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Pereira,Luiz Carlos; de Souza Ferreira,Renan; Fujii Gongalves,Rony; Vinhas Ítavo,Luís Carlos; Signor Kohl,Endyara; Menezes Dias,Alexandre; Barbosa Ferreira,Marcos; Espínala Carvalho,Cristiano Marcelo; Gongalves Mateus,Rodrigo. |
Abstract The present study evaluates the economic viability of puberty induction in nulliparous Bos taurus indicus Nellore breed heifers using an intravaginal device of fourth-use and melengestrol acetate (MGA®). The experiment was undertaken in the Nossa Senhora Aparecida Farm, Terenos city, Mato Grosso do Sul, Brazil, and was utilized a completely randomized experimental design in a 2 x 3 factorial scheme. Two age classes were included in the study, which were divided into 348 precocious (early-cycle) heifers, aging 16-18 months, weighting an average of 264.6 kg and 543 conventional-cycle heifers aging 24-26 months averaging 346.8 kg. The three treatments were as follows: control without the induction of follicle formation (treatment 1); treatment 2:... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estrus induction; Fertility; Reproductive efficiency; Economic return; Pregnancy rate. |
Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000300205 |
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