Sperm dosage and site of insemination in relation to fertility in bovines
Journal Title: Asian Pacific Journal of Reproduction - Year 2018, Vol 7, Issue 1
Abstract
Low sperm numbers in artificial insemination (AI)-doses are being used widely to make the best use of high genetic value bulls as well as sex-sorted semen. Sperm concentration needed for AI to obtain reasonable fertility, taking genetic value of bull and numerous others components into consideration is one of the essential constituents for successful AI breeding program. However, low sperm concentrations in AI-doses lead to reducing post-thaw viability. The reduction in viability of low sperm doses may be affected by fresh semen volume, sperm number and seminal plasma level at final dilution. Reduction in quality and fertility of low sperm doses is one of the limitations for their use in successful AI programme. Sperm number per AI required to achieve optimum fertility is one of the main crucial things to AI industry, and numerous efforts have been made in this regard. Due to great variability among bulls, sperm number per AI could be a limiting factor in achieving acceptable fertility values. Fertility of low sperm doses may vary among bulls, and non-return rates (NRRs) with low sperm doses may be determined by fertility level of bull. On the basis of individual bulls, sperm numbers in AI doses needed to be adjusted to reduce the variations in NRRs among bulls. Utilizing high fertile bulls for low sperm doses with acceptable non-return rates (NRRs) may be a way to cover a large number of bovines under AI in countries like India. Deposition site within the uterine horn may alter non return rates following inseminations with low sperm doses. Following deep-uterine inseminations, acceptable pregnancies may be achieved with low sperm doses and even if ovulation side is unknown.
Authors and Affiliations
Tushar Kumar Mohanty, Shabir Ahmad Lone, Kumaresan A, Bhakat M, Kumar R, Rubina K Baithalu, Ranjana Sinha, Adil Rasool Paray, Hanuman P Yadav, Sangram K Sahu, Ashok K Mohanty
Keywords
Related Articles
- EP ID EP407383
- DOI 10.4103/2305-0500.220977
- Views 185
- Downloads 0
Improvement of sexual behavior, sperm quantity and quality by Quercetin in streptozotocin-induced diabetic erectile dysfunction
Objective: To evaluate the effect of Quercetin (QT) on erectile dysfunction and oxidative stress in penile tissue of streptozotocin-induced diabetic rats. Methods: Two weeks after diabetes induction, QT was treated to no...
Activity of transaminase enzyme and testosterone hormone in blood of Awassi rams during different season
Objective: To monitor the levels of aspartate transaminase (AST) and alanine transaminase (ALT) enzymes and testosterone hormone in months and seasons of Iraq. Methods: In this experiment, 20 (2.0-3.5 years old) Iraqi Aw...
Seasonal variations in serum pregnancy associated glycoproteins during early pregnancy in Aardi goats in central Saudi Arabia
Objective: To accurately detect pregnancy in local Aardi goats of Saudi Arabia before day 30 of pregnancy by using serum caprine pregnancy associated glycoproteins (caPAG) concentrations and to evaluate the effects of he...
Effect of Vitex agnus-castus plant extract on polycystic ovary syndrome complications in experimental rat model
Objective: To investigate ameliorative effects of Vitex agnus-castus (VAC) and VAC containing pharmaceutical supplement (VPS) against polycystic ovary syndrome (PCOS). Methods: PCOS in the rats was induced by daily admin...
Effect of epidermal growth factor on buffalo frozen spermatozoa biometry and metabolic activity
Objective: To assess the effects of epidermal growth factor (EGF) on the Egyptian buffalo bull frozen semen, EGF was incorporated at 0 (control), 50, 100, 200 and 400 ng/mL of extender (Bioxcell®). Methods: Semen feature...