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Articles by N. Pandey
Total Records ( 2 ) for N. Pandey
  N. Shit , R.P. Singh , K.V.H. Sastry , J. Mohan , N. Pandey and R.P. Moudgal
  In sexually active male Japanese quail cloacal gland hypertrophy and foam production is androgen dependent and highly positively correlated with testis size and sexual activity. Nevertheless, the physiological functions of this gland in male reproduction are still a controversial issue. Therefore, the aim of this investigation was made to rule out the effect of cloacal gland size on semen production, sperm activities and fertility in both Heavy Body Weight (HBW) and White Feathered (WF) lines of Japanese quail. Sixty matured males and thirty females (8 weeks) from each lines of Japanese quail were randomly selected. Males were categorized into three groups (20/group) based on the increasing order of cloacal gland area. They were maintained in uniform husbandry condition with ad libitum feed and water at 14 h photo-schedule. Highest (11.04±0.20 and 9.6±0.41) semen production was recorded in birds having largest cloacal gland area and was positively correlated to the cloacal gland size in both the experimental quail lines. Metabolic activity by adopting Methylene Blue Reduction Time (MBRT) test and proteolytic activity by Acrosine Proteolytic Activity (APA) test of quail spermatozoa was found significantly different (p≤0.05) among groups and also revealed a positive correlation to the increasing area of the cloacal gland. In both the experimental lines, fertility was noted maximum (p≤0.05) in group III categorized by largest cloacal gland area. From this current study, it may be concluded that cloacal gland can be considered as external indicator or selection marker of testicular functions in male Japanese quail.
  N. Kataria , A.K. Kataria , N. Pandey , R. Maan , A. Joshi , L.N. Sankhla , M. Chaturvedi , R. Pachauri and P.K. Pilania
  An investigation was carried out in 1235 male and female goats of Marwari breed belonging to arid tracts in India to find out the role of serum magnesium as a biomarker of oxidative stress. The samples were collected during moderate and hot ambiences from apparently healthy animals and from the animals having gastrointestinal parasites, Peste des Petits Ruminants (PPR), mange and those affected by drought. The mean value recorded during moderate ambience was considered as control. The mean value of serum magnesium during hot ambience of animals having gastrointestinal parasites, PPR, mange and those affected by drought were significantly (p≤0.05) lower than control mean value. Minimum value was observed in drought affected animals. The control mean value of serum magnesium was 1.24±0.003 m mol L-1 and the lowest value in drought affected animals was 0.49±0.002 m mol L-1. Simultaneously, serum catalase was also determined in each case to assess oxidative stress because it is considered as a potent marker of oxidative stress. Significantly higher (p≤0.05) values of serum catalase in each case revealed the presence of oxidative stress in animals. A concomitant decrease in serum magnesium reflected towards its antioxidant property. It was concluded that oxidative stress resulted in lowering in the serum magnesium levels however, impact varied. Low serum magnesium in gastrointestinal parasitised, PPR, mange and drought affected animals could be the outcome of oxidative stress to the animals and therefore it can be opined that dietary deficiency of magnesium is not the only reason behind the low magnesium levels but oxidative stress mechanism also play pivotal role. Serum magnesium can be used effectively as one of the biomarkers to assess oxidative stress.
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