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Andrade JPN, Monteiro PJL, Prata AB, Robl AJ, Neto J, Lippe B, Ribeiro HS, Hartmman D, Sartori R, Wiltbank MC. Optimizing ReBreed21 II: Fertility and reproductive efficiency in different parities during a shortened breeding season in beef cattle. Theriogenology 2024; 224:41-49. [PMID: 38733813 DOI: 10.1016/j.theriogenology.2024.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
This study evaluated the efficiency of a rapid reinsemination program allowing timed AI (TAI) every 21d (ReBreed21) in a commercial beef cow-calf operation. Nelore females from different parities (n = 2085) were synchronized for first TAI (D0 = TAI) using an estradiol/progesterone (E2/P4) protocol and assigned to one of three reinsemination programs: Resynch33 (n = 753), traditional resynch program with second TAI at D42 after first TAI; ReBreed21 (n = 687); or ReBreed21+EC (n = 670). The ReBreed females (n = 1357) received intravaginal P4 insert on D12, on D19 P4 was removed, and a dose of equine chorionic gonadotropin (eCG) was administered, then, ReBreed21 females received 0.6 mg of EC (ReBreed21+EC) or nothing (ReBreed21) and on D21, nonpregnancy (NP) was determined using Doppler ultrasound to detect corpus luteum (CL) blood flow (BF) (NP: <25 % BF pixels of total CL area) and NP cows received immediate TAI and GnRH to induce ovulation. Pregnancy diagnosis was performed at D33 after TAI following all TAIs. Cows considered pregnant at D21, based on CL BF, but NP on D33 were designated False-Positives (FP) and false negatives (FN) were number of nonpregnant cows/heifers on d21 based on the CL BF found to subsequently be pregnant on D33 divided by the total number pregnant. Pregnancy/AI (P/AI) did not differ for the first TAI (55.1 %) among the treatments. Heifers had similar P/AI at the second AI in all groups and similar to the first AI. Primiparous had greater P/AI in ReBreed21+EC and Resynch33 at s TAI compared to ReBreed21, 51.7 %, 55.8 %, 34.2 %, respectively. Multiparous had greater P/AI at second TAI in Resynch33 (60.9 %) than ReBreed21 programs (34.7 %). The percentage FP and FN among ReBreed21 programs did not differ, 13.8 and 0.2 %, respectively. Overall accumulative pregnancies on D21 of the breeding season were greater for ReBreed21 and ReBreed21+EC than Resynch33 (69.7 %, 71.6 %, and 55.5 %, respectively). However, on D42 of the breeding season, only heifers had greater pregnancies in ReBreed21 programs than Resynch33 (73.3 %, 74.3.6 %, and 63.2 %, respectively). Average days to pregnancy were less (P = 0.01) for ReBreed21 and ReBreed21+EC than Resynch33. Thus, the ReBreed21 strategy can improve the efficiency of TAI programs in beef cattle. Of interest, ReBreed21 was particularly effective in nulliparous, somewhat effective in primiparous when EC was added to the program, but relatively ineffective in multiparous beef cattle.
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Affiliation(s)
- João Paulo N Andrade
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, WI, 53706, USA
| | - Pedro J L Monteiro
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, WI, 53706, USA
| | | | | | - José Neto
- Agropecuária Roncador, Querência, MT, 78643-000, Brazil
| | - Beatriz Lippe
- Department of Animal Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | | | | | - Roberto Sartori
- Department of Animal Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Milo C Wiltbank
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, WI, 53706, USA.
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Song M, Hao K, Qi F, Zhao W, Wang Z, Wang J, Hu G. FABP4 mediates endoplasmic reticulum stress and autophagy to regulate endometrial epithelial cell function during early sheep gestation. J Reprod Dev 2023; 69:298-307. [PMID: 37779094 PMCID: PMC10721855 DOI: 10.1262/jrd.2023-015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 09/06/2023] [Indexed: 10/03/2023] Open
Abstract
Dynamic changes in the endometrium are crucial for establishing early pregnancy in ruminants. Blastocyst elongation and implantation require hormones and nutrients to be secreted from the maternal endometrium. The fatty acid-binding protein FABP4 is a widely expressed fatty acid transport protein that promotes cell proliferation, migration, and invasion and is involved in conceptus implantation. However, the mechanism underlying the functional regulation of endometrial epithelial cells (EECs) by FABP4 during ovine peri-implantation remains unclear. We simulated hormonal changes in vitro in sheep EECs (SEECs) during the peri-implantation period and found that it elevated FABP4 expression. FABP4 inhibition significantly reduced cell migration, endoplasmic reticulum stress, and autophagy, suggesting that FABP4 regulates endometrial function in sheep. Moreover, the FABP4 inhibitor BMS309403 counteracted hormone-mediated functional changes in SEECs, and an endoplasmic reticulum stress activator and autophagy inhibitor reversed the abnormal secretion of prostaglandins induced by FABP4 inhibition. These results suggest that FABP4 affects ovine endometrial function during early gestation by regulating endoplasmic reticulum stress and autophagy in SEECs.
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Affiliation(s)
- Meijun Song
- College of Animal Science and Technology, Shihezi University, Xinjiang 832000, China
| | - Kexing Hao
- College of Animal Science and Technology, Shihezi University, Xinjiang 832000, China
| | - Fenghua Qi
- College of Animal Science and Technology, Shihezi University, Xinjiang 832000, China
| | - Wenjuan Zhao
- Xinjiang Academy of Agriculture and Reclamation Sciences, Xinjiang 832000, China
| | - Zhengrong Wang
- Xinjiang Academy of Agriculture and Reclamation Sciences, Xinjiang 832000, China
| | - Jing Wang
- College of Animal Science and Technology, Shihezi University, Xinjiang 832000, China
| | - Guangdong Hu
- College of Animal Science and Technology, Shihezi University, Xinjiang 832000, China
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Reese ST, Franco GA, Schubach KM, Brandao AP, West SM, Cooke RF, Cardoso RC, Williams GL, Pohler KG. Induced prostaglandin release alters steroid concentrations but not pregnancy survival in cows. Domest Anim Endocrinol 2021; 74:106514. [PMID: 32693342 DOI: 10.1016/j.domaniend.2020.106514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 11/27/2022]
Abstract
Embryonic mortality (EM) is a major factor limiting reproductive efficiency in cattle, and despite negative connotations related to reproductive performance, prostaglandin F2α (PGF2α) is capable of being released by the uterus by Day 30 of gestation. Therefore, the objective was to evaluate differences in PGF2α release after an oxytocin challenge between cows with high circulating concentrations of pregnancy-associated glycoproteins (PAGs) vs low PAG because of the association of increased PAG concentrations with pregnancy success. At Day 30 of gestation, pregnant cows were divided into oxytocin treatment (OT; n = 13) and control (CON; n = 12) groups. Treatment cows were further subdivided by circulating PAG concentration (high PAG, n = 7; and low PAG, n = 6). Blood samples were collected every 30 min beginning 1 h before oxytocin administration and continuing for 4 h. Prostaglandin F2α metabolite (PGFM), progesterone, estradiol-17β (E2), and PAG concentrations were quantified. The peak concentration of PGFM occurred 2 h after oxytocin injection in treatment animals and returned to baseline levels by 4 h. No correlations were observed between PAG and PGFM, progesterone, or E2 concentrations (P > 0.05). There was no difference in initial or final PGFM concentrations between groups (P > 0.05). Progesterone and E2 concentrations decreased in cows after treatment of oxytocin (P < 0.05); however, only progesterone returned to basal concentrations by the end of the sampling period. In summary, cows with high vs low PAG concentrations at Day 30 of gestation have a similar PGFM response to oxytocin challenge.
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Affiliation(s)
- S T Reese
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - G A Franco
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - K M Schubach
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - A P Brandao
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - S M West
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - R F Cooke
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - R C Cardoso
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA
| | - G L Williams
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA; Animal Reproduction Laboratory, Texas A&M AgriLife Research, Beeville, TX, USA
| | - K G Pohler
- Pregnancy and Developmental Programming Area of Excellence, Department of Animal Science, Texas A&M University, College Station, TX, USA.
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Ochoa JC, Peñagaricano F, Baez GM, Melo LF, Motta JCL, Garcia-Guerra A, Meidan R, Pinheiro Ferreira JC, Sartori R, Wiltbank MC. Mechanisms for rescue of corpus luteum during pregnancy: gene expression in bovine corpus luteum following intrauterine pulses of prostaglandins E1 and F2α†. Biol Reprod 2017; 98:465-479. [DOI: 10.1093/biolre/iox183] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/25/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Julian C Ochoa
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Francisco Peñagaricano
- Department of Animal Sciences, University of Florida, Gainesville, Florida, USA
- University of Florida Genetics Institute, University of Florida, Gainesville, Florida, USA
| | - Giovanni M Baez
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Agricultural and Animal Sciences, Universidad Francisco de Paula Santander, Cucuta, Colombia
| | - Leonardo F Melo
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Animal Science, Escola Superior de Agricultura “Luiz de Queiroz” University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Jessica C L Motta
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Animal Science, Escola Superior de Agricultura “Luiz de Queiroz” University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Alvaro Garcia-Guerra
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Animal Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Rina Meidan
- Department of Animal Sciences, The Hebrew University of Jerusalem, Rehovot, Israel
| | - João C Pinheiro Ferreira
- Department of Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Roberto Sartori
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Animal Science, Escola Superior de Agricultura “Luiz de Queiroz” University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Milo C Wiltbank
- Department of Dairy Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Arosh JA, Banu SK, McCracken JA. Novel concepts on the role of prostaglandins on luteal maintenance and maternal recognition and establishment of pregnancy in ruminants. J Dairy Sci 2016; 99:5926-5940. [PMID: 27179861 DOI: 10.3168/jds.2015-10335] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 02/03/2016] [Indexed: 11/19/2022]
Abstract
In ruminants, the corpus luteum (CL) of early pregnancy is resistant to luteolysis. Prostaglandin (PG)E2 is considered a luteoprotective mediator. Early studies indicate that during maternal recognition of pregnancy (MRP) in ruminants, a factor(s) from the conceptus or gravid uterus reaches the ovary locally through the utero-ovarian plexus (UOP) and protects the CL from luteolysis. The local nature of the embryonic antiluteolytic or luteoprotective effect precludes any direct effect of a protein transported or acting between the gravid uterus and CL in ruminants. During MRP, interferon tau (IFNT) secreted by the trophoblast of the conceptus inhibits endometrial pulsatile release of PGF2α and increases endometrial PGE2. Our recent studies indicate that (1) luteal PG biosynthesis is selectively directed toward PGF2α at the time of luteolysis and toward PGE2 at the time of establishment of pregnancy (ESP); (2) the ability of the CL of early pregnancy to resist luteolysis is likely due to increased intraluteal biosynthesis and signaling of PGE2; and (3) endometrial PGE2 is transported from the uterus to the CL through the UOP vascular route during ESP in sheep. Intrauterine co-administration of IFNT and prostaglandin E2 synthase 1 (PGES-1) inhibitor reestablishes endometrial PGF2α pulses and regresses the CL. In contrast, intrauterine co-administration of IFNT and PGES-1 inhibitor along with intraovarian administration of PGE2 rescues the CL. Together, the accumulating information provides compelling evidence that PGE2 produced by the CL in response to endometrial PGE2 induced by pregnancy may counteract the luteolytic effect of PGF2α as an additional luteoprotective mechanism during MRP or ESP in ruminants. Targeting PGE2 biosynthesis and signaling selectively in the endometrium or CL may provide luteoprotective therapy to improve reproductive efficiency in ruminants.
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Affiliation(s)
- Joe A Arosh
- Reproductive Endocrinology and Cell Signaling Laboratory, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station 77483.
| | - Sakhila K Banu
- Reproductive Endocrinology and Cell Signaling Laboratory, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station 77483
| | - John A McCracken
- Department of Animal Science, University of Connecticut, Storrs 06269
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