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- W2397782273 abstract "Abstract The research, developed in a swine production system, examined theeffectivity of luteinizing hormone (LH) in ovulation induction. Twentyfour sows compose the control group and tirthy two sows receivedintramuscular aplication of 600 IU of eCG (Novormon 5000 ® ), 24 hafter weaning and 5 mg of LH (Lutropin - V ® ), 56 h after eCG injection(treated group). Oestrus were observed twice a day, the ovulationdetected by transcutaneous ultrasonography and ovulation rate (OR)determined by corpora lutea counting. The weaning-to-estrus interval(WEI) were reduced (P=0,01) by treatment (87,4 vs 98,5 h). Theovulations occured among 32 and 48 h (37,25 ± 3,65) after LH andwere diferent (P < 0,0001) of control (63,67 ± 20,22, range: 32 - 104 h).The OR of treatment was similar (P = 0,2) on the control (23,16 ±12,19 vs 20,08 ± 5,19, respectively). Key-words: LH.Synchronization.Ovulation.Gonadotrophins.Sows. Agradecimentos Agradecemos as empresas SADIAS.A. e TECNOPEC pelo apoio pararealizacao desse experimento e a FAPESPpor seu apoio financeiro.efetivas, a facilitacao nas programacoes dasgranjas, quanto a formacao de grupos defemeas e consequentes produtos, de formahomogenea, sem a variabilidade comum econstante encontrada na maioria das criacoes.Alem disso, o elevado grau desincronizacao das ovulacoes pode ajudar nosestudos cientificos sobre intervalo entreinseminacao e ovulacao, atraves da pre -determinacao do tamanho amostral dostratamentos, ja que, ate entao, pesquisastrabalharam com ovulacao espontânea, naosendo possivel a equalizacao dos grupos deacordo com o intervalo entre inseminacao eovulacao. Tornam-se interessantes, futurosestudos sobre IA em tempo fixo comreduzido numero de doses inseminantes, IAem tempo fixo com semen congelado, IAintra-uterina e sincronizacao paratransferencia de embrioes." @default.
- W2397782273 created "2016-06-24" @default.
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- W2397782273 date "2004-01-01" @default.
- W2397782273 modified "2023-09-24" @default.
- W2397782273 title "Avaliação do uso de Hormônio Luteinizante (LH) como indutor da ovulação em porcas Assessment of the Luteinizing Hormon (LH) use in ovulation induction in sows" @default.
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- W2397782273 hasPublicationYear "2004" @default.
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