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EFFICACY OF MODIFIED OVSYNCH PROTOCOL FOR MANAGEMENT OF POSTPARTUM ANESTRUS IN BUFFALOES

KrishiKosh

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Title EFFICACY OF MODIFIED OVSYNCH PROTOCOL FOR MANAGEMENT OF POSTPARTUM ANESTRUS IN BUFFALOES
 
Creator SINGH, PUSHPENDRA
 
Contributor Shukla, Dr. S.N.
 
Subject ovaries,buffaloes
 
Description Postpartum anestrus is a functional disorder of ovaries characterized by cessation of sexual cycle and psychic manifestation of estrus. As the GnRH and insulin has been shown to have a synergistic effect on follicular development and maturation to induce estrus and ovulation thus, the modified Ovsynch protocol with insulin was considered to be utilized for a better fertility response in anestrus buffaloes. With the above concept, the present investigation was undertaken with the objectives to study the incidence of postpartum anestrus in dairy buffaloes of Jabalpur and the therapeutic efficacy of modified Ovsynch protocol for the management of postpartum anestrus in buffaloes.
To study the incidence of postpartum anestrus, total 513 postpartum buffaloes with the history of anestrus were examined per-rectally and the overall incidence of postpartum anestrus was recorded to be 35.02 per cent in organized dairy farms of Jabalpur, during the period of six months (October-2012 to March-2013). In the present study, the anestrus was observed to be higher during March (26.51%) and October (22.61%) as compared to other months of study i.e. November (14.81%), December (12.48%), January (11.50%) and February (12.09%). On clinical examination, the anestrus buffaloes were diagnosed as true anestrus (60.62%), silent/un-observed estrus (21.05%) and other patho-physiological conditions (18.33%). To study the fertility response, sixty postpartum buffaloes with the history of non-return to estrus for two months or more after calving were selected and randomly divided into 5 groups, each comprising of twelve animals (n=12). Animals of Group-I, received original Ovsynch protocol however, Group-II, Group-III and Group-IV received modified Ovsynch protocols. In Group-II, second dose of GnRH was partially replaced by Insulin while in Group-III, it was completely replaced by Insulin. In Group-IV, Insulin was given with the start of modified Ovsynch protocol without second dose of GnRH. The serum progesterone was also estimated before (day-0) and after (day-14) the treatment for ascertaining the ovarian activities of the animals. The estrus induction rate in anestrus buffaloes was 41.67, 75.00, 66.67 and 50.00% with the mean time taken for onset of estrus as 24.0±1.871, 23.0±2.667, 15.5±2.260 and 15.3±2.499 days along with the conception at induced estrus as 60.00, 88.89, 75.00 and 83.33%, in Groups-I, II, III and IV, respectively. However, none of the animals in control group (Group-V) exhibited estrus. The mean serum progesterone concentrations (ng/ml) ranged from 2.533±0.464 to 5.015±0.762 and 2.135±0.724 to 3.188±1.034, respectively in pre and post-treatment groups. The serum progesterone concentration before treatment was significantly higher as compared to post treatment in Group-II, which was further correlated by higher rate of estrus induction and conception rate.
Present study revealed higher incidence of total anestrus and clinical true anestrus in buffaloes especially during the transition months of the season i.e. March and October. The results of fertility response were good and comparable in all the modified protocols however, better results were observed in protocol with partial replacement of GnRH by insulin.
 
Date 2017-01-20T14:14:28Z
2017-01-20T14:14:28Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/97408
 
Language en
 
Format application/pdf
 
Publisher Nanaji Deshmukh Veterinary Science University, Jabalpur (M.P.)