Veterinaria Mexico最新文献

{"title":"Use of endodontic paper points and Schirmer strips for measurement of tear flow in red-lored parrots (Amazona autumnalis)","authors":"René Oswaldo Silva-Castillo, Samuel Flores-Ceballos, A. Ducoing-Watty, Ricardo Itzcóatl Maldonado-Reséndiz","doi":"10.22201/FMVZ.24486760E.2019.1.624","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2019.1.624","url":null,"abstract":"Ocular diseases are sub-diagnosed in bird species, partly because of limited diagnostic methods and lack of reference data. Placement of Schirmer tear test strips in the bottom of the conjunctival sac of birds for tear flow measurement can prove to be difficult, whereas paper tips commonly used for dental procedures may be easier to use, due to a more adequate size and shape. Hence, the aim of this study was to assess and compare tear flow values, using ABC Dental® # 30 color paper tips and TearFloTM Test strips in Red-lored Parrots (Amazona autumnalis) (n = 26). Captive birds of undetermined sex were housed in groups under similar environmental conditions and fed the same diet. All animals were deemed healthy through remote and physical examinations. Average tear flow values of 0.6365 ± 0.032 cm/min and 0.5942 ± 0.032 cm/min were obtained with the Schirmer strips test and the endodontic tips respectively. Lack of difference in observed values between measurement techniques (p = 0.3629) indicates that endodontic tips may be a good alternative for tear flow assessment in Red-lored parrots. In addition, endodontic tips are more cost effective and may be less invasive. This study stresses the need to establish species specific ophthalmic reference values for clinical practice in birds, since differences have been reported even in specimens within the same genus.Figure 1. Measurement of tear flow in Red-lored parrots using TearFloTM Test Strips","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.22201/FMVZ.24486760E.2019.1.624","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44083468","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}

{"title":"Can C-phycocyanin be used as a sperm protector?","authors":"E. G. Antonio Marcos, O. M. Monroy Hermosillo, E. Cortés Barberena, E. Rodríguez Tobón, J. R. Rivera Martínez, Edith Arenas Ríos","doi":"10.22201/FMVZ.24486760E.2018.4.642","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2018.4.642","url":null,"abstract":"C-phycocyanin (C-PC) is a biocompound extracted from Arthrospira maxima. It is a chromophore-protein complex, with antioxidant properties. Its ability to prevent oxidative stress allows for diverse medical applications. This study evaluates the use of C-PC as a protein supplement and an antioxidant for in-vitro sperm preservation in a short-term extender. Viability, progressive motility, DNA damage and percentage of reactive oxygen species where assessed in Swine (Sus scrofa domesticus) sperm stored for up to 72 hours at 4 °C. Treatments with C-PC had the following concentrations: 0, 34.5, 69, 138 and 207 μg mL−1. Progressive motility and percentage of sperm with undamaged DNA were unchanged (20%) after storage for 48 hours using the 138 μg mL C-PC concentration−1.","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.22201/FMVZ.24486760E.2018.4.642","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41777026","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}

{"title":"Addition of calcium propionate to finishing lamb diets","authors":"J. A. Martínez-Aispuro, M. T. Sánchez-Torres, G. Mendoza-Martínez, J. L. Mora, J. L. Figueroa-Velasco, M. Ayala-Monter, M. M. Crosby-Galván","doi":"10.22201/FMVZ.24486760E.2018.4.470","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2018.4.470","url":null,"abstract":"Calcium (Ca) propionate can be added to ruminant diets as a glucogenic substrate. However, due to its hypophagic effect, it is necessary to establish the optimal dose that can be used to replace grains in finishing diets for lambs. Therefore, the objective of this study was to assess the effect of four concentrations of Ca propionate in lamb diets on productive performance and rumen fermentation. Thirty two Hampshire x Suffolk lambs (23.82 ± 0.40 kg initial body weight), distributed in a completely randomized design, were given a diet with four concentrations of Ca propionate (g kg−1): 0, 10, 20 or 30 g, for 42 days. The results were tested for linear or quadratic responses. The final weight, average daily gain and feed: gain ratio showed quadratic responses (P ≤ 0.01). The optimal dose was established at 13.77 g kg−1 DM. Addition of Ca propionate did not affect variables related to rumen fermentation (pH, total volatile fatty acids, acetate, butyrate or rumen ammonia-N; P ≥ 0.05) . Nonetheless, glucose and propionate concentrations showed a quadratic response (P ≤ 0.05). The highest concentrations of propionate in rumen were observed with 15.14 g kg−1 DM. Results indicate that Ca propionate can be included in a dose of up to 13.77 g kg−1 DM in feedlot rations, to attain best lamb performance.","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.22201/FMVZ.24486760E.2018.4.470","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43561767","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}

{"title":"Effects of an allostatic modulator on the behavior and blood indicators of young bulls after transport","authors":"M. S. R. Lozano, R. D. M. Medina, Karla Reyes Mayorga, María Elena Rubio García, T. Ngapo, Karen F. Mancera, Francisco Galindo Maldonado","doi":"10.22201/FMVZ.24486760E.2018.4.539","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2018.4.539","url":null,"abstract":"An allostatic modulator (AM) composed of ascorbic acid, acetylsalicylic acid, sodium chloride and potassium chloride was dissolved in the drinking water of three groups of young bulls (n = 7) and administered to them for 7 d after 20.42 h of transport (Control (C) = 0 g/head/d, G2 = 30 g/head/d, G3 = 60 g/head/d). The effects of the AM on behavior and blood cellular and biochemical components were measured. G3 animals spent less time lying and more time standing than C animals (P = 0.001 and P = 0.02, respectively), indicating less fatigue. G3 bulls presented a lower frequency of agonistic interactions than those in the G2 group (P = 0.001), suggesting a possible effect on aggression that warrants further evaluation. The AM affected creatinine kinase (CK) activity in the G2 group compared to the C group (P = 0.04), suggesting an effect of AM components that has not been previously reported. Cortisol levels remained unaffected by AM supplementation (P = 0.55). These preliminary findings suggest an effect of supplementing cattle with an AM after long-haul transport.","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42649038","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}

{"title":"Effect of resveratrol on the in vitro maturation of ovine (Ovis aries) oocytes and the subsequent development of handmade cloned embryos","authors":"José Luis Martínez-Ibarra, Eugenia Adriana Espinoza-Mendoza, R. Rangel-Santos, D. A. Ambríz-García, M. C. Navarro-Maldonado","doi":"10.22201/FMVZ.24486760E.2018.4.491","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2018.4.491","url":null,"abstract":"The effect of resveratrol on the in vitro maturation (IVM) of ovine (Ovis aries) oocytes and the development of handmade cloned embryos was evaluated. The nuclear maturation and reactive oxygen species (ROS) levels in the oocytes, as well as the early development and morphological cloned embryo quality, were evaluated under different resveratrol concentrations (0, 0.5, 2 and 5 μM). After IVM, no significant difference was observed in the maturation rate of oocytes treated with 0.5 μM (81.3 %) and 2 μM (72 %) resveratrol compared to that of the control group (0 μM) (74.2 %), but the rate significantly decreased at 5 μM (56 %) (p < 0.05). When the oocyte ROS levels were determined, no significant differences among the groups were observed (p > 0.05). For cloned embryo development, the embryos obtained from the oocytes treated with 0.5 μM resveratrol showed higher (p < 0.05) compacted morula rates (10.7 %) compared to the embryos obtained from the oocytes treated with 0, 2 and 5 μM (6.2, 0 and 0 %, respectively). Regarding embryo morphological quality, the embryos from the oocytes treated with 0.5 μM resveratrol showed a lower rate of poor quality morulae (4.7 %) in comparison to those treated with 0, 2 and 5 μM (23.8, 23.3 and 33.3 %, respectively) (p < 0.05). In conclusion, resveratrol showed no significant improvement on the IVM or ROS levels in domestic ovine oocytes. However, treatment with 0.5 μM resveratrol during IVM improved embryo quality and promoted morulae compaction of Ovis aries handmade cloned embryos.Figure 3. Different developmental stages of the HMC sheep embryos cultured in the WOW system. Cleaved embryos (a-d), 8‒16 blastomere embryos (e-h), morulae (i-l) and compact morulae (m-p) (200X).","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.22201/FMVZ.24486760E.2018.4.491","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42316531","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}

{"title":"Effect of phytase dose on productive performance and bone status of layers fed with graded levels of digestible lysine","authors":"I. Y. Martinez Rojas, C. López Coello, E. Ávila González, J. Arce Menocal, G. Gomes","doi":"10.22201/FMVZ.24486760E.2018.3.564","DOIUrl":"https://doi.org/10.22201/FMVZ.24486760E.2018.3.564","url":null,"abstract":"Exogenous phytase could influence dietary protein availability by variation in using dose. The objective of the present study was to determine if incremental dosing of an evolved E.coli 6-phytase would lead to improvements in lysine availability through evaluating performance and bone status in Bovans White layers. A total of 182 layers were placed in individual cages and distributed to 13 treatments: a 3×4 factorial arrangement with three levels of digestible lysine (dLys - 0.67, 0.77, and 0.87 %) and four doses of phytase (0, 300, 1 200, and 4 800 FTU/kg) in 0.12 % available P (avP) diets. Additionally, one phytase-free control treatment was included with 0.25 % avP and 0.87 % dLys. Productive parameters were recorded for 25 weeks, from 39 week-old. At the end, abdominal fat deposition and the tibia were sampled; in bone was determined breaking strength and bone ash. Layers fed 1 200 FTU/kg phytase increased egg production percentage (F3,169 = 2.01, p = 0.019), abdominal fat deposition (F3,169 = 2.52, p = 0.059), bone breaking strength (F3,169 = 4.29, p = 0.006) and bone ash weight (F3,169 = 3.62, p = 0.015) compared with non-phytase inclusion. Furthermore, 1 200 FTU/kg phytase decreased incidence of broken eggs and soft-shell eggs (F3,169 = 2.9, p = 0.037). Phytase and dLys levels influenced egg mass and bone ash concentration (F12,169 = 1.86, p = 0.043). FCR and body weight loss was reduced with phytase inclusion (respectively: F12,169 = 2.43, p = 0.045, and F12,169 = 2.24, p = 0.001). Phytase-free control diet increased egg weight (F12,169 = 3.70, p < 0.068), but gave greater BW loss (F12,169 = 17.79, p < 0.001), less abdominal fat content (F12,169 = 5.85, p < 0.017), and no effect on other variables (p > 0.07). In conclusion, 1 200 FTU/kg of phytase improved productive performance and preserved body weight and bone status, without equivalence of phytase inclusion for dLys level, even with higher doses.Figure A. Response of egg marketable mass","PeriodicalId":56044,"journal":{"name":"Veterinaria Mexico","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2018-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.22201/FMVZ.24486760E.2018.3.564","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44030761","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}