TY  - JOUR
T1  - Effect of Dietary Protein Level on Growth Performance and Nitrogen Excretion 
  of the Juvenile Convict Cichlid, <I>Amatitlania nigrofasciata</I>
AU - Gultepe, Nejdet AU - Acar, Umit AU - Kesbic, OsmanSabri AU - Gokkus, Kutalmis AU - Aydin, Seyit 
JO  - Journal of Animal and Veterinary Advances
VL  - 13
IS  - 6
SP  - 390
EP  - 394
PY  - 2014
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2014.390.394
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2014.390.394
KW  - Growth
KW  -protein requirements
KW  -Amatitlania nigrofasciata
KW  -ornamental fish
KW  -ammonia excretion
AB  - A 8 weeks growth trial was conducted to determine the effects of dietary protein on the growth of the convict cichlid <I>Amatitlania nigrofasciata</I> and on water quality in closed recirculating systems. Four test diets were formulated to contain protein levels ranging 30-45%. The fish averaging 0.47&plusmn;0.07 g were reared in 10 L aquarium. Fish were fed <I>ad libitum</I> at 08:30, 12:30 and 16:30 for 8 weeks. A second-order polynomial regression between dietary protein levels and weight gain in each group, demonstrated that the most suitable protein level for maximum growth was determined to be 40.8%. The feed conversion ratios of fish ranged from 1.78-2.78 in the experimental groups. Results showed significant differences in SGR and WG. Dietary protein level significantly influenced ammonia excretion, fish fed 45% protein excreted higher concentrations of ammonia-nitrogen than fish fed 30-40% dietary protein. For optimum growth, feed conversion and ammonia excretion, a diet containing 40.8% protein, 12% lipid and 20.8 kJ gross energy/kg diet is recommended for juvenile convict cichlids, <I>A. nigrofasciata</I>.
ER  -