Protein-sparing effect with high energy levels and obtaining the optimum digestible energy/digestible protein ratio in growth diets to Oreochromis niloticus(L.)

Revista Peruana de Biología

Felix Walter Gutierrez¹  Luz Valenzuela²  Máximo Quispe² 

[1] Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos. Lima, Perú.Direcciónparacorrespondencia:10642MallardDR. Garden Grove, CA 92843, USA.;Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos. Lima, Perú.;

关键词: proteína;    energía digestible;    requerimientos nutricionales;    Oreochromis;   

DOI  :  10.15381/rpb.v20i3.5229

来源: DOAJ

【 摘 要 】

The sparing effect of the dietary protein using diets with high energy levels was evaluated. Afactorial design was used to examine the interaction of two levels of protein (30 and 35%) andtwo levels of digestible energy (3.3 and 3.7 kcal/g) on the weight gain (WG), food conversionFC), retained protein (PR), retained energy (ER) and protein efficiency ratio (PER) in “sexreversal Nile tilapia” (Oreochromis niloticus). Diets contained anchovy and soybean meal asprotein sources and yellow corn and wheat bran as energy sources. The fish oil was usedto adjust the energy levels. There were highly significant interactions (P<0.01) between theexperimental diets. In diets with 30% proteins, the increase of digestible energy significantlyenhances WG, FC, PR, ER and PER, where the level of 3.7 kcal/g had the best performance.With 35% protein, the increase of digestible energy had not significant influence on the GP,CA, PR, ER and PER, however the growth of sex reversal Nile Tilapia was improved withthe level of 3.3 kcal/g. When were compared both diets, were not find significant differences.Considering the protein cost, it can be concluded that best response was obtained with a dietcontaining 30 % of protein and 3.7 kcal/g of digestible energy and optimum digestible energy/ digestible protein ratio of 13.75 kcal/g protein.

【 授权许可】

Unknown