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van Leeuwen JJJ, Martens MRTM, Jourquin J, Driancourt MA, Wagner A, Kemp B, Soede NM. Follicle size and reproductive hormone profiles during a post-weaning altrenogest treatment in primiparous sows. Reprod Fertil Dev 2015; 27:304-12. [PMID: 24192203 DOI: 10.1071/rd13149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 10/12/2013] [Indexed: 11/23/2022] Open
Abstract
This study investigated the endocrine background of follicle size changes during post-weaning altrenogest treatment. altrenogest-treated sows received a 20-mg dosage daily at 8.00 a.m. from Day -1 to Day 14 after weaning. On Day -1, only 3/13 altrenogest-treated sows showed LH pulses compared with 8/8 control sows (P=0.001). On Day 0, control sows showed a typical high frequency-low amplitude LH pattern, indicative for recruitment of oestrogenic follicles. In altrenogest-treated animals on Day 0, half of the sows showed high frequency-high amplitude pulses from 4-5h after weaning. In altrenogest-treated sows, average follicle size increased from 3.1±0.5 mm on Day 0 to 4.4±0.6mm on Day 5, then decreased to 3.7±0.5 mm on Day 7 and stabilised thereafter. FSH and oestradiol (E2) concentrations showed a distinct diurnal pattern; high at 7.00 a.m. and low at 3.00 p.m. E2 concentrations (7.00 a.m.) showed a 2.5-fold increase from Day -1 to Day 2, and subsequently a 2-fold decline to reach a plateau at Day 8. FSH concentrations reached maximum levels by Day 5 and slowly declined afterwards. In conclusion, once-daily administration of altrenogest starting one day before weaning delays the weaning-induced increase in LH pulses. Although FSH and follicle size increase until Day 5 after weaning, follicle E2 production already decreased from Day 2 after weaning. Post-weaning altrenogest treatment thus results in a follicular wave of follicles that lose oestrogenic competence at Day 2 after weaning, presumably related to the changed LH dynamics during altrenogest treatment.
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Affiliation(s)
- J J J van Leeuwen
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, PO Box 338, 6700AH,Wageningen, The Netherlands
| | - M R T M Martens
- MSD Animal Health, PO Box 50, 5830 AB, Boxmeer, The Netherlands
| | - J Jourquin
- Elanco Animal Health, Turnhoutseweg 30, B-2340 Beerse, Belgium
| | - M A Driancourt
- MSD Animal Health, R&D Pharmaceuticals, BP 67131, 49071 Beaucouze, France
| | - A Wagner
- University Hohenheim, Institut für Tierhaltung und Tierzüchtung, Fachgebiet Tierhaltung und Leistungsphysiologie, (470A), Garbenstr. 17, 70599 Stuttgart, Germany
| | - B Kemp
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, PO Box 338, 6700AH,Wageningen, The Netherlands
| | - N M Soede
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, PO Box 338, 6700AH,Wageningen, The Netherlands
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van Leeuwen JJJ, Verhoeven M, van der Heden-van Noort I, Kranenbarg S, Kemp B, Soede NM. Split-weaning before altrenogest synchronization of multiparous sows alters follicular development and reduces embryo survival. Reprod Domest Anim 2011; 47:530-6. [PMID: 21988454 DOI: 10.1111/j.1439-0531.2011.01913.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study used split-weaning (SW) to induce differences in follicle size at weaning and study its consequences for follicle development during and after post-weaning altrenogest feeding and for reproductive performance. Multiparous sows (n=47) were assigned to SW (n=23; litter size reduced to the six smallest piglets 3 days before weaning) or control (C; n=24; normal weaning). Altrenogest (20 mg/day) was fed to all 47 sows from Day -1 till Day 5 (complete weaning = Day 0). Follicle size on Day 1, 2 and 8 was smaller in C than in SW (p ≤ 0.05). Ovulation rate was similar, but C sows had higher embryo survival rate (ESR) than SW sows (83 ± 19 and 58 ± 31%, respectively; p=0.001). SW sows with low ESR (<63%; n=10) had a greater follicle size on days 3-6 than SW sows with high ESR (>63%; n=10; p ≤ 0.04). A decrease in follicle size between Day 5 and 6 of altrenogest feeding was associated with increased ESR in both treatments (p=0.002). Follicle pool analyses (assessment of all follicles >2 mm) revealed that on Day 3, sows with low ESR had a higher % of follicles >5 mm compared with sows with high ESR (30% vs 10%; p=0.04). Thus, sows in which follicle growth was less suppressed during altrenogest feeding had a lower ESR. These effects on follicle development and ESR were more pronounced in split-weaned sows.
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Affiliation(s)
- J J J van Leeuwen
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, the Netherlands
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van Leeuwen JJJ, Martens MRTM, Jourquin J, Driancourt MA, Kemp B, Soede NM. Effects of altrenogest treatments before and after weaning on follicular development, farrowing rate, and litter size in sows1. J Anim Sci 2011; 89:2397-406. [DOI: 10.2527/jas.2010-3752] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [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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van Leeuwen JJJ, Williams SI, Martens MRTM, Jourquin J, Driancourt MA, Kemp B, Soede NM. The effect of different postweaning altrenogest treatments of primiparous sows on follicular development, pregnancy rates, and litter sizes1. J Anim Sci 2011; 89:397-403. [DOI: 10.2527/jas.2010-3246] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [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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Bartolome JA, van Leeuwen JJJ, Thieme M, Sa'filho OG, Melendez P, Archbald LF, Thatcher WW. Synchronization and resynchronization of inseminations in lactating dairy cows with the CIDR insert and the Ovsynch protocol. Theriogenology 2009; 72:869-78. [PMID: 19646744 DOI: 10.1016/j.theriogenology.2009.06.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Revised: 06/01/2009] [Accepted: 06/05/2009] [Indexed: 10/20/2022]
Abstract
Pregnancy per artificial insemination (AI) was evaluated in dairy cows (Bos taurus) subjected to synchronization and resynchronization for timed AI (TAI). Cows (n=718) received prostaglandin F(2alpha) (PGF) on Days -38 and -24 (Days 39 and 53 postpartum), gonadotropin-releasing hormone (GnRH) on Day -10, PGF on Day -3, and GnRH and TAI on Day 0. Between Days -10 and -3, cows received a progesterone intravaginal insert (CIDR group) or no CIDR (Control group). Between Days 14 and 23, cows received a CIDR (Resynch CIDR group) or no CIDR (Resynch control group), GnRH on Day 23, with pregnancy diagnosis on Day 30. Cows in estrus (between Days 0 and 30) were re-inseminated at detected estrus (RIDE). Nonpregnant cows received PGF on Day 30 and GnRH and TAI on Day 33. Plasma progesterone was determined to be low or high on Days -24 and -10. Pregnancy rates were evaluated 30 and 55 d after AI. The CIDR insert included in the Presynch-Ovsynch protocol did not increase overall pregnancy per AI for first service (36.1% and 33.6% for CIDR; 34.1% and 28.8% for Control) but did decrease pregnancy loss (7.0% for CIDR and 15.6% for Control). The CIDR insert increased pregnancy per AI in cows with high progesterone at the time the CIDR insert was applied. Administration of a CIDR insert between Days 14 and 23 of the estrous cycle after first service did not increase overall pregnancy per AI to second service (24.7% and 22.7% for Resynch CIDR; 28.6% and 25.3% for Resynch control). For second service, RIDE cows had lower pregnancy rates in the Resynch CIDR group than in the Resynch control group. Cows with a CL (corpus luteum) at Day 30 had higher pregnancy rates in the Resynch CIDR group than those in the Resynch control group.
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Affiliation(s)
- J A Bartolome
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, La Pampa, Argentina.
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van Leeuwen JJJ, Williams S, Kemp B, Soede NM. Post-weaning altrenogest treatment in primiparous sows; the effect of duration and dosage on follicular development and consequences for early pregnancy. Soc Reprod Fertil Suppl 2009; 66:197-198. [PMID: 19848282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- J J J van Leeuwen
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.
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