Effect of Pre-ovulatory Follicular Size and Body Condition Score on Pregnancy Rate following Ovsynch Protocol in Post-partum Anestrus Buffaloes
نویسندگان
چکیده
Effect of diameter of pre-ovulatory follicle (POF) and body condition score (BCS) of buffaloes on pregnancy rate following ovsynch-TAI were studied in 100 post-partum anestrus buffaloes. The size of POF was determined through sonography on day 10 of protocol. BCS of buffaloes were estimated at the time of AI. Pregnancy was con rmed per-rectally on day 60 post-AI. Pregnancy rate in buffaloes with small (10-12mm), medium (>12-14mm) and large (>14mm) size of POF was 0%, 62.5% and 90% (p<0.05), respectively. POF size was 10.2±0.3mm (n=13) in poor BCS, 13.40±0.2mm (n=70) in Good BCS and 12.6±0.3mm (n=17) in over conditioned buffaloes. Pregnancy rate of Poor BCS (<2.0-2.5), Good (3.0-3.5) and Over conditioned (≥4.0) buffaloes was 0%, 62.8% and 47 % (p<0.05), respectively. In conclusion, the greater diameter of POF and better BCS in buffaloes has positive impact on pregnancy success.
منابع مشابه
Influence of controlled breeding techniques on fertility and plasma progesterone, protein and cholesterol profile in true anestrus and repeat breeding buffaloes
Aim: The aim was to evaluate the estrus response, conception rate and plasma profile of progesterone, protein and cholesterol following use of different hormonal protocols in anestrus and repeat breeding buffaloes. Materials and Methods: This study was carried out on 20 true anestrus, 20 repeat breeders, and 10 normal cyclic buffaloes. Ten anestrus buffaloes each were treated with standard cont...
متن کاملComparative efficacy of E-17β and GnRH administration on day 0 of a controlled internal drug release (CIDR) based protocol on synchrony of wave emergence, ovulation and conception rates in Murrah buffalos (Bubalus bubalis)
The study was undertaken to compare the efficacy of an estradiol-17β + CIDR based protocol with the conventional ovsynch + CIDR based protocol for synchrony of wave emergence and ovulation in Murrah buffalos. In group I (n=25), on day 0 (beginning of experiment), buffaloes were administered a CIDR device (1.38 g P4) and concurrently received 1.5 mg E-17β. On day 9, the CIDR was removed and a pr...
متن کاملFertility response in postpartum anoestrus buffaloes (Bubalus bubalis) using modified Ovsynch based timed insemination protocols
BACKGROUND AND AIM Suboestrus constitutes the largest factor responsible for poor reproductive efficiency in buffaloes. Therefore, oestrus synchronization (OS) and fixed-time artificial insemination (AI) is considered an alternative approach to enhance reproductive efficiency in buffaloes. Thus, the present study was carried out to study the efficacy of modified Ovsynch protocol with fixed time...
متن کاملMilk progesterone enzyme-linked immunosorbent assay as a tool to investigate ovarian cyclicity of water buffaloes in relation to body condition score and milk production
BACKGROUND Application of assisted reproductive technologies in buffaloes is limited to some extent by farmers' inability to detect oestrus because of its poor expression. The present study aimed at investigating reliability of a milk progesterone enzyme-linked immunosorbent assay (ELISA) to assess the ovarian cyclicity during post partum, oestrus and post-breeding periods in water buffaloes. ...
متن کاملتأثیر زمان های مختلف شروع پروتکل اوسینک پس از تلقیح بر شاخص های همزمانی و باروری گاوهای هلشتاین
The objective of this study was to consider effect of three different time of starting Ovsynch after Artificial Insemination, on synchrony parameters, pregnancy loss and fertility in Holstein cows. Multiparous cows (> 30 Kg/d, n = 450) randomly assigned to one of three groups. Groups according to time of starting Ovysnch were as follows: 1- Starting Ovsynch on day 25 after AI, 2- Starting Ovsyn...
متن کامل