Effects of vaccination against brucellosis and clostridia on the intake,performance, feeding behavior,blood parameters,and immune responses of dairy heifers calves     

Hilton C Diniz Neto  Mayara C Lombardi  Mariana M Campos  Andrey P Lage  Rodrigo O S Silva  Elaine Maria Seles Dorneles  Camila Flvia A Lage  Wanessa A Carvalho  Fernanda S Machado  Luiz Gustavo R Pereira  Thierry R Tomich  Carolina P Ramos  Ronnie A Assis  Francisco Carlos F Lobato  Jordana A Santana  Ethiene Luiza S Santos  Rafaella S Andrade  Sandra G Coelho 《Journal of animal science》2021,99(5)

The aim of this study was to identify possible effects of different vaccination strategies (concomitantly or not) against brucellosis and clostridia on intake, performance, feeding behavior, blood parameters, and immune responses of dairy heifers calves. Fifty heifers calves were enrolled [38 Gyr (Zebu, Bos taurus indicus) and 12 5/8 Holstein Gyr]. At 120 d of age, animals were randomly distributed among 3 groups: B (n = 18), vaccinated against brucellosis; C (n = 14), vaccinated against clostridia and CB (n = 18), vaccinated concomitantly for both. Rectal and thermographic temperatures were evaluated on days 1, 0, 1, 2, 3, 5, 7,10, 14, and 28 relatives to the vaccination day. Feed and water intake, body weight (BW), and feeding behavior were monitored daily by an electronic feeding system. Blood was sampled on days 0, 3, 7, 14, and 28, relative to the vaccination day for determination of glucose and -hydroxybutyrate (BHBA) concentrations. Blood sampled on day 0 (prevaccination) and on days 28 and 42 were used to evaluate the immune response against Brucella abortus and clostridia. There was an increase in rectal temperature between the first and the third day postvaccination in the 3 groups. The thermography revealed an increase of local temperature for 7 d on groups B and CB. Group C had increased local temperature for a longer period, lasting for up to 14 d. Dry mater intake was reduced for groups B and CB, but no alteration was observed for group C. No alterations regarding initial BW, final BW, average daily weight gain, and feed efficiency were observed. No differences were observed for the 3 vaccination groups for blood parameters throughout the evaluation period. The concomitant vaccination against brucellosis and clostridia led to lower neutralizing antibody titers against epsilon toxin of Clostridium perfringens and botulinum toxin type C of C. botulinum (C > CB > B). When cellular proliferation assay and serological tests to B. abortus were evaluated, no differences were observed between groups B and CB. The present results indicate that the concomitant vaccination against brucellosis and clostridia has no relevant impact on the intake, performance, and feeding behavior of dairy calves. However, the concomitant vaccination of vaccines against these 2 pathogens impacts animal immunity against clostridial infections.  相似文献   

Differentially expressed genes identified through RNA‐seq with extreme values of principal components for beef fatty acid in Nelore cattle     

Bianca Ferreira Olivieri  Camila Urbano Braz  Fernando Brito Lopes  Elisa Peripolli  Rafael Medeiros de Oliveira Silva  Rosana Ruegger Pereira da Silva Corte  Lucia Galvo de Albuquerque  Anglica Simone Cravo Pereira  Nedenia Bonvino Stafuzza  Fernando Baldi 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2021,138(1):80-90

The aim of this study was to identify differentially expressed genes (DEG) in the Longissimus thoracis muscle of Nelore cattle related to fatty acid (FA) profile through RNA sequencing and principal component analysis (PCA). Two groups of 10 animals each were selected containing PC1 and PC2 extreme DEG values (HIGH × LOW) for each FA group. The intramuscular fat (IMF) was compared between cluster groups by ANOVA, and only the sum of monounsaturated FA (MUFA) and ω3 showed significant differences (p < .05). Interestingly, the highest percentage (95%) of phenotypic variation explained by the sum of the first two PC was observed for ω3, which also displayed the lowest number of DEG (n = 1). The lowest percentage (59%) was observed for MUFA, which also revealed the largest number of DEG (n = 66). Since only MUFA and ω3 exhibited significant differences between cluster groups, we can conclude that the differences observed for the remaining groups are not due to the percentage of IMF. Several genes that have been previously associated with meat quality and FA traits were identified as DEG in this study. The functional analysis revealed one KEGG pathway and eight GO terms as significant (p < .05), in which we highlighted the purine metabolism, glycolytic process, adenosine triphosphate binding and bone development. These results strongly contribute to the knowledge of the biological mechanisms involved in meat FA profile of Nelore cattle.  相似文献   

Causes of death in beef cattle in southern Brazil     

Francili A. Molossi  Bianca S. de Cecco  Camila B. Pohl  Rogrio B. Borges  Luciana Sonne  Saulo P. Pavarini  David Driemeier 《Journal of veterinary diagnostic investigation》2021,33(4):677

We determined the prevalence of diseases and pathogens associated with mortality in beef cattle in the State of Rio Grande do Sul, Brazil, based on pathology laboratory submissions. Postmortem examinations were conducted on 1,277 beef cattle that died between 2008 and 2018. Information regarding age, time of the year, breed, and regional location were analyzed statistically. Most cattle were from the surrounding region of Porto Alegre, and 78.7% of the analyzed cases had diagnostic value. The diagnostic category with most cases was infectious and/or parasitic diseases (60%), followed by toxic and toxicoinfectious (25%). Most cases occurred in the fall. Major disease conditions identified included hemoprotozoal infection (18.2%), rabies (8.2%), and plant intoxications by Senecio spp. (8.5%) and Pteridium arachnoideum (4.6%). Hemoprotozoal infection occurred at a higher frequency in young cattle, mainly in animals up to 1 y old. Intoxication by Senecio spp. was more frequent in cattle 2–3 y old.  相似文献   

Predation performance and survival of susceptible and pyrethroid-resistant Eriopis connexa Germar (Coleoptera: Coccinellidae) to insecticides used in brassica crops     

Rogério Lira  Deividy Vicente do Nascimento  Paulo Roberto Ramos Barbosa  Alvin M. Simmons  Jorge Braz Torres 《Pest management science》2023,79(8):2704-2712

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The development of the normal Schirmer tear test results during the dog's first year of life     

Manuella Oliveira Borges de Sampaio  Bret A. Moore  Nathália Mendonça de Seabra  Mariza Bortolini  Thayane Cristina Vieira  Camilla Bolmann Martins  Ana Leticia Groszewicz de Souza  Camila Marinelli Martins  Fabiano Montiani-Ferreira 《Veterinary ophthalmology》2023,26(3):184-190

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Birefringence analysis of collagen supraorganization in cat corneas with tropical keratopathy     

Ana L. S. N. Tinasi  Camila P. B. Silveira  Cristiane S. Honsho  José L. Laus  Marcela Aldrovani 《Veterinary ophthalmology》2023,26(5):398-406

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Genotyping of Mycobacterium bovis by geographic location within Mexico   总被引：1，自引：0，他引：1  

Milián-Suazo F  Banda-Ruíz V  Ramírez-Casillas C  Arriaga-Díaz C 《Preventive veterinary medicine》2002,55(4):e129-264

The spacer oligonucleotide typing (spoligotyping) method was used to differentiate 62 Mycobacterium bovis isolates obtained from tissues with macroscopic lesions typical of tuberculosis in dairy cattle from different regions of Mexico. Our purpose was to see if a strain from one region was genetically different from those of other regions (with the long-term aim of doing molecular trace back of isolates obtained in the laboratory). Results from the genetic analysis indicate that M. bovis isolates cannot be grouped by geographic location due to a wide range of genetic types involved in dairy cattle infections. Isolates even from the same herd showed different spoligotypes but some isolates from different region had similar genetic patterns. Genetic typing without epidemiologic information does not seem to be a plausible method to trace back animals to source of origin to detect and eliminate sources of infection.  相似文献   

Empirical models to predict LAI and aboveground biomass of Coffea arabica under full sun and shaded plantation: a case study of South of Minas Gerais,Brazil     

Priscila Pereira Coltri  Jurandir Zullo Junior  Vincent Dubreuil  Glaucia Miranda Ramirez  Hilton Silveira Pinto  Gustavo Coral  Camila Giorgi Lazarim 《Agroforestry Systems》2015,89(4):621-636

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Prevalence and Prognostic Importance of Pulmonary Hypertension in Dogs with Myxomatous Mitral Valve Disease          下载免费PDF全文

M. Borgarelli  J. Abbott  L. Braz‐Ruivo  D. Chiavegato  S. Crosara  K. Lamb  I. Ljungvall  M. Poggi  R.A. Santilli  J. Haggstrom 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2015,29(2):569-574

Background

Pulmonary hypertension (PH) is common in dogs with myxomatous mitral valve disease (MMVD) but its effect on clinical outcome has not been investigated.

Hypothesis/objectives

The presence of PH worsens the outcome in dogs with MMVD. To compare survival times of dogs with MMVD and PH to those without PH.

Animals

Two hundred and twelve client‐owned dogs.

Methods

Case review study. Medical records of dogs diagnosed with ACVIM stage B2 and C MMVD between January 2010 and December 2011 were retrospectively reviewed. Long‐term outcome was determined by telephone interview or from the medical record. End of the observation period was March 2013. PH was identified if tricuspid regurgitation peak velocity was >3 m/s.

Results

Two hundred and twelve were identified. Eighty‐three dogs (39%) had PH. PH was more commonly identified in stage C compared to B2 (P < .0001). One hundred and five (49.5%) dogs died during the observation period. Median survival time for the entire study population was 567 days (95% CI 512–743). Stage C (P = .003), the presence of PH (P = .009), left atrial to aortic root ratio (LA/Ao) >1.7 (P = .0002), normalized left‐ventricular end‐diastolic diameter (LVEDn) >1.73 (P = .048), and tricuspid regurgitation pressure gradient (TRPG) >55 mmHg (P = .009) were associated with worse outcomes in the univariate analyses. The presence of TRPG >55 mmHg (HR 1.8 95% CI 1–2.9; P = .05) and LA/Ao > 1.7 (HR 2 95% CI 1.2–3.4; P = .01) remained significant predictors of worse outcome in the multivariate analysis.

Conclusions and Clinical Importance

In dogs with MMVD, moderate to severe PH worsens outcome.  相似文献   

The influence of the obstetrical condition on canine neonatal pulmonary functional competence          下载免费PDF全文

Liege Garcia Silva DVM  PhD  Guilherme Vannucchi Portari PhD  Cristina Fátima Lúcio DVM  PhD  Jaqueline Aguiar Rodrigues DVM  MSc  Gisele Lima Veiga DVM  PhD  Camila Infantosi Vannucchi DVM  PhD 《Journal of Veterinary Emergency and Critical Care》2015,25(6):725-730

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