Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Marcos G, Colazo"'
Publikováno v:
Journal of Applied Animal Research, Vol 50, Iss 1, Pp 504-510 (2022)
This study compared the effects of CIDR type and eCG treatment on ovarian follicular dynamics, estrus response and pregnancy per AI (P/AI) in Holstein heifers subjected to a 5-d estrus synchronization protocol. On Day 0, heifers (n = 133) received ei
Externí odkaz:
https://doaj.org/article/fe722c3ee86d4fb883f2db15300c60d6
Autor:
Luis B. Ferré, Julian Jaeschke, Juliana Gatti, Gerardo Baladón, Ezequiel Bellocq, Gustavo Fernández, Ramiro Rearte, Michael E. Kjelland, Marcos G. Colazo, Jordan M. Thomas
Publikováno v:
Animals, Vol 13, Iss 17, p 2803 (2023)
Fixed-timed artificial insemination (FTAI) protocols for beef cattle in South America are primarily based on estradiol esters and intravaginal progesterone-releasing devices (IVPD). The objective of this study was to determine the optimal gonadotropi
Externí odkaz:
https://doaj.org/article/ec8e85f9b51f4877b5e74f65bc76bc62
Autor:
Patricio Ponce-Barajas, Marcos G. Colazo, Amir Behrouzi, Todd O. Ree, John P. Kastelic, Divakar J. Ambrose
Publikováno v:
Animals, Vol 13, Iss 14, p 2283 (2023)
There is evidence that replacing the gonadotropin-releasing hormone (GnRH) with porcine luteinizing hormone (pLH) to synchronize ovulation prior to artificial insemination (AI) increased pregnancy per AI in dairy cows without affecting blood progeste
Externí odkaz:
https://doaj.org/article/5e0e951f95884da69b575f642309ef43
Publikováno v:
Research in Veterinary Science. 147:60-67
Hypocalcemia, defined as total blood calcium concentrations below 2.1 mM, has detrimental impacts on welfare, production and reproduction in dairy cattle. Yet, no cow-side test exists for testing total bovine blood calcium. Here, we modified the spli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f356dee6ce8eb98f5c5d956c2b89c52a
https://doi.org/10.1016/j.rvsc.2022.04.003
https://doi.org/10.1016/j.rvsc.2022.04.003
Publikováno v:
Animals, Vol 8, Iss 5, p 62 (2018)
This review updates the causal mechanisms and risk factors for multiple ovulations (MOV) in cattle. Clearly, MOV can lead to twin pregnancies, which negatively affects the health, production, and reproduction of cows. Therefore, a better understandin
Externí odkaz:
https://doaj.org/article/ceec7be085f947adb8d434c6152f948c
Autor:
Timothy R Caldwell, T.C. Bruinjé, Marcos G. Colazo, Stephen P. Miller, Divakar J. Ambrose, Zhiquan Wang, Antoine Dourey, Patricio Ponce-Barajas
Publikováno v:
Canadian Journal of Animal Science. 99:456-464
The objectives of this study were to compare morphology, plasma and acrosome membrane integrities, and mitochondrial function in sperm of bulls selected for low- vs. high-residual feed intake (RFI)...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::776d15d9a47d867d39a23e24f574f507
https://doi.org/10.1139/cjas-2018-0103
https://doi.org/10.1139/cjas-2018-0103
Autor:
Divakar J. Ambrose, A. Behrouzi, Marcos G. Colazo, Stephen Tsoi, Michael K. Dyck, Reza Salehi, Masahito Oba, Benjamin K. Tsang
Publikováno v:
Reproduction. 152:715-726
The main objectives of this study were to determine the influence of diets enriched in α-linolenic, linoleic or oleic acid on the development and transcriptomic profile of embryos collected from dairy cattle. Non-lactating Holstein cows received one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2705fde1b4fc6a507cb031bc10bd4a39
https://doi.org/10.1530/rep-16-0093
https://doi.org/10.1530/rep-16-0093
Publikováno v:
Colloid and Polymer Science. 294:1733-1741
Progesterone (P4) is a vital steroid hormone involved in the reproduction cycle and necessary for maintenance of pregnancy in humans and animals. Monitoring P4 concentrations is required in various fields, such as dairy industry, environmental protec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d33ca65f41e2b0df182bc73c3bcb661
https://doi.org/10.1007/s00396-016-3926-3
https://doi.org/10.1007/s00396-016-3926-3
Publikováno v:
Theriogenology. 85:1249-1257
In a previous work, using porcine LH (pLH) in lieu of GnRH for synchronizing ovulation in dairy cows improved pregnancy rates without increasing plasma progesterone concentrations after ovulation. The LH profile is known to remain elevated above basa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59b7cf77914bc574f9b0393811ac7730
https://doi.org/10.1016/j.theriogenology.2015.12.007
https://doi.org/10.1016/j.theriogenology.2015.12.007
Publikováno v:
Animals : an Open Access Journal from MDPI
Animals, Vol 8, Iss 5, p 62 (2018)
Animals, Vol 8, Iss 5, p 62 (2018)
Simple Summary Multiple ovulations (MOV) in cattle can lead to twin pregnancies, which negatively affects the health, production, and reproduction of cows. Despite many studies, the causal mechanisms behind MOV are still not well understood. There is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cd58b129f30b2bc55ee73747b5efb33
https://pubmed.ncbi.nlm.nih.gov/29695075
https://pubmed.ncbi.nlm.nih.gov/29695075