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Title: Nutritional value of seaweed (Ulva rigida) for poultry
Authors: Ventura, M. R. 
Castañon, J. I R 
McNab, J. M.
Issue Date: 1994
Publisher: 0377-8401
Journal: Animal Feed Science and Technology 
Abstract: A study was conducted to establish the nutritive value (true metabolizable energy (TMEn), apparent metabolizable energy (AMEn) and chick performance) of seaweed (Ulva rigida) in poultry diets. The proximate composition (kg-1 DM) of seaweed was: 33 g nitrogen, 17 g ether extract, 47 g crude fibre, 312 g NDF, 153 g ADF, 13 g pentosans and 228 g ash. The TMEn value of U. rigida, determined after tube-feeding, was 5.7 MJ kg-1 and 4.3 MJ kg-1 DM for chicks and cockerels (P < 0.05), respectively; the AMEn value, determined by regression using titanium dioxide as an indigestible dietary marker in a chick growth trial fed on diets containing (kg-1) 0, 100, 200 and 300 g seaweed, was 2.9 MJ kg-1 DM. As the content of seaweed was increased, feed intake and growth rate decreased (P < 0.05). The results of this study showed that crude U. rigida is not a suitable ingredient for poultry diets, at least at inclusion rates of 100 g kg-1 or higher; however, seaweed did not have an antinutritive effect, because the addition of seaweed did not modify the TMEn of the rest of the diet (standard diet or glucose). © 1994.
ISSN: 0377-8401
DOI: 10.1016/0377-8401(94)90083-3
Source: Animal Feed Science and Technology[ISSN 0377-8401],v. 49, p. 87-92
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