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Your search keyword '"Debpriyo Kumar Dey"' showing total 3 results
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3 results on '"Debpriyo Kumar Dey"'

1. In vitro production of desired sex ovine embryos modulating polarity of oocytes for sex-specific sperm binding during fertilization

Author

Ramesh Kumar G., Ashish Mishra, Arindam Dhali, Ippala Janardhan Reddy, Debpriyo Kumar Dey, Dintaran Pal, and Raghavendra Bhatta

Subjects
Medicine, Science
Abstract

Abstract The present study aimed to modulate the oxidative status-mediated polarity of the oocytes for sex-specific sperm fertilization to generate desired sex embryos. In vitro embryos were produced at different oxidative status, varying O2 concentrations, and without/with l-carnitine in maturation and culture media. The majority of the embryos produced at high oxidative stress were males whereas; low oxidative status favoured female embryos production. Low O2 doubled the proportion of female embryos (10.59 vs 21.95%); however, l-carnitine supplementation in media increased approximately seven-folds of the female embryos (12.26 vs. 77.62%) production. Oocytes matured at high oxidative status were in the repolarized state favouring positively charged Y sperm fertilization to produce significantly more male embryos. Low oxidative status favoured negatively charged X sperm fertilization to the oocytes in the depolarized state to produce more female embryos. Intracellular ROS was significantly low in female embryos than in males; however, female embryos were more stressful than males. The study concluded that the oxidative status-mediated alteration in pH of the medium to modulate the intracellular positive ions is the main critical factor to influence the sex of embryos through sex-specific sperms fertilization to the oocytes as per their polarity.

Published
2022
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3. Supplementation of trisodium citrate improves recovery rate of subclinical mastitis in crossbred cows

Author

Chinmayee Sahu, Ayyasamy Manimaran, Arumugam Kumaresan, Duraisamy Rajendran, Preedia Babu Ezhuthupurakkal, Deepak Sharma, Debpriyo Kumar Dey, and Muniandy Sivaram

Abstract

Mastitis is the top most reason for antibiotic usage, which is an important public health concern due to antimicrobial resistance development in pathogen. Citrate is an important precursor for milk synthesis and regulation of homeostasis between Ca2+ and H+ ions and thereby milk fluidity. The aim of this study was to evaluate the effect of trisodium citrate (TSC) on recovery of subclinical mastitis (SCM) in HF crossbred cows. Apparently healthy lactating cow’s milk samples were screened by somatic cell count (SCC) and California mastitis tests (CMT) methods for three consecutive days. Animals were diagnosed as SCM affected (n = 16) or healthy (n = 6) using milk SCC cutoff value of 200×103 cells/ml (i.e., ≥ 200 ×103 cells/ml as SCM and ≤ 200 ×103 cells/ml as healthy) and classified into three groups based on parity, stage of lactation and milk yield during pre-treatment period. SCM affected cows (n = 8) supplemented with TSC (30 mg/kg B.wt./day for 28 days) and effect of supplementation was evaluated through milk SCC, CMT score, milk yield, milk composition, milk citrate level and bacteriological cure rate in comparison with non-supplemented SCM affected cows (n = 6) and apparently healthy cows (n = 8). Data were analyzed by using mixed model and McNemar's test. Supplementations of TSC cause no significant changes in milk yield and its composition. Supplementation cause significant (P

Published
2022
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