Agris category codes: L50, L73
COBISS Code 1.08 Language:
English
THE
INFLUENCE OF IMMUNOGLOBULIN STATUS ON HEALTH STATUS AND GROWTH PERFORMANCE
IN CALVES TO THE AGE OF 24 WEEKS
a), Tomaž ZADNIK, Jože
STARIČ, Marija NEMEC and Jožica JEŽEK
a)
Univ. of Ljubljana, Veterinary Faculty, Gerbičeva 60, SI-1000
Ljubljana, Slovenia
ABSTRACT The aim of the
research was to study the influence of immune status on health status and
changing of heart girth with age in calves. Seventy one dairy calves from
birth to the age of 24 weeks were studied and their health status was
monitored. The blood samples were taken once a week, till the age of 6 weeks
and later on at the age of 8, 12, 16, 20 and 24 weeks. In blood samples the
concentration of IgG was measured with quantitative ELISA test. At each
bleeding, the heart girth was measured. The average IgG concentration in the
1st week of age was 26.15 ± 15.18 g/L. The calves were divided in
two groups; in the 1st group there were calves with IgG
concentration in the 1st week below average value, in the 2nd
one were calves with IgG concentration above average. Statistically
significant differences between groups were established at the age of one
(P < 0.001), two (P = 0.044), five (P = 0.001), eight (P = 0.017) and
sixteen weeks (P = 0.029). The percentage of diseased calves was
significantly higher in group 1 regarding to group 2. The heart girths
between groups did not differ significantly. In the research it was
established that the differences between groups in IgG level remained to the
end of research period and more calves diseased in the low IgG group.
Key words: cattle / calves
/ health status / immunoglobulins / heart girth
Agris category codes: L51
COBISS Code 1.08
Language:
English
THE
RELATIONSHIP BETWEEN DIET AND RETAINED PLACENTA IN COWS[1]
Krunoslav ALŠIĆ, Matija
DOMAĆINOVIĆ, Željko PAVIČIĆ, Željko BUKVIĆ, Mirjana BABAN and
a)
a) Josip Juraj
Strossmayer Univ. of Osijek, Fac of Agriculture, Dept. of Animal Husbandry,
Trg svetog Trojstva 3, HR-31000 Osijek, Croatia
ABSTRACT Retained
placenta (RP) is one of the most common
complications occurring in the post-partum period in cows. Beside
other reasons, many authors stress the influence of diet on the incidence of
RP. However, the role of minerals and vitamins fed at this time on
subsequent fertility is poorly understood. As nutritional causes of RP are
due primarily to the diet fed the last 6 to 8 weeks before calving, the aim
of this paper was to investigate the relationship between diet in dry and
transition periods and subsequent occurrence of RP, as well as in the time
of introduction to lactation in fresh cows, with special emphasis on content
of minerals and vitamins in diet. The investigation has been carried out on
a big dairy farm situated on the east of Croatia with 1775
Holstein-Frisian (HF) cows in duration of one year. Diet samples from dry
period (DP), from period approximately from the 21st day before
calving till the day of calving (BC) and period of introduction to lactation
(IL) were subjected for analysis of calcium (Ca), phosphorous (P), selenium
(Se), iodine (I) and vitamins A, D3 and E. The observed rate of
cows with RP on the investigating farm was rather high (16.55%). High diet
concentrations both for Ca and P in DP and BC periods (0.98 and 0.62% of Ca;
0.37 and 0.52% of P, respectively), combined with low concentration of
vitamin D in DP and BC periods (12800
and 14400
IU/day, respectively), as well as low concentration of Se in DP and BC
periods (0.08 and 0.07 mg/kg, respectively) combined with low concentration
of vitamin E in DP and BC periods (160 and 180 IU/day, respectively) were
identified as critical factors that could have contributed in influencing
high incidence of RP on the investigating farm.
Agris category codes: L50
COBISS Code
1.08 Language:
English
BONE TISSUE METABOLISM IN CATTLE
Jože STARIČ,
Jožica JEŽEK, Martina KLINKON, Marija NEMEC and Tomaž ZADNIK
University of
Ljubljana, Veterinary faculty, Gerbičeva 60, SI-1000 Ljubljana, Slovenia
ABSTRACT Bone metabolism is closely connected to calcium
metabolism. Biochemical markers of bone metabolism in blood serum and/or
urine are indicators of bone metabolic activity at real time. Disorders of
bone metabolism represent a significant scope of health problems in cattle.
The objective of the study was the evaluation of bone-alkaline phosphatase (BALP)
a marker of bone formation and C-terminal telopeptide (CTX), a marker of
bone resorption in blood serum in dairy cattle of different ages and
different productive stages. The following groups of Slovenian Black and
White breed cattle were investigated: calves, primiparous cows and cows in
the fourth or higher lactation kept in tie-stalls type and cows at early dry
off period after the fourth or higher lactation in tie-stalls type and on
pasture. Calves have statistically significantly higher BALP values in blood
serum than cows (P < 0.05). Statistically significantly (P < 0.05) higher
values for BALP and CTX were obtained also in primiparous cows at the pick
of lactation than in the fourth or higher lactation cows at the same phase
of lactation. We found statistically significantly lower (P < 0.05) mean
BALP blood serum activity in cows at early dry off that were housed in
tie-stall type than in those on pasture. The difference in mean BALP between
cows in the fourth or higher lactation at pick lactation and those at early
dry off period was not statistically significant. Biomarkers of bone
metabolism can be implemented in monitoring cattle bone metabolism and
calcium metabolism.
Key words: cattle / bone tissue / metabolism / biomarkers
Agris category codes: L50, L73
COBISS Code
1.08 Language:
English
ANTIBODY RESPONSE FOLLOWING SOW VACCINATION USING CELL AND RECOMBINANT
VACCINES, SINGLE AND MULTIPLE APPLICATION
Stane
KOŠOROKa)and Miran KASTELIC
a)
Farme Ihan d.d., Breznikova 89, SI-1230 Domžale, Slovenia
ABSTRACT The vaccination of pregnant sows with E. coli
antigens to increase specific antibodies in colostrum and milk and
subsequently the protection of suckling piglets from neonatal E. coli
diarrhea is a common and efficient method, already used for many years. The
vaccination to protect individual animals against erysipelas has been used
even for a longer time. There are many vaccines and vaccination techniques
available on the market, among them herd specific “stable” vaccines for
E. coli, inactivated cell vaccines and recombinant DNA vaccines. Unlike
vaccines for pet animals, which are mostly polyvalent vaccines, there are
very few polyvalent pig vaccines available on the EU market. Recently,
Intervet company has developed Diluvac forte (DF) adjuvant which enables
mixing of different monovalent vaccines. Porcilis DF vaccine line makes it
possible to combine different antigens in the syringe and only one injection
of desirable combination of antigens. The difference between two different
vaccines (Colisorb, Porcilis DF) was tested to find out the antibody
response following vaccination with monovalent recombinant vaccine against
bivalent cell vaccine, and the antibody response followed separate and mixed
injection of two antigens in one syringe. Statistical evaluation of serum
antibody response obtained by ELISA test confirmed the expectations. DNA
recombinant vaccines gave significantly higher antibody titers compared to
cell vaccine. Porcilis vaccines mixed together prior to application gave
surprisingly better response compared to separated application. The result
leads to reduction of injections to pregnant sows and consequently to better
immune response.
