Uttam Kumar Sahu

Validation and Procedural Refinement of a Breed-specific Ovum Pick-Up Protocol in Tharparkar Cows

Uttam Kumar Sahu, Brijesh Kumar, M. H. Khan, Mayank Singh, Chinmay Warghat, Vishnu Vadera & V. S. Chouhan · Asian Journal of Biotechnology and Bioresource Technology · 2026

Ovum pick-up (OPU) is a transvaginal ultrasound-guided technique used for repeated follicular aspiration and in vitro embryo production in cattle. Procedural variables such as needle gauge, aspiration pressure, flow rate, follicle size, synchronization strategy, and temperature i...

Open access Research Article 10.9734/ajb2t/2026/v12i1285

Fertility Outcomes of Sexed Semen Artificial Insemination under Field Conditions in Dairy Cattle and Buffalo in Smallholder Farming Systems in India

M. H. Khan, Uttam Kumar Sahu, Brijesh Kumar, Neeraj Srivastava, Pratyanshu Srivastava, Aadhithya Muthuswamy Jayaprakash & Renu Sharma · Journal of Advances in Microbiology · 2026

Sexed semen technology has emerged as an important reproductive tool for improving genetic progress and herd structure in dairy production systems. Field performance of sexed semen artificial insemination was evaluated in cattle (n = 840) and buffalo (n = 319) under smallholder d...

Open access Research Article 10.9734/jamb/2026/v26i51108

High-Rise Syndrome Associated Stillbirth and Obstructive Dystocia in a Pregnant Rhesus Macaque (Macaca mulatta)

Adhithya Muththuswamy J., Uttam Kumar Sahu, Brijesh Kumar, Pratyanshu Srivastava, Anurag Patel, Mahima Porwal, Vishnu Vadera, Mayank Singh, A. M. Pawde, Vandana & Narayanan Krishnaswamy · Journal of Scientific Research and Reports · 2026

Stillbirth in non-human primates represents failure of the maternal–fetal–placental unit and may result from abnormal fetal presentation, maternal compromise, or trauma. In rhesus macaques, mean gestation length is approximately 166 ± 3 days, and normal neonatal birth weight rang...

Open access Research Article 10.9734/jsrr/2026/v32i34025

Exploring Nanoparticle-based Approaches to Improve Semen Freezability in Domestic Animals

Pratyanshu Srivastava, Sushil Kumar, Neeraj Srivastava, Uttam Kumar Sahu, Anoop Kumar, Shubhangi Prakash Suryawanshi, Amala Jackson, Usha Yadav & Amrita Priyadershi · Asian Journal of Biotechnology and Bioresource Technology · 2026

Semen cryopreservation is an indispensable tool in animal reproductive biotechnology, supporting long-term genetic conservation, artificial insemination, selective breeding and livestock improvement programmes. However, the freeze-thaw process can induce substantial cryoinjury in...

Open access Research Article 10.9734/ajb2t/2026/v12i3304

Testicular Biometry as a Non-invasive Indicator of Semen Quality and Sperm Kinematics in Black Bengal Bucks

Pratyanshu Srivastava, Atul Saxena, Mukul Anand, Amrita Priyadershi, Anoop Kumar, Ankit Saran, Ashutosh Mishra, Nagendra Singh, Anuj Kumar, Jitendra Kumar Agrawal, Chetna Gangwar, Uttam Kumar Sahu, Neeraj Srivastava & Ravi Dabas · Journal of Scientific Research and Reports · 2026

Scrotal circumference (SC) is widely used as an indicator of male reproductive potential; however, its predictive value for detailed seminal and kinematic characteristics remains poorly defined in Black Bengal bucks. This study evaluated the association of testicular biometry wit...

Open access Research Article 10.9734/jsrr/2026/v32i74356