Periódicos Brasileiros em Medicina Veterinária e Zootecnia

p. 217-222

The use of whole grain sorghum in broiler feeds

Fernandes, E APereira, W J SHackenhaar, LRodrigues, R MTerra, R

In broiler feed manufacturing, grinding may significantly increase costs due to electric energy use. This study evaluated the performance and the morphometrics of the gastrointestinal tract of broilers. According to a completely randomized experimental design, 2,400 birds (1,200 males and 1,200 females) were submitted to five treatments of eight replicates each. Treatments consisted of diets based corn or sorghum as follows: ground corn (A), broken corn (B), ground sorghum (C), ground (50%) and whole (50%) sorghum (D) and whole sorghum (100%; E). Pre-starter feeds (1 to 8 days), based on corn or sorghum, were produced only with ground grains. The study was divided in two trials: males and females. The results were submitted to analysis of variance (p 0.05) and Tukey's test. Feed intake, live weight, feed conversion ratio, and livability of 21- and 42-day-old male and female broilers were not affected by the treatments. This demonstrates that broiler performance is not influenced by sorghum physical form and that broilers fed sorghum-based diets presented similar performance as those fed corn-based diets. Gizzard and small intestine were heavier when whole sorghum grains was included in the diet. It was concluded that whole sorghum grains can be included in broiler feeds with not detrimental effects on performance.(AU)

Texto completo