M. M. Nogueira, G. Lavalle, A. Botelho, J. Veado, G. Cassali, P. Paes, M. M. Melo
ABSTRACT The aim of the study was to investigate the nephrotoxicity of doxorubicin in cats with malignant neoplasms of the mammary gland. All selected cats did not present comorbidities such as nephropathies and/or cardiomyopathies, confirmed by physical and laboratory tests, underwent radical mastectomy associated with regional lymph node excision and were treated with a protocol based on doxorubicin. Renal markers of urea, creatinine, symmetrical dimethylarginine were evaluated during all the treatment, and two months after the end. Abdominal ultrasound, urinalysis and biochemical analysis of protein, urinary creatinine and urinary GGT were performed in the beginning and two months after the end of the treatment, to evaluate possible renal alterations. Six cats did not present renal alterations in any exams performed during the study. Two cats presented azotemia during this study, and one of them stopped the treatment early, because of the intense azotemia. Clinical imaging and laboratory monitoring of patients throughout the treatment is essential, including the measurement of analytes that detect kidney changes early. Thus, it is emphasized that doxorubicin is a safe drug for use in non-nephropathic cats.
{"title":"Doxorubicin nephrotoxicity in cats (Felis catus) with malignant mammary neoplasms","authors":"M. M. Nogueira, G. Lavalle, A. Botelho, J. Veado, G. Cassali, P. Paes, M. M. Melo","doi":"10.1590/1678-4162-12860","DOIUrl":"https://doi.org/10.1590/1678-4162-12860","url":null,"abstract":"ABSTRACT The aim of the study was to investigate the nephrotoxicity of doxorubicin in cats with malignant neoplasms of the mammary gland. All selected cats did not present comorbidities such as nephropathies and/or cardiomyopathies, confirmed by physical and laboratory tests, underwent radical mastectomy associated with regional lymph node excision and were treated with a protocol based on doxorubicin. Renal markers of urea, creatinine, symmetrical dimethylarginine were evaluated during all the treatment, and two months after the end. Abdominal ultrasound, urinalysis and biochemical analysis of protein, urinary creatinine and urinary GGT were performed in the beginning and two months after the end of the treatment, to evaluate possible renal alterations. Six cats did not present renal alterations in any exams performed during the study. Two cats presented azotemia during this study, and one of them stopped the treatment early, because of the intense azotemia. Clinical imaging and laboratory monitoring of patients throughout the treatment is essential, including the measurement of analytes that detect kidney changes early. Thus, it is emphasized that doxorubicin is a safe drug for use in non-nephropathic cats.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48347218","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 The present study investigated the influence of oral health on horses’ facial expression, reactivity of the acupuncture points and the perception of trainers and owners. We investigated 87 adult horses involved in sports or working activities. Pain was scored in person and by photography by an evaluator “blinded” to the animals’ dental condition, using the Horse Grimace Scale (HGS). The acupuncture examination was performed by the same evaluator. Animals were evaluated before (T0) and 15 days (T1) after dental treatment. All horses included in the study had dental disorders. Statistically significant results were seen in median HGS scoring (3 vs. 1, p = 0.001) and number of reactive acupoints (11.2±5.6 vs. 4±2.9, p = 0.001). Additionally, complaints by the trainers/owners were lower at T1 compared with T0. There was a reduction in the pain reaction to application of pressure on following acupoints: dental point (44 vs. 4), Stomach-7 (31 vs. 3), Tiple-Heater (TH)-17 (27 vs. 4), and TH-16 (22 vs. 4). We concluded that acupuncture can be an adjunct method for diagnosis of dental disorders and treatment follow-up.
{"title":"Influence of oral health on the facial expressions and on the acupuncture examination in equines","authors":"M. M. Coneglian, S. Weber, P. Michelotto Júnior","doi":"10.1590/1678-4162-12678","DOIUrl":"https://doi.org/10.1590/1678-4162-12678","url":null,"abstract":"ABSTRACT The present study investigated the influence of oral health on horses’ facial expression, reactivity of the acupuncture points and the perception of trainers and owners. We investigated 87 adult horses involved in sports or working activities. Pain was scored in person and by photography by an evaluator “blinded” to the animals’ dental condition, using the Horse Grimace Scale (HGS). The acupuncture examination was performed by the same evaluator. Animals were evaluated before (T0) and 15 days (T1) after dental treatment. All horses included in the study had dental disorders. Statistically significant results were seen in median HGS scoring (3 vs. 1, p = 0.001) and number of reactive acupoints (11.2±5.6 vs. 4±2.9, p = 0.001). Additionally, complaints by the trainers/owners were lower at T1 compared with T0. There was a reduction in the pain reaction to application of pressure on following acupoints: dental point (44 vs. 4), Stomach-7 (31 vs. 3), Tiple-Heater (TH)-17 (27 vs. 4), and TH-16 (22 vs. 4). We concluded that acupuncture can be an adjunct method for diagnosis of dental disorders and treatment follow-up.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45383382","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 The objective of this study was to analyze data on physical activity and rumination time monitored via collars at the farm coupled with milk yield recorded by the rotary milking system to predict cows based on several disorders using the binary Logistic regression conducted with R software. Data for metritis (n=60), mastitis (n=98), lameness (n=35), and digestive disorders (n=52) were collected from 1,618 healthy cows used to construct the prediction model. To verify the feasibility and adaptability of the proposed method, we analyzed data of cows in the same herd (herd 1) not used to construct the model, and cows in another herd (herd 2) with data recorded by the same type of automated system, and led to detection of 75.0%, 64.2%, 74.2%, and 76.9% animals in herd 1 correctly predicted to suffer from metritis, mastitis, lameness, and digestive disorders, respectively. For cows in herd 2, 66.6%, 58.8%, 80.7%, and 71.4% were correctly predicted for metritis, mastitis, lameness, and digestive disorders, respectively. Compared with traditional clinical diagnoses by farm personnel, the algorithm developed allowed for earlier prediction of cows with a disorder.
{"title":"Prediction of health disorders in dairy cows monitored with collar based on Binary logistic analysis","authors":"Xiaojing Zhou, Chuang Xu, Zixuan Zhao, Hao Wang, Meng Chen, Bin Jia","doi":"10.1590/1678-4162-12880","DOIUrl":"https://doi.org/10.1590/1678-4162-12880","url":null,"abstract":"ABSTRACT The objective of this study was to analyze data on physical activity and rumination time monitored via collars at the farm coupled with milk yield recorded by the rotary milking system to predict cows based on several disorders using the binary Logistic regression conducted with R software. Data for metritis (n=60), mastitis (n=98), lameness (n=35), and digestive disorders (n=52) were collected from 1,618 healthy cows used to construct the prediction model. To verify the feasibility and adaptability of the proposed method, we analyzed data of cows in the same herd (herd 1) not used to construct the model, and cows in another herd (herd 2) with data recorded by the same type of automated system, and led to detection of 75.0%, 64.2%, 74.2%, and 76.9% animals in herd 1 correctly predicted to suffer from metritis, mastitis, lameness, and digestive disorders, respectively. For cows in herd 2, 66.6%, 58.8%, 80.7%, and 71.4% were correctly predicted for metritis, mastitis, lameness, and digestive disorders, respectively. Compared with traditional clinical diagnoses by farm personnel, the algorithm developed allowed for earlier prediction of cows with a disorder.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41545090","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 The aim of this study was to evaluate the effect of exogenous amylase on gas production, in vitro dry matter digestibility (IVDMD), and in vitro digestion kinetics of sorghum (Sorghum vulgaris) and two corn hybrids of different grain textures. Ruminal fluid was collected from two rumen-fistulated cows receiving or not exogenous amylase (0.7g kg-1 of dry matter (DM basis)), provided to achieve 396 kilo Novo units kg-1 for amylase activity (DM basis). Gas production was measured after 1, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42 e 48 hours of incubation. Amylase increased gas production (mL) by 5.4%. Corn hybrids have higher in vitro dry matter digestibility than sorghum. Exogenous amylase increased the potential of gas production (A) (P=0.01). There was an effect of hybrid for IVDMD (P<0.01). The addition of exogenous amylase increases the in vitro gas production, improves fermentation kinetics, and increases the production of the ammonia nitrogen of corn and sorghum grains, but does not affect in vitro and dry matter digestibility or the short-chain fatty acids production.
摘要本研究旨在评估外源淀粉酶对高粱（sorghum vulgaris）和两个不同质地玉米杂交种的产气、体外干物质消化率（IVDMD）和体外消化动力学的影响。从接受或不接受外源淀粉酶（0.7g kg-1干物质（DM基））的两头瘤胃造瘘奶牛中收集瘤胃液，以达到396公斤Novo单位kg-1的淀粉酶活性（DM基。在培养1、3、6、9、12、15、18、21、24、30、36、42 e 48小时后测量气体产量。淀粉酶使产气量（mL）增加5.4%。玉米杂交种的体外干物质消化率高于高粱。外源淀粉酶增加了产气潜力（A）（P=0.01）。IVDMD存在杂交效应（P<0.01）。外源淀粉酶的加入增加了体外产气，改善了发酵动力学，增加了玉米和高粱籽粒的氨氮产量，但不影响体外和干物质的消化率或短链脂肪酸的产生。
{"title":"Exogenous amylase increases gas production and improves in vitro ruminal digestion kinetics of sorghum and corn grains","authors":"A.S. Silva, L. Pereira, M. Pedreira, F. S. Machado, M. M. Campos, C. Cortinhas, T. Acedo, R. D. Santos, J. Rodrigues, R. M. Maurício, T. R. Tomich","doi":"10.1590/1678-4162-12803","DOIUrl":"https://doi.org/10.1590/1678-4162-12803","url":null,"abstract":"ABSTRACT The aim of this study was to evaluate the effect of exogenous amylase on gas production, in vitro dry matter digestibility (IVDMD), and in vitro digestion kinetics of sorghum (Sorghum vulgaris) and two corn hybrids of different grain textures. Ruminal fluid was collected from two rumen-fistulated cows receiving or not exogenous amylase (0.7g kg-1 of dry matter (DM basis)), provided to achieve 396 kilo Novo units kg-1 for amylase activity (DM basis). Gas production was measured after 1, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42 e 48 hours of incubation. Amylase increased gas production (mL) by 5.4%. Corn hybrids have higher in vitro dry matter digestibility than sorghum. Exogenous amylase increased the potential of gas production (A) (P=0.01). There was an effect of hybrid for IVDMD (P<0.01). The addition of exogenous amylase increases the in vitro gas production, improves fermentation kinetics, and increases the production of the ammonia nitrogen of corn and sorghum grains, but does not affect in vitro and dry matter digestibility or the short-chain fatty acids production.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46089779","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. Rorig, J. R. Garcez, L. A. Baumgartner, M. R. Matos, M. Wilmsen, S.U. Cardoso, S. D. Silveira, R. A. Bombardelli
ABSTRACT Different anesthetic agents are commonly used during procedures performed in aquaculture to minimize stress and maximize fish welfare during handling. A Kinguio fish was treated with a history of a mass near the left eye. In the clinical evaluation, a pedunculated neoformation was found in the periocular region. The fish was submitted to anesthesia for surgical removal of the mass, which was later referred to histopathological evaluation, revealing myxoma. The anesthesia protocol used 1% propofol at a concentration of 5 mg/liter of water and morphine at a dose of 5 mg/kg, intramuscularly. Immediately after the end of the procedure, the fish was returned to the aquarium and its anesthetic recovery was observed. The objective of this report is to describe a surgical procedure in kinguio fish and to determine the efficacy of propofol associated with morphine in this species. As a result, complete immobilization of the fish was obtained with propofol, reaching the fourth stage of anesthesia and the administration of morphine suggested being able to provide effective and long-lasting analgesia. It is concluded that despite the positive results obtained, anesthesia in fish still needs to be extensively investigated to refine analgesia protocols during procedures that cause pain and stress.
{"title":"Surgical removal of periocular neoformation in Peixe -Kinguiu (Carassius Auratus) submitted to anesthesia with propofol in combination with morphine - case report","authors":"M. Rorig, J. R. Garcez, L. A. Baumgartner, M. R. Matos, M. Wilmsen, S.U. Cardoso, S. D. Silveira, R. A. Bombardelli","doi":"10.1590/1678-4162-12676","DOIUrl":"https://doi.org/10.1590/1678-4162-12676","url":null,"abstract":"ABSTRACT Different anesthetic agents are commonly used during procedures performed in aquaculture to minimize stress and maximize fish welfare during handling. A Kinguio fish was treated with a history of a mass near the left eye. In the clinical evaluation, a pedunculated neoformation was found in the periocular region. The fish was submitted to anesthesia for surgical removal of the mass, which was later referred to histopathological evaluation, revealing myxoma. The anesthesia protocol used 1% propofol at a concentration of 5 mg/liter of water and morphine at a dose of 5 mg/kg, intramuscularly. Immediately after the end of the procedure, the fish was returned to the aquarium and its anesthetic recovery was observed. The objective of this report is to describe a surgical procedure in kinguio fish and to determine the efficacy of propofol associated with morphine in this species. As a result, complete immobilization of the fish was obtained with propofol, reaching the fourth stage of anesthesia and the administration of morphine suggested being able to provide effective and long-lasting analgesia. It is concluded that despite the positive results obtained, anesthesia in fish still needs to be extensively investigated to refine analgesia protocols during procedures that cause pain and stress.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45450011","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 This report described temporary hyperpigmentation occurring in a cat after use of the FreeStyle® Libre sensor by applying three different adhesive glues. The device was continuously used as an aid for the treatment of diabetes mellitus. Histopathological examination revealed mild focal chronic active dermatitis. While the coat color change occurred due to inflammation and did not affect the device functioning, owners should be alerted to the possibility of this complication.
{"title":"Temporary hyperpigmentation as a complication of fixing the freestyle libre sensor in a cat - a case report","authors":"S. M. Castro, H. Souza, D. Alexander, G. C. Cid","doi":"10.1590/1678-4162-12896","DOIUrl":"https://doi.org/10.1590/1678-4162-12896","url":null,"abstract":"ABSTRACT This report described temporary hyperpigmentation occurring in a cat after use of the FreeStyle® Libre sensor by applying three different adhesive glues. The device was continuously used as an aid for the treatment of diabetes mellitus. Histopathological examination revealed mild focal chronic active dermatitis. While the coat color change occurred due to inflammation and did not affect the device functioning, owners should be alerted to the possibility of this complication.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47058791","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 Degradation of bovine small intestine and respective effects on biomechanics have not been described to date. Biomechanical testing of intestinal tissues is often carried out within a few hours of donor death and tissue deterioration is not accounted for. Freezing is efficient for the preservation of several tissues; however, it may cause cellular damage. This study investigated the morphologic and biomechanical changes of bovine jejunum at different postmortem moments. Effects of freezing and thawing on morphology and biomechanical behavior were also examined. Macroscopic changes were first noted within eight hours of death. At this time, histologic changes also started to set in, and biomechanical tests revealed lower bursting pressure (203.10±46.14mmHg). At 12 hours, tissue rearrangement was noted, and bursting pressure increased (238.43±31.04mmHg). A second drop in pressure was detected at 18 hours (235.20±38.21mmHg), followed by a progressive drop until the end of the experimental period. Histologic changes revealed progressive deterioration. Mechanical resistance did not differ between thawed and fresh specimens. It was concluded that bovine jejunal specimens retain biomechanical resistance up to 6 hours after death. Freezing and thawing did not affect the mechanical resistance of the intestinal wall in this experimental model.
{"title":"Effects of time-dependent degradation and freezing on biomechanical properties of healthy bovine jejunum","authors":"M. M. Matheus, N. Oliveira, M. Pereira, A. Franciolli, F. Blazquez, E.J.X. Costa, L.C.L.C. Silva, A. Zoppa, R. R. Corrêa","doi":"10.1590/1678-4162-12895","DOIUrl":"https://doi.org/10.1590/1678-4162-12895","url":null,"abstract":"ABSTRACT Degradation of bovine small intestine and respective effects on biomechanics have not been described to date. Biomechanical testing of intestinal tissues is often carried out within a few hours of donor death and tissue deterioration is not accounted for. Freezing is efficient for the preservation of several tissues; however, it may cause cellular damage. This study investigated the morphologic and biomechanical changes of bovine jejunum at different postmortem moments. Effects of freezing and thawing on morphology and biomechanical behavior were also examined. Macroscopic changes were first noted within eight hours of death. At this time, histologic changes also started to set in, and biomechanical tests revealed lower bursting pressure (203.10±46.14mmHg). At 12 hours, tissue rearrangement was noted, and bursting pressure increased (238.43±31.04mmHg). A second drop in pressure was detected at 18 hours (235.20±38.21mmHg), followed by a progressive drop until the end of the experimental period. Histologic changes revealed progressive deterioration. Mechanical resistance did not differ between thawed and fresh specimens. It was concluded that bovine jejunal specimens retain biomechanical resistance up to 6 hours after death. Freezing and thawing did not affect the mechanical resistance of the intestinal wall in this experimental model.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46912719","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 The present study aimed to assess the influence of physiological exposure to erythrocyte indices; the morphometric parameters of the size of erythrocytes, as well as synergistic effects on the erythrocyte spectrum changes in various species being reared in different strip-wasteland conditions. We collected samples from 400 animals from the jugular veins and made 2000 blood smears, sample blood was taken by an expert veterinary doctor and transferred into an EDTA vacutainer. Blood smears were stained through the Pappenheim procedure and slides were photomicrographed under 100x objective. The parameters of morphometry of erythrocytes were largest in cattle after buffalo, sheep, while goats have the lowest one. The influence of age was significant p<0.05. The influence of sex was not significant in Cattle p<0.01, values of a parameter of erythrocytes were higher in young than in adults in sheep, goats, cattle, and buffalo. The size of erythrocytes in males was higher than females in sheep, goat, and buffalo but in cattle values of female erythrocytes were higher than in males. Further, gender, altitude, and age have a profound influence on the morphometric attributes of erythrocytes. It will be helpful in interpreting etiopathogenetic conditions in human beings and other animals.
{"title":"Morphometric analysis on erythrocytes of various livestock being reared in the Cholistan desert","authors":"S. Parveen, M. Lashari, Umer Farooq","doi":"10.1590/1678-4162-12767","DOIUrl":"https://doi.org/10.1590/1678-4162-12767","url":null,"abstract":"ABSTRACT The present study aimed to assess the influence of physiological exposure to erythrocyte indices; the morphometric parameters of the size of erythrocytes, as well as synergistic effects on the erythrocyte spectrum changes in various species being reared in different strip-wasteland conditions. We collected samples from 400 animals from the jugular veins and made 2000 blood smears, sample blood was taken by an expert veterinary doctor and transferred into an EDTA vacutainer. Blood smears were stained through the Pappenheim procedure and slides were photomicrographed under 100x objective. The parameters of morphometry of erythrocytes were largest in cattle after buffalo, sheep, while goats have the lowest one. The influence of age was significant p<0.05. The influence of sex was not significant in Cattle p<0.01, values of a parameter of erythrocytes were higher in young than in adults in sheep, goats, cattle, and buffalo. The size of erythrocytes in males was higher than females in sheep, goat, and buffalo but in cattle values of female erythrocytes were higher than in males. Further, gender, altitude, and age have a profound influence on the morphometric attributes of erythrocytes. It will be helpful in interpreting etiopathogenetic conditions in human beings and other animals.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49064557","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 The objective of this study was to evaluate the effects of diets composed of corn grain silage rehydrated with water and acid whey on the productive performance and feed preference of weaned piglets. We evaluated 120 piglets weaned in the pre-initial phase I for productive performance, and diarrhea, depression, and thinness states using the following diets: control ration with dry corn grain (CR); and corn grain silage rehydrated with water (CGSR+W); water and inoculant (CGSR+WI); and acid whey (CGSR+AW). To determine feed preference, 20 weaned piglets received reference (CR) and test (CGSR+AW) diets in two phases, restricted and free-choice. Analysis of variance, chi-square test, and t-test were applied at 5% of significance. There were no differences (p>0.05) in growth performance among piglets fed the four experimental diets. Severe thinness and depression were recorded among piglets fed CGSR+W and CR (p<0.05). In the restricted phase, consumption of CGSR+AW resulted in higher daily feed intake (DFI) (p<0.05), while piglets in the free-choice phase showed a higher DFI and spent more time consuming CR, with a 56.39% preference (p<0.05). Rehydrated corn grain silage promoted feed acceptability and performance of piglets in the first weeks post-weaning.
{"title":"Performance and feed preference of weaned piglets fed with corn grain silage subjected to different rehydration sources","authors":"E. Zanin, E. H. Horst, J. Dário, C.K.B. Krzezanovski, G. Ruiz, J. A. Fregonesi, C. A. Silva, V. H. Bumbieris Junior","doi":"10.1590/1678-4162-12812","DOIUrl":"https://doi.org/10.1590/1678-4162-12812","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the effects of diets composed of corn grain silage rehydrated with water and acid whey on the productive performance and feed preference of weaned piglets. We evaluated 120 piglets weaned in the pre-initial phase I for productive performance, and diarrhea, depression, and thinness states using the following diets: control ration with dry corn grain (CR); and corn grain silage rehydrated with water (CGSR+W); water and inoculant (CGSR+WI); and acid whey (CGSR+AW). To determine feed preference, 20 weaned piglets received reference (CR) and test (CGSR+AW) diets in two phases, restricted and free-choice. Analysis of variance, chi-square test, and t-test were applied at 5% of significance. There were no differences (p>0.05) in growth performance among piglets fed the four experimental diets. Severe thinness and depression were recorded among piglets fed CGSR+W and CR (p<0.05). In the restricted phase, consumption of CGSR+AW resulted in higher daily feed intake (DFI) (p<0.05), while piglets in the free-choice phase showed a higher DFI and spent more time consuming CR, with a 56.39% preference (p<0.05). Rehydrated corn grain silage promoted feed acceptability and performance of piglets in the first weeks post-weaning.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44499429","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 This study aimed to determine the efficacy and parasite resistance of levamisole (LV) and ivermectin (IVM) in beef cattle naturally infected with gastrointestinal nematodes, as well as the effect on the liveweight gain in a tropical wet region of Oaxaca, Mexico. From November 2019 to January 2020, sixty-six grazing calves were randomly allocated into three groups of twenty-two animals each, treated with LV or IVM or an untreated control group (day 0). Feces were collected 1 day before treatment and 15 days after treatment. The liveweight gain from each animal was recorded at days 0, 15, 30 and 45 post treatment. The LV group presented the highest reduction of eggs per gram (EPG) of feces, followed by the IVM group. Resistance to IVM was detected, although LV resistance was also suspected. The IVM group had significantly higher effective treatment at 93.5%, resulting in an increase (P<0.05) of liveweight gain of 16.1kg, followed by the LV group (92.4%) with 17.1kg, compared to the untreated control group. A significant (P < 0.05) negative correlation was observed between EPG and weight gain for the LV (�� = -0.46) and IVM groups (�� = -0.32). LV and IVM showed a lack of efficacy against gastrointestinal nematodes, as well as an adequate capacity for EPG reduction but with IVM resistance and detrimental effects on growth performance in grazing beef cattle.
{"title":"Anthelmintic resistance against gastrointestinal nematodes in beef cattle: effect on liveweight gain of grazing livestock in Mexico","authors":"U. Libreros-Osorio, D. D. Vázquez-Arrieta, I. D. Limón, A. Patricio-Martínez, F. Patricio, A. Villa-Mancera","doi":"10.1590/1678-4162-12917","DOIUrl":"https://doi.org/10.1590/1678-4162-12917","url":null,"abstract":"ABSTRACT This study aimed to determine the efficacy and parasite resistance of levamisole (LV) and ivermectin (IVM) in beef cattle naturally infected with gastrointestinal nematodes, as well as the effect on the liveweight gain in a tropical wet region of Oaxaca, Mexico. From November 2019 to January 2020, sixty-six grazing calves were randomly allocated into three groups of twenty-two animals each, treated with LV or IVM or an untreated control group (day 0). Feces were collected 1 day before treatment and 15 days after treatment. The liveweight gain from each animal was recorded at days 0, 15, 30 and 45 post treatment. The LV group presented the highest reduction of eggs per gram (EPG) of feces, followed by the IVM group. Resistance to IVM was detected, although LV resistance was also suspected. The IVM group had significantly higher effective treatment at 93.5%, resulting in an increase (P<0.05) of liveweight gain of 16.1kg, followed by the LV group (92.4%) with 17.1kg, compared to the untreated control group. A significant (P < 0.05) negative correlation was observed between EPG and weight gain for the LV (�� = -0.46) and IVM groups (�� = -0.32). LV and IVM showed a lack of efficacy against gastrointestinal nematodes, as well as an adequate capacity for EPG reduction but with IVM resistance and detrimental effects on growth performance in grazing beef cattle.","PeriodicalId":8393,"journal":{"name":"Arquivo Brasileiro De Medicina Veterinaria E Zootecnia","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42295732","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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