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AbstractFull Text

Aim: This study aimed at determining the profiles of progesterone and bovine interferon-τ (bIFN-τ) and the correlation between the two in repeat breeding (RB) Aceh cattle and non-RB Aceh cattle. Materials and Methods: The study was performed on five RB and five non-RB Aceh cows. These cows were...

Author(s)
Husnurrizal, H.; Siregar, T. N.; Gholib, G.; Panjaitan, B.; Armansyah, T.; Wahyuni, S.
Publisher
Veterinary World, Wankaner, India
Citation
Veterinary World, 2021, 14, 1, pp 230-236
Abstract

The objectives of this study were to investigate the effect of Day 7 embryo quality and subclinical endometritis (SCE) in repeat breeder recipient cows on morphometry of Day 16 embryo and to determine the association of %PMN, serum progesterone and Day 16 conceptus length. Holstein dairy cows that...

Author(s)
Kasimanickam, R. K.; Kasimanickam, V. R.; Nishant Kumar; Reisenauer, C.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2021, 163, pp 10-17
Abstract

The role of progesterone in maintaining pregnancy is well known in the bovine. Subtle differences exist between dairy and beef cows because of differing concentrations of progesterone during recrudescence of postpartum estrous cycles, rate of follicular growth and maturation, proportions of 2- and...

Author(s)
Stevenson, J. S.; Lamb, G. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 7, pp 5951-5964
Abstract

The objective of this study was to evaluate the association between progesterone concentration on Days 4 and 9 of the estrus cycle and endometrial transcriptome at Day 9 in lactating grazing dairy cows. Blood samples were obtained on Days 0, 4, and 9 for progesterone measurement by...

Author(s)
Madoz, L. V.; Rabaglino, M. B.; Migliorisi, A. L.; Jaureguiberry, M.; Perez Wallace, S.; Lorenti, N.; Domínguez, G.; Giuliodori, M. J.; Sota, R. L. de la
Publisher
Elsevier Inc, New York, USA
Citation
Domestic Animal Endocrinology, 2021, 74,
Abstract

The aim of this study was to investigate the effects of hormonal support on the pregnancy rate in repeat breeder cows. Prostaglandin F + Ovsynch oestrus synchronization protocol was applied to the cows. Following the fixed time insemination (day 0), the cows were divided into 4 groups. In Group 1 ...

Author(s)
Alkan, H.; Erdem, H.
Publisher
University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
Citation
Acta Veterinaria Brno, 2020, 89, 4, pp 307-315
Abstract

The objective of this study was to compare the effects of different lengths of ovulation synchronization protocols using 2 controlled internal drug release (CIDR) devices on ovarian dynamics and pregnancy outcomes in lactating dairy cows. Lactating Holstein cows (n=1,979) were randomly assigned to...

Author(s)
Pereira, M. H. C.; Lopes, F. R., Jr.; Munhoz, A. K.; Pohler, K. G.; Filho, R. V. O.; Cappellozza, B. I.; Vasconcelos, J. L. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2021, 104, 1, pp 1073-1086
Abstract

Decreased fertility associated with maternal ageing is a well-known critical problem, and progesterone (P4) concentration decreases during the menopause transition in women. The corpus luteum (CL) secretes P4, thereby supporting the implantation and maintenance of pregnancy. It is proposed that a ...

Author(s)
Hori, K.; Matsuyama, S.; Nakamura, S.; Iwata, H.; Kuwayama, T.; Miyamoto, A.; Shirasuna, K.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2019, 54, 1, pp 23-30
Abstract

Two experiments were conducted with Holstein-Friesian cows in the Republic of North Macedonia and with Holstein cows in Kansas. We hypothesized that 1 dose of PGF administered on d 8 (Ov-8×1) instead of d 7 (Ov-7×1) in an Ovsynch program [GnRH-1 (d 0)-7 d-PGF-56 h-GnRH-2-16 h-timed artificial...

Author(s)
Atanasov, B.; Dovenski, T.; Celeska, I.; Stevenson, J. S.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2021, 104, 6, pp 7272-7282
Abstract

Aim: To determine the effect of a progesterone-based synchrony programme on the daily hazard of conception and the probability of being pregnant at the end of the seasonal mating period in cows not observed in oestrus within 35-49 days of insemination and that were diagnosed non-pregnant (phantom ...

Author(s)
Chambers, G. P.; O'Sullivan, M. L.; Compton, C. W. R.
Publisher
Taylor & Francis, Melbourne, Australia
Citation
New Zealand Veterinary Journal, 2020, 68, 6, pp 313-323
Abstract

This study aimed to investigate the effect of hyperketonemia on estrogen, progesterone and ovarian follicle size during postpartum as well as on pregnancy rate at first insemination. Regarding this, 90 Holstein cows were selected from one of the industrial dairy farms in Isfahan province, Iran....

Author(s)
Pishvaei, F.; Dehkordi, M. K.; Nazem, M. R.
Publisher
TÜBITAK, Ankara, Turkey
Citation
Turkish Journal of Veterinary & Animal Sciences, 2021, 45, 4, pp 642-648

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