TY - JOUR
T1 - Digestibility, growth, blood chemistry, and enzyme activity of juvenile Oreochromis niloticus fed isocaloric diets containing animal and plant byproducts
AU - Montoya-Mejía, Magnolia
AU - García-Ulloa, Manuel
AU - Hernández-Llamas, Alfredo
AU - Nolasco-Soria, Hector
AU - Rodríguez-González, Hervey
N1 - Publisher Copyright:
© 2017 Sociedade Brasileira de Zootecnia.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - In this work, we studied the digestibility, growth, blood chemistry, and enzyme activity of Nile tilapia (Oreochromis niloticus) juveniles (0.95±0.18 g) using different animal (fish silage meal, whey meal, bovine blood meal, and red crab meal) and plant (extruded bean, extruded chickpea meal, coconut paste, Jatropha curcas meal, and chickpea meal) dietary byproducts. Nine isocaloric diets (321.92±9.10 kcal g-1) were evaluated for 60 days. The highest digestibility of crude protein values for animal and plant sources were obtained for the whey (93.6) and extruded bean meal (90.5) diets, respectively. The final body weight was higher for the red crab and extruded chickpea meal diets, meanwhile the fish silage and red crab byproducts obtained the highest protein efficiency ratio. Hematocrit was similar among the diets of each byproduct source and presented correlation with growth parameters. The highest glucose, cholesterol, and triglyceride values were obtained for fish silage (138.0, 260.5, and 389.0 mg dL-1, respectively) and whey meal (174.5, 242.3, and 284.0 mg dL-1, respectively) groups. A positive correlation was found between the digestibility of crude protein of ingredients and chymotrypsin activity. Oreochromis niloticus is able to better utilize fish silage, whey, extruded bean, and extruded chickpea byproducts, adjusting its digestive physiology. Such ingredients can be used for formulating cheaper and efficient tilapia diets.
AB - In this work, we studied the digestibility, growth, blood chemistry, and enzyme activity of Nile tilapia (Oreochromis niloticus) juveniles (0.95±0.18 g) using different animal (fish silage meal, whey meal, bovine blood meal, and red crab meal) and plant (extruded bean, extruded chickpea meal, coconut paste, Jatropha curcas meal, and chickpea meal) dietary byproducts. Nine isocaloric diets (321.92±9.10 kcal g-1) were evaluated for 60 days. The highest digestibility of crude protein values for animal and plant sources were obtained for the whey (93.6) and extruded bean meal (90.5) diets, respectively. The final body weight was higher for the red crab and extruded chickpea meal diets, meanwhile the fish silage and red crab byproducts obtained the highest protein efficiency ratio. Hematocrit was similar among the diets of each byproduct source and presented correlation with growth parameters. The highest glucose, cholesterol, and triglyceride values were obtained for fish silage (138.0, 260.5, and 389.0 mg dL-1, respectively) and whey meal (174.5, 242.3, and 284.0 mg dL-1, respectively) groups. A positive correlation was found between the digestibility of crude protein of ingredients and chymotrypsin activity. Oreochromis niloticus is able to better utilize fish silage, whey, extruded bean, and extruded chickpea byproducts, adjusting its digestive physiology. Such ingredients can be used for formulating cheaper and efficient tilapia diets.
KW - Alternative byproducts
KW - Digestive response
KW - Formulated diets
KW - Growth performance
KW - Nile tilapia
KW - Physiology
UR - http://www.scopus.com/inward/record.url?scp=85041008192&partnerID=8YFLogxK
U2 - 10.1590/S1806-92902017001200001
DO - 10.1590/S1806-92902017001200001
M3 - Artículo
SN - 1516-3598
VL - 46
SP - 873
EP - 882
JO - Revista Brasileira de Zootecnia
JF - Revista Brasileira de Zootecnia
IS - 12
ER -