13-Title: Effect of CIDR – PGF2alpha based estrus synchronization protocols on estrus response, ovulation and conception rate in dairy cows
Authors: Popandeer Kour and Madhumeet Singh
Source: Ruminant Science (2024)-13(1):87-90.

Abstract

How to cite this manuscript: Kour Popandeer and Singh Madhumeet (2024). Effect of CIDR – PGF2alpha based estrus synchronization protocols on estrus response, ovulation and conception rate in dairy cows. Ruminant Science 13(1):87-90.
Abstract
The present study was conducted to assess the efficacy of the CIDR-based protocol applied during the early post-partum phase in the induction of estrus and to record the effect of the protocol on ovulation and conception rate in dairy cows (N=20) during the early post-partum phase i.e. day 35. The selected cows were randomly distributed among 3 groups. Treatment group 1 (CIDR+FTAI) consisted of 7 cows, each receiving a Controlled Internal Drug Release (CIDR) insert for 9 days only whereas treatment group 2 (CIDR-PGF2alpha+FTAI) comprised of 6 cows in which resynchronization with CIDR from day 18-26 during subsequent mid-luteal phase after CIDR removal and cows in the control group (n=7) did not receive any treatment. Mean diameter of ovarian follicles on different days of protocols in CIDR treatment group 2 were numerically greater than the treatment group 1. Also, duration of the first behavioural estrus was non-significantly lower (p<0.05) in CIDR treatment groups whereas the days open were numerically lower in CIDR+FTAI group only as compared to control group cows. The fluoroquinolones (Levofloxacin, ofloxacin and Enrofloxacin) were recorded as the most sensitive as antimicrobials in vitro whereas Ampilcillin, Amoxycillin and Penicillin were most resistant. References Bhoi DB, Sutaria TV, Suthar DN and Dadawala AI (2013). Antibiotic sensitivity pattern of repeat breeder cow cervico-vaginal mucous. Ruminant Science 2(1):71-72. Darwash AO, Lamming GE and Royal MD (2001). A protocol for initiating oestrus and ovulation early post-partum in dairy cows. Animal Science 72:539-546. Dudi V, Mehta JS, Chaudhary AK, Kumar Pramod, Kumar Amit and Ruhil Swati (2017). Efficacy of different estrus synchronizing protocols on estrus induction in postpartum lactating dairy cows. Ruminant Science 6(2):337-340. Földi J, Kulcsar M, Pecsi A, Huyghe B, de Sa C, Lohuis JA, Cox P and Huszenicza G (2006). Bacterial complications of postpartum uterine involution in cattle. Animal Reproduction Science 96:265-281. Grant JK, Abreu FM, Hojer NL, Fields SD, Perry BL and Perry GA (2011). Influence of inducing luteal regression before a modified controlled internal drug-releasing device treatment on control of follicular development. Journal of Animal Science 89:3531-3541. Gumen A and Wiltbank MC (2005). Length of progesterone exposue needed to resolve large follicle anovular condition indaidy cows. Theriogenology 63:202-218. Kumar Amit, Mehta JS, Ruhil Swati and Purohit GN (2018). Effects of different estrous synchronization protocols on estrus and subsequent fertility in cycling cows. Ruminant Science 7(1):83-86. Kumar Ankesh and Kumar Ajeet (2021). Study on comparison of different oestrus synchronization/induction protocols in anoestrus buffaloes. Ruminant Science 10(2):333-336. Madushanka DNN, Ranasingha VM, Bandara AMS, Mayurawansha WRAS and Magamage MPS (2016). Body condition score and locomotion score help to predict reproductive and health performances of dairy cattle. Ruminant Science 5(2):179-186. Patel SB, Chaudhary SS, Puri Gopal and Singh VK (2022). Blood biochemical and oxidative stress profile of Surti goats under estrous synchronization. Ruminant Science 11(2):301-304. Perry GA, Smith MF, Lucy MC, Green JA, Parks TE, MacNeil MD, Roberts AJ and Geary TW (2005). Relationship between follicle size at insemination and pregnancy success. Proceedings of the National Academy of Sciences of the United States 102:5268-5273. Pursley JR, Silcox RW and Wiltbank MC (1998). Effect of time of artificial insemination on pregnancy rates, calving rates, pregnancy and gender ratio after synchronization of ovulation in lactating dairy cows. Journal of Dairy Science 81:2139-2144. Rasool F, Lone FA and Banday MN (2020). Reproductive response and progesterone profile of aged Corriedale ewes following different hormone based oestrous synchronization schemes. Ruminant Science 9(1):77-82. Shambhavi, Verma Atul Kumar, Tripathi Ashutosh, Shukla Manish Kumar, Kumar Suresh, Ranjan Koushlesh, Verma Harshit and Kapoor Neelesh (2023). Effect of rheological properties of cervico vaginal mucus on conception rate in cattle. Ruminant Science 12(1):121-126. Sheldon IM, Noakes DE, Rycroft AN, Pfeiffer DU and Dobson H (2002). Influence of uterine bacterial contamination after parturition on ovarian dominant follicle selection and follicle growth and function in cattle. Reproduction 123:837-45. Shukla MK and Garg Abhishek (2012). Efficacy of different route of administration and doses of dinoprost in estrus induction/ synchronization in subestrus Murrah buffaloes. Ruminant Science 1(1):63-65. Singh S, Shukla SN and Gupta KK (2019). Fertility response to insulin modified Ovsynch protocol in postpartum acyclic buffaloes. Ruminant Science 8(1):45-48. Stevenson JS and Lamb GC (2016). Contrasting effects of progesterone on fertility of dairy and beef cows. Journal of Dairy Science 99:5951-5964.