Resumen

ROLL, V.F.B. et al. Effect of tubular feeder height on ingestive behavior of broiler. Arch. zootec. [online]. 2010, vol.59, n.225, pp.115-122. ISSN 1885-4494.

This paper aimed to study the effect of tubular feeder height on ingestive behavior of broiler. Eight hundred and eighty female broilers (Ross) were randomly allotted to 40 pens (replications) with 22 broilers each (11 birds/m²). Each experimental pen contained wood shavings, linear waterers and tubular feeders (18 kg capacity). Birds were subjected to two feeders height in two periods (28 to 35 days of age, feeder height (FH): superior edge 20 cm height; feeder low (FL): superior edge 11 cm height; 36 to 42 days of age, FH: superior edge 25 cm height; FL: superior edge 18 cm height). Scan sampling technique was used to study the general description of avian behavior, while micro cameras were simultaneously installed in 4 pens to study ingestive behavior (12 hours non-stop monitoring). In the preference test the broilers should individually or collectively choose between either a high or a low feeder, with both available at the same time inside the pen. A completely randomized design was used and t test was utilized to compare the treatment averages. Non-parametric statistic was employed when necessary. Results showed that broilers prefer to consume feed from low feeders. The use of low height feeders reduces the frequency of visits for eating and is inversely correlated to the time needed for eating, but it does not affect feed consumption.

Palabras clave : Motivation; Performance; Preference test.

        · resumen en Portugués     · texto en Portugués     · Portugués ( pdf )