1
|
Bisinotto DZ, Degan Mattos AC, Bonacim PM, Feltrin IR, Guimarães da Silva A, Poit DAS, Neto AL, Marques HS, Guimarães Peres RF, Pugliesi G. Impact of 17β-estradiol administration at the moment of timed-AI in Nelore cows with small dominant follicle or not showing estrus. Theriogenology 2024; 224:143-155. [PMID: 38776702 DOI: 10.1016/j.theriogenology.2024.05.008] [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: 12/04/2023] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
We aimed to evaluate the effects of administering estradiol (E-17β) at the moment of timed-AI (TAI) on uterine gene expression, estrous expression rate (EER), and pregnancy rate (P/TAI) in Nelore cows with a small dominant follicle (DF) or not showing estrus at TAI. In Experiments 1 and 2 (Exp1, Exp2) cows were submitted to a P4/E-17β-based protocol (day 0) for synchronization of ovulation. On day 7, devices were removed, cows received 1 mg E-17β cypionate and 12.5 mg dinoprost. On day 9, cows with DF < 11.5 mm in diameter were split into different groups. In Exp1 (n = 16/group): Control (no treatment), E-2 (2 mg E-17β) and E-4 (4 mg E-17β). In Exp2: Control (n = 12); E-2 (n = 14); GnRH (0.1 mg gonadorelin acetate, n = 13); and E-2+GnRH (association of GnRH and E-17β, n = 13). Between days 9 and 11, endometrial thickness (ET), time of ovulation detection, and EER were recorded. In Exp1, a uterine cytological sample was collected 4 h after treatment to evaluate the transcript expression of receptors for E-17β (ESR1 and ESR2), oxytocin (OXTR), and P4 (PGR). In Experiment 3 (Exp3), 3829 suckled cows were submitted to a P4/E-17β-based protocol for TAI. On day 9, devices were removed and cows received 1 mg E-17β cypionate and 0.4 mg sodium cloprostenol. On day 11, TAI was performed and cows that did not demonstrate estrus received 0.1 mg gonadorelin acetate, and were allocated into two groups: GnRH (n = 368) and E-2+GnRH (2 mg E-17β; n = 363). In Exp1, plasma E-17β concentrations increased at 4 h after treatment in a dose-dependent manner but reduced at 12 h. The E-17β-treated cows had greater transcript abundance for OXTR and lesser for ESR1 and ESR2, and the ET was reduced 12 h after treatment (P < 0.05). No significant difference (P > 0.1) was observed between the E-17β doses in estrus or ovulation rate. In Exp2, the interval from treatment to ovulation was longer (P < 0.05) in the E-17β group. GnRH-treated cows showed higher ovulation rates (89 vs. 35 %) compared to cows not treated with GnRH, as E-17β-treated cows (P < 0.01) had a lower ovulation rate compared to those not receiving E-17β (44 vs. 78 %). In Exp3, P/TAI was 55 % for cows in estrus. For those not showing estrus, no difference (P > 0.1) in P/TAI was observed between GnRH (34 %) and E-2+GnRH (31 %) groups. Cows with a DF ≥ 11 mm (n = 192) had a greater (P < 0.05) P/TAI (49 %) than those with DF < 11 mm (n = 377; 29 %). In conclusion, E-17β administration in the moment of TAI modulates the mRNA expression of uterine receptors in cows with a small DF but does not impact the P/TAI compared with GnRH treatment in suckled Nelore not showing estrus previous to TAI.
Collapse
Affiliation(s)
- Danilo Zago Bisinotto
- Department of Animal Reproduction, University of São Paulo - USP, Pirassununga, SP, Brazil
| | - Ana Clara Degan Mattos
- Department of Animal Reproduction, University of São Paulo - USP, Pirassununga, SP, Brazil
| | - Paulo Mielli Bonacim
- Department of Animal Reproduction, University of São Paulo - USP, Pirassununga, SP, Brazil
| | - Isabella Rio Feltrin
- Department of Pharmacology and Biotechnology, São Paulo State University - UNESP, Botucatu, SP, Brazil
| | | | | | - Adomar Laurindo Neto
- Department of Animal Reproduction, University of São Paulo - USP, Pirassununga, SP, Brazil
| | | | | | - Guilherme Pugliesi
- Department of Animal Reproduction, University of São Paulo - USP, Pirassununga, SP, Brazil.
| |
Collapse
|
2
|
Ketchum JN, Quail LK, Epperson KM, Guy CP, Rich JJJ, Zoca SM, Kline AC, Andrews TN, Walker JA, Piza Fontes PL, Johnson SK, Owen MPT, Eborn D, Harvey KM, Summers AF, Perry GA. Evaluation of two beef cow fixed-time AI protocols that utilize presynchronization. Theriogenology 2024; 213:59-65. [PMID: 37797530 DOI: 10.1016/j.theriogenology.2023.09.017] [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: 07/16/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/07/2023]
Abstract
Presynchronization was evaluated as a method to improve estrus response before fixed-time AI (FTAI). The objective was to compare FTAI results in beef cows from two different presynchronization approaches. Blood samples were collected on Day -14 (Day 0 = CIDR removal) to determine progesterone concentration (≥1 ng/mL = high, <1 ng/mL = low). In a subset (n = 1289), an additional blood sample was collected between Day -21 and -29 to determine cyclicity (if both the Day -14 and Day -21 to -29 samples were classified as low progesterone cows were classified as noncycling). Cows (n = 1388) from 30 herds were grouped by days postpartum (DPP) and age, and randomly assigned to either of two protocols. Cows assigned to the PG 6-day CIDR & FTAI protocol (PG6d) received prostaglandin F2α (PG) on Day -9, CIDR insertion and GnRH on Day -6, and CIDR removal and PG on Day 0. Cows assigned to the 7&7 Synch protocol (7&7) were administered PG and CIDR insertion on Day -14, GnRH on Day -7, and CIDR removal and PG on Day 0. For both protocols, FTAI occurred concurrently with GnRH 66 h after second PG. Pregnancy was determined by transrectal ultrasonography 30-40 d after FTAI. The GLIMMIX procedure of SAS was used to detect differences in estrus response and pregnancy success with herd as a random variable. Estrus response (0-66 h) was analyzed with two models, one included cyclicity and another replaced cyclicity with progesterone concentration at Day -14. In both models, cows assigned to the 7&7 protocol had greater (P < 0.01) estrus response than cows assigned to the PG6d protocol. The model including cyclicity, estrus response was impacted by the cyclicity by DPP interaction (P = 0.03), cyclicity by protocol interaction (P = 0.04), and the tendency of BCS by protocol interaction (P = 0.08). In the estrus response model that included progesterone concentration at Day -14, significant variables included the protocol by progesterone concentration at Day -14 (P = 0.01), and BCS (P < 0.01), while DPP (P = 0.08) and progesterone concentration at Day -14 (P = 0.07) were tendencies. Pregnancy success was influenced by estrual status (P < 0.01), body condition score (P = 0.04), and cycling status (P = 0.02), but was not influenced by protocol (P = 0.75; PG6d = 38 ± 5% and 7&7 = 37 ± 5%). In conclusion, effectiveness of presynchronization method depended on a cows' physiological status, and the 7&7 protocol increased estrus response compared with PG6d, but there was no difference in pregnancy success.
Collapse
Affiliation(s)
- Jaclyn N Ketchum
- Texas A&M University, Department of Animal Science, College Station, TX, 77843, USA; Texas A&M AgriLife Research, Overton, TX, 75684, USA
| | - Lacey K Quail
- Texas A&M University, Department of Animal Science, College Station, TX, 77843, USA; Texas A&M AgriLife Research, Overton, TX, 75684, USA
| | - Kaitlin M Epperson
- Texas A&M University, Department of Animal Science, College Station, TX, 77843, USA; Texas A&M AgriLife Research, Overton, TX, 75684, USA; Northwest Missouri State University, School of Agricultural Sciences, Maryville, MO, 64468, USA
| | - Chloey P Guy
- Texas A&M AgriLife Research, Overton, TX, 75684, USA
| | - Jerica J J Rich
- Arkansas State University, College of Agriculture, Jonesboro, AR, 72467, USA
| | - Saulo Menegatti Zoca
- South Dakota State University, Department of Animal Science, Brookings, SD, 57007, USA; University of Tennessee, Department of Animal Science, Knoxville, TN, 37996, USA
| | - Adalaide C Kline
- South Dakota State University, Department of Animal Science, Brookings, SD, 57007, USA; Colby Community College, Colby, KS, 67701, USA
| | - Taylor N Andrews
- South Dakota State University, Department of Animal Science, Brookings, SD, 57007, USA; New Mexico State University, Department of Animal and Range Sciences, Las Cruces, NM, 88003-8003, USA
| | - Julie A Walker
- South Dakota State University, Department of Animal Science, Brookings, SD, 57007, USA
| | | | - Sandy K Johnson
- Kansas State University, Northwest Research & Extension Center, Colby, KS, 67701, USA
| | - Megan P T Owen
- Texas A&M University-Commerce, College of Agricultural Sciences and Natural Resources, Commerce, TX, 75428, USA
| | - Douglas Eborn
- Texas A&M University-Commerce, College of Agricultural Sciences and Natural Resources, Commerce, TX, 75428, USA
| | - Kelsey M Harvey
- Mississippi State University, Prairie Research Unit, Prairie, MS, 39756, USA
| | - Adam F Summers
- New Mexico State University, Department of Animal and Range Sciences, Las Cruces, NM, 88003-8003, USA
| | | |
Collapse
|
3
|
Sales A, Cappellozza BI, Vilela E, Claro Júnior I, Sá Filho OG, Vasconcelos JLM. Effects of estradiol cypionate dosage and body condition on reproductive performance of Nellore cattle synchronized for timed-artificial insemination. Theriogenology 2023; 210:207-213. [PMID: 37527622 DOI: 10.1016/j.theriogenology.2023.07.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 08/03/2023]
Abstract
This experiment was designed to evaluate the effects of increasing doses of estradiol cypionate (ECP) and different body condition score (BCS) on reproductive performance of Bos indicus beef females assigned to a timed-artificial insemination (TAI) management. In this experiment, 1683 Bos indicus Nellore cows were blocked by parity and assigned to receive 1) an intravaginal P4 device (1.9 g of P4) and 2.0 mg of estradiol benzoate on day -11, 12.5 mg (i.m.) of dinoprost tromethamine, 300 IU (i.m.) of equine chorionic gonadotrophin, 0.6 mg (i.m.) of estradiol cypionate and CIDR withdrawal on day -2, followed by TAI on day 0 (n = 849; 0.6ECP) or 2) the same synchronization protocol with 1.0 mg of ECP on day -2 (n = 834; 1.0ECP). In both treatments, estrus expression was measured between days -2 and 0. Body condition score (BCS) was evaluated on days -11, 31, and 71 of the experiment and the BCS variation (Δ) was also determined between these timepoints. Transrectal ultrasonography was performed on days 31, 71, and 111 for pregnancy rate determination. All binary data were analyzed using cow as the experimental unit with GLIMMIX, whereas continuous variables were analyzed with the MIXED procedure of SAS. No treatment effects were observed on estrus expression rate. Treatment × BCS interactions were observed for pregnancy rates in all time points (days 31, 71, and 111), as 1.0ECP cows with a LOW BCS also had a greater P/AI than cows assigned to 0.6ECP. In summary, increasing the dose of ECP benefited the reproductive performance of Nellore beef cows with a reduced BCS (≤2.75), whereas no benefits were seen when the BCS was considered adequate (>2.75).
Collapse
Affiliation(s)
- A Sales
- Lageado Biotecnologia e Pecuária, Mineiros, GO, 75830-000, Brazil
| | | | - E Vilela
- Lageado Biotecnologia e Pecuária, Mineiros, GO, 75830-000, Brazil
| | | | | | - J L M Vasconcelos
- Department of Animal Production, São Paulo State University, Botucatu, SP, 18168-000, Brazil.
| |
Collapse
|
4
|
Perry GA, Ketchum JN, Quail LK. Importance of preovulatory estradiol on uterine receptivity and luteal function. Anim Reprod 2023; 20:e20230061. [PMID: 37720725 PMCID: PMC10503890 DOI: 10.1590/1984-3143-ar2023-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/18/2023] [Indexed: 09/19/2023] Open
Abstract
Animals that exhibited estrus had greater pregnancy success compared to animals that did not exhibit estrus before fixed-time AI (FTAI). Estradiol is synthesized in bovine ovarian follicles under gonadotropin regulation and can directly and indirectly regulate the uterine receptivity and luteal function. Estradiol concentrations at FTAI impacted oviductal gene expression and has been reported to play an important role in establishing the timing of uterine receptivity. These changes have been reported to impact uterine pH and sperm transport to the site of fertilization. After fertilization, preovulatory estradiol has been reported to improve embryo survival likely by mediating changes in uterine blood flow, endometrial thickness and changes in histotroph. Cows with greater estradiol concentrations at the time of GnRH-induced ovulation also had a larger dominant follicle size and greater circulating progesterone concentrations on day 7. Therefore, it is impossible to accurately determine the individual benefit of greater estradiol concentrations prior to ovulation and greater progesterone concentrations following ovulation to pregnancy establishment, as these two measurements are confounded. Research has indicated an importance in the occurrence and timing of increasing preovulatory concentrations of estradiol, but increasing estradiol concentrations by supplementation may not be sufficient to increase fertility. Increased production of estradiol by the preovulatory follicle may be required to enhance fertility through the regulation of sperm transport, fertilization, oviductal secretions, the uterine environment, and embryo survival.
Collapse
Affiliation(s)
| | - Jaclyn Nicole Ketchum
- Texas A&M AgriLife Research, Overton, Texas, United States of America
- Department of Animal Science, Texas A&M University, College Station, Texas, United States of America
| | - Lacey Kay Quail
- Texas A&M AgriLife Research, Overton, Texas, United States of America
- Department of Animal Science, Texas A&M University, College Station, Texas, United States of America
| |
Collapse
|
5
|
Ketchum JN, Perry GA, Quail LK, Epperson KM, Ogg MA, Zezeski AL, Rich JJJ, Zoca SM, Kline AC, Andrews TN, Ortega MS, Smith MF, Geary TW. Influence of preovulatory estradiol treatment on the maintenance of pregnancy in beef cattle receiving in vivo produced embryos. Anim Reprod Sci 2023; 255:107274. [PMID: 37320862 DOI: 10.1016/j.anireprosci.2023.107274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 04/12/2023] [Accepted: 06/02/2023] [Indexed: 06/17/2023]
Abstract
This experiment was designed to determine the role of preovulatory estradiol in pregnancy retention after embryo transfer (ET). Cows were synchronized with the 7-d CO-Synch + CIDR® protocol. On d0 (d-2 =CIDR® removal), cows were grouped by estrual status (estrual [Positive Control] and nonestrual), and nonestrual cows were administered Gonadotropin Releasing Hormone (GnRH) and randomly assigned to either no treatment (Negative Control) or Estradiol (0.1 mg estradiol 17-β IM). All cows received an embryo on d7. Pregnancy status was retrospectively classified on d56, 30, 24, and 19 by either ultrasonography, plasma pregnancy-associated glycoproteins analysis (PAGs), expression of interferon-stimulated genes, plasma progesterone (P4) concentrations, or a combination of the factors. There was no difference in estradiol concentrations on day 0 h 0 (P > 0.16). At day 0 h 2, Estradiol cows (15.7 ± 0.25 pg/mL) had elevated (P < 0.001) estradiol compared with Positive Controls (3.4 ± 0.26 pg/mL) or Negative Controls (4.3 ± 0.25 pg/mL). On d19, pregnancy rates did not differ (P = 0.14) among treatments. On d24, Positive Controls (47%) had greater (P < 0.01) pregnancy rates than Negative Controls (32%); Estradiol cows were intermediate (40%). There was no difference (P = 0.38) in pregnancy rates between Positive Control (41%) and Estradiol (36%) cows on d30, but Negative Control (27%) cows had (P = 0.01) or tended (P = 0.08) to have decreased pregnancy rates, respectively. Thus, preovulatory estradiol may elicit an effect on early uterine attachment or alter histotroph components, consequently improving pregnancy maintenance through d30.
Collapse
Affiliation(s)
- J N Ketchum
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; Texas A&M AgriLife Research, Overton, TX 75684, USA
| | - G A Perry
- Texas A&M AgriLife Research, Overton, TX 75684, USA
| | - L K Quail
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; Texas A&M AgriLife Research, Overton, TX 75684, USA
| | - K M Epperson
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; Texas A&M AgriLife Research, Overton, TX 75684, USA; Northwest Missouri State University, Maryville, MO 64468, USA
| | - M A Ogg
- Department of Animal and Range Sciences, Montana State University, Bozeman, MT 59717, USA
| | - A L Zezeski
- USDA-ARS, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT 59301, USA
| | - J J J Rich
- College of Agriculture, Arkansas State University, Jonesboro, AR 72467, USA
| | - S Menegatti Zoca
- Department of Animal Science, University of Tennessee, Knoxville 37996, USA; Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - A C Kline
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - T N Andrews
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - M S Ortega
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; Animal&Dairy Science, University of Wisconsin Madison, Madison, WI 53706, USA
| | - M F Smith
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
| | - T W Geary
- USDA-ARS, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT 59301, USA.
| |
Collapse
|
6
|
Xu Q, Wang C, Wang L, Feng R, Guo Y, Feng S, Zhang L, Zheng Z, Su G, Fan L, Bian C, Zhang L, Su X. Correlation analysis of serum reproductive hormones and metabolites during multiple ovulation in sheep. BMC Vet Res 2022; 18:290. [PMID: 35883090 PMCID: PMC9317590 DOI: 10.1186/s12917-022-03387-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The establishment of non-invasive diagnostic method for multiple ovulation prediction is helpful to improve the efficiency of multiple ovulation. The blood hormones and metabolites would be suitable indexes for this subject. METHODS In this study, 86 estrus ewes (65 of induced estrus (IE) and 21 of spontaneous estrus (SE)) were selected and the blood samples were collected at the day before follicle-stimulating hormone (FSH) injection (1st) and before artificial insemination (2nd). The serum reproductive hormones ofFSH, luteinizing hormone (LH), 17β-Estradiol (E2), progesterone (P4) and anti-Mullerian hormone (AMH) were measured through enzyme linked immunosorbent assay (ELISA) and the untargeted metabolomics analysis was processed through LC-MS/MS. The embryos were collected after 6.5 days of artificial insemination. RESULTS In total, 975 and 406 embryos were collected in IE and SE group, respectively. The analysis of reproductive hormones showed that concentrations of FSH, E2 and AMH were positive correlated with the embryo yield while concentrations of LH and P4 were negative correlated in both group at 1st detection. At 2nd detection, the trends of reproductive hormones were similar with 1st except P4, which was positive correlated with embryo yield. The metabolomics analysis showed that 1158 metabolites (721 in positive iron mode and 437 in negative iron mode) were detected and 617 were annotated. In 1st comparation of high and low embryonic yield populations, 56 and 53 differential metabolites were identified in IE and SE group, respectively. The phosphatidyl choline (PC) (19:0/20:5) and PC (18:2/18:3) were shared in two groups. In 2nd comparation, 48 and 49 differential metabolites were identified in IE and SE group, respectively. The PC (18:1/18:2) and pentadecanoic acid were shared. Most differential metabolites were significantly enriched in amino acid, fatty acid metabolism, digestive system secretion and ovarian steroidogenesis pathways. CONCLUSIONS This study showed that FSH, P4, AMH, the PC relevant metabolites and some anomic acids could be potential biomarkers for embryonic yield prediction in ovine multiple ovulation. The results would help to explain the relation between blood material and ovarian function and provide a theoretical basis for the multiple ovulation prediction.
Collapse
Affiliation(s)
- Quanzhong Xu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Chunwei Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Lequn Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Rui Feng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Yulin Guo
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Shuang Feng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Liguo Zhang
- Ulanqab Agriculture and Animal Husbandry Bureau, Ulanqab Animal Husbandry Workstation, Ulanqab, Inner Mongolia Autonomous Region, 012000, People's Republic of China
| | - Zhong Zheng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Guanghua Su
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Lifen Fan
- Department of Orthopedics, Ordos Central Hospital, Ordos, Inner Mongolia Autonomous Region, 017000, People's Republic of China
| | - Chao Bian
- Tumor Radiotherapy Department, Inner Mongolia People's Hospital, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Li Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China
| | - Xiaohu Su
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China. .,School of Life Sciences, Inner Mongolia University, No.49, Xilinguolenan Road, Hohhot, Inner Mongolia Autonomous Region, 010017, People's Republic of China.
| |
Collapse
|
7
|
Read CC, Edwards JL, Schrick FN, Rhinehart JD, Payton RR, Campagna SR, Castro HF, Klabnik JL, Moorey SE. Preovulatory serum estradiol concentration is positively associated with oocyte ATP and follicular fluid metabolite abundance in lactating beef cattle. J Anim Sci 2022; 100:6620784. [PMID: 35772749 PMCID: PMC9246671 DOI: 10.1093/jas/skac136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/08/2022] [Indexed: 12/13/2022] Open
Abstract
Cattle induced to ovulate a small, physiologically immature preovulatory follicle had reduced oocyte developmental competence that resulted in decreased embryo cleavage and day 7 embryo quality compared with animals induced to ovulate a more advanced follicle. RNA-sequencing was performed on oocytes and their corresponding cumulus cells approximately 23 h after gonadotropin-releasing hormone (GnRH) administration to induce the preovulatory gonadotropin surge suggested reduced capacity for glucose metabolism and oxidative phosphorylation in the cumulus cells and oocytes from follicles ≤11.7 mm, respectively. We hypothesized that induced ovulation of a small, physiologically immature preovulatory follicle results in a suboptimal follicular microenvironment and reduced oocyte metabolic capacity. We performed a study with the objective to determine the impact of preovulatory follicle diameter and serum estradiol concentration at GnRH administration on oocyte metabolic competence and follicular fluid metabolome profiles. We synchronized the development of a preovulatory follicle and collected the follicle contents via transvaginal aspiration approximately 19 h after GnRH administration in lactating beef cows (n = 319). We determined ATP levels and mitochondrial DNA (mtDNA) copy number in 110 oocytes and performed ultra-high-performance liquid chromatography–high resolution mass spectrometry metabolomic studies on 45 follicular fluid samples. Intraoocyte ATP and the amount of ATP produced per mtDNA copy number were associated with serum estradiol concentration at GnRH and time from GnRH administration to follicle aspiration (P < 0.05). mtDNA copy number was not related to follicle diameter at GnRH, serum estradiol concentration at GnRH, or any potential covariates (P > 0.10). We detected 90 metabolites in the aspirated follicular fluid. We identified 22 metabolites associated with serum estradiol concentration at GnRH and 63 metabolites associated with follicular fluid progesterone concentration at the time of follicle aspiration (FDR < 0.10). Pathway enrichment analysis of significant metabolites suggested altered proteinogenesis, citric acid cycle, and pyrimidine metabolism in follicles of reduced estrogenic capacity pre-gonadotropin surge or reduced progesterone production by the time of follicle aspiration.
Collapse
Affiliation(s)
- Casey C Read
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - J Lannett Edwards
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - F Neal Schrick
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Justin D Rhinehart
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Rebecca R Payton
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Shawn R Campagna
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Hector F Castro
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Jessica L Klabnik
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Sarah E Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| |
Collapse
|
8
|
Moorey SE, Hessock EA, Edwards JL. Preovulatory follicle contributions to oocyte competence in cattle: importance of the ever-evolving intrafollicular environment leading up to the luteinizing hormone surge. J Anim Sci 2022; 100:6620792. [PMID: 35772757 DOI: 10.1093/jas/skac153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/25/2022] [Indexed: 12/13/2022] Open
Abstract
The preovulatory intrafollicular environment plays a major role in determining oocyte competence. The basis of this review is to highlight the importance of the preovulatory follicle's physiological status prior to the preovulatory luteinizing hormone (LH) surge and onset of oocyte maturation to promote an optimal follicular microenvironment and optimal oocyte developmental competence in cattle. While the underlying mechanisms remain unclear, and are likely multifactorial, the preovulatory follicle's physiological status prior to the preovulatory LH surge is highly influential on the oocyte's capacity to undergo postfertilization embryo development. Changes in the intrafollicular environment of the preovulatory follicle including steroid hormone production, metabolome profiles, and proteome profiles likely support the oocyte's developmental and metabolic competency. This review focuses on the relationship between bovine oocyte developmental competency and antral follicle progression to the preovulatory phase, the role of the preovulatory follicle in improving oocyte developmental competence in cattle, and the importance of the ever-evolving preovulatory intrafollicular environment for optimal fertility.
Collapse
Affiliation(s)
- Sarah E Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Emma A Hessock
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - J Lannett Edwards
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| |
Collapse
|
9
|
Pereira M, Cappellozza B, Costa W, Barbosa L, Cerri R, Vasconcelos J. Effects of estradiol cypionate dose as an ovulatory stimulus on reproductive performance of lactating dairy cows during the summer season. Theriogenology 2022; 182:110-118. [DOI: 10.1016/j.theriogenology.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/02/2022] [Accepted: 02/01/2022] [Indexed: 11/28/2022]
|
10
|
Núñez-Olivera R, Bó GA, Menchaca A. Association between length of proestrus, follicular size, estrus behavior, and pregnancy rate in beef heifers subjected to fixed-time artificial insemination. Theriogenology 2021; 181:1-7. [PMID: 34998022 DOI: 10.1016/j.theriogenology.2021.12.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 12/22/2021] [Accepted: 12/25/2021] [Indexed: 11/25/2022]
Abstract
This study evaluated the relationship between proestrus length and follicular size, estrous behavior, and pregnancy rate in Bos taurus beef heifers subjected to fixed-time artificial insemination (FTAI). A total of 911 heifers received a synchronization treatment protocol for FTAI (J-Synch) consisting of an intravaginal progesterone device for 6 d, estradiol benzoate at the time of device insertion cloprostenol sodium and eCG at device removal and GnRH at the time of FTAI. The presence or absence of a corpus luteum (CL) was determined by ultrasonography at device insertion and all heifers were tail painted at device removal for estrus detection at the time of FTAI. For the establishment of different periods of proestrus length (i.e., interval from device removal to FTAI), GnRH was administered i.m. at 48 h (n = 308), 60 h (n = 290) or 72 h (n = 313) after device removal. The diameter of the largest follicle at the time of GnRH administration was determined by ultrasonography, expression of estrous was determined by percentage of tail paint removal, and FTAI was performed at the time of GnRH administration in all heifers. The diameter of the largest follicle was greater when GnRH/FTAI was performed at 72 or 60 h (12.9 ± 0.2 mm and 12.8 ± 0.1 mm, respectively) than at 48 h (12.2 ± 0.1 mm, P < 0.05). The proportion of heifers in estrus tended to be greater when GnRH/FTAI was performed at 72 h (77.0%, 137/178) than at 48 h (68.2%, 122/179; P = 0.06), and intermediate at 60 h (71.4%, 120/168). Pregnancy rate tended to be greater in heifers with the longest (72 h: 70.0%, 219/313) than the shortest (48 h: 63.6%, 196/308; P < 0.1) proestrus length, while 60 h proestrus length was intermediate (63.1%, 183/290; P= NS). Pregnancy rate was affected by the presence of a CL at device insertion (71.3%, 352/494 in heifers with a CL, vs. 59.0%, 246/417 for those without a CL; P < 0.01). For those heifers bearing a CL, pregnancy rate was greater in heifers with a 72 h proestrus length (77.0%, 134/174) than with 48 or 60 h proestrus length (67.7%, 107/158 and 68.5%, 111/162; respectively; P < 0.05). In heifers without a CL, proestrus length did not affect pregnancy rate. In summary, extending proestrus length by delaying the interval from device removal to GnRH/FTAI from 48 to 72 h, was associated with a greater diameter of the preovulatory follicle, greater proportion of heifers expressing estrus at the time of FTAI, and greater pregnancy rate in cycling beef heifers.
Collapse
Affiliation(s)
- R Núñez-Olivera
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; Programa de Posgrado de la Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - G A Bó
- Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina
| | - A Menchaca
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; Instituto Nacional de Investigación Agropecuaria, Montevideo, Uruguay.
| |
Collapse
|
11
|
Correlation between Pre-Ovulatory Follicle Diameter and Follicular Fluid Metabolome Profiles in Lactating Beef Cows. Metabolites 2021; 11:metabo11090623. [PMID: 34564438 PMCID: PMC8471867 DOI: 10.3390/metabo11090623] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 01/01/2023] Open
Abstract
Induced ovulation of small pre-ovulatory follicles reduced pregnancy rates, embryo survival, day seven embryo quality, and successful embryo cleavage in beef cows undergoing fixed-time artificial insemination. RNA-sequencing of oocytes and associated cumulus cells collected from pre-ovulatory follicles 23 h after gonadotropin-releasing hormone (GnRH) administration to induce the pre-ovulatory gonadotropin surge suggested reduced capacity for glucose metabolism in cumulus cells of follicles ≤11.7 mm. We hypothesized that the follicular fluid metabolome influences metabolic capacity of the cumulus-oocyte complex and contributes to reduced embryo cleavage and quality grade observed following induced ovulation of small follicles. Therefore, we performed a study to determine the correlation between pre-ovulatory follicle diameter and follicular fluid metabolome profiles in lactating beef cows (Angus, n = 130). We synchronized the development of a pre-ovulatory follicle and collected the follicular contents approximately 20 h after GnRH administration. We then performed ultra-high performance liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS) metabolomic studies on 43 follicular fluid samples and identified 38 metabolites within pre-ovulatory follicles of increasing size. We detected 18 metabolites with a significant, positive correlation to follicle diameter. Individual and pathway enrichment analysis of significantly correlated metabolites suggest that altered glucose and amino acid metabolism likely contribute to reduced developmental competence of oocytes when small pre-ovulatory follicles undergo induced ovulation.
Collapse
|
12
|
Moorey SE, Monnig JM, Smith MF, Ortega MS, Green JA, Pohler KG, Bridges GA, Behura SK, Geary TW. Differential Transcript Profiles in Cumulus-Oocyte Complexes Originating from Pre-Ovulatory Follicles of Varied Physiological Maturity in Beef Cows. Genes (Basel) 2021; 12:genes12060893. [PMID: 34200628 PMCID: PMC8227736 DOI: 10.3390/genes12060893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 12/13/2022] Open
Abstract
Small dominant follicle diameter at induced ovulation, but not at spontaneous ovulation, decreased pregnancy rate, fertilization rate, and day seven embryo quality in beef cows. We hypothesized that the physiological status of the follicle at GnRH-induced ovulation has a direct effect on the transcriptome of the Cumulus-Oocyte complex, thereby affecting oocyte competence and subsequent embryo development. The objective of this study was to determine if the transcriptome of oocytes and associated cumulus cells (CC) differed among small (≤11.7 mm) and large follicles (≥12.7 mm) exposed to a GnRH-induced gonadotropin surge and follicles (11.7–14.0 mm) exposed to an endogenous gonadotropin surge (spontaneous follicles). RNA sequencing data, from pools of four oocytes or their corresponding CC, revealed 69, 94, and 83 differentially expressed gene transcripts (DEG) among oocyte pools from small versus large, small versus spontaneous, and large versus spontaneous follicle classifications, respectively. An additional 128, 98, and 80 DEG were identified among small versus large, small versus spontaneous, and large versus spontaneous follicle CC pools, respectively. The biological pathway “oxidative phosphorylation” was significantly enriched with DEG from small versus spontaneous follicle oocyte pools (FDR < 0.01); whereas the glycolytic pathway was significantly enriched with DEG from CC pools obtained from large versus small follicles (FDR < 0.01). These findings collectively suggest that altered carbohydrate metabolism within the Cumulus-Oocyte complex likely contributes to the decreased competency of oocytes from small pre-ovulatory follicles exposed to an exogenous GnRH-induced gonadotropin surge.
Collapse
Affiliation(s)
- Sarah E. Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
- Correspondence:
| | - Jenna M. Monnig
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Michael F. Smith
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - M. Sofia Ortega
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Jonathan A. Green
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Ky G. Pohler
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA;
| | - G. Alan Bridges
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA;
| | - Susanta K. Behura
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Thomas W. Geary
- USDA-ARS Fort Keogh Livestock and Range Research Lab, Miles City, MT 59301, USA;
| |
Collapse
|