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Добірка наукової літератури з теми "Pregnancy and Estrus"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Pregnancy and Estrus"

1

Syaiful, Ferry, Jaswandi Jaswandi, Mangku Mundana, Yendraliza Yendraliza, and Zaituni Udin. "Estrus response and pregnancy rate of swamp buffalo: The use of multivitamins in different estrus synchronization hormone protocols." Journal of Advanced Veterinary and Animal Research 11, no. 3 (2024): 729. http://dx.doi.org/10.5455/javar.2024.k824.

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Objective: This study aims to determine the effect of using multivitamins in different estrus synchronization hormone protocols on estrus response, estrus onset, estrus duration, estrus intensity, and pregnancy rate in swamp buffalo. Materials and Methods: This study used 30 post-partum adult buffalo, with three estrus synchronization methods treated: 1. Conventional plus Prostaglandin F2 α (PGF2α-PGF2α + multivitamin)-AI; 2. Co-synch plus Gonadotropin-releasing hormone (GnRH-PGF2α + multivitamin)-AI; 3. Combination of hormone plus (Estrogen-Progesterone-PGF2α + multivitamin)-AI. Research vari

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2

Harl, Audra W., Verónica M. Negrón-Pérez, Jacob W. Stewart, George A. Perry, Alan D. Ealy, and Michelle L. Rhoads. "Follicular Fluid from Cows That Express Estrus During a Fixed-Time Artificial Insemination Protocol Promotes Blastocyst Development." Journal of Developmental Biology 13, no. 2 (2025): 14. https://doi.org/10.3390/jdb13020014.

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It is not yet understood why cows that exhibit estrus and ovulate are more likely to become pregnant than those that ovulate but do not exhibit estrus during a fixed-time artificial insemination (FTAI) protocol. The objective of this work was to determine whether the follicular fluid from cows that exhibit estrus contributes to the increased likelihood of pregnancy. Lactating crossbred cows were subjected to an FTAI estrous synchronization protocol. Estrous behavior was observed and recorded prior to transvaginal follicle aspiration from cows that did (estrus, n = 7) or did not exhibit estrus

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3

Thomas, Jordan M., William R. Lamberson, and John B. Hall. "PSXIII-22 Modeling the optimal time point at which to perform timed artificial insemination." Journal of Animal Science 97, Supplement_3 (2019): 371. http://dx.doi.org/10.1093/jas/skz258.739.

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Abstract Timing of artificial insemination (AI) critically impacts likelihood of pregnancy success. In modern timed AI protocols for cattle, AI is performed at a predetermined time point following estrus synchronization. As a result, there may be significant variation among cows or heifers in estrous status and in timing of insemination relative to estrus onset. Recommendations as to when timed AI should be performed are formulated based on research trials evaluating alternative time points. However, available data are limited, as such trials are costly and require large numbers to detect sign

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4

Knickmeyer, Emma R., Jordan M. Thomas, James William C. Locke, et al. "PSXIII-12 Evaluation of split-time artificial insemination following administration of the 7-d CO-Synch + CIDR® estrus synchronization protocol in beef heifers." Journal of Animal Science 97, Supplement_3 (2019): 374. http://dx.doi.org/10.1093/jas/skz258.745.

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Abstract Estrous response and pregnancy rates resulting from fixed-time (FTAI) or split-time (STAI) artificial insemination were compared among heifers following treatment with the 7-d CO-Synch + CIDR® (controlled internal drug release;1.38g progesterone) protocol. Heifers (n = 456) were assigned to balanced treatments based on weight and reproductive tract score (RTS; Scale 1–5). Gonadotropin-releasing hormone (GnRH; 100 µg gonadorelin acetate) was administered coincident with CIDR® insertion. Progesterone inserts were removed after 7 d, and PG (250 mg im cloprostenol sodium) was administered

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5

Solodowa, Elena V., and Anna V. Kalinova. "THE EFFECT OF HORMONAL TREATMENTS ON THE PREGNANCY RATES OF MARES." Siberian Journal of Life Sciences and Agriculture 14, no. 2 (2022): 326–37. http://dx.doi.org/10.12731/2658-6649-2022-14-2-326-337.

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To determine the effect of hormonal drugs on the pregnancy rates of mares, authors analyzed this indicator in natural (n=303) and stimulated cycles (n=170). They used cloprostenol preparations to shorten the diestral period, and human chorionic gonadotropin [hCG] to induce ovulation. Natural cycles are divided into groups, depending on the duration – normal and short (19–24 and 12–18 days, respectively). Stimulated cycles for the following groups: (1) short (8–18 days); (2) normal (19–24 days) with the use of cloprostenol and hCG; (3) normal – with the use of hCG only. Short, both natural and

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6

Efendy, Jauhari, and Frediansyah Firdaus. "Deskripsi dan fenomena yang terjadi pada perkawinan alami sapi Peranakan Ongole (PO) dengan sapi Bali di Kandang Percobaan Loka Penelitian Sapi Potong." Livestock and Animal Research 19, no. 1 (2021): 54. http://dx.doi.org/10.20961/lar.v19i1.41835.

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<p><strong>Objective:</strong> To determine the natural mating behavior pattern of PO bulls with Bali cows in the cattle breeding system using freestall housing of “Litbangtan Model”.</p><p><strong>Methods:</strong> The materials were 63 livestock; 3 PO bulls and 60 Bali cows. The study was designed with a randomized block design (RBD) with three treatments based on the physiological status of Bali cows; namely Treatment A: 20 heifers, Treatment B: 10 heifers and 10 cows, and Treatment C: 20 cows. The parameters observed were the pattern of estrous beh

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Sianturi, Riasari Gail, B. Purwantara, I. Supriatna, Amrozi ., and P. Situmorang. "Optimizing artificial insemination on swamp buffalo (Bubalus bubalis) through synchronization of estrus and ovulation." Jurnal Ilmu Ternak dan Veteriner 17, no. 2 (2013): 92–99. https://doi.org/10.14334/jitv.v17i2.682.

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Artificial insemination (AI) program in swamp buffalo will be more efficient by implementing synchronization of estrus and ovulation. By synchronizing of ovulation, AI can be done at a fixed time schedule without concerning to estrus detection. Gonadotropin Releasing Hormone (GnRH) and human chorionic gonadotropin (hCG) have been used in protocols of estrus synchronization to induce ovulation. A study of AI in swamp buffalo was conducted on 83 buffaloes to evaluate the impact of protocol of estrus synchronization on reproductive efficiency of swamp buffalo. The three protocols used were Ovsync

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Smith, Emily G., Rachael C. Bonacker, Carson M. Andersen, and Jordan M. Thomas. "142 Evaluation of estrus detection patches as a tool to classify postpartum beef cows as estrous cycling or anestrous prior to the start of the breeding season." Journal of Animal Science 98, Supplement_4 (2020): 116–17. http://dx.doi.org/10.1093/jas/skaa278.212.

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Abstract Estrus detection patches were evaluated as a tool to classify postpartum cows as estrous cycling or anestrous at the start of the breeding season. EstrotectTM Breeding Indicators were applied to 257 postpartum beef cows in three locations 25 days prior to the start of estrus synchronization. Coincident with the start of estrus synchronization, patches were scored using a 1 to 4 scale (1 = 0–25%; 2 = 25–50%; 3 = 50–75%; 4 = 75–100%) with scores of 3 or 4 considered activated. Blood samples were collected from each cow 10 days prior to, and at the start of the estrus synchronization. Se

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9

Tippenhauer, Christie Marie, Jan-Lukas Plenio, Augusto Madureira, Wolfgang Heuwieser, and Stefan Borchardt. "Timing of Artificial Insemination Using Sexed or Conventional Semen Based on Automated Activity Monitoring of Estrus in Holstein Heifers." Animals 13, no. 19 (2023): 2994. http://dx.doi.org/10.3390/ani13192994.

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Investigations on the optimum timing of artificial insemination (AI) following automated activity monitoring (AAM) depending on different types of semen in heifers are limited and in part show controversial results. Therefore, the objective of this observational study was to determine the association between the timing of AI using different characteristics of estrus (i.e., the onset, peak, and end of estrus) and pregnancy per AI (P/AI) in Holstein heifers. Heifers were fitted with a neck-mounted AAM system and inseminated with frozen conventional and sexed semen. The pregnancy per AI (n = 4159

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Kusumaningrum, DA, S. Sopiyana, E. Gustiani, et al. "Estrus response to estrus synchronization using prostaglandin nanoparticle in beef cattle in Majalengka regency." IOP Conference Series: Earth and Environmental Science 1377, no. 1 (2024): 012073. http://dx.doi.org/10.1088/1755-1315/1377/1/012073.

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Abstract The study was conducted to determine the estrus response to the applying of prostaglandin nanoparticles (PNp) in two different estrous synchronization protocols. The estrus synchronization occurred in the Majalengka Regency in different years at the same location. The first study (study 1), estrus synchronization was carried out using a single PNp injection protocol, which was preceded by corpus luteum (CL) selection (21 cows). The second study (study 2), double PNp injections were carried out at day-0 and day-11 without prior CL selection (23 cows). The observation of estrus: onset o

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Дисертації з теми "Pregnancy and Estrus"

1

Othen, Leanne Stacey. "Reproductive endocrinology of wood bison during estrus synchronization, superovulation and pregnancy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24494.pdf.

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Dorsey, Benjamin Reese. "Effect of Timing of Insemination and Synchronization of Estrus Method on Artificial Insemination (AI) Pregnancy Rates in Beef Heifers." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/42873.

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Objectives were to evaluate time of insemination relative to estrus and synchronization with melengestrol acetate (MGA) plus prostaglandin (PG) or progesterone insert (CIDR) plus PG on AI pregnancy rate in beef heifers (n = 662) during Fall or Spring. Fall heifers (n = 349) received MGA-PG (MGA for 14 d followed by PG on d 18) or CIDR-PG (CIDR for 7 d, PG administered 1 d before CIDR removal). Estrus was monitored by HeatWatch® (n = 200) or visually (n = 149). Spring heifers (n = 313) underwent CIDR-PG with detection of estrus by HeatWatch®. Heifers not in estrus by 96-100 h after PG were

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Kelany, Khaled Elaraby. "Can Hematocrit Levels at Estrus in Dairy Cows and Sheep Be an Indicator for Pregnancy Success?" Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/31604.

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Despite the major reproductive advances in the livestock industry, prenatal embryonic loss is still one of the major issues that causes substantial economic loss. While there are many tests available to determine pregnancy soon after maternal recognition of pregnancy, most of the prenatal losses are undetectable because it occurs before then. Based on previous research we hypothesized that increased plasma volume around the time of estrus will increase the survivability of the embryo at early stages of gestation. However, our findings indicate that hematocrit levels are not a consistent measur

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Kim, Jin-Goel. "Comparative transcriptional profiling of the uterus according to stage of the estrous cycle and pregnancy status in gilts." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5073.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 9, 2009) Vita. Includes bibliographical references.

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Holland, Sarah C. "Comparison of Luteolysis and Timed Artificial Insemination Pregnancy Rates after Administration of PGF2a in the Muscle or the Ischiorectal Fossa in Cattle." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/56575.

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Prostaglandin F2α (PGF2α) is commonly given to female cattle intramuscularly (IM) for the synchronization of estrus. A novel site for administration of PGF2α that improves beef quality assurance is the ischiorectal fossa (IRF). The objective of this study was to determine whether administration of PGF2α in the IRF results in a similar physiologic response to administration of PGF2α given IM. Yearling angus-cross heifers (n=112) were blocked by weight and randomly assigned within blocks to be injected with 5 mL PGF2α either IM in the neck or in the IRF. Blood samples were taken at 0, 8,

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CALDAS, Eduardo Luiz Cavalcanti. "Efeito macho associado a estratégias de manejo sobre o desempenho reprodutivo de ovelhas Santa Inês no semiárido do Estado de Pernambuco." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5480.

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Submitted by (edna.saturno@ufrpe.br) on 2016-08-25T12:11:06Z No. of bitstreams: 1 Eduardo Luiz Cavalcanti Caldas.pdf: 343939 bytes, checksum: 1af9249e373770cb37beca7e31337a00 (MD5)<br>Made available in DSpace on 2016-08-25T12:11:07Z (GMT). No. of bitstreams: 1 Eduardo Luiz Cavalcanti Caldas.pdf: 343939 bytes, checksum: 1af9249e373770cb37beca7e31337a00 (MD5) Previous issue date: 2011-07-25<br>The aim of this study, divided into two trials, was to evaluate the male effect associated with management strategies on the reproductive performance of Santa Inês ewes raised in a semi-extensive regim

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Buttrey, Brad Sterling. "Human chorionic gonadotropin and gonadotropin-releasing hormone influence pregnancy survival and resynchronized ovulation before timed artificial insemination in Holstein cattle." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/542.

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Silveira, Luísa Lemos. "Comparação entre o primeiro e segundo cio após o parto em éguas da raça crioula e puro sangue de corrida." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/178872.

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A espécie equina apresenta algumas peculiaridades em relação às demais espécies por apresentar baixa taxa de fertilidade. É importante que a égua conceba logo após o parto para que possa gerar um produto por ano. Na fêmea equina, o primeiro cio pós-parto geralmente acontece 5 a 15 dias após o nascimento do produto. No Brasil, a prática da utilização do cio do potro não é frequente, existindo ainda entre os veterinários, a adoção de diferentes protocolos. Além disso, no Sul do Brasil encontramos grandes criatórios de cavalos Puro Sangue De Corrida (PSC) e de cavalos Crioulos, o que diferencia a

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Purcell, Scott Hudson. "Effect Of A Cidr Insert And Flunixin Meglumine Administered At The Time Of Embryo Transfer On Pregnancy Rate And Resynchronization Of Estrus In Beef Cattle." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9992.

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The objectives of this study were to evaluate the effects of flunixin meglumine (FM), an inhibitor of PGF2a synthesis, administered at the time of embryo transfer (ET) and insertion of an intravaginal progesterone-releasing device (CIDR) at the time of ET on pregnancy rates (PR) and the resynchronization of estrus. Beef cows (n = 796) and heifers (n = 108) at three locations were assigned randomly within age to one of four groups in a 2 x 2 factorial arrangement of treatments with injection of FM (500 mg i.m.; Phoenix Scientific, St. Joseph, MO) 2 to 12 min prior to ET and insertion of a CIDR

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CÉSAR, Clarissa Neuman Ramos. "Efeito dos diferentes momentos de inseminação artificial laparoscópica em programas de inseminação artificial em tempo fixo em ovinos." Universidade Federal Rural de Pernambuco, 2013. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5042.

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Submitted by (edna.saturno@ufrpe.br) on 2016-07-19T14:31:33Z No. of bitstreams: 1 Clarissa Neuman Ramos Cesar.pdf: 675969 bytes, checksum: 5383e8c8bb49a0be0d444364ce184d26 (MD5)<br>Made available in DSpace on 2016-07-19T14:31:33Z (GMT). No. of bitstreams: 1 Clarissa Neuman Ramos Cesar.pdf: 675969 bytes, checksum: 5383e8c8bb49a0be0d444364ce184d26 (MD5) Previous issue date: 2013-04-29<br>The use of artificial insemination (AI) accelerates the genetic improvement, prevents transmission of venereal diseases and facilitates testing of progeny besides enabling subfertile males to produce des

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Книги з теми "Pregnancy and Estrus"

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Rijksuniversiteit te Utrecht. Faculteit der Diergeneeskunde., ed. The bovine oestrous cycle and pregnancy in vision. 2nd ed. Intervet International BV, 1996.

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2

Schallenberger, E. Charakterisierung von Sekretionsrhythmen der Gonadotropine und Ovarsteroide während des Brunstzyklus, der Gravidita t und post partum beim Rind. Paul Parey Scientific Publishers, 1990.

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3

Taylor, Stephen A. Laboratory studies of estrus induction and pregnancy maintenance in voles (Microtus). 1990.

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Guía de la OMS sobre detección y tratamiento de la sífilis en embarazadas. Organización Panamericana de la Salud, 2019. http://dx.doi.org/10.37774/9789275321737.

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Las infecciones de transmisión sexual (ITS) constituyen un importante problema de salud pública en todo el mundo, que afecta a la calidad de vida y se acompaña de importantes niveles de morbilidad y mortalidad. Estas infecciones influyen directamente en la salud infantil y reproductiva porque traen consigo infertilidad, cánceres y complicaciones del embarazo. También tienen una influencia indirecta porque facilitan la transmisión por vía sexual del virus de la inmunodeficiencia humana (VIH), pesando así igualmente en la economía de los países y las personas. Cada día, más de un millón de perso

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Частини книг з теми "Pregnancy and Estrus"

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Bazer, Fuller W., Troy L. Ott, and Thomas E. Spencer. "Endocrinology of the Transition from Recurring Estrous Cycles to Establishment of Pregnancy in Subprimate Mammals." In Endocrinology of Pregnancy. Humana Press, 1998. http://dx.doi.org/10.1007/978-1-4612-1804-3_1.

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2

Gallo, R. V., G. N. Babu, A. Bona-Gallo, E. Devorshak-Harvey, R. E. Leipheimer, and J. Marco. "Regulation of Pulsatile Luteinizing Hormone Release During the Estrous Cycle and Pregnancy in the Rat." In Advances in Experimental Medicine and Biology. Springer US, 1987. http://dx.doi.org/10.1007/978-1-4684-5395-9_6.

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Nurjannah, Alif Oktavina, Aulia Puspita Anugra Yekti, Kuswati, Sri Wahjuningsih, and Trinil Susilawati. "Successful Pregnancy Results from Double Dosage Artificial Insemination in Different Estrous Characteristics in Madura Cattle." In Advances in Biological Sciences Research. Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-116-6_33.

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Lin, J. H., S. S. Chang, J. C. Huang, et al. "Changes of Fecal and Plasma Progesterone Levels in Swamp Buffalo Cows (Bubalus Bubalis) During the Estrous Cycle and Pregnancy." In Biotechnology in Agriculture. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1779-1_95.

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KUSTRITZ, MARGARET V. ROOT. "Estrus Suppression, Sterilization, and Pregnancy Termination." In The Dog Breeder's Guide to Successful Breeding and Health Management. Elsevier, 2006. http://dx.doi.org/10.1016/b978-1-4160-3139-0.50015-8.

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Iwersen, Michael, and Marc Drillich. "Developments in automated monitoring of livestock fertility/pregnancy." In Advances in precision livestock farming. Burleigh Dodds Science Publishing, 2022. http://dx.doi.org/10.19103/as.2021.0090.12.

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Livestock production has been characterized by the intensification and specialization of production leading to larger farms and, hence, to more animals per farm worker. Detecting cows in estrus and getting cows pregnant are two of the major challenges in dairy herd management. In addition to the less time available for the individual animal and the increasing employment of non-specialist personnel, today only about 50% of cows in estrus showing a ‘standing-to-be-mounted’ behaviour of an additionally shortened duration of on average 5 hours. As a result of this, many strategies and technologies

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Rodrigues Bonamichi do Couto, Samuel, Lara Nogueira Silenciato, Mariana dos Santos Dutra Okada, Otávia Reis e Silva, Joaquim Esquerdo Ferreira, and Marco Roberto Bourg de Mello. "Use of Progesterone as a Strategy to Improve Reproductive Efficiency in Cattle." In Progesterone - Biological Function and Clinical Application [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005624.

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Progesterone (P4) is a key hormone in the reproductive physiology of cattle, playing a crucial role in regulating the estrous cycle and establishing and maintaining the pregnancy. In the context of reproductive efficiency, the use of P4 has been a strategy increasingly used on rural properties to anticipate puberty, increase pregnancy rates and reduce gestational loss. A common application is the administration of P4, often in the form of intravaginal devices or, more recently, with long-acting injectable progesterone. These methods help synchronize ovulation, allowing more precise management

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Ahmad Shafi, Tawheed, Md Ferozoddin Siddiqui, and Aejaz Ahmad Wani. "Chemical Signaling in Bovines: Understanding the Behavior and Way of Communication." In Bovine Science - Challenges and Advances. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.99834.

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Chemical signals that mediate communication within animals of a species have been referred to as ‘pheromone’ a Greek word comprised of ‘pheran’ (means to transfer) and ‘hormon’ (to excite). These chemical messengers are transported outside the body and have a direct developmental effect on hormone levels and behavior, and therefore, have a potential role in modulating animal behavior and reproductive management. The sources of these chemical messengers are urine, vaginal secretions, feces, saliva, milk, sweat, breath and specialized cutaneous glands including the odor produced from hair and wo

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Gokhale, Golden, Pir Mohammad Ishfaq, and Gurudutt Sharma. "Impact of Heat Stress and Nutritional Stress on Early Embryo Development." In Climate Change and Its Impact on Fertility. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4480-8.ch006.

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The nutritional, physiological, and reproductive function has detrimental effects on heat stress, which is found in many species of mammals. High ambient temperature in mammals cause a decrease in the length and intensity of estrus by disturbing ovarian function as well as decreasing pregnancy rate after artificial insemination. The effects of nutritional stress on developing oocytes in the ovarian follicle and in the reproductive tract on early embryos are because of the environment where a breeding female lives before conception and at the early stages of pregnancy. Maturity of oocyte, blast

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Gokhale, Golden, Pir Mohammad Ishfaq, and Gurudutt Sharma. "Impact of Heat Stress and Nutritional Stress on Early Embryo Development." In Climate Change and Its Impact on Fertility. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4480-8.ch006.

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The nutritional, physiological, and reproductive function has detrimental effects on heat stress, which is found in many species of mammals. High ambient temperature in mammals cause a decrease in the length and intensity of estrus by disturbing ovarian function as well as decreasing pregnancy rate after artificial insemination. The effects of nutritional stress on developing oocytes in the ovarian follicle and in the reproductive tract on early embryos are because of the environment where a breeding female lives before conception and at the early stages of pregnancy. Maturity of oocyte, blast

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Тези доповідей конференцій з теми "Pregnancy and Estrus"

1

Budiyanto, Agung, Erif Maha Nugraha Setyawan, Dwi Sunu Datrianto, Dony Nurcahya, and Budi Pramono. "Application of Artificial Insemination (AI) Tool Based on Oestrus Automatic Detection to Improve Goat Pregnancy in Yogyakarta." In 3rd International Conference on Community Engagement and Education for Sustainable Development. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.151.3.

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This study aims to determine the level of pregnancy in goats and sheep in Indonesia, especially in the Yogyakarta area, by comparing the use of conventional AI devices with AI devices equipped with endoscopes. Many factors, including livestock, breeders, officers, spermatozoa, and environmental factors, strongly influence reproductive performance. The process of pregnancy in goats and sheep begins with the process of estrus, mating, pregnancy, birth, and postpartum estrus as the beginning of a continuous cycle. The problem found that the pregnancy rate in goats and sheep is relatively low. The

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Caraba, Ion Valeriu, Marioara Nicoleta Caraba, Gabi Dumitrescu, Elena Pet, and Roxana Popescu. "OPTIMIZING A PROTOCOL FOR INDUCING AND SYNCHRONIZING ESTRUS IN SHEEP DURING NON-BREEDING SEASON." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/6.2/s25.37.

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Induction and synchronization of estrus during non-breeding season is the most frequently used biotechnological method of assisted reproduction in sheep. Synchronization of estrus in sheep is a very important breeding technique as it can effectively improve the reproductive performance of sheep, minimize the effects of seasonal factors on sheep reproduction, extend the breeding season of sheep, shorten the estrus interval, increase the gestation rate, increase the birth rate, it can also lead to the shortening of the time between generations. The study proposes a method of inducing and synchro

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Ciornei, Stefan, Dan Gheorghe Drugociu, Liliana Ciornei, Florin Nechifor, and Petru Roșca. "Proceduri de embriotransfer la bivoliță (Bivolul indigen românesc)." In Simpozion Ştiinţific Internaţional "50 ani de învăţământ superior medical veterinar din Republica Moldova". Technical University of Moldova, 2025. https://doi.org/10.52326/ismv2024.31.

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Reproduction management in buffaloes is a challenge for practitioners and researchers and any research in this regard is considered to be an important step in the development of bioeconomy. Recently, this species has been marginalized both in the field of research, biodiversity and production. Embryo transfer to ruminants is a biotechnique known and applied all over the world, but at a potential that is below par, compared to the benefits brought. Embryo transfer through the MOET or IVD method (new name), highlights the genetics of the female, those females selected as bull mothers. The ET IVD

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Lukovnikova, L. V., L. A. Lelbiks, and E. E. Lesiovskaya. "EFFECT OF NICKEL AND ITS INSOLUBLE INORGANIC COMPOUNDS ON REPRODUCTIVE FUNCTION OF WHITE RATS." In The 16th «OCCUPATION and HEALTH» Russian National Congress with International Participation (OHRNC-2021). FSBSI “IRIOH”, 2021. http://dx.doi.org/10.31089/978-5-6042929-2-1-2021-1-326-329.

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Abstract. Introduction. The problem of women's health protection in enterprises producing and using nickel and its compounds is particularly relevant, since women make up a significant contingent of workers at some stages of production. Nickel and its compounds are used in the production of high-alloy steels, alloys with copper, chromium, aluminum, as a catalyst in the processes of hydrogenation of fats, in the production of batteries, nickel-plating of metal products. In case of violations of the technological process, labor protection conditions, workers may be exposed to nickel aerosol and

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Лебедева, Л. Ф., та Н. В. Сидорова. "The result of the use of prostaglandin F2A (PGF2α) on barren and pregnant mares". У Достижения молодых учёных - зоотехнической науке и практике. Crossref, 2019. http://dx.doi.org/10.25727/rads.hs.2019.1.24278.

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Проанализировано воздействие препарата Магэстрофан (PGF2α) на холостых и жеребых кобыл. Показано, что однократное ведение PGF2α вызывает наступление эструса у холостых кобыл на 3-4 день, и овуляции - на 8-9 день после инъекции. У жеребых кобыл после стимулированной или спонтанной эмбриональной гибели позднее 35-го дня наступление охоты может су- щественно задерживаться. Для прерывания жеребости у кобыл после 45-50 дня требуется проводить курс ежедневных инъекций PGF2α в течение 2-4 дней. The effect of PGF2α on non-pregnant or pregnant mares was analyzed. It was shown that single administration

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de Almeida, Maria Fernanda Brunetta, Beatriz Rodrigues Neri, Gabrielle Benevides Lima, and Mariana Barbosa Maciel Picanço. "A DIFERENÇA NO MONITORAMENTO E MANEJO DE EVENTOS TROMBOEMBÓLICOS EM GESTANTES COM COVID-19." In I Congresso Brasileiro de Hematologia Clínico-laboratorial On-line. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/627.

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Introdução: A pandemia provocada pelo SARS-CoV-2 trouxe vários questionamentos científicos devido às alterações sistêmicas causadas pela doença, incluindo alterações na hemostasia. No caso da gravidez, há maior complexidade devido à fisiologia do estado hipercoagulável associado, com aumento de alguns fatores de coagulação. Isso demonstra a importância do tema para o estabelecimento de uma abordagem clínica-laboratorial apropriada para manejo das pacientes. Objetivo: Realizar uma revisão de literatura estabelecendo as diferenças no parâmetro de identificação laboratorial e esquema terapêutico

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Terrones Reigada, Álvaro, and Paula Martinez García. "Performance art y teoría de la catástrofe: el instante poético en la desconexión súbita y violenta de un sistema." In V Congreso Internacional de Investigacion en Artes Visuales ANIAV 2022. RE/DES Conectar. Editorial Universitat Politècnica de València, 2022. http://dx.doi.org/10.4995/aniav2022.2022.15361.

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Esta tesela estudia la desconexión súbita y violenta de un elemento (a), desde un sistema (b), centrando la atención sobre el instante en el que este último deja de tener influencia o poder sobre el elemento (a) en sí, como por ejemplo, un sujeto que se desvincula del protocolo que lo somete y desencadena en el sistema un evento catastrófico, entendiéndose sistema como el conjunto ordenado de normas y procedimientos que gobierna de manera ordenada –e incluso a veces educada, erótica o estéticamente–, personas, grupos o colectivos; y entendiéndose como catástrofe lo que vendrá a continuación. C

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Moura, Manoella da Silva, Abigail Gonçalves Da Silva, and Hannacrisle Gomes Dos Santos. "FATORES QUE INTERFEREM NA BAIXA COBERTURA VACINAL CONTRA A INFLUENZA EM GESTANTES." In I Congresso Brasileiro de Doenças Infectocontagiosas On-line. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/2222.

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Introdução: A doença respiratória causada pelo vírus influenza soma mais de 3 milhões de casos ao ano e é responsável por um alto índice de morbimortalidade, principalmente em grupos de riscos, como as gestantes, podendo estas desenvolver a síndrome da angústia respiratória aguda, que leva sérias complicações para a mãe e para o bebê, como parto prematuro e natimortos. A única forma efetiva de prevenção contra casos graves da influenza é a vacinação, na qual confere proteção ainda maior para a mãe e o bebê, visto que os anticorpos maternos são transferidos através da placenta. Apesar da efetiv

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Звіти організацій з теми "Pregnancy and Estrus"

1

Fields, Michael J., Mordechai Shemesh, and Anna-Riitta Fuchs. Significance of Oxytocin and Oxytocin Receptors in Bovine Pregnancy. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568790.bard.

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Oxytocin has multiple actions in bovine reproductive tract and it was our purpose to determine the nature of these actions and their significance for the physiology of bovine reproduction. The bovine oxytocin receptors (OTR) gene was cloned and its expression studied during the cycle and pregnancy. OTR mRNA changed in parallel with OTR with control occurring mainly at the transcriptional level. However, the endocrine regulation of OTR were found in endometrium and cervical mucosa at estrus and at parturition. In both tissues OTR were suppressed in the luteal phase and early pregnancy. Whereas

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Wolfenson, David, William W. Thatcher, and James E. Kinder. Regulation of LH Secretion in the Periovulatory Period as a Strategy to Enhance Ovarian Function and Fertility in Dairy and Beef Cows. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586458.bard.

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The general research objective was to increase herd pregnancy rates by enhancing corpus luteum (CL) function and optimizing follicle development, in order to increase conception rate and embryo survival. The specific objectives were: to determine the effect of the duration of the preovulatory LH surge on CL function; to determine the function of LH during the postovulatory period on CL development; to optimize CL differentiation and follicle development by means of a biodegradable GnRH implant; to test whether optimization of CL development and follicle dynamics in timed- insemination protocol

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3

Chantaraprateep, Peerasak, Nikorn Dusitsin, Chainarong Lohachit, et al. Embryo transfer in Thai swamp buffalo (Bubalus bubalis). Chulalongkorn University, 1989. https://doi.org/10.58837/chula.res.1989.37.

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The present investigation was aimed at 4 objectives 1) responses of buffalo cows to superovulation using gonodotrophin 2)early embryonic development 3) embryo transfer and induction of twinning 4) cryo preservation of embryos using manual and automatic methods. Fourteen Thai swamp buffalo (3 heifers and 11 cows, 4 to 12 years old, weighed 315 to 480 kg were used in this study. Superovulation by using FSH 32 mg (n = 2) and 50 mg. (n = 4) and PMSG 2500 i.u. (n = 2) and 2700 i.u. (n = 3) resulted in average of 50% of treated animals responsed to the treatment. Recovery rate of embryos was 54.5% (

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4

Wolfenson, David, William W. Thatcher, Rina Meidan, Charles R. Staples, and Israel Flamenbaum. Hormonal and Nutritional Stretegies to Optimize Reproductive Function and Improve Fertility of Dairy Cattle during Heat Stress in Summer. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568773.bard.

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The BARD program includes two main parts. In the first, experiments were conducted to complete our understanding of the mechanisms responsible for the impairment of reproductive functions under heat stress. Experiments focused on follicular development and function, since results obtained in our previous BARD project indicate that the preovulatory follicle is susceptible to heat stress. The theca cells, sensitive to thermal stress, produced less androgen during the summer, as well as during the autumn. Similarly, luteinized theca cells obtained from cows in summer produced much less progestero

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5

Hale, Benjamin J., Caixia Yang, and Jason W. Ross. Expression of RNA Binding Proteins DND1 and FXR1 in the Porcine Uterus during the Estrous Cycle and Early Pregnancy. Iowa State University, 2013. http://dx.doi.org/10.31274/ans_air-180814-832.

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Meidan, Rina, and Joy Pate. Roles of Endothelin 1 and Tumor Necrosis Factor-A in Determining Responsiveness of the Bovine Corpus Luteum to Prostaglandin F2a. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7695854.bard.

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The corpus luteum (CL) is a transient endocrine gland that has a vital role in the regulation of the estrous cycle, fertility and the maintenance of pregnancy. In the absence of appropriate support, such as occurs during maternal recognition of pregnancy, the CL will regress. Prostaglandin F2a (PGF) was first suggested as the physiological luteolysin in ruminants several decades ago. Yet, the cellular mechanisms by which PGF causes luteal regression remain poorly defined. In recent years it became evident that the process of luteal regression requires a close cooperation between steroidogenic,

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7

Meidan, Rina, and Robert Milvae. Regulation of Bovine Corpus Luteum Function. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604935.bard.

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The main goal of this research plan was to elucidate regulatory mechanisms controlling the development, function of the bovine corpus luteum (CL). The CL contains two different sterodigenic cell types and therefore it was necessary to obtain pure cell population. A system was developed in which granulosa and theca interna cells, isolated from a preovulatory follicle, acquired characteristics typical of large (LL) and small (SL) luteal cells, respectively, as judged by several biochemical and morphological criteria. Experiments were conducted to determine the effects of granulosa cells removal

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