Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes

Recovery growth of C. quadricarinatus juveniles was evaluated during a daily feeding period that followed a cyclic feeding period, by the analysis of the biochemical composition and structure of the hepatopancreas, and the activity of digestive enzymes. Two different diets were evaluated: diet A (49...

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Autores principales: Stumpf, L., Tropea, C., López Greco, L.S.
Formato: JOUR
Materias:
Cherax quadricarinatus
Cyclic feeding
Daily feeding period
Digestive enzymes
High-protein diets
Recovery growth
artificial diet
biochemical composition
crayfish
crustacean culture
digestion
enzyme activity
feeding
growth rate
juvenile
physiological response
production cost
protein
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00448486_v433_n_p404_Stumpf
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00448486_v433_n_p404_Stumpf
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spelling todo:paper_00448486_v433_n_p404_Stumpf2023-10-03T14:51:53Z Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes Stumpf, L. Tropea, C. López Greco, L.S. Cherax quadricarinatus Cyclic feeding Daily feeding period Digestive enzymes High-protein diets Recovery growth artificial diet biochemical composition crayfish crustacean culture digestion enzyme activity feeding growth rate juvenile physiological response production cost protein Cherax quadricarinatus Recovery growth of C. quadricarinatus juveniles was evaluated during a daily feeding period that followed a cyclic feeding period, by the analysis of the biochemical composition and structure of the hepatopancreas, and the activity of digestive enzymes. Two different diets were evaluated: diet A (49% crude protein) and diet B (38% crude protein), and juveniles were subjected to one of the following feeding regimes for each diet: DF, under which they were daily fed throughout the experimental period (120. days); and 4F/4D, under which they were fed for 4. days followed by 4. days of food deprivation in repeated cycles from day 1 to day 45, and daily fed from day 45 to day 120. Juveniles under the 4F/4D regime showed compensatory growth and reached the same body mass of control juveniles ( i.e. complete catch-up growth) at the end of the experiment. This physiological response was not affected by the two high-protein diets tested, and it may be at least partly explained by an improved food conversion ratio, a similar ability to digest and absorb nutrients and an increased efficiency in protein digestion with respect to control juveniles. The 4F/4D regime had no negative effects on the nutritional state and health of red claw crayfish, which confirms the high tolerance of the species to food deprivation. The present results are important from an economical point of view since they show that it is possible to significantly reduce the amount of food offered in culture systems, and consequently reduce production costs, without affecting juvenile growth. © 2014 Elsevier B.V. Fil:Tropea, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00448486_v433_n_p404_Stumpf
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cherax quadricarinatus
Cyclic feeding
Daily feeding period
Digestive enzymes
High-protein diets
Recovery growth
artificial diet
biochemical composition
crayfish
crustacean culture
digestion
enzyme activity
feeding
growth rate
juvenile
physiological response
production cost
protein
Cherax quadricarinatus
spellingShingle Cherax quadricarinatus
Cyclic feeding
Daily feeding period
Digestive enzymes
High-protein diets
Recovery growth
artificial diet
biochemical composition
crayfish
crustacean culture
digestion
enzyme activity
feeding
growth rate
juvenile
physiological response
production cost
protein
Cherax quadricarinatus
Stumpf, L.
Tropea, C.
López Greco, L.S.
Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
topic_facet Cherax quadricarinatus
Cyclic feeding
Daily feeding period
Digestive enzymes
High-protein diets
Recovery growth
artificial diet
biochemical composition
crayfish
crustacean culture
digestion
enzyme activity
feeding
growth rate
juvenile
physiological response
production cost
protein
Cherax quadricarinatus
description Recovery growth of C. quadricarinatus juveniles was evaluated during a daily feeding period that followed a cyclic feeding period, by the analysis of the biochemical composition and structure of the hepatopancreas, and the activity of digestive enzymes. Two different diets were evaluated: diet A (49% crude protein) and diet B (38% crude protein), and juveniles were subjected to one of the following feeding regimes for each diet: DF, under which they were daily fed throughout the experimental period (120. days); and 4F/4D, under which they were fed for 4. days followed by 4. days of food deprivation in repeated cycles from day 1 to day 45, and daily fed from day 45 to day 120. Juveniles under the 4F/4D regime showed compensatory growth and reached the same body mass of control juveniles ( i.e. complete catch-up growth) at the end of the experiment. This physiological response was not affected by the two high-protein diets tested, and it may be at least partly explained by an improved food conversion ratio, a similar ability to digest and absorb nutrients and an increased efficiency in protein digestion with respect to control juveniles. The 4F/4D regime had no negative effects on the nutritional state and health of red claw crayfish, which confirms the high tolerance of the species to food deprivation. The present results are important from an economical point of view since they show that it is possible to significantly reduce the amount of food offered in culture systems, and consequently reduce production costs, without affecting juvenile growth. © 2014 Elsevier B.V.
format JOUR
author Stumpf, L.
Tropea, C.
López Greco, L.S.
author_facet Stumpf, L.
Tropea, C.
López Greco, L.S.
author_sort Stumpf, L.
title Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
title_short Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
title_full Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
title_fullStr Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
title_full_unstemmed Recovery growth of Cherax quadricarinatus juveniles fed on two high-protein diets: Effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
title_sort recovery growth of cherax quadricarinatus juveniles fed on two high-protein diets: effect of daily feeding following a cyclic feeding period on growth, biochemical composition and activity of digestive enzymes
url http://hdl.handle.net/20.500.12110/paper_00448486_v433_n_p404_Stumpf
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