Results 71 to 80 of about 70,632 (246)

Gonadotropin-releasing hormone increased pregnancy risk in suckled beef cows not detected in estrus and subjected to a split-time artificial insemination program [PDF]

, 2016
Citation: Hill, S. L., Grieger, D. M., Olson, K. C., Jaeger, J. R., Dahlen, C. R., Crosswhite, M. R., . . . Stevenson, J. S. (2016). Gonadotropin-releasing hormone increased pregnancy risk in suckled beef cows not detected in estrus and subjected to a ...
Ahola, J., Crosswhite, M. R., Dahlen, C. R., Fischer, M. C., Grieger, David M., Hill, Scott L., Jaeger, John R., Neville, B. W., Olson, K. C., Pereira, N. N., Seidel, G. E., Stevenson, Jeffrey S., Underdahl, S. R.   +12 more
core   +1 more source

Timing of Insemination for Dairy Cows Identified in Estrus by a Radiotelemetric Estrus Detection System

Journal of Dairy Science, 1998
The optimal time of artificial insemination (AI) was determined from data for 2661 AI in 17 herds utilizing a radiotelemetric system for estrus detection that has the potential for continuous 24-h surveillance to monitor behavioral events associated with estrus.
R.E. Pearson, R.L. Nebel, Lorin D. Warnick, M.B.G. Dransfield   +3 more
openaire   +2 more sources

Estrógeno exógeno no início do ciclo estral de vacas leiteiras na indução do estro e na dinâmica ovariana

Revista Interdisciplinar de Direito, 2011
The objective of this work was to check the exogenous estrogen, in early phase of estrous cycle, on the range of estrus reduction and ovarian dynamics. Animals cycling regularly were selected, without any clinical or reproductive alterations were used in
José Rogério Moura Almeida Neto, Eduardo Paulino da Costa, Ademir de Moraes Ferreira, Wanderlei Ferreira de Sá, Giancarlo Magalhães Santos, Rafael José Otero Arroyo   +5 more
doaj  

Fatores ambientais e estimativa de herdabilidade para o intervalo desmame-cio de fêmeas suínas Environmental factors and heritability estimate for the weaning-estrus interval in sows

Revista Brasileira de Zootecnia, 2008
Este trabalho foi realizado com os objetivos de avaliar a influência de fatores ambientais e estimar a herdabilidade para a característica intervalo desmame-cio (IDC) de fêmeas suínas.
Aderbal Cavalcante Neto, Jeffrey Frederico Lui, José Lindenberg Rocha Sarmento, Norma Ribeiro, José Mauro Costa Monteiro, Humberto Tonhati   +5 more
doaj   +1 more source

Interactions between BNST PACAP stress system and Estrous Cycling in Non-overiectomized Female Rats [PDF]

, 2017
The objective of this investigation is to examine possible interactions between the BNST PACAP stress system and hormone levels during the estrous cycle of naturally cycling female rats.
Brumbaugh, Beniah
core   +1 more source

Estrus Detection in Cattle

Proper detection of estrus is critical in dairy husbandry. Loss of profit due to extended calving intervals, milk loss, and veterinary costs are related to incorrect detection of estrus. Despite enormous progress in the knowledge of reproductive physiology and the development of estrous detection aids, detection of estrus remains a major problem.
van Eerdenburg, Frank J.C.M., van Erp - van der Kooij, Lenny, Roelofs, Judith B.   +2 more
openaire   +1 more source

Comparison of PUFA profiles in the blood and in follicular fluid and its association with follicular dynamics after PGF2α induced luteolysis in dairy cows [PDF]

, 2016
The objectives of the present study were to examine the fatty acid (FA) profiles in serum and in the follicular fluid (FF) and the association between polyunsaturated fatty acid level (PUFA) and follicular growth dynamics following induced luteolysis in ...
Adamov, Nikola, Atanasov, Branko, Davkov, Filip, Dovenski, Toni, Hajrulai-Musliu, Zehra, Hostens, Miel, Opsomer, Geert, Uzunov, Risto, Velev, Romel   +8 more
core   +3 more sources

The Effect Parsley (Petroselinum crispum) Diet on Receptivity of Does

Scientific Papers Animal Science and Biotechnologies, 2023
The aim of the work is focused on parsley (Petroselinum crispum) and the effect on the receptivity in young female broiler rabbits. Nulliparous females of broiler hybrid HYCOLE (age 4-5 months, weight 3.5-3.8 kg) were used for this experiment. Experiment
Martin Fik
doaj  

Influence of estrus on dry matter intake, water intake and BW of dairy cows

Animal, 2014
The objectives of this study were to analyze whether dry matter intake (DMI), water intake (WI) and BW were influenced by estrus. A second objective was to determine whether correlations exist among these traits in non-estrous days.
S. Reith, M. Pries, C. Verhülsdonk, H. Brandt, S. Hoy   +4 more
doaj   +1 more source

Prolactin Inhibition Promotes Follicle Recruitment by Increasing PIKfyve Expression in Ewes During the Estrus Stage

Animals
Prolactin (PRL) plays a key role in the growth and ovulation of animal follicles, but its impact on follicular recruitment in ewes remains uncertain. In this study, a total of sixteen healthy ewes (Hu sheep, aged 2–3 years, with continuous reproduction ...
Sicong Yue, Chunhui Duan, Yong Wang, Xiangyun Li, Ruochen Yang, Yu Li, Xiangyu Chen, Yueqin Liu, Yingjie Zhang   +8 more
doaj   +1 more source