L. Zulzke, M.B. Labruna, B.R.F. Silva, A. Marcili, T.F. Martins, J. Moraes-Filho
ABSTRACT This study evaluated by molecular methods the presence of major canine tick-borne agents in ticks infesting domestic dogs of a hospital population in a neglected area of the southern zone of the São Paulo Metropolitan region, which is characterized by an extensive urban area surrounded and interspersed by forest remnants of the original Atlantic rainforest. During 2017, 106 tick specimens - 71 adults and 33 nymphs of Rhipicephalus sanguineus sensu lato (s.l.), and two adults of Amblyomma aureolatum - were collected from 41 dogs that were attended in a Veterinary Teaching Hospital in São Paulo City, Brazil. By molecular analyses, 4.2% (3/71) of the R. sanguineus s.l. adult ticks contained the bacterium Rickettsia rickettsii, 2.8% (2/71) contained the bacterium Ehrlichia canis, and 4.2% (3/71) contained the protozoan Rangelia vitalii. These results indicate that domestic dogs of the southern zone of the São Paulo metropolitan region might be exposed to three of the major tick-borne agents affecting dogs in Brazil, R. rickettsii, E. canis and R. vitalii. In addition, the findings reinforce the circulation of the human pathogen R. rickettsii in the study area in a likely enzootic cycle involving dogs and R. sanguineus ticks.
{"title":"Molecular detection of Rickettsia rickettsii, Ehrlichia canis and Rangelia vitalli in Rhipicephalus sanguineus senso latu collected from dogs in Brazil","authors":"L. Zulzke, M.B. Labruna, B.R.F. Silva, A. Marcili, T.F. Martins, J. Moraes-Filho","doi":"10.1590/1678-4162-12864","DOIUrl":"https://doi.org/10.1590/1678-4162-12864","url":null,"abstract":"ABSTRACT This study evaluated by molecular methods the presence of major canine tick-borne agents in ticks infesting domestic dogs of a hospital population in a neglected area of the southern zone of the São Paulo Metropolitan region, which is characterized by an extensive urban area surrounded and interspersed by forest remnants of the original Atlantic rainforest. During 2017, 106 tick specimens - 71 adults and 33 nymphs of Rhipicephalus sanguineus sensu lato (s.l.), and two adults of Amblyomma aureolatum - were collected from 41 dogs that were attended in a Veterinary Teaching Hospital in São Paulo City, Brazil. By molecular analyses, 4.2% (3/71) of the R. sanguineus s.l. adult ticks contained the bacterium Rickettsia rickettsii, 2.8% (2/71) contained the bacterium Ehrlichia canis, and 4.2% (3/71) contained the protozoan Rangelia vitalii. These results indicate that domestic dogs of the southern zone of the São Paulo metropolitan region might be exposed to three of the major tick-borne agents affecting dogs in Brazil, R. rickettsii, E. canis and R. vitalii. In addition, the findings reinforce the circulation of the human pathogen R. rickettsii in the study area in a likely enzootic cycle involving dogs and R. sanguineus ticks.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Camacho-Ronquillo, E. Posadas-Manzano, F. Utrera-Quintana, J. Hernández-Hernández, J. Gallegos-Sánchez, J. Cruz-Aviña, A. Villa-Mancera
ABSTRACT Global advances in reproductive biotechnology have allowed for the transfer of embryos from donor females with high genetic merit to recipients using the cryopreservation technique, which preserves an embryo of excellent quality and viability, thereby achieving a feasible pregnancy rate. The objective of this study was to evaluate the quality and viability of Holstein embryos that have been cryopreserved for more than 40 years under glycerol freezing. The embryos were transferred to the recipient heifers using a non-surgical method. Two 17-month-old Holstein heifers (360 kg live weights) which were clinically healthy and reproductively active were used as the recipients. Two bovine embryos of Grade 1 quality were thawed and evaluated for their morphology. Of the two embryo transfers, one pregnancy was achieved, resulting in the birth of a calf. Therefore, embryos frozen in liquid nitrogen and glycerol as a cryopreservative for more than 40 years maintained their quality and viability to produce a live calf.
{"title":"Can bovine embryos be successfully transferred after 40 years of cryopreservation?","authors":"J. Camacho-Ronquillo, E. Posadas-Manzano, F. Utrera-Quintana, J. Hernández-Hernández, J. Gallegos-Sánchez, J. Cruz-Aviña, A. Villa-Mancera","doi":"10.1590/1678-4162-13035","DOIUrl":"https://doi.org/10.1590/1678-4162-13035","url":null,"abstract":"ABSTRACT Global advances in reproductive biotechnology have allowed for the transfer of embryos from donor females with high genetic merit to recipients using the cryopreservation technique, which preserves an embryo of excellent quality and viability, thereby achieving a feasible pregnancy rate. The objective of this study was to evaluate the quality and viability of Holstein embryos that have been cryopreserved for more than 40 years under glycerol freezing. The embryos were transferred to the recipient heifers using a non-surgical method. Two 17-month-old Holstein heifers (360 kg live weights) which were clinically healthy and reproductively active were used as the recipients. Two bovine embryos of Grade 1 quality were thawed and evaluated for their morphology. Of the two embryo transfers, one pregnancy was achieved, resulting in the birth of a calf. Therefore, embryos frozen in liquid nitrogen and glycerol as a cryopreservative for more than 40 years maintained their quality and viability to produce a live calf.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Al-Ghamdi, M. Ibrahim, E. Idris, A. Al-Doaiss, K. Morsy
ABSTRACT Cystic echinococcosis (CE) is a parasite-borne disease caused by the larval stage of Echinococcus granulosus belonging to family Taeniidae, is an endemic disease, distributed worldwide as a neglected parasite with socioeconomic repercussions. It causes severe alterations in liver of infected host, and it could be fatal if untreated. The main objective of the present study is to measure and evaluate the condition of hydatidosis in slaughtered sheep in Al Baha region, Saudi Arabia. A total of 601 slaughtered sheep in Al Baha abattoirs were examined for hydatidosis during the year 2020. Various organs were examined for the presence of parasite cysts, and the cyst contents were examined by light microscopy. Also, liver sections infected with cysts were examined for pathological alterations and host-parasite interactions. Forty-two animals were infected (6.09%) with the highest prevalence during summer. During gross examination, it was observed that the sheep liver is the most affected organ by the disease. The liver contained multiple cysts with varying sizes, filled with clear to slightly turbid fluid containing protoscoleces. Detailed sections of the infected liver revealed significant fibrosis around the central vein, portal vein congestion, infiltration of inflammatory cells, and necrosis. Sections through hydatid cysts showed the presence of three surrounding layers with a laminar membrane bordering the cyst lined by a germinal epithelium surrounding several brood capsules with many protoscolesces inside supported by a set of rostellar hooklets. Considerable efforts should be spent to control the transmission of parasitic cysts and inhibit the incorrect disposal of infected meat from slaughterhouses. Also, more focus should be done on epidemiological and control programs of these parasites.
{"title":"Morphological aspects and pathological impacts of cystic echinococcosis in liver of slaughtered sheep and host-parasite relationship","authors":"A. Al-Ghamdi, M. Ibrahim, E. Idris, A. Al-Doaiss, K. Morsy","doi":"10.1590/1678-4162-12975","DOIUrl":"https://doi.org/10.1590/1678-4162-12975","url":null,"abstract":"ABSTRACT Cystic echinococcosis (CE) is a parasite-borne disease caused by the larval stage of Echinococcus granulosus belonging to family Taeniidae, is an endemic disease, distributed worldwide as a neglected parasite with socioeconomic repercussions. It causes severe alterations in liver of infected host, and it could be fatal if untreated. The main objective of the present study is to measure and evaluate the condition of hydatidosis in slaughtered sheep in Al Baha region, Saudi Arabia. A total of 601 slaughtered sheep in Al Baha abattoirs were examined for hydatidosis during the year 2020. Various organs were examined for the presence of parasite cysts, and the cyst contents were examined by light microscopy. Also, liver sections infected with cysts were examined for pathological alterations and host-parasite interactions. Forty-two animals were infected (6.09%) with the highest prevalence during summer. During gross examination, it was observed that the sheep liver is the most affected organ by the disease. The liver contained multiple cysts with varying sizes, filled with clear to slightly turbid fluid containing protoscoleces. Detailed sections of the infected liver revealed significant fibrosis around the central vein, portal vein congestion, infiltration of inflammatory cells, and necrosis. Sections through hydatid cysts showed the presence of three surrounding layers with a laminar membrane bordering the cyst lined by a germinal epithelium surrounding several brood capsules with many protoscolesces inside supported by a set of rostellar hooklets. Considerable efforts should be spent to control the transmission of parasitic cysts and inhibit the incorrect disposal of infected meat from slaughterhouses. Also, more focus should be done on epidemiological and control programs of these parasites.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E.A. Cardoso, D.A. Furtado, N.L. Ribeiro, A.N. Medeiros, E.P. Saraiva, S. Gonzaga Neto, B.D.O. Fernandes, J.W. B. Nascimento
ABSTRACT The objective was to evaluate the effect of water salinity and environmental temperature on the nutrient consumption, digestibility, nitrogen balance, and mineral excretion of creole goats. Thirty-six males with an average age of 5.0±0.6 months and an average weight of 20.0±2.3kg were housed in metabolic cages. They are distributed in a completely randomized design, with a 2×3 type crossover (2 temperatures (T1 = 26±0.6ºC and T2 = 32±1.2ºC) and three levels of salinity (1.0, 6.0, and 12.0 dS m-1). The temperature influenced (P<0.05) the intake of water and ether (EE) extract, the digestibility of EE, organic matter and dry matter, and the concentrations of calcium and potassium in the urine of goats. There was no significant effect (P>0.05) of temperatures or water salinity levels; the animals consumed and retained averages of 10.31 and 4.19 g day-1 of nitrogen in the body, respectively. The different water salinity levels influenced (P<0.05) water intake and increased the excretions of potassium and sodium in urine. Total solids levels ranging from 640 to 9,600mg L-1 in water for goats increase water consumption, as does urine potassium and sodium excretion in urine.
摘要本试验旨在研究水盐度和环境温度对克里奥尔山羊营养物质消耗、消化率、氮平衡和矿物质排泄的影响。将36只平均年龄5.0±0.6月龄、平均体重20.0±2.3kg的雄鼠放入代谢笼。采用2×3型交叉(2种温度(T1 = 26±0.6ºC和T2 = 32±1.2ºC)和3种盐度(1.0、6.0和12.0 dS m-1)的完全随机设计。温度对山羊水和粗脂肪采食量、粗脂肪消化率、有机质和干物质消化率以及尿液中钙、钾浓度有显著影响(P<0.05)。温度和水盐度水平无显著影响(P>0.05);动物体内氮的平均消耗和留存量分别为10.31和4.19 g d -1。不同的水盐度水平影响了水的摄入量(P<0.05)，增加了尿中钾和钠的排泄量。山羊的水中总固体含量在640到9600毫克L-1之间，会增加水的消耗，尿中的钾和钠也会增加。
{"title":"Goats in a comfortable and stressed environment consuming saline water: performance, digestibility, nitrogen balance, and urinary mineral concentrations","authors":"E.A. Cardoso, D.A. Furtado, N.L. Ribeiro, A.N. Medeiros, E.P. Saraiva, S. Gonzaga Neto, B.D.O. Fernandes, J.W. B. Nascimento","doi":"10.1590/1678-4162-12804","DOIUrl":"https://doi.org/10.1590/1678-4162-12804","url":null,"abstract":"ABSTRACT The objective was to evaluate the effect of water salinity and environmental temperature on the nutrient consumption, digestibility, nitrogen balance, and mineral excretion of creole goats. Thirty-six males with an average age of 5.0±0.6 months and an average weight of 20.0±2.3kg were housed in metabolic cages. They are distributed in a completely randomized design, with a 2×3 type crossover (2 temperatures (T1 = 26±0.6ºC and T2 = 32±1.2ºC) and three levels of salinity (1.0, 6.0, and 12.0 dS m-1). The temperature influenced (P<0.05) the intake of water and ether (EE) extract, the digestibility of EE, organic matter and dry matter, and the concentrations of calcium and potassium in the urine of goats. There was no significant effect (P>0.05) of temperatures or water salinity levels; the animals consumed and retained averages of 10.31 and 4.19 g day-1 of nitrogen in the body, respectively. The different water salinity levels influenced (P<0.05) water intake and increased the excretions of potassium and sodium in urine. Total solids levels ranging from 640 to 9,600mg L-1 in water for goats increase water consumption, as does urine potassium and sodium excretion in urine.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A.P.A. Souza, R.V.S. Torres, C.J. Oliveira, F.W.S. Silva, F.A. Franco, C.O. Florence, U.C. G. Filho, C.A. Graça Orozco, J.P.M.S. Cabral
ABSTRACT Luxation of the temporomandibular joint (TMJ) in horses, despite being an uncommon condition, is often associated with local trauma involving the head. Its clinical importance is mainly related to the painful injury and impairment of the multiple movements involved in chewing and breaking foods. The objective of the current work is to describe the manual reduction technique of TMJ dislocation in a 6-year-old Mangalarga Marchador stallion with a history of inability to close the oral cavity and lateral displacement of the mandible. In the radiographic and ultrasonographic evaluation of the region a rostral displacement of the mandibular condyle was observed. Manual reduction was effective with the patient under dissociative anesthesia, progressing to medical discharge within 12 days.
{"title":"Reduction of temporomandibular joint (TMJ) luxation in a horse - case report","authors":"A.P.A. Souza, R.V.S. Torres, C.J. Oliveira, F.W.S. Silva, F.A. Franco, C.O. Florence, U.C. G. Filho, C.A. Graça Orozco, J.P.M.S. Cabral","doi":"10.1590/1678-4162-12985","DOIUrl":"https://doi.org/10.1590/1678-4162-12985","url":null,"abstract":"ABSTRACT Luxation of the temporomandibular joint (TMJ) in horses, despite being an uncommon condition, is often associated with local trauma involving the head. Its clinical importance is mainly related to the painful injury and impairment of the multiple movements involved in chewing and breaking foods. The objective of the current work is to describe the manual reduction technique of TMJ dislocation in a 6-year-old Mangalarga Marchador stallion with a history of inability to close the oral cavity and lateral displacement of the mandible. In the radiographic and ultrasonographic evaluation of the region a rostral displacement of the mandibular condyle was observed. Manual reduction was effective with the patient under dissociative anesthesia, progressing to medical discharge within 12 days.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Neumann, M.P. Machado, A.M. Souza, D.C. Plodoviski, A. Ostrensky, P.E.P. Oliveira, A. Passos Junior, P.V.P. Cesar, E.H. Horst
ABSTRACT Diets with high energy density and additives that enhance energy use are necessary for finishing feedlot cattle. The objective of the present study was to evaluate the performance, ingestive behavior, apparent digestibility of the diet and the carcass traits of feedlot steers fed concentrates from different energy sources, one derived from starchy sources and the other, from lipid sources, combined or not with whole soy lecithin, at a dose of 40 g animal day-1. The experimental design was completely randomized blocks, in a 2 x 2 factorial arrangement. The combination of whole soy lecithin with the lipid energy source concentrate increased the dry matter digestibility and the carcass yield of the animals (76.03% and 57.20%, respectively). The lipid energy source concentrate showed higher ether extract digestibility and animals fed on it had higher carcass yield (84.18% and 56.85%, respectively). Whole soy lecithin promoted a reduction in fecal pH due to a greater fermentation of carbohydrates and fatty acids in the intestinal lumen. Using whole soy lecithin combined with energy concentrate from a lipid source is recommended due to its improvements in the use of the diet and in the carcass yield.
{"title":"Use of whole soy lecithin in diets with energy concentrate from starchy or lipid sources for steers","authors":"M. Neumann, M.P. Machado, A.M. Souza, D.C. Plodoviski, A. Ostrensky, P.E.P. Oliveira, A. Passos Junior, P.V.P. Cesar, E.H. Horst","doi":"10.1590/1678-4162-12891","DOIUrl":"https://doi.org/10.1590/1678-4162-12891","url":null,"abstract":"ABSTRACT Diets with high energy density and additives that enhance energy use are necessary for finishing feedlot cattle. The objective of the present study was to evaluate the performance, ingestive behavior, apparent digestibility of the diet and the carcass traits of feedlot steers fed concentrates from different energy sources, one derived from starchy sources and the other, from lipid sources, combined or not with whole soy lecithin, at a dose of 40 g animal day-1. The experimental design was completely randomized blocks, in a 2 x 2 factorial arrangement. The combination of whole soy lecithin with the lipid energy source concentrate increased the dry matter digestibility and the carcass yield of the animals (76.03% and 57.20%, respectively). The lipid energy source concentrate showed higher ether extract digestibility and animals fed on it had higher carcass yield (84.18% and 56.85%, respectively). Whole soy lecithin promoted a reduction in fecal pH due to a greater fermentation of carbohydrates and fatty acids in the intestinal lumen. Using whole soy lecithin combined with energy concentrate from a lipid source is recommended due to its improvements in the use of the diet and in the carcass yield.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Although rarely reported in veterinary medicine, this article shows three cases of dogs that presented anaphylactic reactions after intravenous administration of meloxicam at therapeutic doses. Three dogs of different breeds and ages were submitted to anesthesia for surgical procedures of ovariohysterectomy and repair of patellar luxation. The animals were classified as ASA I and did not present changes in clinical and laboratory tests. All dogs were anesthetized and monitored by anesthesiologists, with careful multiparametric evaluation. Near the end of the procedures, meloxicam was administered intravenously in all dogs, and the drug used had the same commercial presentation and concentration, but with different lot numbers and with different months. For less than a minute, the animals showed significant hypotension, with pressure values close to 30 mmHg or inaudible by Doppler. The animals had no skin signs, only hypotension and a decrease in heart rate in one of them. All dogs were immediately treated with intravenous ephedrine and atropine in the bradycardic patient. After the emergency treatment, the dogs showed stabilized vital signs, with no complications or need for additional intervention. After the event, the three dogs showed no signs of clinical, behavioral or laboratory changes.
{"title":"Hypersensitivity reaction after intravenous administration of meloxicam in dogs - case report","authors":"S.L. Beier, M.P.A. Lima, R.A. Silva, O.H.R. Ladeira, E.H. Bitencourt, S.E.M.T. Branco, F.G. Sousa","doi":"10.1590/1678-4162-12961","DOIUrl":"https://doi.org/10.1590/1678-4162-12961","url":null,"abstract":"ABSTRACT Although rarely reported in veterinary medicine, this article shows three cases of dogs that presented anaphylactic reactions after intravenous administration of meloxicam at therapeutic doses. Three dogs of different breeds and ages were submitted to anesthesia for surgical procedures of ovariohysterectomy and repair of patellar luxation. The animals were classified as ASA I and did not present changes in clinical and laboratory tests. All dogs were anesthetized and monitored by anesthesiologists, with careful multiparametric evaluation. Near the end of the procedures, meloxicam was administered intravenously in all dogs, and the drug used had the same commercial presentation and concentration, but with different lot numbers and with different months. For less than a minute, the animals showed significant hypotension, with pressure values close to 30 mmHg or inaudible by Doppler. The animals had no skin signs, only hypotension and a decrease in heart rate in one of them. All dogs were immediately treated with intravenous ephedrine and atropine in the bradycardic patient. After the emergency treatment, the dogs showed stabilized vital signs, with no complications or need for additional intervention. After the event, the three dogs showed no signs of clinical, behavioral or laboratory changes.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V.N. Arsenoaia, R.O. Rusu, R.N. Malancus, C. Chiruta, L.I. Ailincai
ABSTRACT This study aimed to investigate the impact of pig breed on stress levels and meat quality in two commercial pig farms in the north-eastern part of Romania. One farm raised 52 Mangalita pure-bred pigs and the other 82 Duroc x Landrace crossbred pigs. Serum cortisol, a biomarker of stress, and serum glucose were measured before and after slaughtering, while meat pH was measured at 45 minutes and 24 hours post-mortem. Results showed that the Duroc x Landrace crossbred pigs had higher serum cortisol and glucose values before and after slaughtering compared to the Mangalita purebred pigs. The meat pH values of the two breeds were similar, with the pH45 and pH24 values being 6.67 and 5.48 for Duroc x Landrace crossbred and 6.53 and 5.52 for Mangalita purebred, respectively. These results suggest that pig breed can have an impact on stress levels and meat quality, with Duroc x Landrace crossbred pigs showing higher stress levels and meat quality being not affected by the breed of pig. Further research is needed to confirm these findings and to understand the underlying mechanisms.
{"title":"The impact of pig breed on stress levels and meat quality: a study on mangalita purebred and Duroc x Landrace crossbred pigs in Romania","authors":"V.N. Arsenoaia, R.O. Rusu, R.N. Malancus, C. Chiruta, L.I. Ailincai","doi":"10.1590/1678-4162-13001","DOIUrl":"https://doi.org/10.1590/1678-4162-13001","url":null,"abstract":"ABSTRACT This study aimed to investigate the impact of pig breed on stress levels and meat quality in two commercial pig farms in the north-eastern part of Romania. One farm raised 52 Mangalita pure-bred pigs and the other 82 Duroc x Landrace crossbred pigs. Serum cortisol, a biomarker of stress, and serum glucose were measured before and after slaughtering, while meat pH was measured at 45 minutes and 24 hours post-mortem. Results showed that the Duroc x Landrace crossbred pigs had higher serum cortisol and glucose values before and after slaughtering compared to the Mangalita purebred pigs. The meat pH values of the two breeds were similar, with the pH45 and pH24 values being 6.67 and 5.48 for Duroc x Landrace crossbred and 6.53 and 5.52 for Mangalita purebred, respectively. These results suggest that pig breed can have an impact on stress levels and meat quality, with Duroc x Landrace crossbred pigs showing higher stress levels and meat quality being not affected by the breed of pig. Further research is needed to confirm these findings and to understand the underlying mechanisms.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A.C. Queiroz, M. Milanesi, L.H. Queiroz, C.M. Nunes
ABSTRACT Brazilian chicken meat is exported to more than 150 countries and consumed by consumer markets that demand high quality and food safety, thus, requiring very strict control of pathogens present in food to guarantee these rigorous safety standards. This study evaluates the reports from the Salmonella spp. Control and Monitoring Program of the Brazilian Ministry of Agriculture, Livestock and Food Supply of seven slaughterhouses inspected by the Federal Inspection Service from the western region of Paraná state, Brazil, from March 2017 to February 2019. The broiler litter swab and carcass analyses revealed a Salmonella spp. positivity ratio of 5.9% (19/319) and 23.5% (75/319), respectively. The concomitant presence of Salmonella spp. in the broiler litter swab and chicken carcasses occurred in 58% of the positive samples. The most frequently isolated serovar in the carcasses was Salmonella Heidelberg (85.3%) followed by Salmonella spp. (10.6%). During slaughter, carcass positivity to Salmonella spp. was significantly different (p=0.047) between the first (19.6%) and the second (29.4%) shifts. The results alert for the possibility of carcass contamination during slaughtering and, therefore, more stringent hygiene measures between shifts must be implemented to mitigate carcass contamination.
{"title":"Occurrence of Salmonella spp. in the broiler production chain","authors":"A.C. Queiroz, M. Milanesi, L.H. Queiroz, C.M. Nunes","doi":"10.1590/1678-4162-12842","DOIUrl":"https://doi.org/10.1590/1678-4162-12842","url":null,"abstract":"ABSTRACT Brazilian chicken meat is exported to more than 150 countries and consumed by consumer markets that demand high quality and food safety, thus, requiring very strict control of pathogens present in food to guarantee these rigorous safety standards. This study evaluates the reports from the Salmonella spp. Control and Monitoring Program of the Brazilian Ministry of Agriculture, Livestock and Food Supply of seven slaughterhouses inspected by the Federal Inspection Service from the western region of Paraná state, Brazil, from March 2017 to February 2019. The broiler litter swab and carcass analyses revealed a Salmonella spp. positivity ratio of 5.9% (19/319) and 23.5% (75/319), respectively. The concomitant presence of Salmonella spp. in the broiler litter swab and chicken carcasses occurred in 58% of the positive samples. The most frequently isolated serovar in the carcasses was Salmonella Heidelberg (85.3%) followed by Salmonella spp. (10.6%). During slaughter, carcass positivity to Salmonella spp. was significantly different (p=0.047) between the first (19.6%) and the second (29.4%) shifts. The results alert for the possibility of carcass contamination during slaughtering and, therefore, more stringent hygiene measures between shifts must be implemented to mitigate carcass contamination.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Al-Olayan, J. Almushawah, H. Alrsheed, T.M. Dawoud, R. Abdel-Gaber
ABSTRACT Hymenolepiasis is the most common intestinal tapeworm infection in humans caused by an intestinal cestode, Hymenolepis nana. Praziquantel (PZQ) is the most effective drug among other compounds, however, many cases of drug resistance have been reported. Recent research projects have been focused on finding novel therapeutic agents from medicinal plants. In the present study, Aaronsohnia factorovskyi was used against hymenolepiasis in the forms of plant extract (AF) and biosynthesized nanoparticles (AF-NPs) in comparison to PZQ. The results showed that 100 mg/kg AF and 0.5 mg/kg AF-NPs were the most effective doses at suppressing the fecal egg output by 98.39% and 100%, respectively. After the 10th day of treatment, it was not feasible to detect the presence of H. nana eggs in the fecal sample’s examination in the AF-NPs group. Upon treatment with AF-NPs, there were more improvements in the structure of the intestinal tissue than the effect of AF alone and in comparison, to PZQ. Collectively, results showed that A. factoryviski can be used as an anti-hymenolepiasis treatment with minimum side effects and less cost. Also, it was found that NPs are the most effective way, as it offers a faster recovery rate in comparison to natural plant extract.
{"title":"Potential role of biosynthesized silver nanoparticles from Aaronsohnia factorovskyi on Hymenolepis nana in BALB/c mice","authors":"E. Al-Olayan, J. Almushawah, H. Alrsheed, T.M. Dawoud, R. Abdel-Gaber","doi":"10.1590/1678-4162-13041","DOIUrl":"https://doi.org/10.1590/1678-4162-13041","url":null,"abstract":"ABSTRACT Hymenolepiasis is the most common intestinal tapeworm infection in humans caused by an intestinal cestode, Hymenolepis nana. Praziquantel (PZQ) is the most effective drug among other compounds, however, many cases of drug resistance have been reported. Recent research projects have been focused on finding novel therapeutic agents from medicinal plants. In the present study, Aaronsohnia factorovskyi was used against hymenolepiasis in the forms of plant extract (AF) and biosynthesized nanoparticles (AF-NPs) in comparison to PZQ. The results showed that 100 mg/kg AF and 0.5 mg/kg AF-NPs were the most effective doses at suppressing the fecal egg output by 98.39% and 100%, respectively. After the 10th day of treatment, it was not feasible to detect the presence of H. nana eggs in the fecal sample’s examination in the AF-NPs group. Upon treatment with AF-NPs, there were more improvements in the structure of the intestinal tissue than the effect of AF alone and in comparison, to PZQ. Collectively, results showed that A. factoryviski can be used as an anti-hymenolepiasis treatment with minimum side effects and less cost. Also, it was found that NPs are the most effective way, as it offers a faster recovery rate in comparison to natural plant extract.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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