Article
Veterinary Sciences
Marcilio S. Mendes, Jocely G. Souza, Caio Julio L. Herbster, Antonio S. Brito Neto, Luciano P. Silva, Joao Paulo P. Rodrigues, Marcos I. Marcondes, Ronaldo L. Oliveira, Leilson R. Bezerra, Elzania S. Pereira
Summary: The study estimated the energy and protein requirements for maintenance and growth of lambs, with feed restriction leading to reduced body fat and energy concentration, while protein showed a quadratic response. The requirements for net energy and protein for maintenance were found to be 71.00 kcal/kg EBW0.75/day and 1.76 g/kg EBW0.75/day, respectively. The findings suggest that the net energy for crossbreed Dorper x Santa Ines lambs is similar to international recommendations, but requirements for gain may be lower.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Tairon Pannunzio Dias-Silva, Adibe L. Abdalla, Thiago F. V. Bompadre, Ana Carolina B. C. Fonseca-Pinto, Alessandro F. T. Amarante, Helder Louvandini
Summary: This study aimed to analyze the changes in bone density in lambs induced by infection with Trichostrongylus colubriformis using computed tomography images. The lambs were randomly assigned to an infected group (I) (n=9) and a control group (C) (n=9). The infected group was orally infected with 5000 T. colubriformis infective larvae (L3) three times per week for three weeks, totaling 45,000 L3. The results showed that T. colubriformis infection reduced bone density in the 4th rib (P=0.0005), 12th rib region (P=<0.0001), and femur (P=0.0063) of growing lambs.
SMALL RUMINANT RESEARCH
(2023)
Article
Agriculture, Dairy & Animal Science
Antonio Leandro Chaves Gurgel, Gelson dos Santos Difante, Joao Virginio Emerenciano Neto, Cynthia Gabriela Fernandes de Araujo, Marcone Geraldo Costa, Luis Carlos Vinhas Itavo, Itania Maria Medeiros de Araujo, Carolina Marques Costa, Juliana Caroline Santos Santana, Camila Celeste Brandao Ferreira Itavo, Patrick Bezerra Fernandes
Summary: Biometric measurements were used to predict the weights of the primary carcass cuts of Santa Ines lambs finished in tropical pastures, showing that these measurements can accurately and precisely predict carcass weight.
Article
Agriculture, Multidisciplinary
Danillo M. Pereira, Juliana S. de Oliveira, Edson M. Santos, Gleidson G. P. de Carvalho, Jose A. G. de Azevedo, Yohana R. Correa, Alexandre F. Perazzo, Dallyson Y. C. de Assis, Guilherme M. Leite, Paloma G. B. Gomes, Maria A. C. Santos, Nelquides B. Viana
Summary: The study aimed to determine the optimal level of neutral detergent fiber (NDF) to maximize productivity and evaluate the ingestive behavior of feedlot Santa Ines lambs. Results showed that diets containing 27-30% NDF led to maximum intake, digestibility, weight gain, and feed efficiency. The NDF levels also had a significant impact on ingestive behavior variables such as feeding, rumination, and resting periods per day.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Antonio Leandro Chaves Gurgel, Gelson dos Santos Difante, Joao Virginio Emerenciano Neto, Luis Carlos Vinhas itavo, Camila Celeste Brandao Ferreira itavo, Carolina Marques Costa, Geraldo Tadeu dos Santos, Alfonso Juventino Chay-Canul
Summary: This study aimed to develop and evaluate linear, quadratic, and exponential models to predict weaning weight in Santa Ines lambs for meat. The results showed that the first-degree linear model performed the best, with the lowest mean squared error and root mean square error. The external validation also confirmed the accuracy and precision of this model.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Agriculture, Dairy & Animal Science
Angelica Bonafede Martins Teixeira, Bruno Raphael Fasolli Schuh, Veridiana Lourenco Daley, Pedro Henrique Nicolau Pinto, Sergio Rodrigo Fernandes, Jose Antonio de Freitas
Summary: This study aimed to evaluate the performance and the blood biochemical and physiological parameters of Dorper x Santa Ines lambs receiving three levels of metabolizable energy. The results showed that increasing metabolizable energy levels significantly improved the weight gain, dry matter intake, and energy intake of the lambs. With higher metabolizable energy levels, blood biochemical parameters such as creatinine decreased and glucose increased, while physiological parameters like respiratory rate, heart rate, and rectal temperature also increased.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2021)
Article
Infectious Diseases
Clare E. F. Dyer, Naomi E. Clarke, Dinh Ng Nguyen, H. M. P. Dilrukshi Herath, Sze Fui Hii, Russell Pickford, Rebecca J. Traub, Susana Vaz Nery
Summary: This study demonstrates the value of qPCR and SNF as alternatives to standard Kato-Katz methodology for assessing the efficacy of anthelmintics against hookworm infections.
PLOS NEGLECTED TROPICAL DISEASES
(2022)
Article
Agriculture, Dairy & Animal Science
Rodrigo Brito Saldanha, Luis Gabriel Alves Cirne, Lara Maria Santos Brant, Carlindo Santos Rodrigues, Douglas dos Santos Pina, Susiane de Carvalho Matos, Amanda Bastos Grimaldi, Silvia Cheles Bento, Manuela Silva Libanio Tosto, Stefanie Alvarenga Santos, Henry Daniel Ruiz Alba, Gleidson Giordano Pinto de Carvalho
Summary: This study evaluated the differences in feeding efficiency and meat quality between Santa Ines and Dorper lambs. The results showed that Santa Ines lambs had higher feeding efficiency and greater potential for meat production compared to Dorper lambs when kept in the same breeding system.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2022)
Article
Agriculture, Dairy & Animal Science
Mucio F. F. Mendonca, Lais G. Caymmi, Antonio W. O. Silva, Carmo E. A. Biscarde, Ricardo D. G. Silva, Paula Leal, Luciano A. Pimentel, Franklin Riet-Correa, Tiago C. Peixoto
Summary: This study confirmed that the outbreaks of photosensitization in the semi-arid region of Bahia, Northeastern Brazil, are caused by primary photosensitization induced by the consumption of Chamaecrista serpens. It is advisable to avoid grazing on pastures invaded by the plant or to remove them from the pastures immediately after observing the first signs.
Article
Multidisciplinary Sciences
Dayanne Lima Sousa, Marcos Inacio Marcondes, Luciano Pinheiro Silva, Francisco Wellington Rodrigues Lima, Caio Julio Lima Herbster, Jocely Gomes Souza, Joao Paulo Pacheco Rodrigues, Leilson Rocha Bezerra, Ronaldo Lopes Oliveira, Elzania Sales Pereira
Summary: The study found that body weight and daily gain affect the net mineral requirements in Santa Ines lambs, while maintenance requirements vary between different sexes. Furthermore, the trace element requirements are less affected by sex.
SCIENTIFIC REPORTS
(2021)
Article
Parasitology
Jose Gabriel G. Lins, Fabiana A. Almeida, Ana Claudia A. Albuquerque, Collette Britton, Alessandro F. T. Amarante
Summary: In comparison with European sheep breeds, Santa Ines sheep show greater resistance against Haemonchus contortus infections. This study found that Santa Ines lambs are able to mount a robust innate immune response at an early age and exhibit strong resistance against H. contortus infection.
VETERINARY PARASITOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Julia Morgana Vieira Dada, Matheus Luquirini Penteado dos Santos, Pricilla Carvalho Muniz, Maria Luisa Appendino Nunes-Zotti, Flavia Regina Oliveira de Barros, Frederico Marcio Correa Vieira
Summary: This study compared the thermal environments and behavioral responses of sheep under silvopastoral and open pasture systems, finding that the silvopastoral system provided a more comfortable thermal environment for animals to rest and ruminate, while animals in the open pasture system were more likely to exhibit panting behavior.
SMALL RUMINANT RESEARCH
(2021)
Article
Immunology
Mark Bodmer, Andrea Itano, Iain McInnes
Summary: The Small Intestinal Axis has the potential to modulate systemic inflammation by sensing gut lumen contents. Gut mucosal immunity is important for regulating tolerance to food and gut contents without compromising immunity. Targeting mucosal microbial elements in the small intestine can reveal the mysteries of the gut and immune system relationship.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Plant Sciences
Griselda Meza Ocampos, Miguel Torres Numbay, Mohamed Haddad, Lin Marcellin Messi Ambassa, Nelson Alvarenga, Herve Hoste
Summary: This study evaluated the anthelmintic properties of four medicinal plants, namely Kyllinga odorata Valh., Cassia occi-dentalis L., Artemisia absinthium L, and Verbena litoralis Kunth, against gastrointestinal nematodes in small ruminants. The results showed that C. occidentalis, A. absinthium, and K. odorata exhibited the highest anthelmintic activity. These medicinal plants are a valuable source of active compounds with anthelmintic activity.
JOURNAL OF ETHNOPHARMACOLOGY
(2023)
Article
Parasitology
Francesca Shepherd, Caroline Chylinski, Michael R. Hutchings, Joana Lima, Ross Davidson, Robert Kelly, Alastair Macrae, Juha-Pekka Salminen, Marica T. Engstrom, Veronika Maurer, Havard Steinshamn, Susanne Fittje, Angela Morell Perez, Rocio Rosa Garcia, Spiridoula Athanasiadou
Summary: This study found that heather, a commonly found plant in Europe, has anthelmintic properties and can potentially contribute to sustainable GIN control in ruminant production systems. The anthelmintic activity of heather is associated with the presence of specific polyphenol subgroups, including proanthocyanidins and flavonol derivatives.
PARASITES & VECTORS
(2022)
Article
Parasitology
Jose Henrique das Neves, Nadino Carvalho, Nayara Capaldi dos Santos, Joao Ratti Junior, Cyntia L. Martins, Alessandro F. T. Amarante
Summary: The study observed young Nellore cattle born in three consecutive calving seasons over a 12-month infection experiment. Results showed that the albendazole-treated group had lower faecal egg counts, better weight gain, while the losses in the control group were mainly attributed to O. radiatum parasite.
VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS
(2021)
Article
Veterinary Sciences
Hornblenda Joaquina Silva Bello, Jose Gabriel Goncalves Lins, Ana Claudia Alexandre de Albuquerque, Gabriel Badial Ferreira, Monica Regina Vendrame Amarante, Alessandro Francisco Talamini do Amarante
Summary: This study evaluated the prophylactic and therapeutic effects of ivermectin and closantel on sheep with O. ovis infestation. The results showed that both antiparasitics had high efficacy against oestrosis, and O. ovis parasitism did not hinder the performance of lambs.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Veterinary Sciences
Jordana Andrioli Salgado, Sthefany Kamile dos Santos, Jessea de Fatima Franca Biz, Matheus Borges de Carvalho, Fernanda Rigo, Breno Castello Branco Beirao, Alessandro Francisco Talamini do Amarante, Leandro Batista Costa, Cristina Santos Sotomaior
Summary: This study evaluated the levels of IgA in saliva, serum, and abomasal mucus in lambs infected with Haemonchus contortus. The results showed that IgA in saliva was correlated with the severity of infection and may serve as an immune correlate of protection against Haemonchus infection.
RESEARCH IN VETERINARY SCIENCE
(2022)
Article
Parasitology
Poliana Araujo Pacheco, Helder Louvandini, Rodrigo Giglioti, Bruna Costa Rodrigues Wedy, Jessica Carolina Ribeiro, Cecilia Jose Verissimo, Jorge Freire da Silva Ferreira, Alessandro Francisco Talamini do Amarante, Luciana Morita Katiki
Summary: This study evaluated the anthelmintic activity of ivermectin combined with main terpenes of essential oils and phenolic compounds against the most important gastrointestinal nematode in small ruminant systems. The combination of ivermectin with limonene or quercetin was found to restore the anthelmintic effects against multi-drug-resistant nematodes.
VETERINARY PARASITOLOGY
(2022)
Article
Parasitology
Jose Gabriel G. Lins, Fabiana A. Almeida, Ana Claudia A. Albuquerque, Collette Britton, Alessandro F. T. Amarante
Summary: In comparison with European sheep breeds, Santa Ines sheep show greater resistance against Haemonchus contortus infections. This study found that Santa Ines lambs are able to mount a robust innate immune response at an early age and exhibit strong resistance against H. contortus infection.
VETERINARY PARASITOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Murilo Antonio Fernandes, Paulo de Mello Tavares Lima, Alessandro Francisco Talamini do Amarante, Adibe Luiz Abdalla, Helder Louvandini
Summary: The study aimed to evaluate the effects of dual parasite infection on ruminal fermentation and methane production, as well as hematological and biochemical parameters in sheep. The results showed that parasitic infection reduced dry matter intake, caused changes in blood parameters and ruminal fermentation patterns, and resulted in higher methane production by infected animals.
SMALL RUMINANT RESEARCH
(2022)
Article
Parasitology
Hornblenda Joaquina Silva Bello, Jose Gabriel Gonsalves Lins, Naiara Mirelly Marinho da Silva, Ana Claudia Alexandre de Albuquerque, Monica Regina Vendrame Amarante, Vitoldo Antonio Kozlowski Neto, Alessandro F. T. Amarante
Summary: This study assessed the suitability of PCR and ELISA as diagnostic methods for identifying Oestrus ovis larvae in naturally infested young sheep. The results showed that ELISA was more effective than PCR in identifying animals carrying O. ovis.
VETERINARY PARASITOLOGY
(2022)
Article
Veterinary Sciences
Ana Claudia A. Albuquerque, Fabiana A. Almeida, Cesar C. Bassetto, Alessandro F. T. Amarante
Summary: Limited information on the effects of targeted selective treatment (TST) on livestock productivity exists. This study aimed to evaluate the production performance of lambs naturally infected with gastrointestinal nematodes (GIN) under TST compared to suppressive anthelmintic treatments.
VETERINARY RESEARCH COMMUNICATIONS
(2023)
Article
Parasitology
Simone Cristina Meo Niciura, Alessandro Pelegrine Minho, Jennifer McIntyre, Magda Vieira Benavides, Cintia Hiromi Okino, Sergio Novita Esteves, Ana Carolina de Souza Chagas, Alessandro Francisco Talamini do Amarante
Summary: This study optimized a 42-day in vitro culture protocol for Haemonchus contortus third-stage larvae using modified DMEM media. The acidic media and co-culture with Caco-2 cells were found to be more effective in promoting larvae development and viability compared to pH 7.4 DMEM.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2023)
Article
Biochemistry & Molecular Biology
Vitoldo Antonio Kozlowski Neto, Elizabeth Moreira dos Santos Schmidt, Camila Peres Rubio, Naiara Mirelly Marinho da Silva, Renata Tardivo, Ciniro Costa, Paulo Roberto de Lima Meirelles, Jose Joaquin Ceron, Asta Tvarijonaviciute, Alessandro Francisco Talamini do Amarante
Summary: The trial aimed to evaluate the levels of oxidative stress biomarkers and biochemical analytes in crossbred lambs during the rearing phase in an integrated crop-livestock system (ICLS) for controlling gastrointestinal parasites. 36 crossbred lambs were divided into two groups, with one group supplemented with whole cottonseed (WCS) and the other serving as controls. The results showed that the inclusion of WCS was beneficial in controlling infection and increasing antioxidants while reducing oxidants in lambs naturally infected by gastrointestinal parasites. The combination of WCS and ICLS could effectively control gastrointestinal parasite infection without affecting production performance.
Article
Parasitology
Jose Gabriel Goncalves Lins, Ana Claudia Alexandre de Albuquerque, Fabiana Alves de Almeida, Collette Britton, Camila Malossi, Joao Pessoa de Araujo Junior, Helder Louvandini, Alessandro F. T. Amarante
Summary: This study sequenced the RNA of abomasal tissue in Santa Ines (SI) and Ile de France (IF) lambs to identify mucosa-specific transcript alterations related to Haemonchus contortus infection. SI lambs showed a stronger immune response and had higher levels of certain cell types associated with resistance to infection. Potential mechanisms and markers for H. contortus resistance were identified in this study.
INTERNATIONAL JOURNAL FOR PARASITOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
M. L. E. Chocobar, H. J. S. Bello, C. C. Bassetto, N. M. Silva-Marinho, L. M. N. Sato, C. Sperb, A. C. S. Chagas, A. F. T. Amarante
Summary: The aim of this study was to evaluate the behavior of a susceptible Haemonchus contortus isolate in comparison with a multiresistant field isolate in infecting lambs. The results showed that the susceptible isolate was able to infect lambs with similar pathogenicity to the resistant field isolate, indicating its potential to replace the resistant population.
SMALL RUMINANT RESEARCH
(2023)
Article
Parasitology
Patrizia Ana Bricarello, Leticia Rodrigues Costa, Cibele Longo, Jaqueline Seugling, Cesar Cristiano Basseto, Alessandro Francisco Talamini do Amarante, Maria Jose Hotzel
Summary: This study evaluated the relationship between foraging distance, parasitological and physiological factors in Crioula Lanada lambs. The results showed that animals approached the dung more frequently when radiation and temperature were higher. Paddock entry/exit, IgG and infective larvae quantity influenced the foraging distance over time. On the other hand, infective larvae quantity was influenced by infection level, fecal egg count, and corpuscular volume.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2022)
Article
Parasitology
A. C. A. Albuquerque, F. A. Almeida, C. C. Bassetto, J. G. G. Lins, A. F. T. Amarante
Summary: This study evaluated the immune response to natural intestinal nematode infection in Santa Ines and Ile de France sheep breeds under two different anthelmintic treatment regimens. The results showed that Santa Ines lambs had higher levels of parasite-specific immunoglobulin G and A, as well as more mast cells and globule leukocytes in the intestinal mucosa. Furthermore, there were breed differences in the immune response to intestinal nematode infection.
JOURNAL OF HELMINTHOLOGY
(2022)
Article
Parasitology
Tairon Pannunzio Dias-Silva, Helder Louvandini, Alessandro Francisco Talamini do Amarante
Summary: This review outlines the negative effects of Trichostrongylus colubriformis infection on sheep phosphorus metabolism and the advantages of precision feeding as a potential strategy to mitigate loss. It emphasizes the importance of animal genetics information, feeding type, and grazing management in controlling feed intake and manure quality. The adoption of precision feeding can lead to more economically, socially, and environmentally sustainable sheep production.
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2021)