Correlation between performance and ingestive behavior of heifers supplemented in grass

Hermógenes Almeida Santana Junior, Robério Rodrigues Silva, Gleidson Giordano Pinto de Carvalho, Fabiano Ferreira da Silva, Daniele Soares Barroso, Alyson Andrade Pinheiro, George Abreu Filho, Elizângela Oliveira Cardoso, Daniel Lucas Santos Dias, Geraldo Trindade Júnior

Abstract


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.


Keywords


Bit; Cattle; Gain; Grazing.



DOI: http://dx.doi.org/10.5433/1679-0359.2013v34n1p367

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional