Body Condition Scores, Milk Yield and Composition, Hematological and Biochemical Indices of Blood in High-Yielding Dairy Cows

Sivkin, N.V.; Karlikova, G.G.; Gusev, I.V.

Dostizheniya nauki i tekhniki APK 2012(8): 75-77

2012


ISSN/ISBN: 0235-2451
Accession: 070482846

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 1 workday
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Abstract
The aim of this work was to study the relationship of body condition evaluated in scores (BCS) on a scale of1 to 5, in the dry period with milk production, hematological and biochemical indices of blood of cows. Three groups of Russian Black and White cows of fatness in the dry period (1 st - BCS 1.5 to 3.0, 2 nd BCS 4.0 to 5.0 and control, BCS 3.0 to 4.0) wdre formed and studied the dynamics of changes in BCS on the 1st, 3rd, 5th and 7th months of lactation. During the 1 st month of lactation in the 2 nd and control groups, respectively, BCS has decreased from 4.2 to 3.5 and from 3.5 to 2.8, while in the 1 st group it increased from 2.5 to 3.2. Further BCS from month to month were fallen to 2 or less. Yield for the previous 305 days of lactation in cows of the 1 st, 2 nd and control groups was equal, respectively, 6938, 7944 (p <0.05) and 7818 kg of milk, fat content 3.88, 3.96 and 3.91%, protein content 3.13, 3.12, and 3.13%, the production of milk fat 269, 315 (p <0.05) and 306 kg and the milk protein production of 222, 302 and 276 kg. Days open of cows in Group 1 during the previous lactation was significantly shorter (93 days) than in group 2 (216 days) and in control cows (164 days). BCS correlated positively with the service period (r = 0, 39, p <0.05), with the number of milking days (r = 0,36) and with a yield of 305 days of lactation (r = 0,27). In the subsequent lactation milk yield of cows of the 1 st, 2 nd and control groups was 7628, 7470 and 7500 kg of milk, the fat productions are 318, 307 and 292 kg. Days open the 1 st and 2 nd groups, respectively, equal to 125 and 154 days (p <0,05), 136 days in the control. On hematological and biochemical indices of performance group did not have a significant impact.