Results 41 to 50 of about 11,364 (306)

Effect of gonadorelin dose and an additional gonadorelin treatment 2 days after the initiation of Resynch-25 on ovarian dynamics and fertility of lactating Holstein cows

Journal of Dairy Science
: Our objective was to improve ovulatory response at the initiation of the Resynch-25 protocol by (1) increasing the dose of GnRH from 100 µg to 200 µg; and (2) giving a second GnRH treatment 56 h after the initiation of the protocol.
Iago M.R. Leão, Carlos E.C. Consentini, Marcelo S. El Azzi, Everaldo Anta-Galván, Teresita Valdés-Arciniega, Lucas Oliveira e Silva, Roberto Sartori, João Paulo N. Martins   +7 more
doaj   +1 more source

Effect of nerve growth factor-β administered at insemination for lactating Holstein dairy cows bred after timed-artificial insemination protocol

Journal of Dairy Science, 2022
: The objectives of this study were to determine the effects of nerve growth factor-β (NGF), purified from bulls' seminal plasma and administered at the time of artificial insemination (AI), on progesterone post-AI, interferon-stimulated genes (ISG), and
A.M. Hubner, I.F. Canisso, P.M. Peixoto, W.M. Coelho, Jr., L.L. Cunha, L. Ribeiro, S. Crump, F.S. Lima   +7 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Influence of difficulty of insemination, temperament and plasma cortisol on conception rate of Nelore cows and heifers in timed AI

, 2019
The objective was to evaluate the influence of stress and difficulty of insemination (DifIA) on conception rate (CR) of Nellore cows (n= 93) and heifers (n= 72) in Timed-AI.
F.Z. Brandão (5551550), L.Z. Oliveira (6826463), C.S. Oliveira (7577054), H.B. Graff (7577063), I.M. Noronha (7577051), A.L.R. Rodrigues (7577066), A.G. Silva (6510185), F.M. Monteiro (7577057), R.F.G. Peres (7577060)   +8 more
core   +1 more source

Timed insemination of suckled beef cows after ovulation synchronizationwith Cosynch + CIDR [PDF]

, 2002
Lactating beef cows (n=360) were synchronized using the Cosynch procedure; 100 μg of GnRH (day −7) followed in 7 days by 25 mg of PGF2α (day 0). A used intravaginal progesterone insert (CIDR-B) was inserted on day −7 and removed at the time of PGF2α ...
Harmoney, Keith R., Stevenson, Jeffrey S., Keith R. Harmoney, Jeffrey S. Stevenson, Johnson, Sandra K., Sandra K. Johnson   +5 more
core   +1 more source

Effect of 200 µg of gonadorelin at the first gonadotropin-releasing hormone of the Resynch-25 on ovarian dynamics and fertility in lactating Holstein cows

Journal of Dairy Science
: Our objective was to determine the effect of a 200-µg dose of GnRH 25 d after previous artificial insemination (AI) in a Resynch-25 resynchronization program on ovulatory response, circulating progesterone (P4) concentrations before and after treatment,
Iago M.R. Leão, Marcelo S. El Azzi, Everaldo Anta-Galván, Teresita Valdés-Arciniega, João Paulo N. Martins   +4 more
doaj   +1 more source

Effect of delayed timing of artificial insemination with sex-sorted semen on pregnancy per artificial insemination in synchronized dairy heifers managed in a seasonal-calving pasture-based system

JDS Communications, 2023
The objective of this study was to evaluate the timing of artificial insemination (AI) with frozen-thawed sex-sorted semen on pregnancy per AI (P/AI) in dairy heifers.
S.G. Moore, A.D. Crowe, F. Randi, S.T. Butler   +3 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Learning Symbolic Timed Models from Concrete Timed Data – Data and Replication Package

, 2023
Artifacts for the publication “Learning Symbolic Timed Models from Concrete Timed Data”.
Distributed, Embedded and Intelligent Systems, Aalborg Robotics Challenge, Howar, Falk Maria, Kristjansen, Martin; id_orcid, Lorber, Florian, Department of Computer Science, AI for the People, Larsen, Kim Guldstrand; id_orcid, CISS - Center for Embedded Software Systems, Kauffman, Sean; id_orcid, Dierl, Simon, Artificial Intelligence and Machine Learning, Mauritz, Malte, The Technical Faculty of IT and Design   +13 more
core   +1 more source

When Implementing the Presynch-11/Ovsynch Reproductive Management Program, the Fertility of Lactating Dairy Cows Improved When They Received Timed Artificial Insemination Compared with the Inclusion of Estrus Detection

Animals
Artificial insemination 12 h following observed standing estrus is a standard estimate of the fertility levels of cattle. The main objective of this study was to determine if controlling ovarian development with a fertility program could alter the ...
Jaimie Marie Strickland, João Paulo Nascimento Martins, Lou Neuder, James R. Pursley   +3 more
doaj   +1 more source