Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment
Abstract
The objective was to determine the effects of Regumate® alone or Regumate®+eCG treatment on the synchronization of estrus and fertility in delayed puberty (n=30+30) and normal cyclic gilts (n=30+30). Gilts were fed daily a complete diet containing 20 mg/gilt Regumate® for 18 days. Twenty-four hours after the last feeding of Regumate®, all gilts received an i.m. injection of 1,000 IU eCG. Gilts were inseminated artificially (AI) 12 and 24 h after first detection of standing estrus. More normal cyclic gilts (84.6%) than delayed puberty gilts (66.7%) expressed estrus by d 4.8 after Regumate® alone treatment (p < 0.05). However, similar proportion of normal cyclic (90%) and delayed puberty gilts (93%) were in estrus by d 4.2 after Regumate® + eCG treatment (p > 0.05). These findings indicate that about 70% of delayed puberty gilts had established cyclic ovarian activity (i.e. sexually mature, cyclic gilts), while about 30% were truly delayed puberty gilts (sexually immature, prepuber...tal acyclic gilts), before progestagen treatment. AI of delayed puberty gilts resulted in 80 to 85.7% farrowing rate and 10.50 to 11.04 liveborn piglets per litter. Obtained results demonstrate that progestagen treatment may be an effective tool for increasing gilts' reproductive efficiency and reducing the number of gilts culled from the breeding herd due to prolonged preinsemination anestrus.
Keywords:
progestagen / eCG / fertility / prolonged anestrus / giltSource:
Slovenian Veterinary Research, 2013, 50, 3, 111-116Publisher:
- Univ Ljubljana, Veterinary Faculty, Ljubljana
Collections
Institution/Community
Fakultet veterinarske medicineTY - JOUR AU - Stančić, Ivan AU - Bošnjak, Darko AU - Radović, Ivan AU - Gvozdić, Dragan AU - Savić, Božidar AU - Stančić, Blagoje PY - 2013 UR - https://vet-erinar.vet.bg.ac.rs/handle/123456789/980 AB - The objective was to determine the effects of Regumate® alone or Regumate®+eCG treatment on the synchronization of estrus and fertility in delayed puberty (n=30+30) and normal cyclic gilts (n=30+30). Gilts were fed daily a complete diet containing 20 mg/gilt Regumate® for 18 days. Twenty-four hours after the last feeding of Regumate®, all gilts received an i.m. injection of 1,000 IU eCG. Gilts were inseminated artificially (AI) 12 and 24 h after first detection of standing estrus. More normal cyclic gilts (84.6%) than delayed puberty gilts (66.7%) expressed estrus by d 4.8 after Regumate® alone treatment (p < 0.05). However, similar proportion of normal cyclic (90%) and delayed puberty gilts (93%) were in estrus by d 4.2 after Regumate® + eCG treatment (p > 0.05). These findings indicate that about 70% of delayed puberty gilts had established cyclic ovarian activity (i.e. sexually mature, cyclic gilts), while about 30% were truly delayed puberty gilts (sexually immature, prepubertal acyclic gilts), before progestagen treatment. AI of delayed puberty gilts resulted in 80 to 85.7% farrowing rate and 10.50 to 11.04 liveborn piglets per litter. Obtained results demonstrate that progestagen treatment may be an effective tool for increasing gilts' reproductive efficiency and reducing the number of gilts culled from the breeding herd due to prolonged preinsemination anestrus. PB - Univ Ljubljana, Veterinary Faculty, Ljubljana T2 - Slovenian Veterinary Research T1 - Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment VL - 50 IS - 3 SP - 111 EP - 116 UR - https://hdl.handle.net/21.15107/rcub_veterinar_980 ER -
@article{ author = "Stančić, Ivan and Bošnjak, Darko and Radović, Ivan and Gvozdić, Dragan and Savić, Božidar and Stančić, Blagoje", year = "2013", abstract = "The objective was to determine the effects of Regumate® alone or Regumate®+eCG treatment on the synchronization of estrus and fertility in delayed puberty (n=30+30) and normal cyclic gilts (n=30+30). Gilts were fed daily a complete diet containing 20 mg/gilt Regumate® for 18 days. Twenty-four hours after the last feeding of Regumate®, all gilts received an i.m. injection of 1,000 IU eCG. Gilts were inseminated artificially (AI) 12 and 24 h after first detection of standing estrus. More normal cyclic gilts (84.6%) than delayed puberty gilts (66.7%) expressed estrus by d 4.8 after Regumate® alone treatment (p < 0.05). However, similar proportion of normal cyclic (90%) and delayed puberty gilts (93%) were in estrus by d 4.2 after Regumate® + eCG treatment (p > 0.05). These findings indicate that about 70% of delayed puberty gilts had established cyclic ovarian activity (i.e. sexually mature, cyclic gilts), while about 30% were truly delayed puberty gilts (sexually immature, prepubertal acyclic gilts), before progestagen treatment. AI of delayed puberty gilts resulted in 80 to 85.7% farrowing rate and 10.50 to 11.04 liveborn piglets per litter. Obtained results demonstrate that progestagen treatment may be an effective tool for increasing gilts' reproductive efficiency and reducing the number of gilts culled from the breeding herd due to prolonged preinsemination anestrus.", publisher = "Univ Ljubljana, Veterinary Faculty, Ljubljana", journal = "Slovenian Veterinary Research", title = "Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment", volume = "50", number = "3", pages = "111-116", url = "https://hdl.handle.net/21.15107/rcub_veterinar_980" }
Stančić, I., Bošnjak, D., Radović, I., Gvozdić, D., Savić, B.,& Stančić, B.. (2013). Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment. in Slovenian Veterinary Research Univ Ljubljana, Veterinary Faculty, Ljubljana., 50(3), 111-116. https://hdl.handle.net/21.15107/rcub_veterinar_980
Stančić I, Bošnjak D, Radović I, Gvozdić D, Savić B, Stančić B. Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment. in Slovenian Veterinary Research. 2013;50(3):111-116. https://hdl.handle.net/21.15107/rcub_veterinar_980 .
Stančić, Ivan, Bošnjak, Darko, Radović, Ivan, Gvozdić, Dragan, Savić, Božidar, Stančić, Blagoje, "Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment" in Slovenian Veterinary Research, 50, no. 3 (2013):111-116, https://hdl.handle.net/21.15107/rcub_veterinar_980 .