Affiner votre recherche
Résultats 31-40 de 677
Rams sexually activated in spring by light treatment stimulate social and sexual activities in non-activated rams Texte intégral
2023
Palacios, Carlos | Martínez-López, Alam, A | Campos-Marmolejo, Silvia, A | Plaza, Javier | Keller, Matthieu | Chemineau, Philippe | Delgadillo, Jose, A | Abecia, José, A | Facultad de Ciencias Agrarias y Ambientales ; Partenaires INRAE | Instituto de Ciencias Nucleares, UNAM ; Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM) | Physiologie de la reproduction et des comportements [Nouzilly] (PRC) ; Institut Français du Cheval et de l'Equitation [Saumur] (IFCE)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Universidad Autónoma Agraria Antonio Narro (UAAAN) | Instituto Universitario en investigación en Ciencias Ambientales de Aragón (IUCA) ; Universidad de Zaragoza = University of Zaragoza [Saragossa University] = Université de Saragosse
International audience | Twelve rams were used to confirm whether rams sexually activated in spring by light treatment increase social and sexual activities of non-treated rams in the presence of ewes. Males were divided into 2 groups: light-treated rams (group L, n = 6), which were exposed to artificial long days (16 h light) for 2 months (1 Nov-31 Dec), or non-exposed, control rams (group C, n = 6), exposed to the natural pho-toperiod. At the end of the long-day period, light-treated rams were returned to the natural photoperiod, groups isolated from each other. In mid-Feb, 3 rams from each group were put together such that 4 ex-perimental groups were created: the remaining light-treated rams (L, n = 3), the remaining control rams (C, n = 3), and the other treated (L-mixed n = 3) and non-treated (C-mixed, n = 3) rams, exposed to 30, 30, and 60 ewes, respectively, in 3 separate paddocks. To identify each ram, large (30-cm-high) numbers were painted on the sides and rump of the males with washable sheep spray paint. Behaviors were doc-umented by 4 video cameras using 6 30-minute segments from 1600 to 1800 h the following day (27 hours). C rams presented the lowest proportion of activities ( P < 0.01), and C-mixed rams exhibited pro-portions similar to L and L-mixed rams. C rams exhibited the fewest fight attempts ( P < 0.001), fighting ( P < 0.05), pushing ( P < 0.001), and sniffing another ram. The groups differed significantly ( P < 0.001) in pushing, pawing, flehmen, and attempt mounting, and C rams had the fewest interactions. In conclusion, rams exposed to 2 months of long days at late-autumn early-winter increased social and sexual activities of unexposed rams. These observations can be explained by a "ram-to-ram effect", which can enhance the endocrine activity of rams in sexual rest if they are joined with rams who have been made sexually active by a photoperiodic treatment. These findings suggest that socio-sexual interactions could be used to restrict out-of-season reproduction in this species.
Afficher plus [+] Moins [-]Transplacental transmission of equine piroplasmosis Texte intégral
2023
Hermans, Lisa-Marie | Leblond, Agnès | Josson, Anne | Bonsergent, Claire | Malandrin, Laurence | VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS) | Unité Mixte de Recherche d'Épidémiologie des maladies Animales et zoonotiques (UMR EPIA) ; VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Biologie, Epidémiologie et analyse de risque en Santé Animale (BIOEPAR) ; École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
2/3 | International audience
Afficher plus [+] Moins [-]Retrospective Evaluation of Spinal Trauma Treatments in 58 Cats and 12 Dogs Texte intégral
2023
Yayla, Sadık | Altan, Semih | Çatalkaya, Emine | Ersöz Kanay, Berna | Saylak, Nahit | Kılınç, Mehmet
Traumatic vertebral fractures and/or dislocations in cats and dogs can cause severe spinal cord injury, resulting in severe conditions such as pain, urinary incontinence, paresis or paraplegia. This study involved 58 cats and 12 dogs with external spinal trauma, and it was aimed to present the etiology, treatment and results, retrospectively. After the location of the neurological damage was determined, the patients were treated either conservatively or surgically. One of the surgical methods such as polyaxial screw, locking plate application and external fixation application was decided. In the treated animals, complete recovery was seen in 10 cats and functional recovery in 14 cats and 1 dog, but 12 cats and 2 dogs were in poor condition. Loss of deep pain sensation after spinal trauma is important for prognosis. Although there are many different treatment options, the decision should be made according to the patient's condition and the surgeon's preference. In addition, patients with spinal trauma also require serious trauma management and it is very important that the animal's vital values are stable.
Afficher plus [+] Moins [-]Comparison of The Efficacy of Intratesticular Lidocaine and Bupivacaine During Castration in Cats Texte intégral
2023
Tan, Belemir | Elma, Ertugrul | Pekcan, Zeynep
In this study, it was aimed to evaluate the effectiveness of intratesticularly administered lidocaine and bupivacaine in castration in cats. 20 cats were divided into two groups regardless of breed and age. 80 microgram/kg medetomidine injection was administered for sedation. 4 mg/kg lidocaine or 1 mg/kg bupivacaine were injected intratesticularly in lidocaine and bupivacaine groups respectively. Castration was performed with routine methods. The reactions of the animals to the incision and the extraction of the funiculus spermaticus were recorded. After the operation, the animals were awakened by atipamezole. The pulse rate, respiratory rate and pain scores were evaluated for 6 hours at half-hour intervals. UNESP-Botucatu cat pain scale, Grimace cat pain scale and Glasgow cat pain scale were used to evaluate pain scores. A statistically significant difference was found between the groups in Grimace and Glasgow pain scores at the 150th min. and 180th min. postoperative evaluations (p<0.05). A statistically significant difference was found between the groups in Botucatu pain score at the 60th, 90th, 150th, 180th, 300th and 330th min. (p<0.05). No statistically significant difference was found in the pulse and respiration values (p>0.05). As a result, it was determined that bupivacaine should be preferred to lidocaine for long-lasting surgical procedures and postoperative analgesia due to its long duration of action.
Afficher plus [+] Moins [-]Deep Dive of Vitamin D among Respiratory Diseased and Healthy Calves Texte intégral
2023
Alıç Ural, Deniz
The requirement for vitamin D intake of dairy cattle has been better understood within the past few years and is well accepted by dairy producers and veterinary surgeons. In our country, as to the present author knowledge. In our country, as to the present author knowledge whether current recommendations and practices for supplemental vitamin D are meeting the needs of dairy cattle, however, is not well known. Circulatory vitamin D status of calves has been truly denoted via 25-hydroxyvitamin D [25(OH)D] metabolite levels in serum/plasma, with a concentration of 30 ng/mL proposed as a lower threshold for sufficiency. The present author was unaware of finding documented reports regarding vitamin d and its alterations among calves with respiratory distress. In the present study 16 calves (Group 1) were presenting clinical signs of respiratory problems and other 12 (Group 2) were selected as healthy control group. All necessary blood samples were taken were analyzed by Savant Fluorescent Immunoassay Device by use of Savant 25(OH)D test kits. Vitamin D (ng/mL) (X ̅ ± SE) among healthy calves and calves with pneumonia were detected as 63.21 ± 5.63 vs. 23.80 ± 2.75 with a statistical significance (p ≤0,001). In summary it should not be unwise to draw conclusion that pulmonary defence against respiratory infections should involve Vitamin D supplementation at appropriate dosages among calves.
Afficher plus [+] Moins [-]Fundamental Molecules in the Pathways and Regulation of Apoptosis Texte intégral
2023
Tutuncu, Serife | Ozdemir, Bengul
Apoptosis plays a role in many events such as the remodeling of cells starting from embryo formation, the elimination of faulty or dysfunctional cells, and is important for cellular balance. Bcl-2 family and various mediators, of which caspases are the basis, play a role in maintaining this balance in apoptosis. These mediators are important in the initiation, continuation and arrest of apoptosis pathways, and in the regulation of cellular balance. Damages to these mechanisms can cause undesirable results and diseases. In this review, we tried to give information about the pathways of apoptosis and the basic molecules involved in the regulation of apoptosis.
Afficher plus [+] Moins [-]Evolving customized non-polysaccharidase Mixture for effective utilization of sorghum Stover and groundnut haulm Texte intégral
2023
M.I. Yancy | C. Valli | V.Balakrishnan
A study was undertaken with an objective of evolving substrate specific customized non-starch polysaccharidase mixture for effective utilization of sorghum stover and groundnut haulm. Enzyme activity (IU/g) assay revealed that the activity of cellulose, xylanase and pectinase were 1368.33±23.30, 2294.16±65.17 and 930.83±52.22 respectively. All enzymes were found to have associate activity of other enzymes. An invitro trial was conducted to identify the concentration range of individual non-starch polysaccharidase enzymes required for inclusion to sorghum stover and groundnut haulm for maximum hydrolysis. A second invitro trial was conducted to identify the precise concentration of individual non-starch polysaccharidase enzymes required for inclusion to sorghum stover and groundnut haulm for maximum hydrolysis. The third in vitro trial was conducted to optimize the concentration of non-starch polysaccharidase mixture for inclusion to sorghum stover and groundnut haulm for maximum hydrolysis. The efficacy of customized non-starch polysaccharidase mixture was further evaluated at three levels (viz the selected level, 10% higher than selected level and 10% lower than the selected level)to arrive at their optimal level of inclusion separately for sorghum stover and groundnut haulm.
Afficher plus [+] Moins [-]Crosstalk between apoptosis and cytotoxic lymphocytes (CTLs) in the course of Lagovirus europaeus GI.1a infection in rabbits Texte intégral
2023
Niedźwiedzka-Rystwej Paulina | Deptuła Wiesław
Lagovirus europaeus is a single-stranded RNA virus causing an acute fatal disease in wild and domestic rabbits around the world. Studies have shown that the pivotal process impacting the immune response against the disease is apoptosis, registered mainly in hepatocytes and in peripheral blood, together with an increased number of cytotoxic lymphocytes (CTLs). It is known that cytotoxic lymphocytes can induce target cells to undergo apoptosis on the pseudoreceptor pathway, such apoptosis having been found in several acute and chronic viral infections. The study aimed to assess the crosstalk between the apoptosis of peripheral blood lymphocytes and CD8+ T lymphocytes (as CTLs) in rabbits infected with 6 Lagovirus europaeus GI.1a viruses.
Afficher plus [+] Moins [-]Detection of Babesia spp., Theileria spp., and Anaplasma ovis in Ornithodoros lahorensis from southern Xinjiang, China Texte intégral
2023
Li Siang | Zhang Liu | Zhou Peng | Li Zheng | Song Haonan | Song Yaping | Li Chuan | Xiangzheng Wanqi | Wu Junyuan
Ticks are blood-sucking arthropods that have negative economic impacts and can spread a variety of diseases through their bites. There are few reports on soft ticks (Acari: Argasidae) and tick-borne pathogens in southern Xinjiang, China. This investigation supplements the available information for this region and is concerned with an argasid tick, apicomplexan parasites of the Babesia and Theileria genera and a bacterium of the Anaplasma genus.
Afficher plus [+] Moins [-]Design, synthesis, and evaluation of peptides derived from L1 protein against bovine papillomavirus-1/2 identified along Mexico’s cattle export route Texte intégral
2023
García Coronado Paola Leonor | Romo Sáenz César Iván | Kawas Jorge R. | Zarate Triviño Diana Ginette | Ramos Zayas Yareellys | Elena Santana Krímskaya Silvia | Rodríguez Padilla Cristina | Armides Franco Molina Moisés
Bovine papillomatosis affects animal health and represents one of the greatest economic losses in the livestock sector. New control and prevention methods to protect the livestock industry from this disease are necessary. The aim of this study was to evaluate a candidate peptide for antibody production against bovine papillomavirus (BPV).
Afficher plus [+] Moins [-]