Two experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH...
Author(s)
Barbosa, I. P.; Cestaro, J. P.; Silva, S. A.; Noleto, G. S.; Gonçalves, R. L.; Silva, G. M.; Paes, F. H.; Gasperin, B. G.; Rovani, M. T.; Pfeifer, L. F. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2022, 179, pp 1-6
Autonomic nervous function evaluated by heart rate variability (HRV) and blood characteristics were compared between Holstein Friesian cows that developed postpartum fever (PF; n = 5) and clinically healthy (CH; n = 6) puerperal cows in this case-control study. A cow was defined as having PF when...
Author(s)
Aoki, T.; Itoh, M.; Chiba, A.; Kuwahara, M.; Nogami, H.; Ishizaki, H.; Yayou, K. I.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2020, 15, 11,
This study aimed to elevate of fertility rate eCG and bovine polyclonal anti eCG toward the rate of pregnancy in Madura cows at Bangkalan, Madura. The experimental animal used in this study comprised of 30 cows, with normal estrus cycle and 3 years old of age. The Madura cows are all healthy with a ...
Author(s)
Hermadi, H. A.; Warsito SunaryoHadi
Publisher
Connect Journals, Ghaziabad, India
Citation
Biochemical and Cellular Archives, 2020, 20, 2, pp 4447-4450
The aim was to study reproductive outcomes of Nelore (Bos indicus) cows submitted to a 7-d estradiol (E2)/progesterone (P4)-based timed artificial insemination (TAI) protocol, receiving various combinations of doses and hormones. Primiparous (n = 962) and multiparous (n = 1935) cows were submitted...
Author(s)
Alves, R. L. O. R.; Silva, M. A.; Consentini, C. E. C.; O. e Silva, L.; Folchini, N. P.; Oliva, A. L.; Prata, A. B.; Gonçalves, J. R. S.; Wiltbank, M. C.; Sartori, R.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2021, 169, pp 89-99
Effects were evaluated in Bos indicus cows of eCG and FSH on follicular growth, estrous expression, and pregnancy per artificial insemination (P/AI) as a result of fixed-time artificial insemination (TAI). In Experiment 1, extent of timing-of-ovulation synchronization among cows was evaluated after ...
Author(s)
Bottino, M. P.; Simões, L. M. S.; Silva, L. A. C. L.; Girotto, R. W.; Scandiuzzi, L. A.; Massoneto, J. P. M.; Baruselli, P. S.; Souza, J. C.; Sales, J. N. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2021, 228,
We previously reported the possibility of using the electrocardiogram variable to estimate blood calcium (Ca) concentration in dairy cows based on the strong positive correlation between the blood Ca concentration and the inverse of the corrected ST peak interval (STc-1). To improve the accuracy of ...
Author(s)
Itoh, M.; Nakajima, Y.; Kuwano, K.; Maeda, D.; Sakurai, Y.; Matsui, Y.; Kawamoto, S.
Publisher
Japanese Society of Veterinary Science, Tokyo, Japan
Citation
Journal of Veterinary Medical Science, 2022, 84, 2, pp 193-198
This study was conducted to compare efficacy of treatments with EB or GnRH and different quantities of exogenous progesterone (P4) for synchronization of time of ovulation on follicular growth and pregnancy in lactating dairy cows. In Experiment 1, 40 cows were treated with EB or GnRH and 1.9 or...
Author(s)
Scandolo, D. G.; Dominguez, G.; Bilbao, M. G.; Perez, W. S.; Zapata, L. O.; Ravera, E.; Melendez, P. G.; Archbald, L. F.; Sota, R. L. de la; Bartolome, J. A.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2020, 223,
Respiratory sinus arrhythmia (RSA) provides a quantitative evaluation of 'vagal tone' and may be used for pain and stress assessment in livestock. The aim was to quantify the magnitude of RSA in cows and sheep. In 7 cows and 4 sheep standing at rest we measured the 3-lead electrocardiogram (ECG)...
Author(s)
Orsetti, C.; Vitale, V.; Mortola, J.; Sgorbini, M.; Bonelli, F.
Publisher
Springer, Dordrecht, Netherlands
Citation
Veterinary Research Communications, 2022, 47, 1, pp 279-284
Timed AI has become a potential tool to bypass postpartum acyclicity, yet only a small percentage of the world bovine herd is inseminated. Most females are still subjected to bull mating; therefore, the frequent occurrence of postpartum anestrus may compromise their reproductive efficiency. Thus,...
Author(s)
Ferreira, R. M.; Conti, T. L.; Gonçalves, R. L.; Souto, L. A.; Sales, J. N. S.; SáFilho, M. F.; Elliff, F. M.; Baruselli, P. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 114, pp 206-211
The aim of this study was to determine the general factors that influence multiple ovulation (MO) in the donor cows from the breed Latvian Brown (LB), Latvian Blue (LBl), and Danish Red (DR) using a follicle-stimulating hormone (FSH) or equine chorion gonadotropin (eCG). The 30 cows aged 2 to 15...
Author(s)
Antane, V.; Lusis, I.; Sematovica, I.; Waldmann, A.; Kanska, I.; Mangale, M.; Ringa-Osleja, G.; Lidaks, M.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2021, 243,