Resumen

TERRAES, Juan Carlos, SINDIK, Martín, REVIDATTI, Fernando et al. Efectos de la composición de la dieta sobre la uniformidad al final del ciclo de pollos de engorde. Rev. investig. vet. Perú, jul./dic. 2011, vol.22, no.2, p.97-104. ISSN 1609-9117.

This paper describes the uniformity in broiler chickens, where the objective of the study was to evaluate two types of isocaloric diets with low and high protein level. A total of 195 broiler male chickens distributed in the two experimental groups were used. At the end of the production cycle (day 49), the uniformity for both diets were 68 ± 13% and 72 ± 12% respectively, and without statistical differences between groups throughout the production cycle or at the end of it. However, repeated measures analysis showed significant differences for uniformity, regardless of treatment (p<0.05), as there was a marked decrease in the variable of study towards the end of the first week (55%) as compared to the initial value of 90%. The results indicate that despite the differences in chemical composition of the tested rations, both treatments showed similar percentages of uniformity, and if considering the differences in costs due to the levels of protein in the rations, it can be concluded that the lack of statistical differences between diets provides an important finding when considering the cost benefit analysis of production.  

Palabras llave: poultry; nutrition; nutritional principles; energy/protein ratio.