2013
DOI: 10.1590/s0102-09352013000400015
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Inseminação artificial em tempo fixo em primíparas Nelore lactantes acíclicas

Abstract: G3, 42.2% and G4, 51.7% were pregnant (P <0.05) than in G1, 0% and G2, 3.5%. The CL percentage was 6.6%, 28.1%, 50.9%, 62.9% in G1, G2, G3 and G4, respectively. At 210 days 22.9% in G1, 45.6% in G2, 40.5% in G3 and 65.5% in G4 were pregnant. The service periods were: G1, 134.00±11.70 days; G2, 119.65±8.27 days, in G3, 79.91±5.38 days, and G4, 81.40±4.59

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Cited by 4 publications
(3 citation statements)
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References 11 publications
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“…Primiparous cows are the most metabolically challenged among the Nelore matrixes, especially when raised in a pasture system and receiving only mineral supplementation. In most cases, this challenge is related to the need for primiparous females to have sufficient nutrients for growth and lactation (Cunha, Fernandes, Garcia, & Gioso, 2013). Under favorable conditions, the primiparous females will make nutrients available for a new pregnancy, thereby demonstrating a lower response in the overall reproductive performance (Oliveira, Bonato, & Santos, 2011).…”
Section: Resultsmentioning
confidence: 99%
“…Primiparous cows are the most metabolically challenged among the Nelore matrixes, especially when raised in a pasture system and receiving only mineral supplementation. In most cases, this challenge is related to the need for primiparous females to have sufficient nutrients for growth and lactation (Cunha, Fernandes, Garcia, & Gioso, 2013). Under favorable conditions, the primiparous females will make nutrients available for a new pregnancy, thereby demonstrating a lower response in the overall reproductive performance (Oliveira, Bonato, & Santos, 2011).…”
Section: Resultsmentioning
confidence: 99%
“…Segundo Godoi et al (2010), mesmo sendo detentor do maior rebanho de gado de corte comercial do mundo, o Brasil ainda apresenta produção e reprodução com baixos índices zootécnicos. Cunha (2011) XXVI, v. 23, n. 45, 2 . Sem.…”
Section: Aplicações Da Iatf Em Gado De Corteunclassified
“…Inforzato et al (2008) concordam com os autores acima citados quando dizem que, independente do sistema de criação, vacas de corte têm sérios problemas em relação à eficiência reprodutiva, e que esse é um dos principais fatores de influência no sucesso econômico da atividade. Nesse cenário, a utilização das biotécnicas da reprodução, como a IATF, promove melhoras na produtividade do rebanho nacional, e consequente aumento na possibilidade de se atingir as demandas impostas pelo mercado (CUNHA, 2011).…”
Section: Aplicações Da Iatf Em Gado De Corteunclassified