PMID- 23260028 OWN - NLM STAT- MEDLINE DCOM- 20140603 LR - 20131031 IS - 1873-2232 (Electronic) IS - 0378-4320 (Linking) VI - 137 IP - 1-2 DP - 2013 Feb TI - Improvement of conception rate in postpartum flaxseed supplemented buffalo with Ovsynch+CIDR protocol. PG - 15-22 LID - S0378-4320(12)00379-X [pii] LID - 10.1016/j.anireprosci.2012.11.012 [doi] AB - The present study was conducted on lactating Murrah buffalo to assess the effect of crushed flaxseed (a source of omega-3 fatty acids) supplementation (300g/100kg bwt/day for 60 days), over and above the routine feed, on luteolytic signal (PGF2alpha), luteal function (progesterone) and conception rate. In first experiment, on day 50 post-calving, six non-supplemented buffalo were treated to synchronize time of ovulation using an Ovsynch+Controlled Internal Drug Release (CIDR) protocol followed by intravenous oxytocin treatment (OT; 100IU) on day 15 post-ovulation. Blood samples were collected at 15min interval, 1h before to 4h after OT challenge. Thereafter, the same buffalo were supplemented with flaxseed, treated to synchronize time of ovulation starting on day 35 post-supplementation using the same protocol and subjected to OT treatment and blood sampling on day 15 post-ovulation. The PGF2alpha response was measured as the venous concentration of 13,14-dihydro-15-keto PGF2alpha (PGFM). The mean hourly concentration of PGFM subsequent to flaxseed supplemented was less (P<0.05) than in the pre-supplementation period at all the occasions. Flaxseed supplementation did not affect plasma fatty acids and other plasma metabolites except for an increase (P<0.05) in plasma cholesterol and plasma alanine transaminase. In the second experiment, 31 buffalo were randomly assigned to a control (n=16) and flaxseed supplemented (n=15) group. The latter group was supplemented with flaxseed starting from day 15 post-calving. On day 50-post-calving, buffalo of both groups were treated to synchronize time of ovulation among animals as described for the first experiment followed by artificial insemination (AI). Post-AI luteal phase plasma progesterone was greater (P<0.05) in the supplemented group compared to controls. Conception rate on day 63 post-AI was 66.7% in supplemented and 31.2% in controls (P<0.05). The present study indicated the beneficial impact of dietary supplementation of crushed flaxseed on conception rate through attenuation of luteolytic signal and improvement in post-breeding luteal profile. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Nazir, G AU - Nazir G AD - Department of Veterinary Gynaecology and Obstetrics, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India. Electronic address: drskuast266@gmail.com. FAU - Ghuman, S P S AU - Ghuman SP FAU - Singh, J AU - Singh J FAU - Honparkhe, M AU - Honparkhe M FAU - Ahuja, C S AU - Ahuja CS FAU - Dhaliwal, G S AU - Dhaliwal GS FAU - Sangha, M K AU - Sangha MK FAU - Saijpaul, S AU - Saijpaul S FAU - Agarwal, S K AU - Agarwal SK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121203 PL - Netherlands TA - Anim Reprod Sci JT - Animal reproduction science JID - 7807205 RN - 27376-76-7 (15-keto-13,14-dihydroprostaglandin F2alpha) RN - 4G7DS2Q64Y (Progesterone) RN - B7IN85G1HY (Dinoprost) SB - IM MH - Animals MH - Buffaloes/*physiology MH - Chi-Square Distribution MH - Dietary Supplements MH - Dinoprost/analogs & derivatives/blood/*metabolism MH - Estrus Synchronization/*methods MH - Female MH - Flax/*metabolism MH - Insemination, Artificial/veterinary MH - Ovulation/*physiology MH - Pregnancy MH - Progesterone/blood MH - Random Allocation MH - Seeds/*metabolism EDAT- 2012/12/25 06:00 MHDA- 2014/06/04 06:00 CRDT- 2012/12/25 06:00 PHST- 2012/04/21 00:00 [received] PHST- 2012/11/17 00:00 [revised] PHST- 2012/11/20 00:00 [accepted] PHST- 2012/12/25 06:00 [entrez] PHST- 2012/12/25 06:00 [pubmed] PHST- 2014/06/04 06:00 [medline] AID - S0378-4320(12)00379-X [pii] AID - 10.1016/j.anireprosci.2012.11.012 [doi] PST - ppublish SO - Anim Reprod Sci. 2013 Feb;137(1-2):15-22. doi: 10.1016/j.anireprosci.2012.11.012. Epub 2012 Dec 3.