Browsing by Author "SHARMA, OM PRAKASH"
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ThesisItem Open Access CHANGES IN SOIL PROPERTIES OF A TYPIC USTOCHREPTS DUE TO SALINE WATER IRRIGATION(JNKVV,JABALPUR, 1982) SHARMA, OM PRAKASH; SHARMA, O.P.ThesisItem Open Access COMPARATIVE STUDY OF GRWOTH, FRUITING AND FRUIT QUALITY OF SOME ASIAN VARIETIES OF APRICOT (PRUNUS ARMENIACA L.)(HIMACHAL PRADESH UNIVERSITY AGRICULTURAL COMPLEX COLLEGE OF AGRICULTURE, SOLAN, 1973) SHARMA, OM PRAKASH; SHEKHAR, G. SThesisItem Open Access EFFECT OF PLANT GROWTH STIMULATORS TO INCREASE PRODUCTIVITY OF SOYBEAN(JNKVV,JABALPUR, 1984) SHARMA, OM PRAKASH; SHARMA, S.R.ThesisItem Open Access INHERITANCE OF RESISTANCE TO MOSAIC VIRUS DISPAE AND SOME QUALITATIVE AND QUANTITATIVE TRAITS IN CAPSICUM ANNUUM L.(DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY ; SOLAN, 1987) SHARMA, OM PRAKASH; SHARMA, P. PThesisItem Open Access OESTROUS CYCLE IN HARIANA AND ITS EFFECT ON ECONOMIC CHARACTERS(1966-04) SHARMA, OM PRAKASH; SINGH, VPA comparative approach was used to investigate two closely related South American rodent species: the wild cavy (Cavia aperea) and the yellow-toothed cavy (Galea musteloides). These species of wild guinea-pig inhabit different habitats and show divergent social and mating systems. Cavia have a polygynous mating system, whereas in Galea promiscuous mating occurs. These observations correspond to functional variations in sperm characteristics, which might be interpreted as adaptations to different reproductive patterns in the females of both species. Twenty-two female C. aperea and G. musteloides (11 of each species) were investigated to elucidate differences in the characteristics of the oestrous cycles. The experimental design consisted of three stages, in which the degree of contact between the sexes was successively changed. During these stages, the reproductive cycle of the females was monitored by examining the condition of the vaginal closure membrane, analysing vaginal smears and determining serum concentrations of oestrogens and progesterone. The results revealed different types of oestrous cycle in the two species. Female C. aperea showed periodical cycles with spontaneously occurring oestrous periods, ovulation and corpus luteum activity. In contrast, in female G. musteloides, oestrus was exclusively induced by the presence of a male. However, after the induction of oestrus, ovulation and corpus luteum activity occurred spontaneously without stimuli from copulation. To date this type of oestrous cycle has not been described for any other mammalian species. Thus, these data indicate that differences in the reproductive patterns of the females may have shaped the evolution of different sperm characteristics in the males.ThesisItem Open Access Performance Of Black Gram Varities To Varying Row Spaceing Under Agro Climatic Conditions Of Vindhyan Plataeu(Rvskvv, Gwalior (M.P.), 2015) SHARMA, OM PRAKASH; Singh, R.P.ThesisItem Open Access STANDARDISATION OF TECHNIQUE OF INTERPECIFIC QUEEN INTRODUCTON(HIMACHAL PRADESH KRISHI VISHVADIDYALAYA ; PLAMPUR, 1972) SHARMA, OM PRAKASH; SHARMA, P. LThesisItem Open Access STANDARDISATION OF TECHNIQUE OF INTERSPECIFIC QUEEN INTRODUCTON(HIMACHAL AGRICULTURAL COLLEGE OF RESEARCH INSTITUTE, SOLAN, 1972) SHARMA, OM PRAKASH; SHARMA, P. LThesisItem Open Access STUDIES ON OESTROUS CYCLE IN HARIANA AND ITS EFFECT ON ECONOMICCHARACTERS(duvasu, 1966-04) SHARMA, OM PRAKASH; singh, b.pAs an integral part of the development of an artificial insemination programme in the captive koala, female reproductive physiology and behaviour were studied. The oestrous cycle in non-mated and mated koalas was characterized by means of behavioural oestrus, morphology of external genitalia and changes in the peripheral plasma concentrations of oestradiol and progestogen. The mean (+/- SEM) duration of the non-mated oestrous cycle and duration of oestrus in 12 koalas was 32.9 +/- 1.1 (n = 22) and 10.3 +/- 0.9 (n = 24) days, respectively. Although the commencement of oestrous behaviour was associated with increasing or high concentrations of oestradiol, there were no consistent changes in the morphology or appearance of the clitoris, pericloacal region, pouch or mammary teats that could be used to characterize the non-mated cycle. As progestogen concentrations remained at basal values throughout the interoestrous period, non-mated cycles were considered non-luteal and presumed anovulatory. After mating of the 12 koalas, six females gave birth with a mean (+/- SEM) gestation of 34.8 +/- 0.3 days, whereas the remaining six non-parturient females returned to oestrus 49.5 +/- 1. 0 days later. After mating, oestrous behaviour ceased and the progestogen profile showed a significant increase in both pregnant and non-parturient females, indicating that a luteal phase had been induced by the physical act of mating. Progestogen concentrations throughout the luteal phase of the pregnant females were significantly higher than those of non-parturient females. Parturition was associated with a decreasing concentration of progestogen, which was increased above that of basal concentrations until 7 days post partum.