Results 11 to 20 of about 22,219,032 (293)

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   +2 more sources

Estrous detection and timed AI protocols

American Association of Bovine Practitioners Conference Proceedings, 2012
The goal of this brief review is to evaluate whether reproductive programs for lactating dairy cows may be solely dependent on timed AI protocols or AI on detected estrus.
R. Chebel
semanticscholar   +2 more sources

Robust Weighted Timed Automata and Games [PDF]

, 2013
Weighted timed automata extend timed automata with cost variables that can be used to model the evolution of various quantities. Although cost-optimal reachability is decidable (in polynomial space) on this model, it becomes undecidable on weighted ...
Markey, Nicolas, Patricia Bouyer, Ocan Sankur, Bouyer, Patricia, Sankur, Ocan, Nicolas Markey   +5 more
core   +1 more source

Progesterone-based timed AI protocols for Bos indicus cattle III: Comparison of protocol lengths.

Theriogenology, 2020
This study aimed to validate a 7 d progesterone (P4)-based fixed-time AI (FTAI) protocol for Bos indicus cattle by comparing to 8 and 9 d-type protocols. The first study compared 7 vs. 8 d protocols in Nelore heifers (Exp. 1.1; n = 742) and cows (Exp.
A. Prata, G. Madureira, A. Robl, H. Ribeiro, Milton Sagae, M. C. V. Elias, C. Pimenta, Jhonny Barrios, D. Hartmman, A. A. Schneider, Gabriel A F Sandoval, M. Wiltbank, R. Sartori   +12 more
semanticscholar   +1 more source

Effect of GnRH 7 Days Before Presynchronization With Simultaneous PGF2α and GnRH on Reproductive Outcomes in Holstein Dairy Cows

Frontiers in Veterinary Science, 2020
We evaluated if an additional GnRH injection 7 days before pre-synchronization with simultaneous PGF2α and GnRH (PG+G) would improve responses to presynchronization, synchronization, and pregnancy per AI (P/AI).
Andrew M. Hubner, Andrew M. Hubner, Phillip M. G. Peixoto, Joshua Hillesheim, Igor F. Canisso, Igor F. Canisso, Fabio S. Lima, Fabio S. Lima   +7 more
doaj   +1 more source

Robust Controller Synthesis in Timed Automata [PDF]

, 2013
We consider the fundamental problem of Büchi acceptance in timed automata in a robust setting. The problem is formalised in terms of controller synthesis: timed automata are equipped with a parametrised game-based semantics that models the possible ...
Reynier, Pierre-Alain, Markey, Nicolas, Ocan Sankur, Patricia Bouyer, Sankur, Ocan, Bouyer, Patricia, Nicolas Markey, Pierre-Alain Reynier   +7 more
core   +1 more source

What Is the Most Cost-Effective Breeding Program for Dairy Heifers—Timed AI, Estrous Detection, or a Combination of Both?

EDIS, 2014
As any other business enterprise, the sustainability of a dairy farm is highly dependent on economics. In order to obtain a profitable return on assets, there is a constant need to maximize outputs and, oftentimes, to minimize inputs.
Klibs N. Galvão, Eduardo S. Ribeiro, Jose Eduardo P. Santos   +2 more
doaj   +5 more sources

Timed artificial insemination in Serrana nanny-goats: the effects of vaginal specula and artificial insemination technicians

Revista Agrogeoambiental, 2023
The success of artificial insemination (AI) depends on the equipment used, especially regarding the facilitation of artificial insemination technicians’ work and the positioning of insemination guns in the genital tract of animals.
Hélder Miranda Pires Quintas, Daiane Moreira Silva, Paulo Jorge Pereira Afonso, Armindo de Carvalho Neves Álvaro, Óscar João Pinto Mateus, Ramiro Corujeira Valentim   +5 more
doaj   +1 more source

Robustness in Timed Automata [PDF]

, 2013
In this paper we survey several approaches to the robustness of timed automata, that is, the ability of a system to resist to slight perturbations or errors.
Markey, Nicolas, Markey, Nicolas N., Patricia Bouyer, Ocan Sankur, Bouyer, Patricia, Sankur, Ocan, Bouyer, Patricia P., Nicolas Markey   +7 more
core   +1 more source

Physiological and practical effects of progesterone on reproduction in dairy cattle

Animal, 2014
The discovery of progesterone (P4) and elucidation of the mechanisms of P4 action have an important place in the history of endocrinology and reproduction.
M.C. Wiltbank, A.H. Souza, P.D. Carvalho, A.P. Cunha, J.O. Giordano, P.M. Fricke, G.M. Baez, M.G. Diskin   +7 more
doaj   +1 more source