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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
23/03/2005 |
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Data da última atualização: |
23/03/2005 |
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Autoria: |
HILL, J. R.; THOMPSON, J. A.; PERKINS, N. R. |
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Título: |
Factors affecting pregnancy rates following laparoscopic insemination of 28,447 merino under commercial conditions: a survey. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Theriogenology, v. 49, n. 4, p. 694-709, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
The results of laparoscopic insemination of 28,447 Australian Merino ewes with semen from 468 rams were used to study factors influencing pregnancy. The overall pregnancy rate was 71.7% (20,423/28,447). Pregnancy rates varied with type of progestagen implant, type and dosage of PMSG, fresh or frozen semen, wool type and number of ewes inseminated per hour. The pregnancy rate (64.6%) obtained with Medroxy-progesterone acetate (MAP) sponges was significantly (P < 0.01) lower than with Fluorogestone acetate 30 mg (FGA 30; 74.7%) sponges, Fluorogestone acetate 40 mg (FGA 40; 72.1 %) sponges, and Controlled Internal Drug Release (CIDR-G ; 71.7%) implants. A PMSG dose of 200 UI resulted in significant1y (P < 0.05) lower pregnancy rates (62.4%) compared with 250 lU (72.9%),300 lU (79.1 %) and ³375 IU (69.4%). The mean pregnancy rate for ewes administered Folligon PMSG was 71.9%, which was significantly higher (P<0.001) than that of ewes treated with Pregnecol PMSG (65.8%). The use of Pregnecol PMSG and MAP sponges was associated, and thus their conditional effects could not be calculated. Ewes inseminated with fresh semen were significantly (P < 0.001) more likely to become pregnant (82.2%) than those inseminated with semen frozen in pellets (69.5%) or straws (71.6%). Ewes inseminated during the months of March, April or May (falI, 71.5%) were just as likely to become pregnant as those ewes inseminated in November, December, January or February (69.6%). Significantly (P < 0.05) fewer strong wool ewes become pregnant to laparoscopic AI, (67.6%) than fine (71.7%), [me medium (73%) or medium wool ewes. Significantly (P < 0.0001) more pregnancies (77.6%) were achieved when more than 55 ewes were inseminated per hour compared with fewer than 35 ewes per hour (63.4%). MenosThe results of laparoscopic insemination of 28,447 Australian Merino ewes with semen from 468 rams were used to study factors influencing pregnancy. The overall pregnancy rate was 71.7% (20,423/28,447). Pregnancy rates varied with type of progestagen implant, type and dosage of PMSG, fresh or frozen semen, wool type and number of ewes inseminated per hour. The pregnancy rate (64.6%) obtained with Medroxy-progesterone acetate (MAP) sponges was significantly (P < 0.01) lower than with Fluorogestone acetate 30 mg (FGA 30; 74.7%) sponges, Fluorogestone acetate 40 mg (FGA 40; 72.1 %) sponges, and Controlled Internal Drug Release (CIDR-G ; 71.7%) implants. A PMSG dose of 200 UI resulted in significant1y (P < 0.05) lower pregnancy rates (62.4%) compared with 250 lU (72.9%),300 lU (79.1 %) and ³375 IU (69.4%). The mean pregnancy rate for ewes administered Folligon PMSG was 71.9%, which was significantly higher (P<0.001) than that of ewes treated with Pregnecol PMSG (65.8%). The use of Pregnecol PMSG and MAP sponges was associated, and thus their conditional effects could not be calculated. Ewes inseminated with fresh semen were significantly (P < 0.001) more likely to become pregnant (82.2%) than those inseminated with semen frozen in pellets (69.5%) or straws (71.6%). Ewes inseminated during the months of March, April or May (falI, 71.5%) were just as likely to become pregnant as those ewes inseminated in November, December, January or February (69.6%). Significantly (P < 0.05) fe... Mostrar Tudo |
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Palavras-Chave: |
Teste de prenhez. |
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Thesagro: |
Inseminação Artificial; Laparoscopia; Ovelha; Ovino; Reprodução Animal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02439naa a2200217 a 4500
001 1530990
005 2005-03-23
008 1998 bl uuuu u00u1 u #d
100 1 $aHILL, J. R.
245 $aFactors affecting pregnancy rates following laparoscopic insemination of 28,447 merino under commercial conditions$ba survey.
260 $c1998
520 $aThe results of laparoscopic insemination of 28,447 Australian Merino ewes with semen from 468 rams were used to study factors influencing pregnancy. The overall pregnancy rate was 71.7% (20,423/28,447). Pregnancy rates varied with type of progestagen implant, type and dosage of PMSG, fresh or frozen semen, wool type and number of ewes inseminated per hour. The pregnancy rate (64.6%) obtained with Medroxy-progesterone acetate (MAP) sponges was significantly (P < 0.01) lower than with Fluorogestone acetate 30 mg (FGA 30; 74.7%) sponges, Fluorogestone acetate 40 mg (FGA 40; 72.1 %) sponges, and Controlled Internal Drug Release (CIDR-G ; 71.7%) implants. A PMSG dose of 200 UI resulted in significant1y (P < 0.05) lower pregnancy rates (62.4%) compared with 250 lU (72.9%),300 lU (79.1 %) and ³375 IU (69.4%). The mean pregnancy rate for ewes administered Folligon PMSG was 71.9%, which was significantly higher (P<0.001) than that of ewes treated with Pregnecol PMSG (65.8%). The use of Pregnecol PMSG and MAP sponges was associated, and thus their conditional effects could not be calculated. Ewes inseminated with fresh semen were significantly (P < 0.001) more likely to become pregnant (82.2%) than those inseminated with semen frozen in pellets (69.5%) or straws (71.6%). Ewes inseminated during the months of March, April or May (falI, 71.5%) were just as likely to become pregnant as those ewes inseminated in November, December, January or February (69.6%). Significantly (P < 0.05) fewer strong wool ewes become pregnant to laparoscopic AI, (67.6%) than fine (71.7%), [me medium (73%) or medium wool ewes. Significantly (P < 0.0001) more pregnancies (77.6%) were achieved when more than 55 ewes were inseminated per hour compared with fewer than 35 ewes per hour (63.4%).
650 $aInseminação Artificial
650 $aLaparoscopia
650 $aOvelha
650 $aOvino
650 $aReprodução Animal
653 $aTeste de prenhez
700 1 $aTHOMPSON, J. A.
700 1 $aPERKINS, N. R.
773 $tTheriogenology$gv. 49, n. 4, p. 694-709, 1998.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | ARROUAYS, D.; GRUNDY, M. G.; HARTEMINK, A. E.; HEMPEL, J. W.; HEUVELINK, G. B. M.; HONG, S. Y.; LAGACHERIE, P.; LELYK, G.; MCBRATNEY, A. B.; MCKENZIE, N. J.; MENDONCA-SANTOS, M. D. L.; MINASNY, B.; MONTANARELLA, L.; ODEH, I. O. A.; SANCHEZ, P. A.; THOMPSON, J. A.; ZHANG, G.-L. GlobalSoilMap: toward a fine-resolution global grid of soil properties. Advances in Agronomy, v. 125, p. 93-134, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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