Desempenho produtivo e reprodutivo de fêmeas F1 Holandês x Zebu filhas de touro provado

Abstract

A total of 253 F1 cows from the private farm records were used in Santo Antônio do Monte, MG. The following were evaluated: total milk production (PLT), milk production adjusted for 280 days (PLT 280), the average daily production (PMD), production per delivery interval (PLIEp), lactation duration PS), interval between deliveries (PID), duration of gestation (GD) and the effects of year of calving, calving season and calving order. The variables were submitted to statistical analysis and the significant effects were compared using the Duncan test at 5.0% probability. The F1 animals efficiently expressed their genetic potential for milk production with a mean of 7481.17 kg, PLT280 days 6989.43 kg and average daily production of 24.42 kg. DL was 321.78 days, PLIEp 18.30 kg, PS 126.16 days, IDP 430.95 days and DG 276 days. The daughters of the bull with higher PTA milk value (5590,1237kg) was higher in milk production in relation to the other PTA milk studied. There were no significant reproductive losses to the herd due to high productivity value (5590.1237kg) were higher in milk production in relation to the other PTA milk studied.