Voluntary feed intake and energy partitioning in Tilapia (Oreochromis niloticus) fed diets with different protein/energy levels

C.B. Santiago; U. Focken; K. Becker

Voluntary feed intake and energy partitioning in Tilapia (Oreochromis niloticus) fed diets with different protein/energy levels

In: Energy metabolism in animals

Authors:

C.B. Santiago

C.B. Santiago Binangonan Freshwater Station, SEAFDEC Aquaculture Department, 1940 Binangonan, Rizal, Philippines

Search for other papers by C.B. Santiago in
Current site
Google Scholar
PubMed

U. Focken

U. Focken Department of Animal Nutrition and Aquaculture in the Tropics and Subtropics Hohenheim University [480b], 70593 Stuttgart, Germany

Search for other papers by U. Focken in
Current site
Google Scholar
PubMed

, and

K. Becker

K. Becker Department of Animal Nutrition and Aquaculture in the Tropics and Subtropics Hohenheim University [480b], 70593 Stuttgart, Germany

Search for other papers by K. Becker in
Current site
Google Scholar
PubMed

Type:: Chapter

Pages:: 181–184

DOI:: https://doi.org/10.1163/9789004683600_045

Purchase instant access (PDF download and unlimited online access):

€42.00€35.00 excl. VAT

Add to Cart

Redeem Access Token

Summary

In order to investigate the effect of different protein/energy levels of diets (two commercial and one laboratory) on voluntary feed intake and energy partitioning in Tilapia (Oreochromis niloticus), 15 fish with an initial body mass of 33 g were reared individually in respirometric chambers for 42 days and offered 3 diets ad libitum. The protein contents of the diets were 36.1, 33.8 and 36.8% (dry matter base); the energy content 18.9, 18.4 and 19.2 kJ GE/g and 11.7, 10.5 and 15.4 kJ ME/g. The initial body composition and energy content was estimated from a control group. Feed consumption was recorded for each individual fish. Body mass development was monitored weekly. At the end of the experiment, the fish were sacrificed and their chemical composition (protein as N•6.25, lipid, ash) and gross energy content determined. To establish energy budgets, ingestion (I) was calculated from feed intake, retention (P) from accretion in the carcass, heat production (R) from oxygen consumption (indirect calorimetry) and apparently non-utilised energy (faecal and non-faecal losses, U) by difference from energy ingestion.

In the beginning, food consumption amounted to approximately 5% body mass equivalent (BME) per day for all groups and gradually decreased to 2.5, 2.8 and 1.6% BME by the end of the experiment. While the food consumption was significantly different between the treatments, there were no significant differences in the body mass development. Average final body mass was 98.6, 93.8 and 103.7 g. Energy retention was 29.7, 29.2 and 44.4% of GE ingested; heat dissipation 32.1, 27.9 and 36.0%; faecal and non-faecal losses 38.2, 43.2 and 19.6%. For all energy budget parameters, values for the laboratory diet were significantly different from those of commercial feeds 1 and 2. Calculation of metabolisable energy from ingested feed revealed no significant differences in the energy uptake, suggesting that the voluntary feed uptake was controlled by the demand for metabolisable energy. The fish were able to completely compensate for the lower ME content of the commercial feeds by increasing voluntary feed intake.

Citation Info

Save
Cite
Email this content

Share link with colleague or librarian

You can email a link to this page to a colleague or librarian:
Email this content
or copy the link directly:

https://brill.edhh.ma/abstract/book/9789004683600/B9789004683600_s045.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully

Collapse
Expand

Energy metabolism in animals

Proceedings of the 15th symposium on energy metabolism in animals

E-Book ISBN:: 9789004683600

Publisher:: Wageningen Academic

Print Publication Date:: 01 Jan 2001

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

Front Matter

Show Items

Back Matter

Show Items

Metrics

	All Time	Past 365 days	Past 30 Days
Abstract Views	32	18	8
Full Text Views	0	0	0
PDF Views & Downloads	0	0	0

African Studies	Education	Media Studies
American Studies	History	Middle East and Islamic Studies
Ancient Near East and Egypt	Human Rights and Humanitarian Law	Musicology
Art History	International Law	Philosophy
Asian Studies	International Relations	Religious Studies
Biblical Studies	Jewish Studies	Slavic and Eurasian Studies
Biology	Languages and Linguistics	Social Sciences
Book History and Cartography	Life Sciences	Theology and World Christianity
Classical Studies	Literature and Cultural Studies

Subjects

Authors

Open Access

Product Information

Company

Contact

Voluntary feed intake and energy partitioning in Tilapia (Oreochromis niloticus) fed diets with different protein/energy levels

Summary

Citation Info

Share link with colleague or librarian

Energy metabolism in animals

Proceedings of the 15th symposium on energy metabolism in animals

Table of Contents

Metrics

Metrics