خيارات البحث
النتائج 631 - 640 من 677
Olfactory stimulus as environmental enrichment for shelter dogs النص الكامل
2023
Milene Paula Figueira | Fernanda Fatima Rodrigues Silva | Alice Ribeiro | Ita Oliveira Silva | Vanner 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.
اظهر المزيد [+] اقل [-]Probiotics supplementation reduces cigarette smoke-induced damage in the respiratory micro-architecture of mice النص الكامل
2023
Komal Khan | Hafsa Zaneb | Saima Masood | Saima Ashraf | Mirza Muhammad 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.
اظهر المزيد [+] اقل [-]Use of organic acids to reduce Salmonella Typhimurium excretion in swine النص الكامل
2023
Daniela Gomes da Silva | Eduarda Alexandra Gonçalves de Oliveira Moura | Thainara Vitoria Carnevalli Sanches | Caio Henrique Turco | Beatriz Belloni Zambotti | Fernando Antônio Moreira Petri | Gabriel Yuri Storino | Henrique Meiroz de Souza Almeida | Isabela Peixoto Rabelo | Marina Lopes Mechler-Dreibi | Karina Sonalio | Renato Ravetti | Luis Guilherme de Oliveira
The use of antimicrobials as growth promoters and disease prevention is being constantly reduced in several animal production systems, including in the swine industry. Therefore, this study aimed to evaluate the effectiveness of using acidifiers to control Salmonella Typhimurium in 65-day-old pigs by detecting the pathogen in organs at euthanasia. For this, 24 piglets were divided into two experimental groups consisting of 12 piglets each. An untreated control group (G1) and a treatment group (G2) received a liquid organic acidifier in the drinking water for 10 days (D-5 to D5). Five days after the start of treatment (D0), all piglets were challenged with 106 CFU of Salmonella Typhimurium and assessed for 12 days (D12). Every three days (D3, D6, D9, and D12), three animals from each experimental group were euthanized and then submitted for necropsy. Samples from the intestines (ileum, cecum, mesenteric lymph nodes, and ileocolic lymph nodes), liver, spleen, and lungs were collected to isolate Salmonella. The results show that, numerically, Salmonella isolation in the organs of G2 was lower than in G1 and that the number of positive cecum samples in G1 (66.7%; 8/12) was statistically different from the number of positive models in G2 (16.7%; 2/12), with a reduction of 28.6% of the total cecum positive samples in the treated group compared to the control. Therefore, it was observed that the liquid organic acidifier product could reduce the colonization of organs by Salmonella Typhimurium.
اظهر المزيد [+] اقل [-]Pharmacopuncture with a low dosage of B complex vitamins in the Da Zhui acupoint (Governing Vessel 14) for controlling gastrointestinal parasitism in periparturient ewes النص الكامل
2023
Fernanda Rosalinski-Moraes | Paula Mara Troncha | Wilson Junior Oliveira | Marco Túlio Santos Siqueira | Vinícius Vieira de Paiva | Márcia Valéria Rizzo Scognamillo
Gastrointestinal parasites are a significant challenge in sheep farming, and periparturient ewes are one of the most susceptible categories in sheep flocks. This study aimed to verify whether the injection of B vitamins at the acupuncture point governing vessel 14 (GV14) can influence the parasitic load or host parasite interaction in naturally infected ewes during the peripartum period. Four weeks before parturition, 25 ewes were divided into five treatment groups: (1) Dose Control: 0.2 mL of B complex via IM; (2) Drug Control: 2 mL Complex B via IM; (3) Acupoint Control: 0.2 mL of Water at GV14 point; (4) Control; (5) Test group: 0.2 mL of B complex at the GV14 point. Treatments were performed at weeks -3, -1, 2, 4, and 6 about the parturition time. Fecal samples to estimate the parasitic load by fecal egg counts (FEC) and total blood samples for hemogram examination were performed seven days after the treatment, coinciding with weeks -2, 3, 5, and 7 about the parturition time. The number of peripheral eosinophils was higher in group 3 than in group 1 (p <0.05). Although groups 3 and 5 had lower mean values of FEC and higher hematological values at the time of weaning, these differences were not statistically significant (p> 0.05) according to the F test. However, all animals in groups 3 and 5 maintained low parasitism levels until the end of the experiment. Further studies should be performed with larger sample sizes and minor changes to the experimental protocol to elucidate the role of GV14 acupoint stimulation in the host-parasite relationship.
اظهر المزيد [+] اقل [-]Effect of exogenous emulsifier and different fat sources on the performance, carcass characteristics, nutrient digestibility, and serum lipid profile of broiler chickens النص الكامل
2023
Fernando Barbosa Tavares | Kedson Raul de Souza Lima | Maria Cristina Manno | Yan Matheus Leary Barata | Higor César de Oliveira Pinheiro | Janaína de Cássia Braga Arruda | Cristian Faturi
A study was conducted to evaluate the effect of an emulsifier on reduced-energy diets using two fat sources for broilers. The study was designed as a 2 x 3 factorial arrangement of treatments. The first factor was 2 fat sources (poultry fat or beef tallow). The second factor was a basal diet with the recommended energy levels, a diet with a 0.83 MJ/kg of energy reduction, and a diet with an energy reduction and inclusion of 1 g emulsifier/kg of diet. The emulsifier used in this study was composed of soy lecithin and polyethylene glycol ricinoleate. The emulsifier increased apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen balance (AMEn) in beef tallow diets compared to energy-reduced diets (P<0.001). Broilers fed poultry fat had higher weights and weight gains at 35 and 42 d of age (p=0.001), and they had higher daily deposition of fat in the carcass (P = 0.025) when compared to diets with beef tallow. The inclusion of emulsifiers in broiler diets improves AME and AMEn but did not affect the energy reduction diets, which resulted in reduced performance, decreasing daily fat deposition, but without effects on serum lipid profile in broilers.
اظهر المزيد [+] اقل [-]Anesthetic protocol using propofol and isoflurane in spectacled bear (Tremarctos ornatus) النص الكامل
2023
Júlio Rodrigues Pereira Júnior | Marília Gabryelle Guimarães de Macêdo | Fernanda Vieira Henrique | Roberto Citelli Farias | ; Thiago Ferreira Lopes Neri | Flávia Ferreira de Menezes
The management of wild animals generally requires chemical containment with the use of sedatives, tranquilizers, general anesthetics or dissociative drugs. The spectacled bear (Tremarctos ornatus) is the only member of the family Ursidae characteristic of South America. There are few reports on the main anesthetic protocols used in this specie. The aim of the present study was to report the use of propofol and isoflurane in a captive spectacled bear, after sedation with tiletamine-zolazepam. A male bear approximately 15 years old and 264 lb (scale weight) underwent anesthesia for treatment of a recurrent ulcerated wound on the neck. A combination of tiletamine and zolazepam injected intramuscularly was initially used. Due to the need to prolong the anesthetic time, the decision was made to administer propofol 1% (4.0 mg/kg/IV), which proved satisfactory regarding the inhibition of eyelid and laryngotracheal reflexes, thereby facilitating tracheal intubation. The subsequent use of isoflurane provided adequate maintenance of anesthesia, with vital signs within the normal range for the species, but there was hyperthermia. Based on the present findings, the use of tiletamine/zolazepam, propofol and isoflurane proved satisfactory and the doses employed were safe for the spectacled bear (Tremarctos ornatus). Inhalation anesthesia was essential to prolonging the time and maintaining safety throughout the procedure.
اظهر المزيد [+] اقل [-]Erratum: Ultrasonographic aspects of the gallbladder mucocele in 30 dogs: retrospective study النص الكامل
2023
Fernanda de Carlo Deusdado | Carla Aparecida Batista Lorigados | Marianna Pantano | Ayne Murata Hayashi | Fabio Calderon
Gallbladder mucocele is characterized by hyperplasia of the gallbladder epithelium, increased mucus production, accumulation, and densification of the bile content, which can lead to biliary obstruction, necrosis, and rupture of the gallbladder wall. Its finding may be accidental or related to symptoms. A retrospective study (2016-2019) was carried out based on abdominal ultrasound examinations in dogs, correlating aspects of the gallbladder and biliary system in the mucocele with existing comorbidities. Thirty dogs diagnosed with biliary mucocele were evaluated, of which 46.66% had the disease at an early stage, and 53.33% showed a more advanced stage. Of these, 66.66% were related to endocrinopathies and hyperadrenocorticism. Signs of extrahepatic bile duct obstruction and biliary peritonitis were observed in two animals. Due to their potential risk of complications, follow-up ultrasound assessments are indicated in cases that opt for clinical treatment, not excluding the need for surgical intervention.
اظهر المزيد [+] اقل [-]Persistent right aortic arch in the cat: a case report from a late surgical approach النص الكامل
2023
Anderson Prado Duzanski | Carla Aparecida Batista Lorigados | Igor de Almeida Santos | Silvana Maria Unruh | Julia Maria Matera | Aline Magalhães Ambrósio | Jeovan Santos Macedo | Bruna Maria Pereira Coelho | Ayne Murata Hayashi
Aortic arch anomalies can give rise to vascular rings, such as persistent right aortic arch (PRAA), a rare vascular anomaly in cats with significant health implications. Here, we report late surgical correction in a case of PRAA, an almost 12-month-old cat with the clinical syndrome of dysphagia and postprandial regurgitation. The patient was presented to the veterinary hospital at FMVZ-USP with a history of chronic regurgitation since puppyhood after weaning, with a significant worsening of the clinical condition 10 days ago. Computed tomography had a potential role in diagnosing and detecting complications of PRAA, allowing surgical planning. Approach via left thoracotomy and section of the arteriosus ligament resulted in the successful resolution of extrinsic esophageal compression due to PRAA with the restoration of normal swallowing of a dry diet by the cat and absence of esophageal sequelae on radiographic assessment in a six-month clinical follow-up.
اظهر المزيد [+] اقل [-]Misdiagnosis of canine monocytic ehrlichiosis: why do we still risk animal lives? النص الكامل
2023
Lizandra Fernandes da Silva | Priscila Gomes de Oliveira | Amanda Noeli da Silva Campos | Vera Lúcia Dias da Silva | Klaus Casaro Saturnino | Ísis Assis Braga | Daniel Moura de Aguiar | Dirceu Guilherme de Souza Ramos | Cecília Nunes Moreira
Canine Monocytic Ehrlichiosis (CME) is a tick-borne disease caused by Ehrlichia canis that manifests as acute, chronic, or subclinical forms without specific clinical symptoms. This disease is diagnosed using clinical and laboratory findings (blood smears, molecular techniques, and serology). This study aimed to demonstrate the occurrence of false-positive results for Ehrlichia spp. in veterinary clinical practice. Seventy dogs with positive blood smears before treatment for Ehrlichia spp. subjected to doxycycline and imidazole treatment were analyzed using hematological examination, polymerase chain reaction (PCR), and indirect immunofluorescence assay. PCR analysis identified no samples positive for E. canis according to PCR analysis, while serological techniques showed a frequency of 51.4% in dogs with antibodies (IgG) against Ehrlichia spp. There was a correlation between hyperproteinemia and titers > 10,240. Nonspecific changes occurred in 24.3% (17/70) of the patients with CME, such as anemia, leukopenia, and thrombocytopenia. The results indicated that the blood count and blood smear analysis were insufficient for diagnosis and that positive serological results associated with hematological changes suggestive of ehrlichiosis in dogs can be incorrectly assigned by a veterinarian, putting animals at risk.
اظهر المزيد [+] اقل [-]Comparative digital study of two cranial rotation methods of the proximal fragment on the center of rotation of angulation-based leveling osteotomy planning with different tibial distal anatomical axes النص الكامل
2023
Barbara Georgina Cosgalla Navarro | Eduardo Alberto Tudury | Gabriel Ignacio Ramirez Flores
The center of rotation of angulation (CORA)-based leveling osteotomy (CBLO) technique was developed for cranial cruciate ligament (CrCL) rupture treatment, aiming to modify the mechanical-anatomical angle (AMA), which is described as a predictive risk factor for the disease and is recommended to be taken into consideration when one is choosing a surgical procedure for tibial plateau slope alteration. Identifying a tibial distal anatomical axis (DAA) is essential in CBLO surgical planning and measuring AMA amplitude. The aim of this study was: to evaluate two methods of cranial rotation of the proximal fragment using four different tibial distal anatomical axes for digital planning on the CBLO technique, comparing its effectiveness in achieving the desired tibial plateau angle (TPAd) and closing the AMA angle. Tibial measurements were made with the vPOP pro software using 30 mediolateral radiographs of canine stifles. The DAA described by four authors was used based on the amount of Rotation completed (Rc) for each. The rotation methods evaluated were: 1) commercial CBLO table (RT) and 2) overlapping the tip of the intercondylar eminence with the corresponding DAA line (RE). The TPAd to be obtained was fixed at 10°, and the final AMA to be achieved at 0°. The mean values and standard deviations of the final TPA and final AMA with the rotation method were TPA(RT)f(%TPAd), TPA(RE)f(%TPAd), AMA(RT)f(%AMAzero), AMA(RE)f(%AMAzero). The results of each author were Hulse 10.0 ± 0.3(46.6%), 9.9 ± 0.1(60%), 0.3 ± 0.3(33.3%), 0.3 ± 0.3(13.3%), Osmond 10.1 ± 0.2(75%), 10,1 ± 0.2(83.3%), 0.4 ± 0.4(33.3%), 0.4 ± 0.3(8,3%), Miles 10.0 ± 0.1(66.6%), 10.0 ± 0.1(75%), 0.2 ± 0.1(16.6%), 0.2 ± 0.1(8.3%), Tudury 9.6 ± 0.6(31.2%), 9.5 ± 0.2(31.2%), 1.0 ± 0.7(18.7%), 1.0 ± 0.6(12.5%), respectively. The initially described RT obtained a higher percentage of AMA at zero degrees. Therefore, the RE method is discarded for use as an alternative to CBLO planning.
اظهر المزيد [+] اقل [-]