National dairy production is characterized by significant heterogeneity in production techniques and herd and farmer profiles. Our objective was to characterize 18 dairy farms under family farming in Senador Guiomard, Acre State, from January to December 2019. Data were gathered through 255 question semi-structured forms applied to farmers in monthly visits. The data were then stored in Excel® spreadsheets and subjected to descriptive statistics. A joint analysis showed the following characteristics: farmers with low schooling level (89%); farmers of advanced age (61%); nonadoption of good dairy practices (100%); inadequate milk transport (72%); adequate brucellosis vaccination (100%); non specialized herds (40%); pasture production system (100%); low productivity per area (873 L/ha/year) and per cow (4.0 liters/cow/day); low number of lactating cows (53%); and gross milk income (29,466.65 R$/year) representing 69% of the total gross income. The region studied has positive factors such as market guarantees, proximity to large market centers, reasonable land prices, suitable climate, ease of credit, rural education, and technical assistance. Overall, the farms are managed under a traditional production system, with low use of technology and unsatisfactory zootechnical indexes. However, the region has favorable conditions for dairy farming development.
{"title":"Characterization of dairy farms in a family-farm system in the municipality of Senador Guiomard, Acre State, Western Amazon","authors":"Luane Pereira Linhares, Eduardo Mitke Brandão Reis, Marcos Aurélio Lopes, Camilla Birenbaum Nobile, Antonia Valcemira Domingos de Oliveira","doi":"10.11606/issn.1678-4456.bjvras.2023.202942","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.202942","url":null,"abstract":"National dairy production is characterized by significant heterogeneity in production techniques and herd and farmer profiles. Our objective was to characterize 18 dairy farms under family farming in Senador Guiomard, Acre State, from January to December 2019. Data were gathered through 255 question semi-structured forms applied to farmers in monthly visits. The data were then stored in Excel® spreadsheets and subjected to descriptive statistics. A joint analysis showed the following characteristics: farmers with low schooling level (89%); farmers of advanced age (61%); nonadoption of good dairy practices (100%); inadequate milk transport (72%); adequate brucellosis vaccination (100%); non specialized herds (40%); pasture production system (100%); low productivity per area (873 L/ha/year) and per cow (4.0 liters/cow/day); low number of lactating cows (53%); and gross milk income (29,466.65 R$/year) representing 69% of the total gross income. The region studied has positive factors such as market guarantees, proximity to large market centers, reasonable land prices, suitable climate, ease of credit, rural education, and technical assistance. Overall, the farms are managed under a traditional production system, with low use of technology and unsatisfactory zootechnical indexes. However, the region has favorable conditions for dairy farming development.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135203928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-21DOI: 10.11606/issn.1678-4456.bjvras.2023.204539
Jamili Maria Suhet Mussi, G. C. Tavares, E. L. S. Santos, Lucas de Oliveira Ferreira, Damiana Alves de Almeida Rangel, E. Dorneles, M. Gonçalves, A. F. Fonseca Júnior, P. M. Soares Filho, Patrícia Gomes de Souza, M. Souza, A. P. Lage
This study aimed to evaluate methods for studying the in vitro antimicrobial activity of lactic acid bacteria (LAB) against Brucella abortus and to evaluate the antagonistic effect of LAB on the viability of this pathogen. A total of 18 LAB strains (Lactobacillus plantarum, n = 11; Pediococcus acidilactici, n = 1; Lactobacillus rhamnosus, n = 4; and Lactobacillus brevis, n = 2), isolated from Minas artisanal cheeses produced in three regions (Canastra, Campos das Vertentes, and Araxá) of Minas Gerais State, Brazil, were tested for their antimicrobial activity against B. abortus using three methods: spot-on-lawn, agar well diffusion assay, and antagonistic activity of the culture supernatants. None of the tested LAB strains could inhibit B. abortus in the spot-on-lawn and agar-well diffusion assays. The supernatants produced by LAB had an acidic pH, with intensity depending on bacterial growth and strain, and could inhibit the growth of B. abortus. In contrast, pH-neutralized (pH 7.0) LAB supernatants did not suppress the growth of B. abortus. The results showed that the best technique to study the in vitro antagonism of LAB against B. abortus was the antagonistic activity of culture supernatants. The growth of B. abortus may have been inhibited by acid production.
本研究旨在评价乳酸菌（LAB）对流产布鲁氏菌体外抗菌活性的研究方法，并评价乳酸菌对该病原体生存能力的拮抗作用。从巴西米纳斯吉拉斯州三个地区（Canastra、Campos das Vertentes和Araxá，琼脂孔扩散测定法和培养上清液的拮抗活性。在草坪上的斑点和琼脂孔扩散试验中，没有一个测试的LAB菌株能够抑制流产B.abortus。LAB产生的上清液具有酸性pH，其强度取决于细菌的生长和菌株，并且可以抑制流产B.abortus的生长。相反，pH中和（pH 7.0）的LAB上清液没有抑制流产B.abortus的生长。结果表明，研究LAB对流产双歧杆菌体外拮抗作用的最佳方法是培养上清液的拮抗活性。产酸可能抑制了流产B.abortus的生长。
{"title":"Antagonistic activity of lactic acid bacteria isolated from Minas artisanal cheeses against Brucella abortus","authors":"Jamili Maria Suhet Mussi, G. C. Tavares, E. L. S. Santos, Lucas de Oliveira Ferreira, Damiana Alves de Almeida Rangel, E. Dorneles, M. Gonçalves, A. F. Fonseca Júnior, P. M. Soares Filho, Patrícia Gomes de Souza, M. Souza, A. P. Lage","doi":"10.11606/issn.1678-4456.bjvras.2023.204539","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.204539","url":null,"abstract":"This study aimed to evaluate methods for studying the in vitro antimicrobial activity of lactic acid bacteria (LAB) against Brucella abortus and to evaluate the antagonistic effect of LAB on the viability of this pathogen. A total of 18 LAB strains (Lactobacillus plantarum, n = 11; Pediococcus acidilactici, n = 1; Lactobacillus rhamnosus, n = 4; and Lactobacillus brevis, n = 2), isolated from Minas artisanal cheeses produced in three regions (Canastra, Campos das Vertentes, and Araxá) of Minas Gerais State, Brazil, were tested for their antimicrobial activity against B. abortus using three methods: spot-on-lawn, agar well diffusion assay, and antagonistic activity of the culture supernatants. None of the tested LAB strains could inhibit B. abortus in the spot-on-lawn and agar-well diffusion assays. The supernatants produced by LAB had an acidic pH, with intensity depending on bacterial growth and strain, and could inhibit the growth of B. abortus. In contrast, pH-neutralized (pH 7.0) LAB supernatants did not suppress the growth of B. abortus. The results showed that the best technique to study the in vitro antagonism of LAB against B. abortus was the antagonistic activity of culture supernatants. The growth of B. abortus may have been inhibited by acid production.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43690540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-21DOI: 10.11606/issn.1678-4456.bjvras.2023.203984
Tallison Filipe Lima de Oliveira, T. I. B. D. Silva, V. Ribeiro, Girclyhanne da Costa Costa, Jhonatan Henrique Lima da Rocha, Marcos Bruno Zacarias Campelo, B. Nascimento, Sandra Albuquerque Lima Ribeiro
Wild animals can be natural reservoirs of different microorganisms, essential for monitoring these pathogens for the generation of knowledge and creation of tools aimed at programs for the prevention and control of infectious diseases, including zoonoses. The objective was to report the fungal diversity in the skin of pacas in captivity in Acre, Western Amazon, Brazil. Twenty-six animals were evaluated, from which skin samples were collected by superficial scraping, hair avulsion, and sterile plastic brush. The samples were seeded on Mycosel agar, and the phenotypic characteristics of the colonies were analyzed. In 80.8% of the samples, different fungi were isolated, from the genera Candida, Microsporum, and Trichophyton, among others. This is the first description of the identification of fungi in the skin of pacas and suggests that these animals can be considered essential reservoirs of saprophytic or pathogenic microorganisms with zoonotic potential in the Western Amazon.
{"title":"The role of pacas of captivity as a potential reservoir of zoonotic fungi in Acre, Western Amazon, Brazil","authors":"Tallison Filipe Lima de Oliveira, T. I. B. D. Silva, V. Ribeiro, Girclyhanne da Costa Costa, Jhonatan Henrique Lima da Rocha, Marcos Bruno Zacarias Campelo, B. Nascimento, Sandra Albuquerque Lima Ribeiro","doi":"10.11606/issn.1678-4456.bjvras.2023.203984","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.203984","url":null,"abstract":"Wild animals can be natural reservoirs of different microorganisms, essential for monitoring these pathogens for the generation of knowledge and creation of tools aimed at programs for the prevention and control of infectious diseases, including zoonoses. The objective was to report the fungal diversity in the skin of pacas in captivity in Acre, Western Amazon, Brazil. Twenty-six animals were evaluated, from which skin samples were collected by superficial scraping, hair avulsion, and sterile plastic brush. The samples were seeded on Mycosel agar, and the phenotypic characteristics of the colonies were analyzed. In 80.8% of the samples, different fungi were isolated, from the genera Candida, Microsporum, and Trichophyton, among others. This is the first description of the identification of fungi in the skin of pacas and suggests that these animals can be considered essential reservoirs of saprophytic or pathogenic microorganisms with zoonotic potential in the Western Amazon.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48308561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-03DOI: 10.11606/issn.1678-4456.bjvras.2023.200761
Thais Fernandes Batista, Adriana Cortez, M. Labruna, Daniel Pedro Barbosa Nascimento, R. Lopes, Jonas Moraes Filho
As hemoparasitoses em cães podem ser causadas por diversos agentes, sendo essas doenças transmitidas por artrópodes hematófagos. Esses agentes podem causar diversas manifestações clínicas e, em alguns casos, podem matar o hospedeiro. Este estudo teve como objetivo detectar por PCR em tempo real a frequência de Ehrlichia canis, Rickettsia rickettsii, Anaplasma platys, Rangelia vitalii e Babesia canis vogeli em amostras de cães da zona sul da cidade de São Paulo, Brasil. Das 98 amostras de cães, 18 (18,4%) testaram positivo com reação em cadeia da polimerase em tempo real para pelo menos um agente estudado. Destas 18 amostras, 17 testaram positivo para um único agente (11,2% para B. canis vogeli, 1,02% para R. vitalii e 5,1% para E. canis), e uma apresentou coinfecção com B. canis vogeli e R. vitalii. Os resultados demonstram a presença de hemoparasitas nos animais estudados, o que pode influenciar a qualidade e a expectativa de vida desses animais. Além disso, é o primeiro relato da detecção de R. vitalli na zona sul de São Paulo e serve de alerta para os clínicos de pequenos animais incluírem esse agente como diagnóstico diferencial para as hemoparasitoses.
{"title":"Cães naturalmente infectados por Rangelia vitalii, Babesia canis vogeli, e Ehrlichia canis em São Paulo, Brasil","authors":"Thais Fernandes Batista, Adriana Cortez, M. Labruna, Daniel Pedro Barbosa Nascimento, R. Lopes, Jonas Moraes Filho","doi":"10.11606/issn.1678-4456.bjvras.2023.200761","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.200761","url":null,"abstract":"As hemoparasitoses em cães podem ser causadas por diversos agentes, sendo essas doenças transmitidas por artrópodes hematófagos. Esses agentes podem causar diversas manifestações clínicas e, em alguns casos, podem matar o hospedeiro. Este estudo teve como objetivo detectar por PCR em tempo real a frequência de Ehrlichia canis, Rickettsia rickettsii, Anaplasma platys, Rangelia vitalii e Babesia canis vogeli em amostras de cães da zona sul da cidade de São Paulo, Brasil. Das 98 amostras de cães, 18 (18,4%) testaram positivo com reação em cadeia da polimerase em tempo real para pelo menos um agente estudado. Destas 18 amostras, 17 testaram positivo para um único agente (11,2% para B. canis vogeli, 1,02% para R. vitalii e 5,1% para E. canis), e uma apresentou coinfecção com B. canis vogeli e R. vitalii. Os resultados demonstram a presença de hemoparasitas nos animais estudados, o que pode influenciar a qualidade e a expectativa de vida desses animais. Além disso, é o primeiro relato da detecção de R. vitalli na zona sul de São Paulo e serve de alerta para os clínicos de pequenos animais incluírem esse agente como diagnóstico diferencial para as hemoparasitoses.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43525150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-06DOI: 10.11606/issn.1678-4456.bjvras.2023.205091
Lorean Pantaleon, A. Fukushima, N. Moreira, Leonardo Ribeiro De-Paula, G. Ribeiro, Juliana Weckx Peña-Muñoz, Beatriz do Prado Paca Faria, Marcelo Mendonça, G. R. Abreu, Júlia Zacarelli-Magalhães, Jan Carlos Bertassoni Delorenzi, Paula A. Faria Waziry, H. S. Spinosa, E. Ricci
The evaluation of animal locomotor activity is a behavioral tool widely used to measure the mechanisms underlying a particular disease, disorder, or injury, as well as the effects of exposure to a xenobiotic. The elevated beam test is one of the most used tests in rodents to assess balance and motor coordination. Despite being inexpensive and utilizing a simple apparatus, the high beam test requires a long period of animal training and habituation. The development and characterization of an alternative test, namely the gait test, has the potential to circumvent the time and effort required for animal training, deeming it an effective, inexpensive, and fast method for the analysis of behaviors that are comparably assessed by the high beam test. Therefore, the present study focused on determining the effectiveness and feasibility of the gait test for assessing rodent locomotion and balance as a replacement for the elevated beam test. For this purpose, male rats were divided into three groups: one control group exposed to a saline solution (NaCl 0.9%) and two experimental groups exposed to a single dose of either 0.2 or 1.0 mg/kg of ivermectin intraperitoneally for induction of locomotor disturbance. The high beam and gait tests were performed 15 min and 24 h after drug administration. Results show that the experimental groups had difficulty performing the tasks of either test at both time points analyzed compared to the control groups. At the high beam, experimental animals had trouble maintaining balance and walking. At the gait test, experimental animals showed alterations in gait, which were quantitated by: (a) shortening of step length, (b) decrease of stride, (c) altered step symmetry, and (d) altered stride area. Such results are indicative of compensatory efforts and were comparable between both tests. Altogether, the data indicate that the gait test meets all requirements for assessing motor coordination in rodents. The gait test is therefore validated as a complement to the elevated beam test for the study and analysis of neurodegenerative impairment and other disorders involving neuromuscular disturbances.
{"title":"Physiological gait test","authors":"Lorean Pantaleon, A. Fukushima, N. Moreira, Leonardo Ribeiro De-Paula, G. Ribeiro, Juliana Weckx Peña-Muñoz, Beatriz do Prado Paca Faria, Marcelo Mendonça, G. R. Abreu, Júlia Zacarelli-Magalhães, Jan Carlos Bertassoni Delorenzi, Paula A. Faria Waziry, H. S. Spinosa, E. Ricci","doi":"10.11606/issn.1678-4456.bjvras.2023.205091","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.205091","url":null,"abstract":"The evaluation of animal locomotor activity is a behavioral tool widely used to measure the mechanisms underlying a particular disease, disorder, or injury, as well as the effects of exposure to a xenobiotic. The elevated beam test is one of the most used tests in rodents to assess balance and motor coordination. Despite being inexpensive and utilizing a simple apparatus, the high beam test requires a long period of animal training and habituation. The development and characterization of an alternative test, namely the gait test, has the potential to circumvent the time and effort required for animal training, deeming it an effective, inexpensive, and fast method for the analysis of behaviors that are comparably assessed by the high beam test. Therefore, the present study focused on determining the effectiveness and feasibility of the gait test for assessing rodent locomotion and balance as a replacement for the elevated beam test. For this purpose, male rats were divided into three groups: one control group exposed to a saline solution (NaCl 0.9%) and two experimental groups exposed to a single dose of either 0.2 or 1.0 mg/kg of ivermectin intraperitoneally for induction of locomotor disturbance. The high beam and gait tests were performed 15 min and 24 h after drug administration. Results show that the experimental groups had difficulty performing the tasks of either test at both time points analyzed compared to the control groups. At the high beam, experimental animals had trouble maintaining balance and walking. At the gait test, experimental animals showed alterations in gait, which were quantitated by: (a) shortening of step length, (b) decrease of stride, (c) altered step symmetry, and (d) altered stride area. Such results are indicative of compensatory efforts and were comparable between both tests. Altogether, the data indicate that the gait test meets all requirements for assessing motor coordination in rodents. The gait test is therefore validated as a complement to the elevated beam test for the study and analysis of neurodegenerative impairment and other disorders involving neuromuscular disturbances. ","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49140901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-06DOI: 10.11606/issn.1678-4456.bjvras.2023.202442
L. C. Carneiro, J. Saut, M. O. Almeida, Sara Pedrosa Franco Barbosa, E. Williams, E. Celeghini
Fatty acids are considered metabolic intermediaries, although new facts indicate they also work as signaling molecules with different roles in the immune response. Based on that, in this study, we investigated the anti-inflammatory effects of n-3 polyunsaturated fatty acids (PUFAs) as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and α-linolenic acid (LNA) in ex vivo bovine endometrial explants. For this, two groups were formed: (1) LPS-challenged and (2) control, both to evaluate the accumulation of proinflammatory cytokines as interleukin 1β (IL1B) and interleukin 6 (IL6). To develop the study, bovine female reproductive tracts from non-pregnant Angus heifers without evidence of reproductive diseases were selected. Endometrial explants were processed and treated for 24 h with EPA, DHA, and LNA in five different concentrations (0μM, 50μM, 100 μM, 200μM and 400 μM) and then, challenged with LPS for 24 h. Supernatants were collected to evaluate the concentration of IL1B and IL6 by ELISA. Explants treated with EPA from control groups reduced the concentrations of ILB (200µM) and IL6 (400 µM), and IL6 (50 µM; 100 µM) from the LPS-challenged group. DHA decreased the accumulation of IL1B and IL6 at 200 µM on explants from the LPS-challenged group, and 200 µM reduced IL6 from the control group. In contrast, explants treated with LNA only reduced the accumulation of IL1B to 400μM (from both groups). In conclusion, the EPA acid is the best anti inflammatory option to decrease the concentration of both pro-inflammatory cytokines (IL1B and IL6) from LPS-challenged and control groups in bovine endometrial explants; while LNA evidence to be the last option to promote an anti-inflammatory response.
{"title":"The in vitro effects of n-3 fatty acids on immune response regulation of bovine ex vivo endometrial explants","authors":"L. C. Carneiro, J. Saut, M. O. Almeida, Sara Pedrosa Franco Barbosa, E. Williams, E. Celeghini","doi":"10.11606/issn.1678-4456.bjvras.2023.202442","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.202442","url":null,"abstract":"Fatty acids are considered metabolic intermediaries, although new facts indicate they also work as signaling molecules with different roles in the immune response. Based on that, in this study, we investigated the anti-inflammatory effects of n-3 polyunsaturated fatty acids (PUFAs) as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and α-linolenic acid (LNA) in ex vivo bovine endometrial explants. For this, two groups were formed: (1) LPS-challenged and (2) control, both to evaluate the accumulation of proinflammatory cytokines as interleukin 1β (IL1B) and interleukin 6 (IL6). To develop the study, bovine female reproductive tracts from non-pregnant Angus heifers without evidence of reproductive diseases were selected. Endometrial explants were processed and treated for 24 h with EPA, DHA, and LNA in five different concentrations (0μM, 50μM, 100 μM, 200μM and 400 μM) and then, challenged with LPS for 24 h. Supernatants were collected to evaluate the concentration of IL1B and IL6 by ELISA. Explants treated with EPA from control groups reduced the concentrations of ILB (200µM) and IL6 (400 µM), and IL6 (50 µM; 100 µM) from the LPS-challenged group. DHA decreased the accumulation of IL1B and IL6 at 200 µM on explants from the LPS-challenged group, and 200 µM reduced IL6 from the control group. In contrast, explants treated with LNA only reduced the accumulation of IL1B to 400μM (from both groups). In conclusion, the EPA acid is the best anti inflammatory option to decrease the concentration of both pro-inflammatory cytokines (IL1B and IL6) from LPS-challenged and control groups in bovine endometrial explants; while LNA evidence to be the last option to promote an anti-inflammatory response. ","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48542428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-15DOI: 10.11606/issn.1678-4456.bjvras.2023.199954
Andrezza Cavalcanti de Andrade, Érica Pereira da Silva, Joana D'Arc dos Santos, K. P. Oliveira, Karla Patrícia Chaves da Silva, M. K. Notomi
Fourteen female dogs diagnosed with pyometra were studied at three separate times: at diagnosis (T0) and 24 h (T1) and 10-15 days (T2) after ovariohysterectomy (OH). The means of the markers, symmetric dimethylarginine (SDMA) (17.71 to 26.54 μg/dL) and the urinary gamma-glutamyl transferase to creatinine ratio (uGGT/uCr) (1.06 to 2.62 U/mg), varied, showing an increase with time. Further, the elevation of gamma-glutamyl transferase (uGGT) (56.61 to 128.12 U/L) and the urinary protein to creatinine ratio (RPC) (0.26 to 1.24) was evident at T0 and T1. A reduction in the means of RPC, uGGT, and uGGT/uCr was observed 10-15 days after OH. Despite the elevation of these markers, the concentration of creatinine (1.11 to 1.40 mg/dL), urea (40.07 to 67.16 mg/dL), and urinary specific gravity (1.027 to 1.028) only presented slight variation. In canine pyometra, complications secondary to acute renal injury may be present that may be mild and transient in most treated animals. As elevation in SDMA and RPC preceded changes in creatinine levels for the evaluation of glomerular filtration, tubular markers could assist in the early identification of renal damage in canine pyometra.
{"title":"Evaluation of kidney injury through early markers in canine pyometra","authors":"Andrezza Cavalcanti de Andrade, Érica Pereira da Silva, Joana D'Arc dos Santos, K. P. Oliveira, Karla Patrícia Chaves da Silva, M. K. Notomi","doi":"10.11606/issn.1678-4456.bjvras.2023.199954","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.199954","url":null,"abstract":"Fourteen female dogs diagnosed with pyometra were studied at three separate times: at diagnosis (T0) and 24 h (T1) and 10-15 days (T2) after ovariohysterectomy (OH). The means of the markers, symmetric dimethylarginine (SDMA) (17.71 to 26.54 μg/dL) and the urinary gamma-glutamyl transferase to creatinine ratio (uGGT/uCr) (1.06 to 2.62 U/mg), varied, showing an increase with time. Further, the elevation of gamma-glutamyl transferase (uGGT) (56.61 to 128.12 U/L) and the urinary protein to creatinine ratio (RPC) (0.26 to 1.24) was evident at T0 and T1. A reduction in the means of RPC, uGGT, and uGGT/uCr was observed 10-15 days after OH. Despite the elevation of these markers, the concentration of creatinine (1.11 to 1.40 mg/dL), urea (40.07 to 67.16 mg/dL), and urinary specific gravity (1.027 to 1.028) only presented slight variation. In canine pyometra, complications secondary to acute renal injury may be present that may be mild and transient in most treated animals. As elevation in SDMA and RPC preceded changes in creatinine levels for the evaluation of glomerular filtration, tubular markers could assist in the early identification of renal damage in canine pyometra. ","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48255391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-18DOI: 10.11606/issn.1678-4456.bjvras.2023.203068
Milene de Paula Figueira, F. F. R. Silva, Alice Ribeiro, I. O. Silva, V. Boere
Environmental enrichment techniques include olfactory stimuli for improving animal welfare. This study aimed to analyze the reactions of 41 shelter dogs exposed to odorous stimuli, such as the method used in another study on wild canids. The focal animal method analyzed the dogs’ reactions, with all behaviors recorded. Behavioral responses were classified as positive (P+), negative (N-), or other (Ot). Independent variables were all dogs and the size of the packs. The behavior between the basal (without stimulus), exposure, and after-stimulus withdrawal was analyzed. For all dogs, olfactory stimuli significantly increased P+ (P=0.001) and N- (P=0.004), contrasting with the decrement of Ot behaviors (P=0.001) from the basal to the exposure phase. After the withdrawal of the stimuli, P+, N-, and Ot behaviors returned to basal levels (P>0.05). There were no significant differences (P>0.05) in the conduct of small or large packs exposed to stimuli. Dogs are sensitive to olfactory stimuli, but arousal is generalized to P+ and N-. It is undesirable to an N- increase for improvement of animal welfare. Contrary to what was observed in a study with wild canids, the method failed in shelter dogs because N- was increased. The introduction of sudden novelty (olfactory stimulus) in an impoverished shelter environment may have caused excitement in the dogs. It is suggested that changes in the method, such as stimuli exposition to each dog in an isolated room, are necessary to increase sheltered dog well-being.
{"title":"Olfactory stimulus as environmental enrichment for shelter dogs: a pilot study","authors":"Milene de Paula Figueira, F. F. R. Silva, Alice Ribeiro, I. O. Silva, V. Boere","doi":"10.11606/issn.1678-4456.bjvras.2023.203068","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.203068","url":null,"abstract":"Environmental enrichment techniques include olfactory stimuli for improving animal welfare. This study aimed to analyze the reactions of 41 shelter dogs exposed to odorous stimuli, such as the method used in another study on wild canids. The focal animal method analyzed the dogs’ reactions, with all behaviors recorded. Behavioral responses were classified as positive (P+), negative (N-), or other (Ot). Independent variables were all dogs and the size of the packs. The behavior between the basal (without stimulus), exposure, and after-stimulus withdrawal was analyzed. For all dogs, olfactory stimuli significantly increased P+ (P=0.001) and N- (P=0.004), contrasting with the decrement of Ot behaviors (P=0.001) from the basal to the exposure phase. After the withdrawal of the stimuli, P+, N-, and Ot behaviors returned to basal levels (P>0.05). There were no significant differences (P>0.05) in the conduct of small or large packs exposed to stimuli. Dogs are sensitive to olfactory stimuli, but arousal is generalized to P+ and N-. It is undesirable to an N- increase for improvement of animal welfare. Contrary to what was observed in a study with wild canids, the method failed in shelter dogs because N- was increased. The introduction of sudden novelty (olfactory stimulus) in an impoverished shelter environment may have caused excitement in the dogs. It is suggested that changes in the method, such as stimuli exposition to each dog in an isolated room, are necessary to increase sheltered dog well-being.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44225184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-20DOI: 10.11606/issn.1678-4456.bjvras.2023.198441
P. Rodrigues, Ana Claudia Silva Sampaio, É. P. Silva, I. Suffredini, E. Bondan, M. Bernardi, T. B. Kirsten
In mammals, ivermectin acts as a GABAA receptor agonist and stimulates GABA release. Previous studies showed that ivermectin (IVM) reduces sexual performance, impairing the latency to the first mount and intromission. These parameters are usually considered motivational parameters of sexual behavior. However, IVM increases GABAergic activity leading to motor incoordination. Thus, it is reasonable to propose that IVM affects sexual performance via motor incoordination pathways. The present study analyzed ultrasonic vocalization in rats to verify whether IVM impairs sexual behavior via motivational mechanisms or motor impairment. Because sexual experience attenuates the impairment of motor performance, rats with sexual experience were also studied. Sexually naive and experienced rats were administered a therapeutic IVM dose and saline. The rats were exposed to receptive females, and the latency to the first mount was evaluated, followed by the 50-kHz USV test. IVM treatment in naïve rats increased the latency to first to mount relative to Saline naïve rats, while no differences were observed between saline and experienced rats. In naïve-IVM rats, a reduced frequency and total calls and increased mean time of calls occur relative to SAL-naïve rats. Experienced IVM rats did not show differences in the frequency, mean, and maximal calls close to Saline experienced rats. However, an increase in the total calls and the dominant frequency of calls were observed in IVM-experienced rats compared to Saline experienced rats. A negative and positive correlation occurred between the latency to the first mount and USVs in groups with and without ivermectin exposure. Hence, we propose that ivermectin increased the sexual motivation of rats exposed to a female in estrous based in USVs despite an increased latency to the first mount that occurred. The increased latency to the first mount resulted from motor incoordination, as previously observed and proposed by our group.
{"title":"Sexual motivation and performance in sexual naïve and experienced rats treated with ivermectin: an ultrasonic vocalization study","authors":"P. Rodrigues, Ana Claudia Silva Sampaio, É. P. Silva, I. Suffredini, E. Bondan, M. Bernardi, T. B. Kirsten","doi":"10.11606/issn.1678-4456.bjvras.2023.198441","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.198441","url":null,"abstract":"In mammals, ivermectin acts as a GABAA receptor agonist and stimulates GABA release. Previous studies showed that ivermectin (IVM) reduces sexual performance, impairing the latency to the first mount and intromission. These parameters are usually considered motivational parameters of sexual behavior. However, IVM increases GABAergic activity leading to motor incoordination. Thus, it is reasonable to propose that IVM affects sexual performance via motor incoordination pathways. The present study analyzed ultrasonic vocalization in rats to verify whether IVM impairs sexual behavior via motivational mechanisms or motor impairment. Because sexual experience attenuates the impairment of motor performance, rats with sexual experience were also studied. Sexually naive and experienced rats were administered a therapeutic IVM dose and saline. The rats were exposed to receptive females, and the latency to the first mount was evaluated, followed by the 50-kHz USV test. IVM treatment in naïve rats increased the latency to first to mount relative to Saline naïve rats, while no differences were observed between saline and experienced rats. In naïve-IVM rats, a reduced frequency and total calls and increased mean time of calls occur relative to SAL-naïve rats. Experienced IVM rats did not show differences in the frequency, mean, and maximal calls close to Saline experienced rats. However, an increase in the total calls and the dominant frequency of calls were observed in IVM-experienced rats compared to Saline experienced rats. A negative and positive correlation occurred between the latency to the first mount and USVs in groups with and without ivermectin exposure. Hence, we propose that ivermectin increased the sexual motivation of rats exposed to a female in estrous based in USVs despite an increased latency to the first mount that occurred. The increased latency to the first mount resulted from motor incoordination, as previously observed and proposed by our group.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47906902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-20DOI: 10.11606/issn.1678-4456.bjvras.2023.201873
Komal Khan, H. Zaneb, S. Masood, S. Ashraf, M. M. Usman, Hafiz Faseehur-Rehman, Habibur Rehman
This study evaluated the protective efficacy of probiotics supplementation against cigarette smoke-induced lung emphysema, inflammation, and loss of cilia in mice. Probiotics are known to promote mucosal tolerance and mitigate respiratory injuries. Twenty-four adult mice were randomly divided into three groups: control (Ctr), cigarette smoke (CS), and cigarette smoke + probiotics (CS+P). Probiotics were given for 7 days before exposure to smoke in the CS+P group. Tissue samples of the trachea (goblet cell count and index, loss of cilia), lungs (airspace distention), and bronchoalveolar lavage fluid (BALF) were collected and processed. The results showed a significant increase in acidic and neutral goblet cells in the CS group compared to the Ctr and CS+P groups (P < 0.05). Overall, goblet cell number and index were lower in the CS+P group (41.71 ± 5.76, 0.67 ± 0.073) than CS group (56.28 ± 5.34, 1.31 ± 0.28). Inflammatory cells and loss of cilia significantly decreased in mice fed probiotics before exposure to cigarette smoke (P < 0.05). Lung emphysema was also significantly reduced in the CS+P group compared to the CS group (P < 0.05). In conclusion, dietary supplementation of probiotics reduced lung emphysema, inflammatory cells, goblet cell index, and loss of cilia under conditions of cigarette smoke exposure in mice.
{"title":"Probiotics supplementation reduces cigarette smoke-induced damage in the respiratory micro-architecture of mice","authors":"Komal Khan, H. Zaneb, S. Masood, S. Ashraf, M. M. Usman, Hafiz Faseehur-Rehman, Habibur Rehman","doi":"10.11606/issn.1678-4456.bjvras.2023.201873","DOIUrl":"https://doi.org/10.11606/issn.1678-4456.bjvras.2023.201873","url":null,"abstract":"This study evaluated the protective efficacy of probiotics supplementation against cigarette smoke-induced lung emphysema, inflammation, and loss of cilia in mice. Probiotics are known to promote mucosal tolerance and mitigate respiratory injuries. Twenty-four adult mice were randomly divided into three groups: control (Ctr), cigarette smoke (CS), and cigarette smoke + probiotics (CS+P). Probiotics were given for 7 days before exposure to smoke in the CS+P group. Tissue samples of the trachea (goblet cell count and index, loss of cilia), lungs (airspace distention), and bronchoalveolar lavage fluid (BALF) were collected and processed. The results showed a significant increase in acidic and neutral goblet cells in the CS group compared to the Ctr and CS+P groups (P < 0.05). Overall, goblet cell number and index were lower in the CS+P group (41.71 ± 5.76, 0.67 ± 0.073) than CS group (56.28 ± 5.34, 1.31 ± 0.28). Inflammatory cells and loss of cilia significantly decreased in mice fed probiotics before exposure to cigarette smoke (P < 0.05). Lung emphysema was also significantly reduced in the CS+P group compared to the CS group (P < 0.05). In conclusion, dietary supplementation of probiotics reduced lung emphysema, inflammatory cells, goblet cell index, and loss of cilia under conditions of cigarette smoke exposure in mice.","PeriodicalId":9119,"journal":{"name":"Brazilian Journal of Veterinary Research and Animal Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44320559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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