scholarly journals Uterine Involution and Ovarian Activity in Postpartum Holstein Dairy Cows. A Review

2018 ◽  
Vol 1 (4) ◽  
pp. 29-40 ◽  
Author(s):  
Mohammed Ahmed Elmetwally
Keyword(s):  
Dairy Cows ◽  
Postpartum Period ◽  
Detrimental Effect ◽  
Ovarian Activity ◽  
Main Determinant ◽  
Uterine Involution ◽  
Subsequent Fertility ◽  
Reproductive Life ◽  
The Individual ◽  
Ovarian Cycles

Following parturition in the cow, there is a significant period of sexual quiescence of variable length. This period of reproductive quiescence was found to be longer in suckling or intensively milked animals.This acyclic period is generally considered as the postpartum anoestrous period. The postpartum period constitutes an important period in the reproductive life of dairy cows because of its enormous influence upon subsequent fertility. The entire postpartum period, puerperium, is defined as the period from parturition until the genital organs return to its normal physiological and histological condition, as in normal non-gravid state. They added that any extension of the puerperium in cows might have a detrimental effect on the reproductive performance of the individual animal. Thus, the main determinant of this period is essentially dependent on the resumption of normal ovarian cycles, the manifestation of estrus behaviour and conception following insemination.

scholarly journals The puerperium in dairy cows: ovarian activity, uterine involution and follicular dynamics

2015 ◽  
Vol 13 ◽  
Author(s):  
José Carlos Dos Santos Breda ◽  
Luiz Ernandes Kozicki
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Postpartum Period ◽  
Reproductive Tract ◽  
Ovarian Activity ◽  
Non Invasive ◽  
The Past ◽  
Uterine Involution ◽  
Follicular Dynamics

The study of ovarian follicular dynamics (OFD) and other changes in the bovine reproductive tract has developedsignificantly over the past two decades, primarily due to the use of non-invasive investigative approaches suchas ultrasound. Advances in ultrasound examinations have provided a better understanding of ovarian activity,uterine involution, oviducts status, and other segments of the reproductive tract in the bovine postpartumperiod. Procedures including tracking of the reproductive tract have likewise aided in the development of newmethodologies and techniques to improve reproductive performance in cattle. The aim of this review was tosummarize knowledge regarding the reproductive tract in dairy cows during the postpartum period.

scholarly journals Relationship Between Postpartum Disorders And Pregnancy Losses and Subsequent Fertility of Dairy Cows

2012 ◽  
Vol 56 (3) ◽  
pp. 287-292
Author(s):  
Janusz Zbylut ◽  
Marek Gehrke ◽  
Edward Malinowski
Keyword(s):  
Dairy Cows ◽  
Genital Tract ◽  
Ovarian Activity ◽  
Foetal Loss ◽  
Subsequent Fertility ◽  
Holstein Friesian ◽  
Postpartum Disorders ◽  
The Relationship ◽  
Calving Intervals ◽  
Observation Period

Abstract The aim of the study was to find the relationship between some postpartum disorders and pregnancy losses (PL), and the influence of PL on further fertility of Holstein-Friesian dairy cows. The 1,056 pregnancies and 906 calving intervals (CI) of 378 cows during the nine-year observation period were analysed. The average milk yield during this period increased from 7,500 to 10,500 kg/305 d of lactation. All cows up to 4 weeks after calving were gynecologically examined and cases of genital tract disorders were recorded and treated. Artificial inseminations (AI) were made using commercial frozen/thawed semen. In cows with silent ovulation, oestrus was induced by injection of PGF2α or programmes using PGF2α and GnRH, or hCG were applied. Pregnancy was diagnosed with the use of ultrasonography or foetal membrane slip only from 30 and 42 d after service, respectively, and re-diagnosed between 70 and 90 d after AI. The cases of „early foetal loss” up to 90 d and „mid-to-late PL” between 91 and 260 d after AI were recorded. Endometritis was noted in 31.8%, ovarian cysts in 8.5%, whereas ovarian inactivity in 4.6% of cows. Early PL was observed in 5.2%, whereas mid-to-late PL in 6.8% of cows (total 12%). From all analysed factors, the influence of delayed or periodical lack of ovarian activity was significant with regard to early PL (P=0.029). The probability of early PL increased when besides the diagnosis of ovarian inactivity, AI was made following an induced oestrus (P=0.003). CI for cows, which did not lost pregnancy amounted 442.9 d. The early, mid-to-late and multiple PL extended the CI to 579.6, 661.1 and 657.7 d, respectively (P<0.05). Concurrently, CI for cows with “early foetal loss” was significantly shorter comparing to cows with “mid-to-late foetal loss” (579.6 d vs.661.1 d; P<0.05). On average 2.6 inseminations for one pregnancy were needed, and each PL increased the AI index. Significant differences were stated after early and multiple foetal losses (5.2 and 5.1 vs. 2.6; P<0.05).

scholarly journals The impact of ecbolic therapy in the early postpartum period on uterine involution and reproductive health in dairy cows

2019 ◽  
Vol 81 (3) ◽  
pp. 491-498 ◽  
Author(s):  
Cyril P. STEPHEN ◽  
Walter H. JOHNSON ◽  
Stephen J. LEBLANC ◽  
Robert A. FOSTER ◽  
Tracey S. CHENIER
Keyword(s):  
Reproductive Health ◽  
Dairy Cows ◽  
Postpartum Period ◽  
Early Postpartum Period ◽  
Uterine Involution ◽  
Early Postpartum ◽  
The Impact

Factors in the resumption of ovarian activity and uterine involution in postpartum dairy cows

1995 ◽  
Vol 38 (3) ◽  
pp. 203-214 ◽  
Author(s):  
A El-Din. Zain ◽  
T Nakao ◽  
M Abdel Raouf ◽  
M Moriyoshi ◽  
K Kawata ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Ovarian Activity ◽  
Uterine Involution

Effects of calving-related disorders on prostaglandin, calcium, ovarian activity and uterine involution in postrartum dairy cows

1994 ◽  
Vol 42 (1) ◽  
pp. 183-203 ◽  
Author(s):  
C.A. Risco ◽  
M. Drost ◽  
W.W. Thatcher ◽  
J. Savio ◽  
M.J. Thatcher
Keyword(s):  
Dairy Cows ◽  
Ovarian Activity ◽  
Uterine Involution

Abnormal patterns of ovarian activity in dairy cows and their relationships with reproductive performance

1980 ◽  
Vol 30 (2) ◽  
pp. 177-188 ◽  
Author(s):  
D. Claire Bulman ◽  
P. D. P. Wood
Keyword(s):  
Luteinizing Hormone ◽  
Dairy Cows ◽  
Reproductive Performance ◽  
Profile Analysis ◽  
Single Injection ◽  
Ovarian Activity ◽  
Luteinizing Hormone Releasing Hormone ◽  
Treatment Groups ◽  
Intravaginal Device ◽  
Ovarian Cycles

ABSTRACTProgesterone profiles were obtained from 533 dairy cows during the interval from calving to the re-establishment of pregnancy by twiceweekly radioimmunoassay of milk progesterone. The importance of abnormal patterns of ovarian activity on herd fertility was determined. Animals were divided into five categories based on profile analysis: A, normal; B, delayed start to ovarian cycles; C, cessation of cycles; D, prolonged luteal activity; and E, silent oestrus. Animals in categories B to E were subdivided into treatment groups: categories B and C either (i) untreated controls, (ii) single injection 0·5 mg luteinizing hormone-releasing hormone (Hoechst) or (iii) progesterone-releasing intravaginal device (Abbott Laboratories Ltd) inserted for 14 days; categories D and E either (i) untreated controls or (ii) single injection 0-5 mg cloprostenol (Imperial Chemical Industries).The proportion of cows in each category was: A 77·5%; B 4·9%; C 5·1%; D 1·9%; and E 10·7%. The incidence of ‘normal’ cows was 75% (first lactation), 80% (2nd to 5th lactations) and 69% (5th to 11th lactations). For normal cows (no. = 413) the interval to the start of cyclicity varied significantly with season but was not correlated with either the intervals to first insemination or to conception. In categories B to E the open period, the number of services per conception, and the days from first insemination to conception were greater than in category A, but only in category C were any differences significant. None of the treatments reduced calving-toconception intervals.

scholarly journals Ovarian activity in beef and dairy cows with prolonged postpartum period and heifers that fail to conceive

2009 ◽  
Vol 42 (4) ◽  
pp. 607-615 ◽  
Author(s):  
N. Yimer ◽  
Y. Rosnina ◽  
H. Wahid ◽  
A. A. Saharee ◽  
K. C. Yap ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Postpartum Period ◽  
Ovarian Activity
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