Results 31 to 40 of about 59,533 (287)

An update on repeat breeding cows [PDF]

open access: yes, 2021
Las vacas repetidoras son un problema frecuente en nuestros rodeos lecheros que genera pérdidas económicas importantes. Estas vacas se caracterizan por ser normales al examen clínico pero presentan dificultad en quedar preñadas ya que continúan vacías ...
Jaureguiberry, María   +2 more
core  

Plasma progesterone profile and conception rate following exogenous supplementation of gonadotropin-releasing hormone, human chorionic gonadotropin, and progesterone releasing intra-vaginal device in repeat-breeder crossbred cows [PDF]

open access: yesVeterinary World, 2016
Aim: This study was designed to evaluate the effect of gonadotropin-releasing hormone (GnRH), human chorionic gonadotropin (hCG), and progesterone impregnated intra-vaginal device on progesterone profile and conception rate in repeat-breeding crossbred ...
N. K. J. Pandey   +3 more
doaj   +1 more source

Current Insights in the Repeat Breeder Cow Syndrome

open access: yesAnimals, 2023
Cows can have difficulties becoming pregnant, and in certain cases, these reproductive failures do not have an evident cause. Furthermore, when these failures are repeated three or more times with estrous cycles of normal duration and in the absence of ...
Carlos Carmelo Pérez-Marín   +1 more
doaj   +1 more source

Cisgenesis: an important sub-invention for traditional plant breeding companies

open access: yes, 2009
Modern plant breeding is highly dependent on new technologies to master future problems. More traits have to be combined, frequently originating from wild species. Traditional breeding is connected with linkage drag problems.
H. J. Schouten   +3 more
core   +1 more source

Pengaruh Pemberian GnRH pada Sapi Potong yang Mengalami Kawin Berulang (Repeat Breeding)

open access: yes, 2021
Repeat breeding is a condition in which cows have normal estrous cycles and have been mated 3 times or more but are not pregnant. The incidence of repeat breeding in beef cattle can be detrimental to breeders in terms of time, that the calving period ...
Adi, Yosua Kristian   +5 more
core   +1 more source

Pattern of induced estrus and conception rate following Ovsynch and Ovsynch based gonadotropin-releasing hormone treatments initiated on day 6 of estrous cycle in repeat breeding crossbred cows [PDF]

open access: yesVeterinary World, 2016
Aim: The aim was to evaluate the estrus response, incidence of accessory corpus luteum formation and fertility following different hormonal protocols in repeat breeding crossbred cows.
N. Ahmed   +5 more
doaj   +1 more source

Repeat Breeding in Cattle and Buffalo

open access: yes, 2022
The presence of a sizable number of repeat breeder cows is one of the most significant loss-causing reproductive issues in dairy cattle that are now prominent at the field level. Repeat breeders have a significant negative impact on both productivity and the economy.
openaire   +2 more sources

Incidence and etiologies of Repeat breeding in buffaloes

open access: yes, 2023
Repeat breeding is one of the important infertility problems that occur in buffaloes. Repeat breeding increases service period and inter-calving interval thereby causing low milk and calf production resulting in greater economic losses to the dairy industry.
openaire   +2 more sources

Repeatability of Breeding Parameters in Arctic Skuas

open access: yesJournal of Avian Biology, 1998
Established pairs of Arctic Skuas Stercorarius parasiticus showed high repeatability in clutch volume (both within and between years), moderate repeatability in laying dates, but low repeatability in chick growth. Males that changed partner showed no repeatability in clutch volume or chick growth but did show repeatability in laying date, whereas ...
R. A. Phillips, R. W. Furness
openaire   +1 more source

Use of Cystorelin® and artificial insemination in repeat-breeding beef heifers after estrous synchronization [PDF]

open access: yes, 1993
Gonadotropin-releasing hormone (GnRH) was administered to a group of 13- to 14- month-old Angus and Angus crossbred repeat-breeding heifers at the time of the second or third artificial insemination to determine its effect on conception rates ...
Houghton, P.L.   +5 more
core   +1 more source

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