Browsing by Author "Singh, Raghbir"
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ThesisItem Open Access Evaluation of Soil Test and Establishment of Critical Limits of Available Phosphorus in Normal and Saline Soils(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 1991) Chander, Krishan; Singh, RaghbirThesisItem Open Access Phosphorus Availability to Wheat (Triticum aestivum L.) in Normal and Heavy Metal Polluted Soils(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2000) Bhadra, Sujit Kumar; Singh, RaghbirThesisItem Open Access Potassium Fixation Studies In Major Soils Of Haryana(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2009) Singh, Raghbir; Pannu, B. S.ThesisItem Open Access Prevalence And Pathology Of Gumboro Disease(Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, 1993) Singh, Raghbir; Grewal, G. S.Studies on prevalence of Gumboro disease revealed its overall incidence to be 0.28 per cent with mortality ranging from 0.08 to 25 per cent. However, in majority of outbreaks the mortality varied from 0.1 to 5 per cent. Maximum outbreaks occurred in Ludhiana district followed by Jalandhar and Sangrur. Maximum outbreaks occurred in the month of May during the summer season in the birds aged 21- 28 days. The disease was produced experimentally in the broiler chicks. The birds exhibited signs of dullness, depression, anorexia and ruffled feather. Mortality occurred between 3rd and 5 DPI. Biochemical studies revealed a decrease in total proteins and albumin and a marked increase in SGOT, SGPT, LDH, alkaline phosphatase and uric acid. Patho-anatomical studies revealed similar changes in spontaneous and experimental birds. The bursa of Fabricius was hypertrophied and covered with yellowish tranudate. Haemorrhages were noticed both on serosal and mucosa] surface. Kidneys, liver and spleen were swollen. Haemorrhages were noticed on the muscles of thigh andbreast. Microscopically, lymphoid necrosis, edema, haemorrhages and subsequent atrophy of bursal follicles were observed in bursa of Fabricius. Congestion, haemorrhages and degenerative changes were observed in the liver and kidneys. Lymphoid necrosis, occurred in the spleen and thymus. 25 per cent mortality occurred in the inoculated chicken embryos. Grossly liver necrosis, edema in the abdominal region and subcutaneous tissue were prominent lesions. Slight dwarfing of chicken embryos occurred by 120 hour PI. Histopathologically, necrotic areas were observed in the liver. Congestion, haemorrhages and degenerative changes were observed in the kidneys. Haemorrhages were also noticed in the myocardium. Areas of liquifactive necrosis were observed in brain and in skin, subcutaneous edema was observed.ThesisItem Open Access Prevalence and Pathology of Gumboro Disease(College of Veterinry Sciecne, PAU, Ludhiana, 1993) Singh, Raghbir; Grewal, G. SThesisItem Open Access Quality parameters of under ground waters of Bhuna block in district FaTheabad of Haryana(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 2003) Singh, Raghbir; Sharma, J. CThesisItem Open Access Zinc-Iron Relationship in Sorghum(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 1986) Shankar, Shiv; Singh, Raghbir