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Incorporation of dietary n-3 fatty acids into ovarian compartments in dairy cows and the effects on hormonal and behavioral patterns around estrus
Year:
2011
Source of publication :
Reproduction
Authors :
Moallem, Uzi
;
.
Zachut, Maya
;
.
Volume :
141
Co-Authors:
Zachut, M., Department of Ruminant Science, Institute of Animal Sciences, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel, Department of Animal Science, Robert H Smith Faculty of Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Arieli, A., Department of Animal Science, Robert H Smith Faculty of Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Moallem, U., Department of Ruminant Science, Institute of Animal Sciences, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Facilitators :
From page:
833
To page:
840
(
Total pages:
8
)
Abstract:
The objective of this study was to examine the incorporation of dietary n-3 fatty acids (FAs) into ovarian compartments and the effects on hormonal and behavioral patterns around estrus. Multiparous 256-day pregnant cows were fed either a standard diet both prepartum and postpartum (PP) (control; n=22) or supplemented with extruded flaxseed (E-FLAX) providing C18:3n-3 at 172.2 and 402.5 g/day per cow prepartum and PP respectively (n=22). The estrous cycle was synchronized, and at day 7 of the cycle, the cows were injected with prostaglandin F2α (PGF2α) and then subjected to 5 days of intensive examination. Compared with those in the control, in the E-FLAX group, the interval from PGF2α injection to behavioral estrus peak tended to be longer (3.6 h; P < 0.1), that to estradiol (E 2) peak was 6.5 h longer (P < 0.03), and that to LH peak tended to be longer (5.3 h; P < 0.07). The durations of behavioral estrus and E 2 surge were longer, and the area under the E2 curve was greater in the E-FLAX cows. Afterward, 7-8 days following behavioral estrus, follicular fluids (FFs) from >7 mm follicles were aspirated. The proportions of n-3 FA increased in plasma, FF, and granulosa cells in the E-FLAX group. The concentrations of PGE2 in the E2-active follicles tended to be lower in the E-FLAX cows (P < 0.06). In conclusion, several modifications in hormonal and behavioral estrus patterns were demonstrated in cows fed n-3 FA, which might be attributed to alterations in membrane FA composition and partly mediated by lower PGE2 synthesis. © 2011 Society for Reproduction and Fertility.
Note:
Related Files :
Animals
cattle
dairy cattle
Female
pregnancy
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More details
DOI :
10.1530/REP-10-0518
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30019
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:51
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Scientific Publication
Incorporation of dietary n-3 fatty acids into ovarian compartments in dairy cows and the effects on hormonal and behavioral patterns around estrus
141
Zachut, M., Department of Ruminant Science, Institute of Animal Sciences, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel, Department of Animal Science, Robert H Smith Faculty of Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Arieli, A., Department of Animal Science, Robert H Smith Faculty of Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Moallem, U., Department of Ruminant Science, Institute of Animal Sciences, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Incorporation of dietary n-3 fatty acids into ovarian compartments in dairy cows and the effects on hormonal and behavioral patterns around estrus
The objective of this study was to examine the incorporation of dietary n-3 fatty acids (FAs) into ovarian compartments and the effects on hormonal and behavioral patterns around estrus. Multiparous 256-day pregnant cows were fed either a standard diet both prepartum and postpartum (PP) (control; n=22) or supplemented with extruded flaxseed (E-FLAX) providing C18:3n-3 at 172.2 and 402.5 g/day per cow prepartum and PP respectively (n=22). The estrous cycle was synchronized, and at day 7 of the cycle, the cows were injected with prostaglandin F2α (PGF2α) and then subjected to 5 days of intensive examination. Compared with those in the control, in the E-FLAX group, the interval from PGF2α injection to behavioral estrus peak tended to be longer (3.6 h; P < 0.1), that to estradiol (E 2) peak was 6.5 h longer (P < 0.03), and that to LH peak tended to be longer (5.3 h; P < 0.07). The durations of behavioral estrus and E 2 surge were longer, and the area under the E2 curve was greater in the E-FLAX cows. Afterward, 7-8 days following behavioral estrus, follicular fluids (FFs) from >7 mm follicles were aspirated. The proportions of n-3 FA increased in plasma, FF, and granulosa cells in the E-FLAX group. The concentrations of PGE2 in the E2-active follicles tended to be lower in the E-FLAX cows (P < 0.06). In conclusion, several modifications in hormonal and behavioral estrus patterns were demonstrated in cows fed n-3 FA, which might be attributed to alterations in membrane FA composition and partly mediated by lower PGE2 synthesis. © 2011 Society for Reproduction and Fertility.
Scientific Publication
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