Results 31 to 40 of about 302 (129)
An investigation on the possibility of using eCG for presynchronization prior to ovsynch in dairy cow [PDF]
Iranian Journal of Veterinary Medicine, 2018 Background: Presynchronization could enhance fertility in timed breeding programs. The best presynchronization method has to justify biological requirements and to provide practical and economic advantages.
Amir Niasari-Naslaji +3 more
doaj +1 more source
Beni-Suef University Journal of Basic and Applied Sciences, 2019 Background It is comprehensively recognized that reduced reproductive efficiency represents a great economic loss to dairy producers. Ovarian cysts and anestrus syndromes are considered the greatest significant causes of low reproductive efficiency in ...
Abdeltawab Abdelrazek Yassin Khalil
doaj +1 more source
Expression and detection of estrus in dairy cows: the role of new technologies
Animal, 2014 Despite the widespread adoption of hormonal synchronization protocols that allow for timed artificial insemination (AI), detection of estrus plays an important role in the reproductive management program on most dairies in the United States.
P.M. Fricke +5 more
doaj +1 more source
, 2015 Remarkably, no large scale field study has been conducted to evaluate the reproductive performance of cows synchronized with Presynch-Ovsynch with a 12 versus a 14 d interval from Presynch to the beginning of Ovsynch when cows are inseminated in estrus ...
Wijma, R. +4 more
core +1 more source
ANÁLISIS DE LA EFICIENCIA REPRODUCTIVA DE LOS PROTOCOLOS HORMONALES PRESYNCH Y OVSYNCH EN VACAS HOLSTEIN [PDF]
A eficiência reprodutiva depende da redução do intervalo entre partos através da inseminação artificial ou monta natural levando a uma maior taxa de concepção em um menor tempo. Os protocolos de inseminação Presynch e Ovsynch são os mais utilizados.
Vieira, Paulo Rufino Paulino +2 more
core +1 more source
Institution of Presynch Protocol [PDF]
, 2010 The objective of this study was to compare factors of reproductive efficiency between two separate ovulation synchronization programs, with one that includes presynchronization of all fresh cows and one that does not ovsynch cows until they have been ...
Breedyk, Justin
core
Eficiencia del uso de ovsynch y presynch sobre la fertilidad en vacas lecheras postparto [PDF]
, 2019 El presente proyecto tiene como objetivo evaluar la eficiencia de los protocolos de sincronización reproductiva Presynch y Ovsynch en vacas lecheras en periodo postparto, con el fin de determinar cuál de ellos presenta mejores resultados en la tasa de ...
Anaya Tapia, Violeta Monserrat
core +1 more source
Efectividad de la sincronización de celo utilizando los protocolos Presynch-Ovsynch y doble Ovsynch en vacas Brown Swiss del C.E. Chuquibambilla [PDF]
, 2022 El trabajo de investigación se realizó en el Centro Experimental Chuquibambilla de la Universidad Nacional del Altiplano; durante los meses de Septiembre – diciembre 2019, con el objetivo de determinar la efectividad de la sincronización de celo ...
Sanchez Quispe, Anthony Rusber
core
, 2022 The reactive oxygen species level and antioxidants have determinative roles in gamete development, steroid synthesis and fer-tilization. The objective of the current study was to compare some metabolic and antioxidant parameters in primiparous cows with ...
OLĞAÇ, KEMAL TUNA +4 more
core
Terminorientierte Besamung nach Presynch- oder Ovsynch-Behandlung sowie ein Vergleich verschiedener Methoden der Trächtigkeitsfeststellung bei Milchkühen [PDF]
, 2012 In dairy farming reproductive performance and milk yield of cows have a major impact on the operation’s economic success. As the negative correlation between milk yield and reproductive performance is widely known, the dairy industry has a strong ...
Marthold, Daniela
core +1 more source