Publication: The influence of different fibrous supplements in the diet on ruminal histology and histometry in veal calves
Authors
Di Giancamillo, A. ; Bosi, G. ; Arrighi, S. ; Savoini, G. ; Domeneghini, C.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
The aim of this study was to determine
whether the administration of four different solid feeds
would influence selected morphological and morphofunctional
aspects of the rumen mucosa in veal calves.
The fibrous supplementation of the liquid diet of veal
calves has been provided by recent EU formulation (EC
Council Directive 91/629/1991; EC Council Directive
97/2/1997).
Twenty-five Holstein calves were assigned to either
exclusively liquid diet (milk replacer, control), or
pelleted feed, corn silage, extruded feed, dried corn
silage. The morpho-functional effects of the fibrecontaining
diets were examined evaluating histological
and histometrical characteristics of ruminal mucosa after
the slaughter of calves.
There were slight to severe histological
abnormalities in the rumens of all animals examined.
The severe histological abnormalities were present in
calves given pelleted feed, corn silage, and extruded
feed. Dried corn silage caused less ruminal damage. We found that the length and epithelial thickness of ruminal
papillae were higher in control veal calves than in
dietary fibre-supplemented animals. The results of the
present study, even if partially, support the EU
prescription in the use of fibre diets in veal calves as
integration of the traditional milk replacer diet.
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