000 03284cab a2200289Ia 45 0
999 _c52143
_d52143
001 u199452
003 SIRSI
008 101222s2004 ua ss b eng d
040 _aEAL
041 _aeng
_bara
090 _aART AVMJ V50 No101 24
100 1 _aFahmy , S.
_91651
240 1 0 _aAssiut veterinary medical journal, 2004 v. 50 (101)
_h[electronic resource].
245 1 0 _aConcentration of progesterone, estradiol-17B, calcium, phosphorus and Ca/P ratio in blood serum of friesian cows during late pregnancy, parturition and postpartum period in upper Egypt
_h[electronic resource].
246 1 5 _aمستوى هرموني البروجستيرون الأستراديول 17 بيتا الكالسيوم و الفوسفور و النسبة بين الكالسيوم و الفوسفور في سيرم دم الأبقارالفريزيان خلال فترات الحمل الولادة و ما بعد الولادة في صعيد مصر.
300 _ap.293-303.
504 _aIncludes references.
520 _aTwelve Friesian cows were used to study the serum changes of progesterone, estradiol-17P, calcium and phosphorus concentrations, in the periparturient. Serum progesterone level showed little changes among weeks 9,7 and S prepartum. Then the levels decreased significantly (P<0.05 weeks 9, 7, S and 3 to reach a minimum level (P<0.01) at the timing parturition. The serum progesterone level kept minimum « 1.0 pg/ml) up to weeks Sand 9 after parturition in early and later conceived respectively. Then the level started to increase about 1 pg/ml 9 week after birth in early conceived. Serum estradiol 1 7p increased progressively from 4.19 ± 0.7pg/ml weeks 9 before birth to a beak (99.53 ± 25.98pg/m1) on the day of parturition (P<0.05), the differences among weeks 9th to 5th prepartum were non significant Then the levels sharply drop to 2.83 ± 0.31 and 2.1 ± 0.27pg/ml one week after birth (P<O.OS) in early and later conceived respectively. The level remained low throughout the 9 weeks after birth in both early and later conceived. Calcium and phosphorus levels were highly (P<0.05) in prepartum, and then steadily decreased till parturition. In postpartum, there was general trend that the level of calcium increased gradually to reach maximum level at 9th week in both early and later conceived. While phosphorus level increased gradually to reach maximum at 7th and 9th weeks in early and later conceived respectively. changes in Ca/p ratio in the cow was not significantly from 9th to 3rd weeks prepartum. While the Ca/p ratio dropped drastically (P<0.01) at parturition. Postpartum Ca/p ratio increased gradually advances reached maximum ratio at 9th week postpartum in early-conceived group. On the other hand, the Ca/P ratio in late conceived group reached maximum at 7th week postpartum. Key words: Cows, peri parturient, progesterone, Estradiol-17B, Calcium, Phosphorus.
546 _aSummary in Arabic.
650 0 _aCows
_xReproduction.
_91754
650 0 _aCows
_xFertility.
_91755
650 0 _aProgesterone
_xPhysiological effect.
_9593
650 0 _aEstradiol.
_91756
773 0 _tAssiut Veterinary Medical Journal.
_g2004.v.50(101)
_x1012-5973
_7nnas
_wu181356
856 4 0 _uhttp://nile.enal.sci.eg/EALE/2004/AVMJ/5004/101/293.pdf
_zFull Text Article.
942 _cAR
_2lcc