| dc.contributor.author | Valencia Ocampo, Heli Fernando | |
| dc.contributor.author | Rodríguez Colorado, Nancy | |
| dc.contributor.author | Mantilla, Tatiana | |
| dc.coverage.spatial | Colombia | en_US |
| dc.date.accessioned | 2026-02-27T13:14:04Z | |
| dc.date.available | 2026-02-27T13:14:04Z | |
| dc.date.issued | 2023 | |
| dc.identifier.issn | 2448-6698 | en_US |
| dc.identifier.uri | https://repositorioinstitucional.ufpso.edu.co/xmlui/handle/20.500.14167/6125 | |
| dc.description.abstract | La transferencia de embriones (TE) es considerada actualmente como una herramienta
biotecnológica con gran importancia para multiplicar y obtener individuos con
potencialidades productivas y alto mérito genético. El objetivo de este estudio fue determinar
la influencia de factores como ITH, tamaño del CL, estado de desarrollo del embrión y peso
sobre la tasa de preñez mediante transferencia de embriones por fertilización in vitro en
novillas multirraciales. Se seleccionaron 840 novillas como receptoras, con edades promedio
de 3 años, un peso de 346.5 ± 33.4 kg de peso vivo, a las cuales se les aplicó un protocolo de
sincronización para TE, previo registro del estadio del embrión, seguimiento ecográfico y se
realizó el monitoreo de variables medioambientales. La información se analizó mediante un
modelo de regresión logística para determinar la correlación entre las variables
independientes sobre la variable dicotómica de respuesta tasa de preñez. Se determinó la
influencia del tamaño del cuerpo lúteo (CL) dado las diferencias significativas (P<0.05) en
los tamaños de CL1 y CL2. También, se encontró diferencias (P<0.05) con los estadios de
BL y BX. En contraste, no se encontró diferencias estadísticas (P>0.05) en las demás
variables. El presente estudio evidenció el impacto del tamaño del CL y el desarrollo del
embrión en el éxito de la técnica de TE | en_US |
| dc.language.iso | eng | en_US |
| dc.relation | https://dialnet.unirioja.es/servlet/articulo?codigo=8898622 | en_US |
| dc.title | Factores que afectan la tasa de preñez mediante transferencias de embriones por fertilización in vitro en novillas multirraciales en condiciones de trópico colombiano | en_US |
| dc.title.translated | Factors affecting pregnancy rate through in vitro fertilization embryo transfer in multi-breed heifers under Colombian tropical conditions | en_US |
| dc.contributor.cvlac | 0001708153 | en_US |
| dc.contributor.cvlac | 0001349938 | en_US |
| dc.contributor.googlescholar | liTtUtEAAAAJ | en_US |
| dc.contributor.googlescholar | ZLRSF2MAAAAJ&hl | en_US |
| dc.contributor.orcid | 0000-0002-2627-6414 | en_US |
| dc.contributor.orcid | 0000-0002-1087-3150 | en_US |
| dc.contributor.researchgate | Heli-Valencia-Ocampo | en_US |
| dc.contributor.researchgate | Nancy-Rodriguez | en_US |
| dc.contributor.scopus | 56308418400 | en_US |
| dc.description.abstractenglish | Embryo transfer (ET) is currently considered a biotechnological tool of great importance for multiplying and obtaining individuals with productive potential and high genetic merit. The objective of this study was to determine the influence of factors such as THI, CL size, embryo development stage, and weight on the pregnancy rate using embryo transfer by in vitro fertilization in multi-breed heifers. 840 heifers were selected as recipients, with an average age of 3 years and a live weight of 346.5 ± 33.4 kg. A synchronization protocol for ET was applied, after recording the embryo stage, ultrasound monitoring, and environmental variables. The data were analyzed using a logistic regression model to determine the correlation between the independent variables and the dichotomous response variable of pregnancy rate. The influence of corpus luteum (CL) size was determined, given the significant differences (P<0.05) in CL1 and CL2 sizes. Differences (P<0.05) were also found with the BL and BX stages. In contrast, no statistically significant differences (P>0.05) were found in the other variables. This study demonstrated the impact of CL size and embryonic development on the success of the embryo transfer technique. | en_US |
| dc.subject.proposal | Transferencia de embriones, Índice temperatura humedad (ITH), Fertilización in vitro, Cuerpo lúteo (CL) | en_US |
| dc.subject.keywords | Embryo transfer, Temperature-humidity index (THI), In vitro fertilization, Corpus luteum (CL) | en_US |
| dc.publisher.faculty | Facultad ciencias agrarias y del ambiente | en_US |
| dc.type.redcol | http://purl.org/redcol/resource_type/ART | en_US |
| dc.relation.references | Ferraz PA, Burnley C, Karanja J, Viera-Neto A, Santos JEP, Chebel RC, et al. Factors affecting the success of a large embryo transfer program in Holstein cattle in a commercial herd in the southeast region of the United States. Theriogenology 2016;86(7):1834–1841. | en_US |
| dc.relation.references | Oyuela L, Jiménez C. Factores que afectan la tasa de preñez en programas de transferencia de embriones. Rev Fac Med Vet Zootec 2010;57:191–200. | en_US |
| dc.relation.references | Molina-Coto R. El estrés calórico afecta el comportamiento reproductivo y el desarrollo embrionario temprano en bovinos. Nutr Anim Trop 2017;11(1):1. | en_US |
| dc.relation.references | Ruiz-Jaramillo JI, Vargas-Leitón B, Abarca-Monge S, Hidalgo HG. Heat stress effect on dairy cattle production in Costa Rica. Agron Mesoam 2019;30(3):733–750. | en_US |
| dc.relation.references | Habeeb AA. Impact of climate change in relation to temperature-humidity index on productive and reproductive efficiency of dairy cattle. Int J Vet Anim Med 2020;3(1):124-134. | en_US |
| dc.relation.references | Hasler JF. Forty years of embryo transfer in cattle: A review focusing on the journal Theriogenology, the growth of the industry in North America, and personal reminisces. Theriogenology 2014;81(1):152–169. | en_US |
| dc.relation.references | Baruselli PS, Ferreira RM, Filho MFS, Nasser LFT, Rodrigues CA, Bó GA. Bovine embryo transfer recipient synchronisation and management in tropical environments. Reprod Fertil Dev 2010;22(1):67–74. | en_US |
| dc.relation.references | Pontes JHF, Melo-Sterza FA, Basso AC, Ferreira CR, Sanches BV, Rubin KCP, et al. Ovum pick up, in vitro embryo production, and pregnancy rates from a large-scale commercial program using Nelore cattle (Bos indicus) donors. Theriogenology 2011;75(9):1640–1646. | en_US |
| dc.relation.references | Celis AJ. Epi-Info para Windows. Ediciones 2008. | en_US |
| dc.relation.references | Alkan H, Karaşahin T, Dursun Ş, Satılmış F, Erdem H, Güler M. Evaluation of the factors that affect the pregnancy rates during embryo transfer in beef heifers. Reprod Domest Anim 2020;55(4):421–428. | en_US |
| dc.relation.references | Bó GA, Mapletoft RJ. Evaluation and classification of bovine embryos. Anim Reprod 2013;10(3):344–348. | en_US |
| dc.relation.references | Thomson SP, Holmes RJ, Landes PT, Allworth MB. Assessment and selection of the recipient cows’ corpus luteum at the time of embryo transfer, and its influence on conception rate. Aust Vet J 2021;99(7):288–292. | en_US |
| dc.relation.references | Vieira LM, Rodrigues CA, Mendanha MF, Sá-Filho MF, Sales JNS, Souza AH, et al. Donor category and seasonal climate associated with embryo production and survival in multiple ovulation and embryo transfer programs in Holstein cattle. Theriogenology 2014;82(2):204–212. | en_US |
| dc.relation.references | Do VH, Catt S, Amaya G, Batsiokis M, Walton S, Taylor-Robinson AW. Comparison of pregnancy in cattle when non-vitrified and vitrified in vitro derived embryos are transferred into recipients. Theriogenology 2018;120;105-110. | en_US |
| dc.relation.references | Bényei B, Komlósi I, Pécsi A, Pollott G, Heraldo-Marcos C, De-Oliveira A, et al. The effect of internal and external factors on bovine embryo transfer results in a tropical environment. Anim Reprod Sci 2006;93:268–279. | en_US |
| dc.relation.references | Da-Silva RG, Morais D, Guilhermino MM. Evaluation of thermal stress indexes for dairy cows in tropical regions. Rev Bras Zootec 2007;36(suppl 4):1192–1198. | en_US |
| dc.relation.references | Morton JM, Tranter WP, Mayer DG, Jonsson NN. Effects of environmental heat on conception rates in lactating dairy cows: Critical periods of exposure. J Dairy Sci 2007;90(5):2271–2278. | en_US |
| dc.relation.references | Schüller LK, Burfeind O, Heuwieser W. Impact of heat stress on conception rate of dairy cows in the moderate climate considering different temperature-humidity index thresholds, periods relative to breeding, and heat load indices. Theriogenology 2014;81(8):1050–1057. | en_US |
| dc.relation.references | Cordeiro ALL, Satrapa RA, Gregianini HAG, Gregianini JTF, Maia GFN, LandimAlvarenga FC. Influence of temperature-humidity index on conception rate of Nelore embryos produced in vitro in northern Brazil. Trop Anim Health Prod 2019;52(3):1527– 1532 | en_US |
| dc.relation.references | Díaz RF, Galina CS, Aranda EM, Aceves LA, Sánchez JG, Pablos JL. Effect of temperature humidity index on the onset of post- partum ovarian activity and reproductive behavior in Bos indicus cows. Anim Reprod 2020;17(1):1–11. | en_US |
| dc.relation.references | Beard JK, Silver GA, Scholljegerdes EJ, Summers AF. The effect of precipitation received during gestation on progeny performance in Bos indicus influenced beef cattle. Transl Anim Sci 2019;3:256–262. | en_US |
| dc.relation.references | Mulliniks JT, Cox SH, Kemp ME, Endecott RL, Waterman RC, Van-Leeuwen DM, et al. Relationship between body condition score at calving and reproductive performance in young postpartum cows grazing native range. J Anim Sci 2012; 90:2811-2817. | en_US |
| dc.relation.references | Fernandes CA, Pereira-Palhao M, Silva-Figueiredo AC, Ribeiro JR, Fonseca F, MoreiraViana JH. Weight gain potential affects pregnancy rates in bovine embryo recipients raised under pasture conditions. Trop Anim Health Prod 2015;48:103–107. | en_US |
| dc.relation.references | Scasta J, Henderson L, Smith T. Drought effect on weaning weight and efficiency relative to cow size in semiarid rangeland. J Anim Sci 2015;93:5829–5839. | en_US |
| dc.relation.references | Shorten PR, Morris CA, Cullen NG. The effects of age, weight, and sire on pregnancy rate in cattle. J Anim Sci 2015;93:1535–1545. | en_US |
| dc.identifier.DOI | 10.22319/rmcp.v14i2.6031 | en_US |
