Inheritance of resistance to lindane in a laboratory-selected strain of Tribolium castaneum (Herbst)     

Jitender Kumar  S. K. Bhatia 《Pest management science》1982,13(5):513-516

Studies on the inheritance of resistance to lindane in a laboratory-selected strain of Tribolium castaneum, by making crosses between the resistant and a susceptible strain, showed that resistance in this strain is controlled by an autosomally inherited single gene which is incompletely dominant.  相似文献   

TREATMENT OF DIAPHRAGMATIC HERNIA IN BUFFALOES   总被引：2，自引：0，他引：2  

J. Singh    B. Prasad    R. Kumar    R. N. Kohli  S. S. Rathor 《Australian veterinary journal》1977,53(10):473-475

The surgical treatment of diaphragmatic hernia attempted on 19 lactating buffaloes is described. Thirteen cases recovered uneventfully, 1 recovered after developing brisket oedema and 5 died, 3 during surgery and 2 postoperatively. The desired depth of anaesthesia was achieved by the administration of 6% chloral hydrate followed by 5% thiopentone sodium. A postxiphoid approach and the use of a continuous lock stitch suture were preferred to repair the vent in the diaphragm. Pre- and post-operative use of hydrocortisones and fluids and sufficient tissue oxygenation by controlled positive pressure respiration are believed to be keys to the success of the treatment adopted.  相似文献   

Estimation of genetic changes in Sahiwal herd     

D Kumar  P Narain 《The Indian veterinary journal》1979,56(10):844-848

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Path coefficient analysis of correlation between breeding cycles of the common myna Acridotheres tristis (Passeriformes: Sturnidae) and its phthirapteran ectoparasites     

Srivastava R  Kumar S  Gupta N  Singh SK  Saxena AK 《Folia parasitologica》2003,50(4):315-316

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Resistance to early blight of tomato with respect to various parameters of disease epidemics   总被引：3，自引：1，他引：2  

Koshlendra Kumar?PandeyEmail author  Padma Kant?Pandey  Gautam?Kalloo  Malay Kumar?Banerjee 《Journal of General Plant Pathology》2003,69(6):364-371

Resistance to early blight in the tomato was assessed by examining various parameters of the progress of the disease. Artificial inoculation and the scoring technique were standardized. Test plants were inoculated with 125cfu/ml of a 12-day-old culture of a pathogenic isolate of Alternaria solani. Screening under artificial conditions was more informative than that under natural epidemic conditions. Tomato cultivars CLN-2071-C, CLN-2070-A, BSS-174, and DTH-7 with resistance expressed as slow blighting against four pathogenic isolates of A. solani, were selected for cultivation in disease-prone areas. Disease intensity increased with the age of plants under the same inoculum load. The area under the disease progress curve (AUDPC) was positively correlated with the percentage disease index and negatively with resistance. Calculation of the apparent infection rate (r) was more informative for natural epidemics than for artificial conditions. The sequential apparent infection rate between observation periods was better correlated with disease progress than was the total apparent infection rate between the first and last observations. A double sigmoidal disease progress curve during the same cropping season was characteristic of some varieties when fungal infection took place during the vegetative phase of crop growth.  相似文献   

Carbon fibres and plasma-preserved tendon allografts for gap repair of flexor tendon in bovines: gross,microscopic and scanning electron microscopic observations     

Kumar N  Sharma AK  Sharma AK  Kumar S 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2002,49(5):269-276

The efficacy of carbon fibres and plasma-preserved tendon allografts for gap repair in the superficial digital flexor tendon in the mid-metatarsal region was evaluated in 12 crossbred calves. Experimental tenectomies were performed, followed by implantation of carbon fibres in group I (12 legs) and plasma-preserved tendon allografts in group II (12 legs). Gross observations in group I showed filling of the defect with granulation tissue with more vascularity on day 7, which was less prominent at day 14. On day 30, the neotendon formed was slightly thicker and comparable to normal tendon in appearance and texture. On day 90, it exhibited all the characteristics of a fully developed tendon. Whereas, in group II increased vascularity at the site and encapsulation of the graft with connective tissue in early periods was observed. The gap between graft and host was filled with fibrous connective tissue. Peritendinous adhesions were maximum on day 7 which were gradually reduced in both groups. Microscopically, an acute inflammatory reaction in the periphery of carbon fibres was observed on day 7. Immature fibroblasts were arranged in a haphazard pattern at this stage. By day 14, numerous newly formed capillaries and comparatively more mature fibroblasts were present in between and around the carbon fibres which were aligning parallel to the longitudinal axis of the tendon. By day 30 the healing tissue exhibited longitudinal orientation of collagen fibres and was at a more advance stage of maturation. By day 90, the neotendon formed simulated the picture of normal tendon. In the grafted tendon group, there was normal healing tissue at the functional sites between host and grafted tendon. The fibroblastic activity appeared to be both extrinsic and intrinsic in origin. The connective tissue had invaded the graft to a variable distance and there was resorption of graft which was replaced by newly formed connective tissue on day 90. Scanning electron microscopic observation revealed formation of neotendon between carbon fibre strands, resulting in thickening of the implant. In later stages parallel collagen fibres resembling normal tendon were observed in both groups.  相似文献   

Identification of immunoreactive polypeptides of Babesia equi parasite during immunization     

Kumar S  Malhotra DV  Nichani AK 《Veterinary parasitology》2002,107(4):295-301

This study was carried out to identify immunoreactive polypeptides in Babesia equi merozoite antigen. Three fractions of killed B. equi merozoite antigen viz.; whole merozoite (WM), cell membrane (CM) and high speed supernatant (HSS) antigens were prepared from the parasite infected erythrocytes. These antigenic preparations along with ghost antigen from non-infected erythrocytes were fractionated on 12% sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and immunoblotted with sera showing high antibody titres. On SDS-PAGE, 16 polypeptides with molecular weight (Mr) in the range of 112-17kDa were obtained from the WM and CM antigens. But only six polypeptides were detected (96.5-28kDa) in the HSS antigen. On immunoblotting with high titred serum collected from donkeys following two immunizations with a killed B. equi merozoite immunogen, 11 polypeptides were observed in the WM and CM antigens (Mr 112-18kDa). Of these, four polypeptides (Mr 112, 45, 33 and 18kDa) were identified as most immunoreactive. Besides these, a 28kDa was observed as strong immunoreactive protein in WM and CM antigens. The HSS antigen showed only six polypeptides and one peptide (28kDa) was identified as immunoreactive. When high titred serum collected from immunized donkeys following challenge with B. equi infected blood and was used for immunoblotting, the protein profile of WM and CM antigens remained the same. However, three additional polypeptides (Mr 81, 54.5 and 39kDa) were detected in HSS antigen.  相似文献   

Concentrations of substance P and prostaglandin E2 in synovial fluid of normal and abnormal joints of horses     

Kirker-Head CA  Chandna VK  Agarwal RK  Morris EA  Tidwell A  O'Callaghan MW  Rand W  Kumar MS 《American journal of veterinary research》2000,61(6):714-718

OBJECTIVE: To correlate substance P content of synovial fluid with prostaglandin E2 content, radiographic evidence of joint abnormality, and anatomic location of the joint for normal and osteoarthritic joints of horses. SAMPLE POPULATION: Synovial fluid from 46 normal joints in 21 horses and 16 osteoarthritic joints in 10 horses. PROCEDURE: Normal and osteoarthritic joints were identified by clinical and radiographic examination, by response to nerve blocks, during scintigraphy or surgery, or by clinicopathologic evaluation. Substance P and prostaglandin E2 contents of synovial fluid were determined by radioimmunoassay. Radio-graphs of joints were assigned a numeric score reflecting severity of lesions. Joints were assigned a numeric score reflecting anatomic location. RESULTS: Median concentrations of substance P and prostaglandin E2 were significantly increased in osteoarthritic joints, compared with normal joints. A significant correlation was found between concentrations of substance P and prostaglandin E2 in synovial fluid, but a correlation was not detected between substance P concentration in synovial fluid and anatomic location of the joint or between radiographic scores of osteoarthritic joints and concentrations of substance P or prostaglandin E2. CONCLUSIONS AND CLINICAL RELEVANCE: A correlation existed between concentrations of substance P and prostaglandin E2 in synovial fluid obtained from normal and osteoarthritic joints. However, content of substance P in synovial fluid cannot be predicted by the radiographic appearance of the joint or its anatomic location. Substance P and prostaglandin E2 may share an important and related role in the etiopathogenesis of osteoarthritis, lending credence to the importance of neurogenic inflammation in horses.  相似文献   

Immune Responses to Intermediate Strain IBD Vaccine at Different Levels of Maternal Antibody in Broiler Chickens     

Kumar K  Singh KC  Prasad CB 《Tropical animal health and production》2000,32(6):357-360

Tropical Animal Health and Production -  相似文献   

Assessment of the Intensity of Behavioural Traits and Ovulation between Synchronized and Non-synchronized Cows     

K Forster  CS Galina  M Maquivar  G Van der Laan  R Arnoni  A Verduzco 《Reproduction in domestic animals》2007,42(6):566-570

Thirty cyclic, non-suckled Brahman cows were divided into three groups, all of which were synchronized sequentially with CIDR-B and observed continuously for 100 h to determine different behavioural oestrus signs. Twenty-four hours after implant withdrawal, all synchronized cows in the group, together with all other cows displaying oestrus, were subjected to intensive ultrasonographic observations (every 6 h for 120 h) to pinpoint the moment of ovulation. In the first group, oestrus and ovulation response was 60% (6/10), in the second 44% (4/9) showed oestrus and six ovulated, and in the third group oestrus and ovulation were 80% (8/10). Significant differences were observed between the second and third groups (p < 0.05). No differences were observed in the duration of oestrus, time when oestrus was displayed after implant withdrawal, time of ovulation and onset of oestrus, end of oestrus to ovulation, and intensity of oestrus on a point scale. The relationship between duration of oestrus and time of ovulation was r(2) = 0.16. Ovulation, on average, was 32.1 +/- 14.5 h after the onset of oestrus, 22.3 +/- 16.5 h after the end of oestrus, and 91.8 +/- 16.7 after implant withdrawal, although no significant differences were observed. One non-synchronized animal showed oestrous activity in the second group but failed to ovulate. In the third group, 8 animals showed oestrus, 4 with high concentrations of progesterone. Of the other four one ovulated. In conclusion, oestrous behaviour is not necessarily the best marker to predict the time when ovulation takes place due to variation in the length of the oestrous period and the possible integration of non-ovulatory animals into sexually active groups.  相似文献