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Research
5.
Relationship between body condition score, body
weight, some nutritional metabolites changes in
blood and reproduction in Algerian montbeliad cows -
C. Mouffok, T. Madani, L. Smara, M. Baitiche, L.
Allouche, F. Belkasmi
Vet World. 2011; 4(10): 461-466
doi: 10.5455/vetworld.2011.4561-466
Abstract
The objective of this study was to investigate
through a nutritional and biochemical approach the
variability of reproductive performance in dairy
cows of semi arid area herds. Seventy four
multiparous females reared in four farms were
tracked from one month before calving to the third
month postpartum. Information about reproductive
events were taken once a month, and the body
condition score evaluated on a 1 to 5 scale
according to the EDMONSON method (1989). Blood
samples were taken on a sample of 23 cows chosen
according to body condition score before calving
for biochemical analysis of energy, nitrogen and
minerals parameters. Maximum concentrations
depended to physiological stage. Blood glucose and
calcium are stable at around 0.60g / l and 0.76 g
/ l respectively (p>0.05). Uremia (0.27g/l vs
0.16g/l) and triglycerides (0.74g/l vs 0.48g/l)
are higher in the first month of lactation (p
<0.05). Cholesterol (1.42g/l vs 1.03g/l) is higher
in the 3rd month post-partum. The results show
also that best performances are recorded in cows
with BC before calving around 3 and 3.5 (p<0.05)
and for those loosing less BC in the first months
postpartum. The nutritional and metabolic profiles
of females were used to characterize high female
performance which has a reduces format and losses
of BC in post-partum are minimal and late; They
express the moderate concentration of glucose
(0.60g / l), elevated cholesterol (> 1.20 g / l)
and low triglycerides (about 0.60 g / l). Great
format Cows with early and significant loss of BC
after calving. They express a poor reproductive
performance with high triglycerides concentration
(1.02 g / l) in the 1st month of lactation.
Keywords: Reproduction, Dairy cows, Body
condition, Biochemical parameters, Semi arid.
