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T. Nakao, M. Moriyoshi, K. Kawata (1992)
The effect of postpartum ovarian dysfunction and endometritis on subsequent reproductive performance in high and medium producing dairy cowsTheriogenology, 37
(2000)
Comparison of different methods of diagnosis of cystic ovarian disease in cattle and an assessment of its treatment with a progesteronereleasing intravaginal device
H. Shrestha, T. Nakao, Toshihiko Suzuki, M. Akita, Tsuneo Higaki (2005)
Relationships between body condition score, body weight, and some nutritional parameters in plasma and resumption of ovarian cyclicity postpartum during pre-service period in high-producing dairy cows in a subtropical region in Japan.Theriogenology, 64 4
W. Butler (2003)
Energy balance relationships with follicular development, ovulation and fertility in postpartum dairy cows☆Livestock Production Science, 83
H. Shrestha, T. Nakao, Toshihiko Suzuki, Tsuneo Higaki, M. Akita (2004)
Effects of abnormal ovarian cycles during pre-service period postpartum on subsequent reproductive performance of high-producing Holstein cows.Theriogenology, 61 7-8
J. Stevenson (2001)
A review of oestrous behaviour and detection in dairy cowsBSAP Occasional Publication, 26
G. Opsomer, Y. Gröhn, J. Hertl, M. Coryn, H. Deluyker, A. Kruif (2000)
Risk factors for post partum ovarian dysfunction in high producing dairy cows in Belgium: a field study.Theriogenology, 53 4
S. Beam, W. Butler (1998)
Energy balance, metabolic hormones, and early postpartum follicular development in dairy cows fed prilled lipid.Journal of dairy science, 81 1
(1999)
Ketosis. In: Howard JL, Smith RA, Current veterinary therapy 4: food animal practice
R. Douthwaite, H. Dobson (2000)
Comparison of different methods of diagnosis of cystic ovarian disease in cattle and an assessment of its treatment with a progesterone-releasing intravaginaI deviceVeterinary Record, 147
F. López-Gatius (2003)
Is fertility declining in dairy cattle? A retrospective study in northeastern Spain.Theriogenology, 60 1
G. Opsomer, M. Coryn, H. Deluyker, A. Kruif (1998)
An Analysis of Ovarian Dysfunction in High Yielding Dairy Cows After Calving Based on Progesterone ProfilesReproduction in Domestic Animals, 33
D. Whitaker, W. Goodger, M. Garcia, B. Perera, F. Wittwer (1999)
Use of metabolic profiles in dairy cattle in tropical and subtropical countries on smallholder dairy farms.Preventive veterinary medicine, 38 2-3
J. Ferguson, D. Galligan, N. Thomsen (1994)
Principal descriptors of body condition score in Holstein cows.Journal of dairy science, 77 9
W. Butler (1998)
Review: effect of protein nutrition on ovarian and uterine physiology in dairy cattle.Journal of dairy science, 81 9
M. Lucy, C. Staples, F. Michel, W. Thatcher (1991)
Energy balance and size and number of ovarian follicles detected by ultrasonography in early postpartum dairy cows.Journal of dairy science, 74 2
Mojtaba Kafi, S. Nazifi, R. Bagheri-Nejad, M. Rahmani (2006)
The effects of ketoprofen on ovarian function in dairy cowsComparative Clinical Pathology, 15
W. Thatcher, T. Bilby, J. Bartolome, F. Silvestre, C. Staples, J. Santos (2006)
Strategies for improving fertility in the modern dairy cow.Theriogenology, 65 1
M. Lucy (2001)
Reproductive loss in high-producing dairy cattle: where will it end?Journal of dairy science, 84 6
(2000)
A review of estrous behavior and detection in dairy cows. In: Diskin MG (ed) Proceedings of the BSAS Occasional Meeting: fertility in the high-producing dairy cow (Occasional publication
V. Taylor, A. Hattan, E. Bleach, D. Beever, D. Wathes (2001)
Reproductive function in average and high yielding dairy cowsBSAP Occasional Publication, 26
W. Butler, R. Smith (1989)
Interrelationships between energy balance and postpartum reproductive function in dairy cattle.Journal of dairy science, 72 3
T. Duffield, D. Sandals, K. Leslie, K. Lissemore, B. McBride, J. Lumsden, P. Dick, R. Bagg (1998)
Effect of prepartum administration of monensin in a controlled-release capsule on postpartum energy indicators in lactating dairy cows.Journal of dairy science, 81 9
G. Lamming, A. Darwash (1998)
The use of milk progesterone profiles to characterise components of subfertility in milked dairy cows.Animal reproduction science, 52 3
H. Shrestha, T. Nakao, Tsuneo Higaki, Toshihiko Suzuki, M. Akita (2004)
Resumption of postpartum ovarian cyclicity in high-producing Holstein cows.Theriogenology, 61 4
J. Pryce, M. Royal, P. Garnsworthy, I. Mao (2004)
Fertility in the high-producing dairy cow ☆Livestock Production Science, 86
(2002)
Corpus luteum function and early embryonic death in the bovine
S. Sangsritavong, D. Combs, R. Sartori, L. Armentano, M. Wiltbank (2002)
High feed intake increases liver blood flow and metabolism of progesterone and estradiol-17beta in dairy cattle.Journal of dairy science, 85 11
D. Wolfenson, Z. Roth, R. Meidan (2000)
Impaired reproduction in heat-stressed cattle: basic and applied aspects.Animal reproduction science, 60-61
L. Hansen (2000)
Consequences of selection for milk yield from a geneticist's viewpoint.Journal of dairy science, 83 5
H. Lopez, L. Satter, M. Wiltbank (2004)
Relationship between level of milk production and estrous behavior of lactating dairy cows.Animal reproduction science, 81 3-4
F. Rensis, R. Scaramuzzi (2003)
Heat stress and seasonal effects on reproduction in the dairy cow--a review.Theriogenology, 60 6
R. Youngquist, W. Threlfall (2006)
Current therapy in large animal theriogenology
M. Royal, G. Mann, A. Flint (2000)
Strategies for reversing the trend towards subfertility in dairy cattle.Veterinary journal, 160 1
(1998)
Effect of protein nutrition on ovarian and uterine physiology in dairy cattle: a review
H. Dobson, R. Smith (2000)
What is stress, and how does it affect reproduction?Animal reproduction science, 60-61
M. Royal, A. Darwash, A. Flint, R. Webb, J. Woolliams, G. Lamming (2000)
Declining fertility in dairy cattle: changes in traditional and endocrine parameters of fertility.Animal Science, 70
P. Rajala-Schultz, G. Frazer (2003)
Reproductive performance in Ohio dairy herds in the 1990s.Animal reproduction science, 76 3-4
S. Washburn, W. Silvia, C. Brown, Ben McDaniel, A. McAllister (2002)
Trends in reproductive performance in Southeastern Holstein and Jersey DHI herds.Journal of dairy science, 85 1
J. Boyd, S. Omran (1991)
Diagnostic ultrasonography of the bovine female reproductive tractIn Practice, 13
J. Stevenson (2007)
CHAPTER 35 – Clinical Reproductive Physiology of the Cow
The aim of the present study was to investigate the ovarian activity in high and average producing Holstein cows under heat stress conditions (temperature–humidity index [THI]=81.5 ± 3.9). Cows were kept in free-stall barns and fed a total mixed ration consisting mainly of alfalfa, corn silage, beet pulp, cotton seed, soybean, corn and barley. Forty high producing (HP, mean 305-day fat-corrected milk [FCM] = 8707.3 kg) and 30 average producing (AP, FCM = 6115.1 kg) multiparous healthy (free of detectable reproductive disorders) Holstein cows were monitored from 14 days before to 70 days after calving. Transrectal ultrasound scanning was performed twice weekly from 7 to 65 days postpartum. Blood samples were also collected twice weekly to measure serum progesterone and biweekly to detect serum β-hydroxybutyrate (βHB) and non-esterified fatty acid (NEFA) concentrations. Body condition score (BCS) was taken biweekly after calving. Cows were observed visually four times a day to determine the duration of standing estruses. Classification of the serum progesterone profiles revealed a non-significant difference between HP and AP cows with abnormal ovarian activity (63.6% [21/33] and 46.2% [12/26], respectively, p > 0.05). The highest type of abnormal ovarian activity was delayed first postpartum ovulation 36.4% (12/33) in HP and 38.5% (10/26) in AP cows (p > 0.05). The lowest type of abnormality was the cessation of ovarian activity in HP and AP cows, 3.0% (1/33) vs 3.8% (1/26), respectively. The mean concentrations of both metabolites in HP cows were greater than AP cows at any time after calving (NEFA and βHB [p > 0.05]). There was significant difference in estrous duration between groups ([mean±SD] 6.1 ± 2.7 h in HP and 10.5 ± 2.9 h in AP cows, P < 0.05). The loss of body condition score (BCS loss >0.5) significantly affected calving to first detected estrus interval in HP cows (P < 0.05), whereas calving to first detected estrus interval was not significantly affected in AP cows. The most important abnormality of ovarian activity was delayed first ovulation in high and average producing dairy cows under heat stress conditions.
Comparative Clinical Pathology – Springer Journals
Published: Mar 6, 2007
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