Performance in blue fox (Vulpes lagopus) fed low-protein diets supplemented with DL-methionine and L-histidine

The effects of low-protein diets supplemented with DL-methionine (MET) and L-histidine (HIS) on growth, pelt size and pelt quality were studied in two performance trials conducted at the Kannus Research Farm Luova Ltd, Finland. Both trials were conducted with 200 blue foxes, caged male-female pairs,...

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Bibliographic Details
Published in:Agricultural and Food Science
Main Authors: Ylinen, Vappu, Pylkkö, Päivi, Peura, Jussi, Tuomola, Essi, Valaja, Jarmo
Format: Article in Journal/Newspaper
Language:English
Published: The Scientific Agricultural Society of Finland 2018
Subjects:
fur animal
protein level
amino acids
growth
pelt size
pelt quality
Vulpes lagopus
Online Access:https://journal.fi/afs/article/view/73149
https://doi.org/10.23986/afsci.73149
Description
Summary:The effects of low-protein diets supplemented with DL-methionine (MET) and L-histidine (HIS) on growth, pelt size and pelt quality were studied in two performance trials conducted at the Kannus Research Farm Luova Ltd, Finland. Both trials were conducted with 200 blue foxes, caged male-female pairs, initial age on average 20 weeks (trial 1) and 25 weeks (trial 2). In trial 1, diets contained digestible crude protein (DCP) 24%, 20% and 16% of metabolisable energy (ME). In trial 2, diets contained DCP 20%, 16.5% and 13% of ME. In both trials, the middle protein level was fed with or without MET and the lowest protein level was fed with MET and with or without HIS. In trial 1, blue foxes showed the greatest average daily gain (ADG) in the highest protein diet. Pelt size and pelt quality were not affected. In trial 2, blue foxes showed the greatest ADG in the low-protein groups. Pelt size and pelt quality were not affected.

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