Results 141 to 150 of about 1,561,107 (243)

Verification of Timed Automata with Deadlines in Uppaal [PDF]

open access: yes, 2008
Timed Automata with Deadlines (TAD) is a notation to model concurrent real-time systems that has a number of advantages over mainstream Timed Automata (TA). The semantics of deadlines and synchronisation rule out the most common form of timelocks, making
Gomez, Rodolfo
core  

Reproductive Performance Following Timed Artificial Insemination in Silage-fed Beef Cows: the Effects of Synchronization Method and Postpartum Energy Intake

open access: yes, 2003
Many studies have examined methods for estrous synchrony in beef cows, yet very little controlled research has addressed the interaction between postpartum energy intake and synchrony system. The objectives of this study were to compare the effectiveness
Charmley, Ed   +3 more
core   +1 more source

Sperm Recovery and Evaluation in Domestic Species: Challenges and Current Practices

open access: yesReproduction in Domestic Animals, Volume 61, Issue S3, October 2026.
ABSTRACT Semen collection is a key step in the development of assisted reproductive technologies (ARTs) in domestic mammals, as the collection method determines the functionality and fertility of the sperm. The artificial vagina or manual collection yields ejaculates similar to those obtained during natural mating, although they require prior training ...
A. J. Soler   +8 more
wiley   +1 more source

Control of estrus and ovulation: Fertility to timed insemination of gilts and sows

open access: yes, 2016
It is possible to control follicular development in gilts and sows with the use of hormones including the progestogen altrenogest, GnRH, eCG, hCG, and porcine luteinizing hormone (pLH).
Kirkwood, R.   +3 more
core   +1 more source

Functional and Fertility Outcomes of Two Milk‐Based Extenders for Short‐Term Storage of Ram Semen at 15°C

open access: yesReproduction in Domestic Animals, Volume 61, Issue S3, October 2026.
ABSTRACT The efficiency of AI in sheep depends partly on maintaining sperm function during storage. This study compared INRA 96 and a skim milk‐based formulation for storing ram semen at 15°C for 6 h, evaluating sperm quality and IVF and field fertility outcomes. INRA 96 showed higher VCL, ALH, and sperm viability after 6 h of storage.
Marta Neila‐Montero   +10 more
wiley   +1 more source

Positive relationship of rectal temperature at fixed timed artificial insemination on pregnancy outcomes in beef cattle. [PDF]

open access: yesJ Anim Sci, 2022
Liles HL   +9 more
europepmc   +1 more source

Evaluation of the pregnancy rate in multiparous Nellore cows under artificial insemination and fixed-time artificial insemination

open access: yesRevista Brasileira de Medicina Veterinaria, 2012
Entre novembro de 2009 e maio de 2010, foram avaliadas 158 fêmeas da raça nelore, lactantes e multíparas. Os animais foram estratificados inicialmente pela condição corporal (≥ 3,0 em escala de 1 a 5) e divididos aleatoriamente em dois grupos após triagem ginecológica, sendo o grupo I representado por 60 fêmeas inseminadas pelo sistema convencional ...
Ferreira, Marcelle Christine Nascimento   +3 more
openaire   +2 more sources

Pre‐Weaning Administration of a PGF2α Analogue (Cloprostenol) and Its Influence on Early Reproductive Indicators in Sows Under Commercial Farm Conditions

open access: yesReproduction in Domestic Animals, Volume 61, Issue S3, October 2026.
ABSTRACT Efficient reproductive management in commercial swine production requires minimising non‐productive days and ensuring rapid return to oestrus after weaning. The present study evaluated the effect of pre‐weaning administration of cloprostenol, a PGF2α analogue, on early reproductive indicators in sows under commercial farm conditions.
Sara Crespo, Joaquín Gadea
wiley   +1 more source

Association of Estrus Expression Preceding Timed-Artificial Insemination and Fertility in Dairy Cattle

open access: yes
The aim of this study was to evaluate the association between estrus expression and fertility outcomes in nulliparous Holstein heifers and high-producing lactating dairy cows submitted to GnRH-based timed artificial insemination (TAI) protocols ...
Stevenson, J. S.   +2 more
core   +1 more source

Artificial Insemination of Swine [PDF]

open access: yes, 2000
Enhancing physiological processes and reducing production costs associated with mating are key considerations for optimizing swine breeding herd management.
Clapper, Jeff
core  

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