Pre-initial development of broilers fed diets containing broken rice
Keywords:
Alternative food, allometry, centesimal composition, animal nutritionAbstract
This work aimed to verify the influence of the levels of inclusion of broken rice in the pre-initial diet of broilers on body development. The experiment was carried out at the Animal Science Department of the Federal University of Pelotas, where 160 one-day-old male Cobb broiler chicks were housed and divided into four treatments (0, 20, 40 and 60% of broken rice) with 10 repetitions. At seven days, the heaviest birds in each box were selected for the assessment of allometry, being slaughtered and eviscerated manually. The following parameters were evaluated: body length, relative weights of the leg, chest, wing, heart, liver, and gizzard; the length of the chest, leg, digestive tract, and small intestine, and the width and depth of chest, as well as moisture, ether extract, ash, and body protein. The relative weight of the liver increased with the increase in the level of broken rice in the diet, while the body ash content decreased. The relative weight of gizzard showed a quadratic effect, decreasing to 20% and remaining constant afterwards. The broken rice is a quality ingredient and can be included in the pre-starter diet of broilers by up to 60%.
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