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Gadsby JE, Frandsen S, Chang J, Celestino B, Tucker E, Poole DH. Progesterone inhibits cytokine/TNF-α production by porcine CL macrophages via the genomic progesterone receptor. Domest Anim Endocrinol 2020; 72:106426. [PMID: 32244110 DOI: 10.1016/j.domaniend.2019.106426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/18/2019] [Accepted: 12/06/2019] [Indexed: 11/26/2022]
Abstract
In pigs, luteolytic sensitivity to PGF-2α (=LS) is delayed until d 13 of the estrous cycle. While the control of LS is unknown, it is temporally associated with macrophage (MAC; which secretes tumor necrosis factor [TNF]-α) infiltration into the corpora lutea (CL), and previous studies have shown that TNF-α induces LS in porcine luteal cells (LCs) in culture. This study was designed to explore the control of LS by CL macrophage (CL MAC)/TNF-α by progesterone (P4), and to examine the hypothesis that P4 acting via the genomic P4 receptor (PGR) inhibits CL MAC TNF-α and thus plays a key role in regulating LS during the pig estrous cycle. In experiment 1, the effects of LCs on CL MAC cytokine/TNF-α mRNA expression in co-culture were examined (MID cycle; ~d 7-12; no LS); results showed that LC was inhibitory to cytokine/TNF-α. In experiment 2, the effects of P4 or R5020 (PGR-agonist) on CL MAC cytokine/TNF-α mRNA expression were examined (MID cycle; ~d 7-12; no LS); results showed that both P4 and R5020 dose-dependently inhibited TNF-α. In experiment 3, CL MACs were isolated from CL at MID (~d 7-12; no LS) and LATE (~d 13-18; + LS) cycle, and TNF-α/PGR mRNA measured. Results indicated that while TNF-α mRNA was 4.2-fold greater in CL MACs from LATE vs MID cycle, PGR mRNA was 4.5-fold greater in CL MACs from MID vs LATE cycle. These data support our hypothesis and suggest that progesterone, acting via PGR, plays a critical physiological role in the control of TNF-α production by CL MACs and LS during the pig estrous cycle.
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Affiliation(s)
- J E Gadsby
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.
| | - S Frandsen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - J Chang
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - B Celestino
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - E Tucker
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - D H Poole
- Department of Animal Science, College of Agricultural and Life Sciences, North Carolina State University, Raleigh, NC, USA
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Koester LR, Poole DH, Serão NVL, Schmitz-Esser S. 23 Effect of Genetic Response to Endophyte-Infected Fescue on Beef Cattle Gastrointestinal Tract Microbiota. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- L R Koester
- Interdepartmental Microbiology Graduate Program, Iowa State University, Ames, IA
| | - D H Poole
- Department of Animal Science, North Carolina State University, Raleigh, NC
| | | | - S Schmitz-Esser
- Department of Animal Science, Iowa State University, Ames, IA
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Womble CM, Poole RK, Poole DH, Pickworth CL. 142 Impact of Protein Supplementation on Physiological Response of Steers Consuming Endophyte-Infected Tall Fescue Seed. J Anim Sci 2018. [DOI: 10.1093/jas/sky027.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- C M Womble
- North Carolina State University, Raleigh, NC
| | - R K Poole
- North Carolina State University, Raleigh, NC
| | - D H Poole
- North Carolina State University, Raleigh, NC
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Poole RK, Womble CM, Pickworth CL, Poole DH. 41 “Effect of Protein Supplementation on Immune Response of Weaned Steers Consuming Endophyte-Infected Tall Fescue Seed”. J Anim Sci 2018. [DOI: 10.1093/jas/sky027.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R K Poole
- North Carolina State University, Raleigh, NC
| | - C M Womble
- North Carolina State University, Raleigh, NC
| | | | - D H Poole
- North Carolina State University, Raleigh, NC
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Mayberry K, Khanal P, Poore MH, Serão NVL, Poole DH. 110 Evaluation of Angus Calf Performance Based on Dams Tolerance or Susceptibility to Fescue Toxicosis. J Anim Sci 2018. [DOI: 10.1093/jas/sky027.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Mayberry
- North Carolina State University, Raleigh, NC
| | - P Khanal
- North Carolina State University, Raleigh, NC
| | - M H Poore
- North Carolina State University, Raleigh, NC
| | | | - D H Poole
- North Carolina State University, Raleigh, NC
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Newsome MA, Monn RE, Mayberry K, Poole RK, Young Z, Poore MH, Poole DH. 24 Grazing Novel or Endophyte-Infected Tall Fescue during Mid-Gestation Impacts Cow Performance. J Anim Sci 2018. [DOI: 10.1093/jas/sky027.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M A Newsome
- North Carolina State University, Raleigh, NC
| | - R E Monn
- North Carolina State University, Raleigh, NC
| | - K Mayberry
- North Carolina State University, Raleigh, NC
| | - R K Poole
- North Carolina State University, Raleigh, NC
| | - Z Young
- North Carolina State University, Raleigh, NC
| | - M H Poore
- North Carolina State University, Raleigh, NC
| | - D H Poole
- North Carolina State University, Raleigh, NC
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Monn RE, Shea TP, Mayberry K, Freeman SR, Poole DH, Poore MH. 150 Implementing Shade and Slick Hair Phenotypes Improves Heifer Performance. J Anim Sci 2018. [DOI: 10.1093/jas/sky027.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R E Monn
- North Carolina State University, Raleigh, NC
| | - T P Shea
- North Carolina State University, Raleigh, NC
| | - K Mayberry
- North Carolina State University, Raleigh, NC
| | - S R Freeman
- North Carolina State University, Raleigh, NC
| | - D H Poole
- North Carolina State University, Raleigh, NC
| | - M H Poore
- North Carolina State University, Raleigh, NC
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Lyons SE, Shaeffer AD, Drewnoski ME, Poore MH, Poole DH. Effect of protein supplementation and forage allowance on the growth and reproduction of beef heifers grazing stockpiled tall fescue. J Anim Sci 2017; 94:1677-88. [PMID: 27136026 DOI: 10.2527/jas.2015-9969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Stockpiled tall fescue can provide adequate winter forage for beef cattle, although unsupplemented replacement heifers may display marginal performance before breeding. The objective of this study was to determine if protein supplementation and/or additional forage improves growth and reproductive performance of replacement heifers grazing stockpiled fescue. Cattle averaging 272 ± 1.59 kg were stratified by BW and then randomly assigned to 1 of 4 plots within a pasture replication. Treatment combinations were assigned in a 2 × 2 factorial arrangement and included 1) a conservative forage allocation ("normal," targeting 85% forage use) and mineral supplement (normal forage allocation with mineral supplement [FM]), 2) normal forage allocation with protein tub (FT), 3) more liberal forage allocation ("extra," targeting 70% forage use) and mineral supplement (extra forage allocation with mineral supplement [EM]), and 4) "extra forage allocation with protein tub (ET). Treatments were administered for 8 wk from early November to early January. Heifers were fed fescue hay for 1 wk before breeding in late January. Heifers were synchronized with the 7-d CO-Synch + controlled internal drug release device protocol and inseminated in late January. Heifers were checked for pregnancy by ultrasonography at 35 and 90 d after AI. Main and interaction effects between the 2 treatments were determined. Total supplement intake was greater for protein tub than mineral supplement (0.36 vs. 0.11 kg·heifer·d, respectively; < 0.0001), and the additional dietary protein in the tub groups resulted in greater serum urea N concentrations ( < 0.0001; 8.15 vs. 10.4 mg/dL for mineral and protein tub, respectively). Forage utilization efficiency was greater for normal than extra forage allocation (74.7 vs. 65.8%, respectively; < 0.0001). Main effects of both treatments on ADG were significant ( < 0.0001; 0.28, 0.43, 0.43, and 0.51 kg·heifer·d for FM, FT, EM, and ET, respectively). There was an interaction effect of the 2 treatments on change in BCS ( < 0.05; 0.12, 0.10, 0.18, and 0.31 for FM, FT, EM, and ET, respectively). Reproductive tract scores, pelvic area, and AI pregnancy rates were not different between treatments ( > 0.05). Overall, feeding a protein supplement or providing extra forage increased gain and interacted to increase BCS but did not have an effect on reproductive performance. Supplementing with protein and providing extra forage are strategies that can increase gain in heifers, which could aid heifers in reaching puberty before estrous synchronization.
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Affiliation(s)
- S. J. Board
- Central Electricity Generating Board, Berkeley Nuclear Laboratories Berkeley, Gloucestershire, England
| | - R. B. Duffey
- Central Electricity Generating Board, Berkeley Nuclear Laboratories Berkeley, Gloucestershire, England
| | - C. L. Farmer
- Central Electricity Generating Board, Berkeley Nuclear Laboratories Berkeley, Gloucestershire, England
| | - D. H. Poole
- Central Electricity Generating Board, Berkeley Nuclear Laboratories Berkeley, Gloucestershire, England
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Gadsby JE, Tyson Nipper AM, Faircloth HA, D'Annibale-Tolhurst M, Chang J, Farin PW, Sheldon IM, Poole DH. Toll-like receptor and related cytokine mRNA expression in bovine corpora lutea during the oestrous cycle and pregnancy. Reprod Domest Anim 2017; 52:495-504. [DOI: 10.1111/rda.12940] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 01/10/2017] [Indexed: 12/01/2022]
Affiliation(s)
- JE Gadsby
- Department of Molecular Biomedical Sciences; College of Veterinary Medicine; North Carolina State University; Raleigh NC USA
| | - AM Tyson Nipper
- Department of Animal Science; North Carolina State University; Raleigh NC USA
| | - HA Faircloth
- Department of Molecular Biomedical Sciences; College of Veterinary Medicine; North Carolina State University; Raleigh NC USA
| | - M D'Annibale-Tolhurst
- Department of Molecular Biomedical Sciences; College of Veterinary Medicine; North Carolina State University; Raleigh NC USA
| | - J Chang
- Department of Molecular Biomedical Sciences; College of Veterinary Medicine; North Carolina State University; Raleigh NC USA
| | - PW Farin
- Department of Population Health and Pathobiology and Center for Comparative Medicine and Translational Research; College of Veterinary Medicine; North Carolina State University; Raleigh NC USA
| | - IM Sheldon
- Institute of Life Science; College of Medicine; Swansea University; Swansea UK
| | - DH Poole
- Department of Animal Science; North Carolina State University; Raleigh NC USA
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Pickworth CL, Bell LM, Greene W, Whisnant CS, Poole DH. Site of PGF 2α injection does not alter effectiveness of the Select Synch + controlled internal drug release and timed artificial insemination protocol. Theriogenology 2017; 87:161-166. [PMID: 27658746 DOI: 10.1016/j.theriogenology.2016.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 08/08/2016] [Accepted: 08/18/2016] [Indexed: 10/21/2022]
Abstract
Beef Quality Assurance programs have contributed to significant improvements in the wholesomeness of beef available for consumption. Injection site blemishes in the round have declined since the promotion of administering intramuscular injections in the neck. Unfortunately, many producers continue to administer estrus synchronization (ES) drugs in the rump. The objective of this study was to compare the effectiveness of injection site of PGF2α, in ES protocols, on steroid hormone concentrations and pregnancy rates. A Select Synch + 7-day controlled internal drug release ES protocol was conducted with the site of PGF2α injection alternated between neck and rump in beef cattle (n = 312) at the Ohio State University Agricultural Technical Institute and North Carolina State University. Blood samples (n = 75) were collected at controlled internal drug release insertion and at the time of artificial insemination (AI) to determine if progesterone (P4) and estrogen (E2) concentrations varied due to PGF2α injection site. All cattle were confirmed pregnant by ultrasonography at approximately 30 and 90 days after insemination in North Carolina and approximately 70 days after insemination in Ohio. Data were analyzed as randomized complete block designs in PROC GLIMMIX with animal as the experimental unit. Differences were declared significant at P < 0.05. Site of PGF2α injection, in either the neck or rump, did not affect (P > 0.05) overall conception rates in response to AI (58.4% and 55.6%, respectively). Altering PGF2α injection site did not impact P4, E2 concentrations, or the P4:E2 ratio at AI (P > 0.05). However, cattle inseminated after displaying estrus had greater (P < 0.05) pregnancy rates than timed AI (67.8 vs. 47.5%, respectively). First service conception rates and pregnancy rates were consistent with previous reports. Overall, altering the location of the PGF2α injection during ES did not change circulating hormone concentrations at AI or pregnancy rates; therefore, cattle producers should follow Beef Quality Assurance guidelines when administering ES protocols.
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Affiliation(s)
- C L Pickworth
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA; Department of Animal Science, The Ohio State University Agricultural Technical Institute, Wooster, Ohio, USA
| | - L M Bell
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA
| | - W Greene
- Department of Animal Science, The Ohio State University Agricultural Technical Institute, Wooster, Ohio, USA
| | - C S Whisnant
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA
| | - D H Poole
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA.
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Galliou JM, Khanal P, Mayberry K, Poore MH, Poole DH, Serão NV. 113 Evaluating the Accuracy of a New Commercial Genetic Test for Response to Fescue Toxicosis in Cattle. J Anim Sci 2016. [DOI: 10.2527/ssasas2017.0113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mayberry K, Devine TL, Poore MH, Serão NV, Poole DH. 080 Evaluation of Angus Cattle Hair Coat Length and Its Associations with Tolerance to Fescue Toxicosis. J Anim Sci 2016. [DOI: 10.2527/ssasas2017.080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Poole RK, Devine TL, Mackey JC, Poore MH, Poole DH. 040 Ergot Alkaloids from Endophyte-Infected Tall Fescue Alters Ovarian Follicle Growth and Development in Beef Heifers. J Anim Sci 2016. [DOI: 10.2527/ssasas2017.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Khanal P, Mayberry K, Poore MH, Poole DH, Serão NV. 038 Effect of Genetic Response to Fescue Toxicity on Body Weight, Body Temperature, Hair Coat, Hair Shed and Body Condition Score in Angus Cows. J Anim Sci 2016. [DOI: 10.2527/ssasas2017.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bostian AW, Lyons SE, Mackey JC, Pickworth CL, Poore MH, Poole DH. 041 Chronic Exposure to Ergot Alkaloids Suppresses Growth Hormone in Beef Steers. J Anim Sci 2016. [DOI: 10.2527/ssasas2017.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mackey JC, Devine TL, Kennedy PM, Tyson AM, Poore MH, Poole DH. 034 Impact of Progesterone Supplementation on Pregnancy Rates Following Timed AI or Embryo Transfer in Beef Cattle Consuming Endophyte-Infected Fescue. J Anim Sci 2016. [DOI: 10.2527/ssasas2015-034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Poole DH, Lyons SE, Mackey JC, Tyson AM, Shaeffer G, Poore MH. 060 Ergot alkaloid induced vasoconstriction of bovine uterine and ovarian blood vessels. J Anim Sci 2016. [DOI: 10.2527/ssasas2015-060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Devine TL, Mackey JC, Shaeffer G, Poore MH, Poole DH. 077 Hair Coat Phenotype in Heifers Alters Physiological Responsiveness to Ergot Alkaloids Commonly Found in Endophyte-Infected Tall Fescue. J Anim Sci 2016. [DOI: 10.2527/ssasas2015-077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Poore MH, Poole DH. 127 Potential for more intensive Cow-Calf production in the Southeast Region. J Anim Sci 2016. [DOI: 10.2527/ssasas2015-127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Muth-Spurlock AM, Poole DH, Whisnant CS. Comparison of pregnancy rates in beef cattle after a fixed-time AI with once- or twice-used controlled internal drug release devices. Theriogenology 2015; 85:447-51. [PMID: 26474689 DOI: 10.1016/j.theriogenology.2015.09.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/06/2015] [Accepted: 09/08/2015] [Indexed: 11/17/2022]
Abstract
The use of fixed-time artificial insemination (FTAI) provides producers with numerous benefits including the use of superior genetics, shorter breeding and calving seasons, and a more uniform calf crop. However, the cost of implementing FTAI protocols is one of the several drawbacks hindering their use in the beef industry. Potential injection-site lesions from intramuscular injections of the hormones necessary for estrus synchronization are also a cause of concern for carcass quality. The objectives of this experiment were to (1) determine whether or not a twice-used controlled internal drug release (CIDR) device would be effective in an FTAI protocol without adversely affecting pregnancy rate and (2) whether or not the subcutaneous administration of PGF2α affects pregnancy rate. Nulliparous females (n = 99) between 13 and 27 months of age and multiparous cows (n = 43) between 48 and 74 months of age were synchronized for estrus using the 7-day CO-Synch + CIDR protocol. The females were randomly assigned to one of the two treatments: (1) a once-used CIDR (control) or (2) a twice-used CIDR device (treatment) incorporated into their synchronization protocol. The females were also randomly assigned to have their injection of PGF2α administered either intramuscularly or subcutaneously. Blood was taken in a random subset of nulliparous females (n = 52) just before device removal and assayed for concentration of progesterone. The concentration of progesterone was higher (P = 0.01) in the animals that received once-used CIDR devices than that in those received twice-used CIDR devices (3.4 ± 0.5 and 1.4 ± 0.5 ng/mL, respectively). There was no significant effect of parity (P = 0.82), artificial insemination technician (P = 0.60), PGF2α administration (P = 0.83), or treatment (P = 0.67) on pregnancy rates to artificial insemination which were 75.4 ± 6.0% and 71.7 ± 6.4%, for animals that received once- and twice-used CIDR devices, respectively. This study provides evidence that although concentration of progesterone is decreased in animals treated with a twice-used CIDR device, there is still a sufficient release of progesterone from the device to effectively synchronize estrus without adversely affecting the fertility of a herd.
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Affiliation(s)
- A M Muth-Spurlock
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA
| | - D H Poole
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA
| | - C S Whisnant
- Department of Animal Science, North Carolina State University, Raleigh, North Carolina, USA.
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Holler TL, Dean M, Taylor T, Poole DH, Thonney ML, Thomas DL, Pate JL, Whitley N, Dailey RA, Inskeep EK. Effects of service sire on prenatal mortality and prolificacy in ewes1. J Anim Sci 2014; 92:3108-15. [DOI: 10.2527/jas.2013-7489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T. L. Holler
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26506-6108
| | - M. Dean
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26506-6108
| | - T. Taylor
- Department of Animal Science, University of Wisconsin, Madison 53706
| | - D. H. Poole
- Department of Animal Science, The Ohio State University, Wooster 44691
| | - M. L. Thonney
- Department of Animal Science, Cornell University, Ithaca, NY 14850
| | - D. L. Thomas
- Department of Animal Science, University of Wisconsin, Madison 53706
| | - J. L. Pate
- Department of Animal Science, The Ohio State University, Wooster 44691
| | - N. Whitley
- Department of Agriculture, Food and Resource Sciences, University of Maryland, Eastern Shore, Princess Anne 21853
| | - R. A. Dailey
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26506-6108
| | - E. K. Inskeep
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26506-6108
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Ocón-Grove OM, Poole DH, Johnson AL. Bone morphogenetic protein 6 promotes FSH receptor and anti-Müllerian hormone mRNA expression in granulosa cells from hen prehierarchal follicles. Reproduction 2012; 143:825-33. [PMID: 22495888 DOI: 10.1530/rep-11-0271] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A growing body of literature provides evidence of a prominent role for bone morphogenetic proteins (BMPs) in regulating various stages of ovarian follicle development. Several actions for BMP6 have been previously reported in the hen ovary, yet only within postselection (preovulatory) follicles. The initial hypothesis tested herein is that BMP6 increases FSH receptor (FSHR) mRNA expression within the granulosa layer of prehierarchal (6-8 mm) follicles (6-8 GC). BMP6 mRNA is expressed at higher levels within undifferentiated (1-8 mm) follicles compared with selected (≥9 mm) follicles. Recombinant human (rh) BMP6 initiates SMAD1, 5, 8 signaling in cultured 6-8 GC and promotes FSHR mRNA expression in a dose-related fashion. In addition, a 21 h preculture with rhBMP6 followed by a 3 h challenge with FSH increases cAMP accumulation, STAR (StAR) expression, and progesterone production. Interestingly, rhBMP6 also increases expression of anti-Müllerian hormone (AMH) mRNA in cultured 6-8 GC. This related BMP family member has previously been implicated in negatively regulating FSH responsiveness during follicle development. Considering these data, we propose that among the paracrine and/or autocrine actions of BMP6 within prehierarchal follicles is the maintenance of both FSHR and AMH mRNA expression. We predict that before follicle selection, one action of AMH within granulosa cells from 6 to 8 mm follicles is to help suppress FSHR signaling and prevent premature granulosa cell differentiation. At the time of selection, we speculate that the yet undefined signal directly responsible for selection initiates FSH responsiveness. As a result, FSH signaling suppresses AMH expression and initiates the differentiation of granulosa within the selected follicle.
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Affiliation(s)
- O M Ocón-Grove
- Center for Reproductive Biology and Health, The Pennsylvania State University, 227 Henning Building, University Park, Pennsylvania 16802, USA
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Pickworth CL, Loerch SC, Velleman SG, Pate JL, Poole DH, Fluharty FL. Adipogenic differentiation state-specific gene expression as related to bovine carcass adiposity1. J Anim Sci 2011; 89:355-66. [DOI: 10.2527/jas.2010-3229] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Brzezicka E, Poole DH, Pate JL. T Lymphocyte Responses to Luteal Cells Are Modified by Cell-Cell Interactions Among Distinct Classes of T Lymphocytes. Biol Reprod 2009. [DOI: 10.1093/biolreprod/81.s1.605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Starbuck MJ, Poole DH, Inskeep EK. Ability of induced corpora lutea to maintain pregnancy from the third month of gestation to term in cattle. Theriogenology 2006; 66:383-6. [PMID: 16414106 DOI: 10.1016/j.theriogenology.2005.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2005] [Accepted: 12/05/2005] [Indexed: 11/25/2022]
Abstract
The local relationship between the pregnant uterine horn and the CL during maternal recognition of pregnancy is well-documented. It continues beyond that time; pregnancies were maintained in lutectomized cows when CL were induced on the ovary ipsilateral, but not contralateral, to the uterine horn of pregnancy during Days 28-53. This study evaluated factors affecting maintenance of pregnancy by CL induced after Day 53, in lutectomized cows that had received exogenous progesterone from Day 29 to 15 days after induction of a CL. Twenty-four suckled beef cows were lutectomized on Day 29 of gestation; pregnancy was maintained with progesterone from two controlled internal drug releasing (CIDR) inserts, exchanged every 5 days. Beginning on Day 53, ovaries and viability of pregnancy were evaluated by ultrasonography every 5 days. When a follicle >or=10 mm in diameter was present ipsilateral to the fetus, each cow received 1,000 IU of hCG. Following induction of a CL (20 of 24), progesterone was reduced to a single CIDR for 5 days, then removed. Retention of pregnancy was confirmed by rectal palpation and calving. Cows with induced CL maintained pregnancy to term, including four with the CL contralateral to the fetus. Three cows failed to form normal CL by Day 98 and lost pregnancy after removal of exogenous progesterone. One cow that did not respond to hCG lost pregnancy during exogenous progesterone. In conclusion, CL induced after Day 53 maintained pregnancy to term, even when induced contralateral to the pregnant uterine horn.
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Affiliation(s)
- M J Starbuck
- Division of Animal and Veterinary Sciences, West Virginia University, Morgantown, 26506-6108, USA
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