Article

Effect of sugar supplementation on rumen protozoa profile and papillae development in retarded growth calves.

Department of Clinical Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.
Journal of Veterinary Medical Science (impact factor: 0.85). 11/2010; 72(11):1471-4. pp.1471-4
Source: PubMed

ABSTRACT The effect of sugar supplementation with 1 g/kg BW twice a week for eight weeks on rumen protozoa was determined in ten retarded growth calves. Rumen juice was sampled by abdominal paracentesis during the experiment. Papillae development of rumens excised by experimental laparotomy was macro- and micromorphologically determined before and after sugar supplementation in a selected calf. The numbers of Entodinium, Isotricha, Dasytricha and Epidinium protozoa increased by 3 to 12 folds after 1-3 wk of supplementation and subsequently decreased. The heights of the rumen papillae after sugar supplementation showed marked development compared with before supplementation (Post vs. Pre: 4.44 ± 0.43 vs. 1.36 ± 0.24 mm). Sugar supplementation accommodates the rumen protozoa profile and stimulates papillae development in retarded growth calves.

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Keywords

abdominal paracentesis
 
Entodinium
 
heights
 
Papillae development
 
Pre
 
retarded growth calves
 
Rumen juice
 
rumen papillae
 
rumen protozoa
 
rumen protozoa profile
 
rumens excised
 
selected calf
 
stimulates papillae development
 
sugar supplementation
 
supplementation
 

Tomohiro Sato