0.857
IF5
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IF
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JCR
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MNiSW
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ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

Influence of grain processing in regard to serum metabolites and enzymes for finishing bull calves

C. Castillo 1  ,  
V. Pereira 1,  
J. Sotillo 2,  
A. Suárez 1,  
J. Méndez 3,  
P. Vázquez 4,  
 
1
University of Santiago de Compostela, Department of Animal Pathology, Veterinary Faculty, Campus Universitario s/n, 27002, Lugo, Spain
2
University of Murcia, Department of Animal Medicine and Surgery, Veterinary Faculty, Campus de Espinardo, 30100 Murcia, Spain
3
Technical Department of COREN, SCL 32003 Ourense, Spain
4
IMASDE Agroalimentaria, 28224 Madrid, Spain
J. Anim. Feed Sci. 2011;20(4):483–492
Publish date: 2011-12-06
KEYWORDS
ABSTRACT
This study compared two grain processing methods that are widely used for beef cattle, grinding and steam pelleting, with respect to serum metabolic parameters: glucose, non-esterified fatty acids (NEFA), serum urea nitrogen (SUN), total serum protein (TSP), albumin, L-lactate, aspartate aminotransferase (AST), γ-glutamyltransferase (GGT) and amylase. Ten Belgian Blue bull calves were allotted randomly to each of two experimental groups: PF, fed pelleted concentrate, and GF, fed ground concentrate. During the 77-day study most parameters underwent significant variation in time, increasing only numerically serum values of total protein, albumin, AST and amylase, while serum glucose, NEFA and GGT decreased numerically. Statistically significant differences were found only between groups PF and GF for creatinine (higher in group PF, in relation with its greater average body weight) and urea nitrogen, which for unknown causes fluctuated in opposite directions in the two groups throughout most of the study and attributable to changes in ruminal protein digestion. Neither serum glucose nor L-lactate were affected by treatment of grains.
CORRESPONDING AUTHOR
C. Castillo   
University of Santiago de Compostela, Department of Animal Pathology, Veterinary Faculty, Campus Universitario s/n, 27002, Lugo, Spain
ISSN:1230-1388