Hydrolyzed feather meal as feed component in diets for rainbow trout(oncorhynchus mykiss)and effects of dietary protein/energy ratio on the efficiency of utilization of digestible energy and protein
作者:
E. Pfeffer,
D. Wiesmann,
Birgit Henrichfreise,
期刊:
Archiv für Tierernaehrung
(Taylor Available online 1994)
卷期:
Volume 46,
issue 1
页码: 111-119
ISSN:0003-942X
年代: 1994
DOI:10.1080/17450399409381762
出版商: Taylor & Francis Group
关键词: Fish;Rainbow trout;Hydrolyzed feather meal;Energy utilization;Protein utilization;Gain composition
数据来源: Taylor
摘要:
Two feeding trials were performed on rainbow trout of mean initial weights of 40 and 50 g and lasting for 12 and 14 weeks, respectively. In trial 1, diets contained per kg 300 g fish meal and varying proportions of gelatinized maize starch plus either casein or hydrolyzed feather meal. Dietary crude protein content varied from about 27 to about 53%. In trial 2, all diets had about 45% crude protein. Fish meal (300 g/kg) was replaced in 3 steps by hydrolyzed feather meal either without or with supplementation of L‐ lysine‐HC1 and/or DL‐methionine.
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