Bioestimulação e desmame temporário, objetivando a dinâmica folicular, taxa de concepção e de prenhez em vacas Nelore submetidas à IATF

Almeida, Paola SenaSilva Filho, Manoel Lopes daLopes, Glauciny SoaresKunkel, DanielaMachado Júnior, Antônio Augusto NascimentoRocha, Homero Batista daBraga Aguiar, Hans Müller Vaz da SilvaSoares, Raynnã da Silva

We evaluated the biostimulation and temporary weaning aiming follicular dynamics, conception rateand pregnancy rate in Nellore cows. Are used two groups of 75 cows. NESD: control without biostimulation andcalf at foot and BEDT56: biostimulation and temporary weaning for 56 hours. The interval between thebeginning of the treatment and emergency surge in days was 3.37 ± 0.50 for NESD and 3,40 ± 0,27 for BEDT56.The gap between the implant removal and ovulation in time was 60,85 ± 3,10 (NESD) and 66,75 ± 1,35(BEDT56). The larger diameter of the ovulatory follicle of the new follicular wave, cows with a diameter >8,0mm, was 12,1 ± 1,0 mm in NESD and BEDT56 15,2 ± 0,7 mm. The conception rate and pregnancy 37,3%(28/75) in NESD and 69,3% (52/75) in BEDT56. The association of biostimulation and temporary weaningincreases follicular development, conception rate and pregnancy rate in Nellore cows.(AU)

1. efeito touro
2. ovarian dynamics
3. dinâmica ovariana
4. remoção de bezerro
5. calf removal
6. bull effect