Decomposition of paddy straw in soil and the effect of straw incorporation in the field on the yield of wheat     

S. Singh  Renu Batra  M. M. Mishra  K. K. Kapoor  Sneh Goyal 《植物养料与土壤学杂志》1992,155(4):307-311

In a laboratory experiment, incorporation of paddy straw in soil immobilized native as well as added fertilizer N and about half of the immobilized N was mineralized after 90 days of straw incorporation. Straw and N application alone or in combination increased biomass carbon, phosphatase and respiratory activities of the soil. Microbial biomass carbon and phosphatase activity were maximum at 30 days of straw decomposition. In field trials, incorporation of paddy straw 3 weeks before sowing of wheat significantly increased the wheat yield at Sonepat district in a clay loam soil while no such beneficial effect was observed in a sandy loam soil at Hisar.  相似文献   

Tuberculin screening of some selected Fulani lactating cows in North-Central Nigeria     

Aishatu Abubakar  Lushaikyaa Allam  Solomon O. Okaiyeto  Ayuba Caleb Kudi  Shehu U. Abdullahi  Peter H. Brooks  Madhu Goyal 《Tropical animal health and production》2013,45(7):1505-1508

The prevalence of mycobacterial infection among lactating Fulani cows was investigated in the Federal Capital Territory, Abuja and Kaduna State of Nigeria. Tuberculin testing using single comparative intradermal tuberculin test showed a 14.6 % positive, 4 % doubtful, and 81.4 % negative reactors. Mycobacterial infection was found to be present in the nomadic (constantly moving) and seminomadic (limited movement) management systems studied but management showed no significant effect on the prevalence of the disease. However, the prevalence was significantly higher in older age groups than the younger ones (P?<?0.05).  相似文献   

The Use of a One-Step Real-Time Reverse Transcription Polymerase Chain Reaction (rRT-PCR) for the Surveillance of Viral Hemorrhagic Septicemia Virus (VHSV) in Minnesota     

Nicholas B. D. Phelps  Devi P. Patnayak  Yin Jiang  Sagar M. Goyal 《Journal of aquatic animal health》2013,25(4):238-243

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Growth Rates at the Extremities of Limb Bones in Young Horses   总被引：1，自引：0，他引：1       下载免费PDF全文

H. O. Goyal  F. J. MacCallum  M. P. Brown    J. B. Delack 《The Canadian veterinary journal. La revue veterinaire canadienne》1981,22(2):31-33

Measurements were made of growth at the extremities of all the long bones of the left limbs of 23 horses between 52 and 104 days of age. Growth rates were more rapid in the younger than in the older animals. Growth was more rapid in the hind limb than in the forelimb. Growth rates were greater for males than in females.

Although this age group represents only two of the 60 or so months necessary for maturity to be reached, oxytetracycline bone-labelling produced results which are more precise than measurements obtained by other methods. This study provides a substantial amount of data for an age group of horses whose growth rate has not been well documented.

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Redefinition of the feline urologic syndrome: feline lower urinary tract disease with heterogeneous causes     

C A Osborne  G R Johnston  D J Polzin  J M Kruger  E M Poffenbarger  F W Bell  D A Feeney  S Goyal  T F Fletcher  J A Newman 《Veterinary Clinics of North America: Small Animal Practice》1984,14(3):409-438

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Clinicopathologic analysis of herpesvirus-induced urinary tract infection in specific-pathogen-free cats given methylprednisolone     

J M Kruger  C A Osborne  S M Goyal  T D O'Brien  K A Pomeroy  R A Semlak 《American journal of veterinary research》1990,51(6):878-885

The clinicopathologic manifestations of bovid herpesvirus-4 (BHV-4; FCAHV strain)-induced infection of the lower portion of the urinary tract were characterized in 12 adult neutered male and 6 female specific-pathogen-free cats, and were compared with those in 12 neutered male control cats. Six neutered male and 6 female cats were given immunosuppressive doses of methylprednisolone acetate prior to inoculation of their urinary bladders with BHV-4. Six neutered male control cats were given immunosuppressive doses of methylprednisolone acetate prior to inoculation of their urinary bladders with uninfected tissue culture control inoculum. Six additional neutered male control cats were exposed only to uninfected tissue culture control inoculum. All cats were observed for 90 days following inoculation. Dysuria and gross hematuria were observed in only 1 BHV-4-exposed cat. Radiographic abnormalities of the lower portion of the urinary tract were not observed. Microscopic hematuria, crystalluria, and lipiduria were identified with similar frequency in BHV-4-exposed and control cats. Results of urine culturing for bacteria, mycoplasma, ureaplasma, and viruses were negative. Viruses were not isolated from blood leukocytes collected from exposed or control cats. Three to 6 weeks after inoculation, high concentrations of BHV-4 serum antibodies were detected in all exposed cats by an indirect fluorescent antibody test. Light microscopic examination of the urinary tract revealed multifocal lymphoid cystitis in 2 BHV-4-exposed cats. Except for suppurative bronchitis in 1 BHV-4-exposed cat given glucocorticoids, morphologic differences in urinary and extraurinary tissues were not observed. In urinary bladder tissue collected 90 days after inoculation, BHV-4 was reisolated from urinary bladder explants of all but 1 exposed cat. Virus was also isolated from a kidney explant of 1 exposed male cat, and spleen cell co-cultures of 1 exposed female cat given glucocorticoids.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Pig herds having a single reactor to serum antibody tests to Aujeszky's disease virus.   总被引：1，自引：0，他引：1  

J F Annelli  R B Morrison  S M Goyal  M E Bergeland  W J Mackey  D G Thawley 《The Veterinary record》1991,128(3):49-53

The introduction of Aujeszky's disease virus into a herd of pigs usually results in a rapid spread of the virus and a high percentage of pigs become seropositive. However, herd monitoring for the virus occasionally reveals a single seropositive breeding pig, referred to as a single reactor. The seropositive status of single reactors may be due to previous vaccination against Aujeszky's disease, or to exposure to a field strain of the virus, or to a false positive reaction in the serological assay. During a monitoring programme in Minnesota, 30 pig herds with single serological reactors were detected. Twenty-seven of these single reactors from 19 herds were segregated from their herds immunosuppressed with dexamethasone. Aujeszky's disease virus was isolated from four of the 27 pigs. Three of the four herds subsequently had outbreaks of Aujeszky's disease, suggesting that some single reactors were infected with Aujeszky's disease virus and had the potential to spread the virus within and between herds.  相似文献   

Cold-adapted strain of avian pneumovirus as a vaccine in one-day-old turkeys and the effect of inoculation routes     

Patnayak DP  Goyal SM 《Avian diseases》2004,48(1):155-159

To determine the optimum route of vaccination, we inoculated 1-day-old turkeys with a cold-adapted strain of avian pneumovirus (APV) by oculonasal, oral, or aerosol route. Another two groups served as nonvaccinated-challenged and nonvaccinated-nonchallenged groups. Birds in all vaccinated and nonvaccinated-challenged groups were challenged with virulent APV 3 wk postvaccination. After challenge, no vaccinated bird developed clinical signs or virus shedding, whereas nonvaccinated-challenged birds developed clinical signs (clinical score = 11.2/bird) and shed virus from their choanal cleft. Birds in all three vaccinated groups seroconverted at 3 wk postvaccination. The nonvaccinated-nonchallenged group remained free of clinical signs and virus shedding and did not develop APV antibodies throughout the course of the study. These results suggest that this cold-adapted strain of APV is safe and effective in 1-day-old turkeys when given by any of the three routes.  相似文献   

Comparative pathogenicity of early and recent isolates of avian metapneumovirus subtype C in turkeys          下载免费PDF全文

Binu T Velayudhan  Sally L Noll  Anil J Thachil  David A Halvorson  Daniel P Shaw  Sagar M Goyal  Kakambi V Nagaraja 《Canadian journal of veterinary research》2008,72(4):371-375

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Antimicrobial resistance in enteric pathogens isolated from Minnesota pigs from 1995 to 2004     

Malik YS  Chander Y  Olsen K  Goyal SM 《Canadian journal of veterinary research》2011,75(2):117-121

This study investigated the occurrence and antimicrobial resistance profiles of Escherichia coli and Salmonella sp. isolated from swine samples submitted to the Minnesota Veterinary Diagnostic Laboratory (MVDL) in Saint Paul, Minnesota from 1995 to 2004. During this time period, a total of 5072 E. coli and 2793 Salmonella sp. was isolated. Most of these isolates were found to be resistant to the tetracycline and beta-lactam group of antibiotics. Resistance to spectinomycin was also frequently observed. An increasing trend in ampicillin resistance and a decreasing trend in apramycin resistance were seen in both pathogens, although ampicillin resistance was relatively higher in E. coli than in Salmonella. Aminoglycoside (amikacin) and quinolone (enrofloxacin) were the only antimicrobials to which minimum or no resistance was observed. The resistance of pig pathogens to several antibiotics indicates the need to routinely monitor the use of these antimicrobials and their associated resistance in pig populations.  相似文献