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Yáñez U, Barrio M, Fernández I, Becerra JJ, Herradón PG, Peña AI, Quintela LA. Assessment of Luteal Function Using Rectal Palpation, B-Mode Ultrasonography, and Progesterone Determination to Improve Recipient Selection in Embryo Transfer Programs. Animals (Basel) 2023; 13:2865. [PMID: 37760265 PMCID: PMC10525574 DOI: 10.3390/ani13182865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Proper selection of recipients determines the success of embryo transfer (ET) programs. Therefore, the objectives of this study were to assess the accuracy of rectal palpation (RP) in selecting recipients according to the size and firmness of their corpus luteum (CL) compared to ultrasonography (US) and progesterone determination (P4); to check if US or P4 provide additional information to RP with regard to selecting animals with higher odds of maintaining the pregnancy; and to verify the reliability of the presence of a cavity and the volume of the CL within the ovary (%CLOV) as predictors of the ET outcome. In Experiment 1, measurements for the largest and minor diameter (LADCL and MIDCL), CL area, and P4 at ET day were collected, as well as the RP score, in 94 heifers. In Experiment 2, measurements for the LADCL, MIDCL, CL volume, %CLOV, and presence of a cavity were collected, as well as data about the procedure and metabolic markers, in 108 heifers. No differences were found in Experiment 1, whereas in Experiment 2, just a tendency was observed for the variable of veterinarian. Consequently, these results suggest that RP and US are useful methods to select recipients with, that US and P4 do not offer additional data to use to select animals with higher odds of maintaining pregnancy, and that neither %CLOV nor cavitary CL were good indicators for pregnancy rates.
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Affiliation(s)
- Uxía Yáñez
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Campus Terra, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain; (U.Y.); (J.J.B.); (P.G.H.); (A.I.P.)
| | - Mónica Barrio
- Xénese E.T.E., Barreiros, Sedes, 15596 Narón, Spain; (M.B.); (I.F.)
| | - Ismael Fernández
- Xénese E.T.E., Barreiros, Sedes, 15596 Narón, Spain; (M.B.); (I.F.)
| | - Juan J. Becerra
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Campus Terra, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain; (U.Y.); (J.J.B.); (P.G.H.); (A.I.P.)
| | - Pedro G. Herradón
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Campus Terra, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain; (U.Y.); (J.J.B.); (P.G.H.); (A.I.P.)
| | - Ana I. Peña
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Campus Terra, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain; (U.Y.); (J.J.B.); (P.G.H.); (A.I.P.)
| | - Luis A. Quintela
- Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Campus Terra, Universidade de Santiago de Compostela, Avda. Carballo Calero s/n, 27002 Lugo, Spain; (U.Y.); (J.J.B.); (P.G.H.); (A.I.P.)
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Eggenschwiler M, Lejeune B, Bruckmaier R, Bleul U. [Sonographic studies on the significance of follicle size and corpus luteum morphology in dairy cows after insemination]. Tierarztl Prax Ausg G Grosstiere Nutztiere 2023; 51:218-227. [PMID: 37820627 DOI: 10.1055/a-2124-1345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
OBJECTIVE In dairy cattle, numerous factors determine the success of an insemination. The aim of the present study was to generate findings concerning the association between the preovulatory follicles, the corpora lutea with or without cavities and pregnancy in dairy cows under field conditions. MATERIAL AND METHODS Data was obtained from 176 dairy cows scheduled for artificial insemination. The cows were gynecologically examined using sonography at the time of insemination, 24 hours later, on day 9, on day 34 and after day 42 after insemination. Additionally, blood samples were collected from the coccygeal vein at the time of insemination and on day 9 in order to determine blood progesterone level. RESULTS Depending on the result of the pregnancy test, no difference was detected between the dimensions of the follicles, corpora lutea as well as their cavities and progesterone levels 9 days after insemination in the dairy cows with spontaneous ovulations. In contrast to the corpus luteum without cavity, the surface area of the corpus luteum with cavity remained constant during the study period, while at the same time the cavity decreased in size to a significant degree. In addition, breed differences in corpus luteum sizes were detected on day 34. CONCLUSION No cause was detected for the formation of cavities in corpora lutea and there was no link to the follicle from which the corpus luteum developed. CLINICAL RELEVANCE Both the changes in corpus luteum sizes over time and their breed-related differences could have an impact on insemination outcome.
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Affiliation(s)
| | | | - Rupert Bruckmaier
- Institut für Veterinär-Physiologie, Vetsuisse-Fakultät Universität Bern, Bern, Schweiz
| | - Ulrich Bleul
- Klinik für Reproduktionsmedizin, Departement für Nutztiere, Vetsuisse-Fakultät Universität Zürich, Schweiz
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Pirokad W, Yadmak C, Yama P, Jitjumnong J, U-krit W, Chaikol W, Sangkate M, Promsao N, Montha N, Sudwan P, Mektrirat R, Panatuk J, Intawicha P, Lumsangkul C, Tang PC, Moonmanee T. Increased luteal tissues after secondary corpus luteum formation leads to enhanced progesterone concentrations and improved fertility in repeat-breeder dairy cows during heat stress condition in tropical climate. Trop Anim Health Prod 2022; 54:308. [DOI: 10.1007/s11250-022-03295-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
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