Oral and Poster Abstracts

correction of diet and phosphorus supplement was useful for treatment
and prevention of hypophophatemia.
458 Ketosis in Dairy Cows under Obligatory Reduction of Feed
Intake
A. Elsheikh 1 , T. Allam 2 , H. Morsy 3
1 Faculty of Veterinary Medicine, Animal Medicine, Zagazig, Egypt,
Egypt
2 Animal Health Research Institute,Zagazig, Animal Medicine,
Zagazig,Egypt, Egypt
3 Faculty of Veterinary Medicine, Suez Canal University, Nutrition
and Clinical Nutrition, Ismailia, Egypt
Clinical findings, post-mortem, laboratory examination of blood serum
and urine as well as milk production and body weight were done in
lactating Friesian cows subjected to a reduction of food intake at the
first and second month of parturition.
Clinical symptoms included loss of body weight, dehydration, sunk
eyes, reduction of milk production, crossing of fore limb, lameness,
constipation, ketoneuria and acetone odour were appeared within 3-7
weeks after restriction of food intake.
Post-mortem of dead or emergency slaughtered cows showed a yellow
gelatinous foamy fluid inside and around visceral organs, oedema of
pericardium, and intestine. Enlargement greasy and fatty degeneration
of liver which was easily perforated on pressure.
Serum levels of ketone bodies and total lipids were significantly
increases meanwhile serum levels of glucose, total protein, calcium,
phosphorus and magnesium were significantly decreased. It is
concluded that prolonged feed restriction causes chronic wasting
form of ketosis, serous complication and severe economic loss
among dairy cows due to sharp drop of milk production and loss of
body weight.
459 RBC and WBC Counts in Lactating Dairy Cows Affected by
Subacute Ruminal Acidosis
M. Morgante 1 , M. Gianesella 1 , C. Cannizzo 1 , P. Dalvit 2 ,
M. Gatto 1 , LM. Coppola 1 , L. Moro 2
1
Universita’ degli Studi di Padova, Dipartimento di Scienze Cliniche
Veterinarie, Legnaro (PD), Italy
2
Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro (PD),
Italy
The influence of subacute ruminal acidosis (SARA) on ruminal
microbiology has received considerable attention, but less is known
about systemic manifestations that arise from SARA probably because
it is well known that variables such as breed, stage of growth,
reproductive status, and stage of lactation have an influence on many
blood parameters. The aim of this study was to investigate possible
changes in some haematological parameters in dairy cows affected by
SARA. During autumn 2007 the study was carried out on 12 highly
productive farms, stationed in different zones throughout northern
Italy. In all farms, 12 cows in early lactation, in good body condition
and without clinical signs of disease were selected randomly from each
herd, to perform rumenocentesis and obtain rumen fluid. Blood
samples for hematological profiles were obtained from the same cows
that had rumenocentesis performed by jugular venipuncture. The herds
were divided into 3 groups depending on the mean rumen pH: group A
farms with pH>5.8 (normal), group B pH between 5.6 and 5.8 (critical)
and group C, pH