Prevalence of Clostridium perfringens toxin genotypes in enterotoxemia suspected sheep flocks of Andhra Pradesh

Research (Published online: 26-12-2014)

19. Prevalence of Clostridium perfringens toxin genotypes in enterotoxemia suspected sheep flocks of Andhra Pradesh - N. Vinod Kumar, D. Sreenivasulu and Y. N. Reddy

Veterinary World, 7(12): 1132-1136

   doi: 10.14202/vetworld.2014.1132-1136

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Abstract

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Aim: To identify the Clostridium perfringens toxin genotypes prevailing in enterotoxemia suspected sheep flocks in Andhra Pradesh by using multiplex PCR.

Materials and Methods: Intestinal scrapings were collected from lambs below three months of age from flocks with similar management from different Districts of Andhra Pradesh, in India. A total of 208 samples were collected with 140 from enterotoxemia suspected flocks and 68 from healthy flocks. Following processing and culture of the samples, colonies were identified by morphological and biochemical tests. All the clostridial isolates were analyzed by multiplex PCR.

Results: C. pefringens were isolated from 97 out of 140 enterotoxemia suspected flocks (69.29%) and 27 out of 68 healthy flocks (39.71 %). Genotyping of the 97 iolates by multiplex PCR from enterotoxemia suspected flocks indicated C. perfringens type A, C and D 67.01% (65 out of 97); 11.34% (11 out of 97) and 21.65% (21 out of 97) respectively. Isolates from healthy flocks indicated the presence of type A and D 92.59% (25 out of 27) and 7.40% (2 out of 27) respectively. Number of isolates from enterotoxaemia suspected flocks were significantly high (P<0.001) than healthy flocks. Type A is found to be predominant in both enterotoxemia suspected and healthy flocks (67.01% and 92.59%).

Conclusions: Prevalence of C. perfringens type C was reported for the first time in India. Clostridium perfringens type D and type C were found to be the major causative types for enterotoxemia.

Keywords: Clostridium perfringes, enterotoxaemia, lamb mortality, multiplex PCR, Toxin typing.

Antioxidative capacity of vitamin E, vitamin C and their combination in cryopreserved Bhadavari bull semen

Research (Published online: 26-12-2014)

18. Antioxidative capacity of vitamin E, vitamin C and their combination in cryopreserved Bhadavari bull semen - Pawan Kumar Mittal, Mukul Anand, A. K. Madan, S. Yadav and J. Kumar

Veterinary World, 7(12): 1127-1131

   doi: 10.14202/vetworld.2014.1127-1131

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Abstract

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Aim: The aim was to determine the antioxidative capacity of vitamin E, vitamin C and their combination (vitamin E+C) on standard semen parameters i.e., mortality, percent live sperms, percent abnormal sperms and acrosomal integrity in cryopreserved Bhadawari bull semen.

Materials and Methods: Ejaculates collected from four Bhadawari bulls were evaluated and later pooled at 37°C. Pooled semen sample was divided into four equal parts viz. T-1,T-2,T-3 and C. The divided samples were diluted with a Trisbased extender containing the antioxidants vitamin E (5 mM) (T-1) vitamin C (5 mM) (T-2), vitamin  E+C combination (5 mM+5 mM) (T-3) and extender containing no antioxidants (control, C). The diluted samples with different antioxidant concentration were cooled to 5°C, frozen in 0.25-ml French straws and stored in liquid nitrogen (−196°C). Frozen straws were thawed individually at 37°C for 20 s in a water bath for evaluation.

Results: Semen extender supplementation with vitamin E (5 mM), vitamin C (5 mM) and vitamin E+C combination caused significant (p<0.01) increases in the seminal attributes while significant (p<0.01) decreases was observed in percent abnormal sperms in comparison to control group indicating that supplementation of antioxidant in form of vitamin and their combination improves the quality of post thaw semen. Significantly higher values of semen parameters were observed in the T-3 followed by T-1 and T-2 indicating the anti-oxidative capacity of different supplements utilized during the study.

Conclusion: The results of present investigation concluded that combination of vitamin E+C has most profound effect in protecting sperms against reactive oxygen species production and cold shock when compared to vitamin E and vitamin C supplemented alone in the extender for semen dilution utilized for cryopreservation.

Keywords: antioxidants, Bhadawari bull, cryopreservation, semen, vitamin E, vitamin C.

Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials

Research (Published online: 23-12-2014)

17. Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials - A. J. Parmar, S.K.Tyagi, V. S. Dabas, J. N. Mistry, S. K. Jhala, D. N. Suthar, R. H. Bhatt, D. V. Pansuria and I. M. Bhatti

Veterinary World, 7(12): 1123-1126

   doi: 10.14202/vetworld.2014.1123-1126

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Abstract

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Aim: To assess the physical and mechanical properties of plaster of Paris (POP) bandage cast used as a splinting and casting materials.

Materials and Methods: POP casts were divided into three Groups A, B and C with 2, 3 and 8 layer for POP bandage, respectively (n=6 in each group). Handling characters, technical easiness or difficulties, setting time, weight, diameter and thickness of the casts were recorded for different groups. The casts were mounted on universal testing machine and axial load was applied @ 10 mm/min until failure. The load deflection graphs were plotted. The maximum force at which failure of the casts occurred was recorded. Stress, strain, modulus of elasticity (MOE) and stiffness of casts were calculated.

Result: Construction of POP bandage cast was messy and required 45-60 min for hardening. 8 layer POP cast was comparatively heavier in weight and thicker in cross section than 3 layer cast followed by 2 layer cast. Under axial compression, the load bearing capacity of 8 layer POP casts was more than 2 and 3 layer cast.

Conclusion: The values of load bearing capacity, stress, stiffness and MOE of cast were the highest for 8 layer POP cast followed by 2 and 3 layer cast. Use if splints with POP cast is recommended due to its poor mechanical properties.

Keywords: axial load, cast, compression, physical properties, plaster of Paris bandage.

Semen quality parameters, their inter-relationship and post-washing sperm attributes of Rhode Island Red roosters

Research (Published online: 23-12-2014)

16. Semen quality parameters, their inter-relationship and post-washing sperm attributes of Rhode Island Red roosters - R. Richard Churchil, P. Ezhil Praveena and Deepak Sharma

Veterinary World, 7(12): 1117-1122

   doi: 10.14202/vetworld.2014.1117-1122

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Abstract

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Aim: The present experiments were conducted (a) to evaluate the semen attributes of older Rhode Island Red (RIR) roosters and the inter-trait relationships, (b) to test sperm washing and storage duration suitable for gene transfer experiments.

Materials and Methods: The semen characteristics of older RIR roosters were studied, and Pearson correlation analysis was done to demonstrate the inter-trait relationships. Progressive motility and percent live sperms were tested at different post-washing intervals to identify suitable sperm processing conditions for gene transfer experiments.

Results: The volume, appearance score, initial motility, sperm count and percent live and abnormal spermatozoa were 0.38 ml, 3.58, 80.34%, 4.03 × 109 sperms/ml, 83.18% and 4.52% respectively. Positive correlation was observed among appearance score, motility, live sperm and sperm count. Semen volume is negatively correlated with all the other characters except live sperms, whereas, percent abnormal sperms negatively associated with all the other traits. Significant (p<0.05) decrease in terms of motility and live sperm was recorded at 60 min post-washing.

Conclusion: The semen attributes of RIR roosters compares well with the other breeds of chicken. The appearance score can be used to assess fertility where microscopic evaluation facilities are limited. The sperm washing protocol tested in the experiment is suitable for gene transfer experiments.

Keywords: correlation, live sperm, post-washing motility, Rhode Island Red roosters, semen attributes.

Prevalence of drug-resistant gastrointestinal nematodes in an organized sheep farm

Research (Published online: 23-12-2014)

15. Prevalence of drug-resistant gastrointestinal nematodes in an organized sheep farm - Ambalathaduvar Meenakshisundaram, Thavasi Anna and Jayagopal Harikrishnan

Veterinary World, 7(12): 1113-1116

   doi: 10.14202/vetworld.2014.1113-1116

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Abstract

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Aim: The present study was aimed to determine the resistance against albendazole, fenbendazole, levamisole and closantel in gastrointestinal (GI) nematodes of sheep.

Introduction: Anthelmintics are used traditionally as an integral part of helminthic control strategies for grazing livestock to prevent production losses from parasitic infections. The continuous and indiscriminate use of the same anthelmintics over years together as the sole means of control are now failing due to the emergence of resistance strains of helminths. Resistance to the commonly used anthelmintics in GI nematodes of sheep has become an increasingly widespread problem throughout the world.

Materials and Methods: Fifty-five naturally infected Madras Red lambs of 6-12 months of age were selected and distributed randomly into five treatment groups of 11 animals each. Four groups were treated orally with albendazole (5 mg/kg), fenbendazole (7 mg/kg), levamisole (7.5 mg/kg) and closantel (10 mg/kg) respectively, whereas the fifth group served as untreated control. Fecal samples were collected per rectum of each lamb just prior to treatment (pre-treatment) and on 7, 14, 21 and 28 days post-treatment. The anthelmintic resistance was evaluated by in vivo fecal egg count reduction test (FECRT), post-treatment larval culture and in vitro egg hatch assay.

Results: In the FECRT, albendazole reduced the faecal egg count by 86.50%, 84.81%, 85.28% and 84.47% respectively for 4 weeks after treatment. Fecal egg count reduction using fenbendazole was 92.64, 93.04, 90.80 and 90.06% respectively for 4 weeks after treatment. The percent efficacy for levamisole and closantel was more than 95%. The post-treatment larval culture contained only Haemonchus contortus. In the in vitro egg hatch assay, the ED50 value for benzimidazole was 0.299 μg albendazole/ml and levamisole showed an ED50 value of 0.283 μg/ml.

Conclusion: Our study confirmed the resistance of H. contortus to benzimidazole in sheep.

Keywords: benzimidazole resistance, egg hatch assay, fecal egg count reduction test, gastrointestinal nematodes, sheep.

Comparative efficacy of crystalloid and colloid-crystalloid combination for the management of hemorrhagic gastroenteritis in dogs

Research (Published online: 23-12-2014)

14. Comparative efficacy of crystalloid and colloid-crystalloid combination for the management of hemorrhagic gastroenteritis in dogs -Chandreyee Sen, Ashwani K. Sharma and P. S. Dhaliwal

Veterinary World, 7(12): 1108-1112

   doi: 10.14202/vetworld.2014.1108-1112

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Abstract

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Aim: In the present study, a therapeutic trial was conducted to assess comparative efficacy of crystalloid plus colloid and crystalloid intravenous infusions alone as fluid therapy in dogs suffering from hemorrhagic gastroenteritis (HGE).

Materials and Methods: 20 dogs manifesting HGE, presented at Teaching Veterinary Clinical Services Complex, Ludhiana, Punjab, were selected randomly for the trial. All of them were observed to suffer from moderate dehydration on clinical examination. Crystalloids 5% DNS and RL were used in combination with polygelin 3.5% colloidal solution in the first group (Combination I) and in the second group, the afore-said crystalloids (Combination II) were used, both groups consisting of 10 cases each. Antibiotics and symptomatic treatment were same for all the 20 cases. The outcome of both treatment groups was evaluated on hemato-biochemical parameters, before and after administration of the therapies and compared statistically within and between the two groups. Hemato-biochemical parameters of eight clinically healthy animals were considered as control for comparison.

Result: On hemato-biochemical examination, significant alterations were observed in leucogram, platelet and serum globulin concentration after the treatment in the first group as compared to before treatment values. In the second group, mean hemoglobin varied significantly after the treatment. After therapies were administered, significant difference in serum globulin level and albumin: Globulin was found in between the treatment groups (Combination I and Combination II). Clinical recovery was faster in the first group than the second group of animals.

Conclusion: On hemodynamic and laboratory data, efficacies of both the fluid therapies were equivocal. Colloidal solutions may hasten recovery in small animals suffering from gastrointestinal crisis.

Keywords: colloid, crystalloid, dog, hemato-biochemical studies, hemorrhagic-gastroenteritis.

Body linear traits for identifying prolific goats

Research (Published online: 18-12-2014)

13. Body linear traits for identifying prolific goats - Avijit Haldar, Prasenjit Pal, Debasis Majumdar, Chanchal K. Biswas, Saurabh Ghosh and Subhransu Pan

Veterinary World, 7(12): 1103-1107

   doi: 10.14202/vetworld.2014.1103-1107

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Abstract

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Aim: The present study was conducted on prolific goat breed to identify body linear type traits that might be associated with prolificacy trait in goats.

Materials and Methods: Two-stage stratified random sample survey based data were collected from 1427 non-pregnant goats with the history of single, twin and triplet litter sizes (LZ) between January 2008 to February 2011 for 3 years in 68 villages located in East and North East India. Data on sixteen body linear traits were analyzed using logistic regression model to do the step-wise selection for identifying the body linear traits that could determine LZ. An average value for each identified body linear trait was determined for classifying the goats into three categories: Goats having the history of single LZ, goats having the history of twin LZ and goats having the history of triplet LZ.

Results: The LZ proportions for single, twin and triplet, were 29.50, 59.14 and 11.36%, respectively, with the prolificacy rate of 181.85% in Indian Black Bengal goats. A total of eight body linear traits that could determine LZ in prolific goats were identified. Heart girth (HG) measurement (>60.90 cm), paunch girth (PG) (>70.22 cm), wither height (WH) (>49.75 cm), neck length (>21.45 cm), ear length (>12.80 cm) and distance between trochanter major (DTM) bones (>12.28 cm), pelvic triangle area (PTA) (>572.25 cm2) and clearance at udder (CU) (>23.16 cm) showed an increase likelihood of multiple LZ when compared to single LZ. Further, HG measurement (>62.29 cm), WH (>50.54 cm), PG (>71.85 cm) and ear length (>13.00 cm), neck length (>22.01 cm), PTA (>589.64 cm2), CU (>23.20 cm) and DTM bones (>12.47 cm) were associated with increased likelihood of triplet LZ, when compared with that of twin LZ.

Conclusion: HG measurement was the best discriminating factor, while PG, neck length, DTM bones, CU, PTA, WH and ear length measurements were other important factors that could be used for identifying prolific goats to achieve economic benefit out of prolificacy trait.

Keywords: Black Bengal, body linear traits, goat, prolificacy, litter size.