Correlation between performance and ingestive behavior of heifers supplemented in grass Correla o entre desempenho e comportamento ingestivo de novilhas suplementadas a pasto

The objective of this study was to evaluate the correlation between the performance and ingestive behavior of crossbred heifers in grass. The experiment was conducted at Princesa do Mateiro farm, Ribeirao do Largo, Bahia. 20 heifers were used with blood level 5/8 Guzerá milk lineage and 3/8 Holstein, with an average of 18 months of age and body weight of 187 ± 13.1 kg. The experiment lasted 224 days and the animals raised in a stocking grazing Brachiaria brizantha cv. Marandú. There is a positive correlation between grazing time with weight gain (GMD) and average daily gain (GP). The rumination showed positive correlations with body weight (PC). Negative correlations were found between the time from other activities and feed conversion (CA). The time from other activities was positively correlated with the GP and GMD. There is a negative correlation between the total time spent eating and chewing total with the GMD and GP. The total chewing time was positively correlated with CA. Weight gain, average daily gain and feed conversion did not correlate significantly with discrete periods of ingestive behavior. The performance is not associated with ingestive behavior of crossbred heifers on pasture. So, to demystify, through this study, the relationship between feeding behavior and productive performance. The correlations with aspects of rumination demonstrate that it does not interfere with productive results of the animals. Objetivou-se, com este estudo, avaliar as correla es entre o desempenho e o comportamento ingestivo de novilhas mesti as a pasto. O experimento foi conduzido na fazenda Princesa do Mateiro, município de Ribeir o do Largo, Bahia. Foram utilizadas 20 novilhas com grau de sangue 5/8 Guzerá linhagem leiteira e 3/8 Holandesa, com média de 18 meses de idade e peso corporal médio de 187 ± 13,1 kg. O experimento teve dura o de 224 dias e os animais criados em lota o rotacionada de Brachiaria brizantha cv. Marandú. Verifica-se uma correla o positiva entre o tempo de pastejo com ganho de peso (GP) e ganho médio diário (GMD). O tempo de rumina o apresentou correla es positivas com o peso corporal (PC). Correla es negativas foram verificadas entre o tempo de outras atividades e convers o alimentar (CA). O tempo de outras atividades apresentou correla o positiva com o GP e GMD. Observa-se uma correla o negativamente entre o tempo de alimenta o total e mastiga o total com o GMD e GP. O tempo de mastiga o total apresentou correla o positiva com CA. O ganho de peso, ganho médio diário e convers o alimentar n o apresentaram correla es sig