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פותח על ידי קלירמאש פתרונות בע"מ -
Seasonal variations in post-partum plasma progesterone levels and conception in primiparous and multiparous dairy cows
Year:
1977
Authors :
הרץ, זאב
;
.
פולמן, ישעיהו
;
.
Volume :
51
Co-Authors:
Rosenberg, M., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Herz, Z., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Davidson, M., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Folman, Y., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Facilitators :
From page:
363
To page:
367
(
Total pages:
5
)
Abstract:
Progesterone concentrations in peripheral plasma of 18 primiparous and 34 multiparous dairy cows were determined by radioimmunoassay every 4 days, from 10 days post partum until the next conception. The interval from parturition to the first progesterone peak (> 4 ng/ml plasma) was significantly longer (P<0.01) in primiparous than in multiparous cows. The progesterone concentrations on Days 4-15 of the oestrous cycle were significantly lower (P<0.025) during the summer than in cycles occurring in winter. The conception rate during the summer was lower than in winter. In cows inseminated in summer, conception was related to the shape of the progesterone curve in the cycle preceding insemination.
Note:
Related Files :
Animal
cattle
conception
Female
fertility
methodology
parity
pregnancy
progesterone
radioisotope
season
Seasons
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23525
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:00
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Scientific Publication
Seasonal variations in post-partum plasma progesterone levels and conception in primiparous and multiparous dairy cows
51
Rosenberg, M., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Herz, Z., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Davidson, M., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Folman, Y., Inst. Anim. Sci., Agric. Res. Organ., Volcani Cent., Bet Dagan, Israel
Seasonal variations in post-partum plasma progesterone levels and conception in primiparous and multiparous dairy cows
Progesterone concentrations in peripheral plasma of 18 primiparous and 34 multiparous dairy cows were determined by radioimmunoassay every 4 days, from 10 days post partum until the next conception. The interval from parturition to the first progesterone peak (> 4 ng/ml plasma) was significantly longer (P<0.01) in primiparous than in multiparous cows. The progesterone concentrations on Days 4-15 of the oestrous cycle were significantly lower (P<0.025) during the summer than in cycles occurring in winter. The conception rate during the summer was lower than in winter. In cows inseminated in summer, conception was related to the shape of the progesterone curve in the cycle preceding insemination.
Scientific Publication
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