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The applications of timed artificial insemination and timed embryo transfer in reproductive management of dairy cattle Aplicação da inseminação artificial e transferência de embrião em tempo fixo no manejo reprodutivo de vacas leiteiras

Revista Brasileira de Zootecnia, 2010
Fertility of dairy cattle is generally decreasing. Overall estrus detection efficiency in lactating dairy cattle is low, as expression of estrus is often compromised.
Divakar Justus Ambrose, Marcos Germán Colazo, John Patrick Kastelic   +2 more
doaj   +1 more source

Estrus Synchronization and Pregnancy Rate Using Ovsynch Method in Uganda Dairy Farms

Journal of Animal Reproduction and Biotechnology, 2017
The artificial insemination (AI) is one of the best assisted reproductive technologies for increasing reproductive capacity and facilitating the genetic improvement in farm animals.
Dae-Jin Kwon, Seok Ki Im, Hyun Kim, Hak-Kyo Lee, Ki-Duk Song   +4 more
doaj   +1 more source

Evaluation of a modified GnRH-based timed-AI protocol associated with estrus detection in beef heifers inseminated with sex-selected or conventional semen.

Theriogenology, 2018
The main objective was to compare pregnancy per AI (P/AI) between sex-selected and conventional semen in cyclic beef heifers subjected to a 5-day Co-synch plus CIDR protocol and evaluated the usefulness of an estrus detection (ED) aid to identify heifers
M. Colazo, P. Whittaker, K. Macmillan, D. Bignell, G. Boender, R. de Carvalho Guimaraes, R. Mapletoft   +6 more
semanticscholar   +1 more source

Reproductive performance of early- and late-calving dairy cows artificially inseminated after ovulation synchronization and estrous resynchronization or artificially inseminated after observed estrus

JDS Communications, 2021
Within seasonal dairy systems, cows that calve late in the calving season are less likely to become pregnant and maintain a yearly calving interval. Very few studies have examined effective strategies for reproductive management of these late-calving ...
S.G. Moore, S.A. Hamilton, R. Molina-Coto, L.M. Mayo, R.O. Rodrigues, T. Leiva, S.E. Poock, M.C. Lucy   +7 more
doaj   +1 more source

Improved fertility in suckled beef cows ovulating large follicles or supplemented with long-acting progesterone after timed-AI.

Theriogenology, 2016
We aimed to evaluate the effects and the interaction of size of the preovulatory follicle (POF) and long-acting progesterone (P4) supplementation after timed-AI on CL function and pregnancy success in beef cows.
G. Pugliesi, F. B. Santos, É. Lopes, É. Nogueira, J. Maio, M. Binelli   +5 more
semanticscholar   +1 more source

Field comparison of GnRH and PGF2α treatments in cows not expressing estrus at timed-AI [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia
RESUMO Objetivou-se comparar as taxas de prenhez (TP) e a perda gestacional (PG) de vacas sem expressão de estro (NEE), as quais receberam PGF2α ou GnRH no momento da IATF.
J.H.W. Diniz, A.C.B. Teixeira, R.F.G. Peres, R.B. Gois, E.C.R. Cunha, O.J. Escobar Jr, R.S. Carvalho, L.Z. Oliveira   +7 more
doaj   +1 more source

Type of CIDR but not eCG administration affected pregnancy per AI in Holstein heifers subjected to a 5-day estrus synchronization protocol

Journal of Applied Animal Research, 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 either
Albina Sanz, Mohanathas Gobikrushanth, Marcos G. Colazo   +2 more
doaj   +1 more source

Hormonal treatment and estrus synchronization in cows: A mini-review

Journal of Advanced Veterinary and Animal Research, 2015
Perfect detection of estrus is crucial for good husbandry practice of cow. Estrus synchronization is the alternative strategy to bypass the critical problem of estrus detection.
Ashit Kumar Paul, Ton Yoisungnern, Napolean Bunaparte   +2 more
doaj   +1 more source

Effect of dose and frequency of prostaglandin F2α treatments during a 7-day Ovsynch protocol with an intravaginal progesterone releasing device on luteal regression and pregnancy outcomes in lactating Holstein cows

Journal of Dairy Science, 2023
: Our objective was to evaluate the effect of 3 different Ovsynch protocols on progesterone (P4) and pregnancies per artificial insemination (P/AI), where all cows received a P4 releasing intravaginal device (PRID) from d 0 until d 8.
M. Hölper, L. Bretzinger, F. Randi, W. Heuwieser, S. Borchardt   +4 more
doaj   +1 more source

On Applying Imprecise Computation to Real-Time AI Systems [PDF]

The Computer Journal, 1995
Imprecise computation is known as a technique for real-time systems where precise outputs are traded off for timely responses to system events. This paper discusses how the technique can be applied to a class of real-time Al systems designed for solving combinatorial problems and proposes an evaluation method for assessing if imprecise computation can ...
openaire   +1 more source