0,2 µm e não são lignificáveis [2]. Já as da bainha parenquimática dos feixes vasculares (BPF), cujas células possuem alto teor de proteína e amido em seu conteúdo e pode estar associadas à lignina, como também as da epiderme (EPI) são as mais resistentes à degradação, requerendo inicialmente o ataque físico [3]. Van Soest [4] considerou que a lignina é o primeiro fator que limita a degradabilidade da parede celular de forrageiras. As diferenças de origem anatômica entre as lâminas de gramíneas tropicais que interferem no desempenho animal, também estão relacionadas ao arranjo dos diferentes tecidos, à localização de esclerênquima (ESC), à espessura da parede da BPF e da proporção de tecidos indigestíveis na seção transversal. A proporção de ESC ao longo da seção transversal geralmente é baixa. Entretanto, Wilson et al. [5] observaram arranjo de células de ESC entre as células da EPI e as da BPF, formando a estrutura girder. Esta estrutura girder pode ter efeito direto na resistência que as lâminas oferecem à digestão, interferindo na taxa de degradação dos tecidos. O objetivo do trabalho foi caracterizar lâminas foliares de Paspalum spp. quanto aos atributos anatômicos associados ao potencial qualitativo. 2007-01-01T00:00:00Z