After an initial period of turbulence in his career, he rose in the profession by his hard work, perseverance and patience. In the year 1966, he was appointed as Professor of Pathology at Vet. College, Mathura. By virtue of his academic excellence he was offered the prestigious position of Head, Division of Pathology at IVRI and subsequently, awarded Professor of Eminence Chair in Veterinary Pathology. He had the privilege of working with Prof. Rubarth at Royal Veterinary College, Stockholm, Sweden, where he developed considerable expertise in anatomy and necropsy techniques. He was a member of High Level Expert Team for Evaluation Mission of FAO/SIDA Postgraduate Course in Veterinary Pathology and Animal Reproduction in 1978 and a member of Joint FAO/SIDA Consultant Committee on Veterinary Education - New trends in Teaching Veterinary Medicine. He had the distinction of working as FAO Expert in Indonesia in 1980. He also shouldered the responsibility of Principal-cum-Joint Director and subsequently, worked as the Director, Indian Veterinary Research Institute (1982–84) before his retirement.

Dr. Rajya has been responsible for shaping the trends in Education and Research in Veterinary Science in general and Veterinary Pathology in particular. He was one of the main architect in formation of Indian Association of Veterinary Pathologists and worked as the President of the association twice (1976–79 and 1983–86). His scientific achievements are well known and documented. His work on Jaagziekte, Maedi/Visna, Marek's disease. M.C.F., IBR, Chlamydiosis, Mycoplasmosis, Paratuberculosis, arterial disease of ruminants, encephalopathy in animals, etc. got national and international recognition and opened new scope for further research in these areas. He has guided several MVSc and PhD students in Veterinary Pathology and published quality research papers in international journals, which have been cited in several textbooks.

He was bestowed several awards by professional societies and was honoured the coveted fellowships of College of Applied Allergy and Immunology, Indian Association of Veterinary Pathologists and National Academy of Veterinary Science, etc. he also worked as an expert in various committees and panels of Government Organizations and universities. Even after retirement he was very active and worked as Consultant at BAIF, Pune and HP Agricultural University and later also was actively associated with National Academy of Veterinary Science. He had the habit of keeping himself abreast with developments particularly in veterinary science through internet surfing. Dr. Rajya possessed unique personality, gentle nature, benevolent behaviour and highly impressive style of talking.

In the sad demise of Dr. Rajya on 6^th August 2005 the Veterinary profession has lost a true academician, researcher and an able administrator.

May his soul rest in peace.

In Memoriam