Intervalo entre partos de Búfalas Murrah e Mestiças submetidas à monta natural e inseminação artificial no município de Taipu, Rio Grande do Norte / Interval between births of Buffaloes Murrah and Gostosas submitted to monta natural and artificial insemination in the municipality of Taipu, Rio Grande do Norte

ABSTRACT

This study aimed to avaluate the interval between calvins (IBC) from a buffalo herd, and to evaluate theinfluence of the blood level and the reproduction system in the IBC. Four hundred and one data were analyzedbetween 2000 and 2015 of buffalo females, Murrah breed, and dairy mixed breeds maintained in an intensivesystem and submitted to two daily milking. Statistical data were evaluated in the SAS software (2010), for theanalysis of the different experimental conditions, analysis of variance (ANOVA) and Tukey test with significancelevel of 5%. The mean value found for IBC was 425,9±66,1 days, the AFC mean value according to blood levelof Murrah breed and mixed breed was respectively 427,4 ± 65,5 and 418,4 ± 69,6, (P > 0,05). Consideringbreed systems artificial insemination and natural-service the IBC was 434,3 ± 55,6 and 424,1 ± 68,2respectively, (P > 0,05). Therefore, there was no influence of the blood level and breeding system on IBC.(AU)