Characterization of Salmonella isolates from municipal sewage, patients, foods, and animals in Greece using antimicrobial susceptibility testing and pulsed field gel electrophoresis

Research (Published online: 24-03-2016)

3. Characterization of Salmonella isolates from municipal sewage, patients, foods, and animals in Greece using antimicrobial susceptibility testing and pulsed field gel electrophoresis - Theofilos Papadopoulos, Antonios Zdragas, Georgia Mandilara, Georgios Vafeas, Virginia Giantzi, Evanthia Petridou and Alkiviadis Vatopoulos

International Journal of One Health, 2: 12-18

  doi: 10.14202/IJOH.2016.12-18

Abstract

---

Aims: We aimed to compare Salmonella isolates from different sources using molecular and phenotypic methods, targeting better possibility of understanding the epidemiology of this organism in the Greek context with emphasis in municipal wastewater.

Materials and Methods: In this study, we used pulsed field gel electrophoresis (PFGE) in combination with antimicrobial susceptibility testing to analyze a total of 88 Salmonella Enterica isolates from municipal sewage (n=25), humans (n=36), animals (n=24), and foods (n=3) in Greece.

Results: The higher resistance rates were found to the following antimicrobials: streptomycin (59.1%), tetracycline (47.7%), nalidixic acid (46.6%), ampicillin (37.5%), and oxolinic acid (35.2%). Resistance to ciprofloxacin was not observed; 22 isolates (25%) were sensitive to all 9 antimicrobials, 36%, 25% and 12% of human, animal and wastewater origin, respectively, showing a significant difference. Salmonella ser. Hadar was the serovar with the highest resistance rates followed by Salmonella ser. Anatum and Salmonellaser. Typhimurium; Salmonella ser. Infantis strains were almost pansusceptible. Cluster analysis did not reveal close genetic relationship between human animal food and wastewater strains belonging to the same serovars. In most of the cases, distinct clusters were observed between human and non-human isolates indicating diversity and no epidemiological connection.

Conclusion: This study indicates that municipal wastewater would be of interest to further monitor the community’s prevalence of subclinical or non-reported S. Enterica infections.

Keywords: Salmonella, wastewater, sewage, PFGE, antimicrobial resistance.

Prevalence and multidrug-resistant pattern of Salmonella from the eggs and egg-storing trays of retail markets of Bangladesh

Research (Published online: 24-03-2016)

2. Prevalence and multidrug-resistant pattern of Salmonella from the eggs and egg-storing trays of retail markets of Bangladesh - Tareq Mahmud, Mohammad Mahmudul Hassan, Mahabub Alam, Md Mamun Khan, Md Saiful Bari and Ariful Islam

International Journal of One Health, 2: 7-11

  doi: 10.14202/IJOH.2016.7-11

Abstract

---

Aim: Salmonellosis is one of the most common and widely distributed foodborne illnesses in human, and multidrugresistance of Salmonella spp. has increased in developing countries with the indiscriminate use of antibiotics in the poultry production system. A cross-sectional study was conducted on randomly selected retail markets of Chittagong City Corporation to determine the prevalence and antimicrobial resistance pattern of Salmonella isolated from commercial layer eggs, eggshell surface, and egg-storing trays.

Materials and Methods: Chicken eggs, egg surface, and egg-storing trays samples from the retail markets were collected for isolating Salmonella spp. (bacteriological culture methods) followed by antimicrobial susceptibility testing (disc diffusion method) against Salmonella isolates during the period from July to December 2013.

Results: Out of the 310 layer eggs, egg surface, and egg-storing trays samples, the highest prevalence ofSalmonella spp. was found in eggs trays (57.15%) and the lowest (13.33%) in eggs and the prevalence differed significantly (p<0.01). On the other hand, the prevalence was higher (45%) in samples of Pahartali bazar and lower (31.43%) in samples of Bohderhat bazar but the variation among the sites was not varied significantly (p>0.05). Isolated Salmonella was tested for resistance to eight different antimicrobial agents, using disc diffusion method. Among eight antimicrobial tested (n=111), 100% resistance were found to ampicillin and amoxicillin followed by erythromycin (60-100%), tetracycline (72-93%), ciprofloxacin (22-66%), colistin (27-66%), enrofloxacin (42-54%), and pefloxacin 23.07% across the study sites. Ciprofloxacin remained sensitive in 40.9% cases and, pefloxacin and colistin appeared to be almost sensitive (61-72%) against Salmonella isolates at studied areas. Salmonella isolates showed multidrug-resistance pattern up to five of the eight antimicrobials tested.

Conclusion: It can be said that the rational use of antibiotics needs to be adopted in commercial poultry farming system of Bangladesh to prevent the emergence of drug-resistance Salmonella to protect the public health consequences.

Keywords: antimicrobial, public health, prevalence, resistance, Salmonella.

Antigenic evidence of bluetongue virus from small ruminant population of two different geographical regions of Odisha, India

Research (Published online: 21-03-2016)

14. Antigenic evidence of bluetongue virus from small ruminant population of two different geographical regions of Odisha, India -Shaswati Subhadarsini Pany, Sanchay Kumar Biswas, Karam Chand, Nihar Nalini Mohanty, Laxmi Narayan Sarangi, Bimalendu Mondal and Hemant Kumar Panda

Veterinary World, 9(3): 304-307

   doi: 10.14202/vetworld.2016.304-307

Abstract

---

Aim: The aim of the present study was to carry out antigenic detection of bluetongue virus (BTV) among the small ruminant population of two different geographical regions of Odisha (coastal and central) using recombinant VP7 (r-VP-7) based sandwich enzyme-linked immunosorbent assay (s-ELISA).

Materials and Methods: Blood samples (n=274) were collected from two different geographical pockets of Odisha, which covered mostly the coastal and central regions. Of the total samples under study 185 were from goat and 89 were from sheep. The blood samples were tested for the presence of BTV antigen by r-VP7 based s-ELISA.

Results: r-VP-7 s-ELISA detected BTV antigen in 52.43% and 44.94% of the goat and sheep population under study, respectively. This study highlights the antigenic persistence of BTV in the state for the 1st time.

Conclusion: This high antigenic presence in both sheep and goat population suggests an alarming BTV infection in field conditions which warrants more systematic study directed toward isolation and characterization studies as well as the implementation of control strategy for BT in Odisha.

Keywords: bluetongue, goat, Odisha, sheep.

Effect of different antioxidant additives in semen diluent on cryopreservability (−196°C) of buffalo semen

Research (Published online: 20-03-2016)

13. Effect of different antioxidant additives in semen diluent on cryopreservability (−196°C) of buffalo semen - Hardik A. Patel, G. M. Siddiquee, Dinesh V. Chaudhari and Vishal S. Suthar

Veterinary World, 9(3): 299-303

   doi: 10.14202/vetworld.2016.299-303

Abstract

---

Aim: The aim of this study was to evaluate the effect of different antioxidant additives in standard tris-fructose-egg yolkglycerol (TFYG) extender on the cryopreservability of buffalo semen.

Materials and Methods: Semen collection using artificial vagina, twice weekly for 5 weeks from three pedigreed health breeding bulls of Mehsani breed, aged between 6 and 8 years. Immediately after initial evaluation all 30 qualifying ejaculates (10/bull) were split into three aliquots and diluted at 34°C keeping the concentration of 100 million spermatozoa/ml with standard TFYG extender as control and TFYG having two antioxidant additives - Cysteine HCl at 1 mg/ml and ascorbic acid at 0.2 mg/ml to study their comparative performance. Semen filled in French Mini straws using IS-4 system and gradually cooled to 4°C and equilibrated for 4 h in cold handing cabinet. After completion of equilibration, straws were cryopreserved in LN2 by Programmable Bio-freezer. Semen was examined at post-dilution, post-equilibration, and post-thaw stages for sperm quality parameters, and at each stage plasma was separated for enzymatic analysis of aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and alkaline phosphatase (AKP).

Results: The mean percentage of sperms in TFYG, TFYG + cysteine HCl and TFYG + ascorbic acid diluents at postthaw stage in terms of progressive motility (52.83±0.52, 57.83±0.52, 57.83±0.52), livability (78.70±0.21, 82.33±0.23, 81.73±0.22), and abnormality (5.43±0.21, 5.03±0.17, 5.23±0.18) varied significantly (p<0.05) between control TFYG and TFYG having antioxidant additives. The mean U/L activities of AST (78.70±0.47, 72.80±0.48, 73.30±0.54), LDH (172.70±0.41, 155.78±0.42, 156.33±0.41), and AKP (103.61±0.34, 90.20±0.34, 91.03±0.34) in semen diluted with TFYG, TFYG + cysteine HCl and TFYG + ascorbic acid diluents at post-thaw stage, respectively, which showed significantly (p<0.05) higher leakage of enzymes in control TFYG than TFYG incorporated with additives.

Conclusion: Incorporation of antioxidant additives such as cysteine HCl and ascorbic acid in standard TFYG diluents improves sperm quality parameters, reduces enzyme leakage, and ultimately advances cryopreservability of buffalo semen.

Keywords: antioxidants, cryopreservation, diluent, egg yolk, enzyme, semen.

Estimates of genetic parameters for fat yield in Murrah buffaloes

Research (Published online: 19-03-2016)

12. Estimates of genetic parameters for fat yield in Murrah buffaloes - Manoj Kumar, Vikas Vohra, Poonam Ratwan, Jamuna Valsalan, C. S. Patiland A. K. Chakravarty

Veterinary World, 9(3): 295-298

   doi: 10.14202/vetworld.2016.295-298

Abstract

---

Aim: The present study was performed to investigate the effect of genetic and non-genetic factors affecting milk fat yield and to estimate genetic parameters of monthly test day fat yields (MTDFY) and lactation 305-day fat yield (L305FY) in Murrah buffaloes.

Materials and Methods: The data on total of 10381 MTDFY records comprising the first four lactations of 470 Murrah buffaloes calved from 1993 to 2014 were assessed. These buffaloes were sired by 75 bulls maintained in an organized farm at ICAR-National Dairy Research Institute, Karnal. Least squares maximum likelihood program was used to estimate genetic and non-genetic parameters. Heritability estimates were obtained using paternal half-sib correlation method. Genetic and phenotypic correlations among MTDFY, and 305-day fat yield were calculated from the analysis of variance and covariance matrix among sire groups.

Results: The overall least squares mean of L305FY was found to be 175.74±4.12 kg. The least squares mean of overall MTDFY ranged from 3.33±0.14 kg (TD-11) to 7.06±0.17 kg (TD-3). The h² estimate of L305FY was found to be 0.33±0.16 in this study. The estimates of phenotypic and genetic correlations between 305-day fat yield and different MTDFY ranged from 0.32 to 0.48 and 0.51 to 0.99, respectively.

Conclusions: In this study, all the genetic and non-genetic factors except age at the first calving group, significantly affected the traits under study. The estimates of phenotypic and genetic correlations of MTDFY with 305-day fat yield was generally higher in the MTDFY-5 of lactation suggesting that this TD yields could be used as the selection criteria for early evaluation and selection of Murrah buffaloes.

Keywords: genetic factors, Murrah buffalo, non-genetic factors, test-day fat yields.

Effect of in ovo supplementation of nano forms of zinc, copper, and selenium on post-hatch performance of broiler chicken

Research (Published online: 19-03-2016)

11. Effect of in ovo supplementation of nano forms of zinc, copper, and selenium on post-hatch performance of broiler chicken - P. Patric Joshua, C. Valli and V. Balakrishnan

Veterinary World, 9(3): 287-294

   doi: 10.14202/vetworld.2016.287-294

Abstract

---

Background and Aim: Nanoparticles can bypass conventional physiological ways of nutrient distribution and transport across tissue and cell membranes, as well as protect compounds against destruction prior to reaching their targets. In ovo administration of nanoparticles, may be seen as a new method of nano-nutrition, providing embryos with an additional quantity of nutrients. The aim of the study is to examine the effect of in ovo supplementation of nano forms of zinc, copper and selenium on the hatchability and post hatch performance of broiler chicken.

Materials and Methods: Nano form of zinc at 20, 40, 60 and 80 μg/egg, nano form of copper at 4, 8, 12 and 16 μg/egg and nano form of selenium at 0.075, 0.15, 0.225 and 0.3 μg/egg were in ovo supplemented (18th day incubation, amniotic route) in fertile broiler eggs. Control group in ovo fed with normal saline alone was also maintained. Each treatment had thirty replicates. Parameters such as hatchability, hatch weight and post hatch performance were studied.

Results: In ovo feeding of nano minerals were not harmful to the developing embryo and did not influence the hatchability. Significantly (p<0.05) best feed efficiency for nano forms of zinc (2.16), copper (2.46) and selenium (2.51) were observed, when 40, 4 and 0.225 μg/egg respectively were in ovo supplemented. Except in nano form of copper at 12 μg per egg which had significantly (p<0.05) highest breast muscle percentage there was no distinct trend to indicate that dressing percentage or breast muscle yield was influenced in other treatments.

Conclusion: Nano forms of zinc, copper and selenium can be prepared at laboratory conditions. In ovo feeding of nano forms of zinc, copper and selenium at 18th day of incubation through amniotic route does not harm the developing embryo, does not affect hatchability.

Keywords: hatchability, hatch weight, in ovo feeding, nanoparticles, and post hatch performance.

Evaluation of the effects of the powder of Capsicum frutescens on glycemia in growing rabbits

Research (Published online: 16-03-2016)

10. Evaluation of the effects of the powder of Capsicum frutescens on glycemia in growing rabbits - Tossou Jacques Dougnon and Messanvi Gbeassor

Veterinary World, 9(3): 281-286

   doi: 10.14202/vetworld.2016.281-286

Abstract

---

Aim: The present study aims to evaluate zootechnic parameters and blood sugar in rabbits submitted to diets containing different levels of pepper (Capsicum frutescens).

Materials and Methods: To this end, 30 rabbits weighing on average 1252±35 g at the beginning of the experiment were subjected to five rations with three repetitions for 56 days: The food R0 (or control) which is floury provender contains 0% of C. frutescens; R5, R10, R15, and R20 provender containing, respectively, 0.5%, 1%, 1.5%, and 2% of C. frutescens fruits’ powder. Rabbits consumed on average from 75.47 to 80.97 g dry matter.

Results: Digestibility ranged from 52.39% to 61.01%. The average daily gain and feed consumption index were similar for all diets. Blood glucose was amended by the various servings is 0.98 g/L and 0.88 g/L, respectively, for doses.

Conclusion: It appears from this study that rabbits consumed well diets containing C. frutescens. However, C. frutescens’ effect on the growth performances of rabbits is not noticeable. Furthers experiments will be useful to evaluate C. frutescens’ mechanism of action on blood sugar.

Keywords: blood sugar, Capsicum frutescens, consumption index, rabbit.