1266 Association between management practices and dairy herd performance

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 611-611
Author(s):  
P. Turiello ◽  
J. M. Piñeiro ◽  
G. M. Schuenemann
Keyword(s):  
Management Practices ◽  
Dairy Herd

scholarly journals Effect of Business and Dairy Herd Management Practices on the Variable Cost of Producing Milk

1987 ◽  
Vol 70 (8) ◽  
pp. 1701-1709 ◽  
Author(s):  
C.B. Williams ◽  
P.A. Oltenacu ◽  
C.A. Bratton ◽  
R.A. Milligan
Keyword(s):  
Management Practices ◽  
Dairy Herd ◽  
Variable Cost ◽  
Herd Management

Reliability of the bulk milk somatic cell count as an indication of average herd somatic cell count

2009 ◽  
Vol 76 (4) ◽  
pp. 490-496 ◽  
Author(s):  
Jan Lievaart ◽  
Herman W Barkema ◽  
Henk Hogeveen ◽  
Wim Kremer
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Management Practices ◽  
Dairy Herd ◽  
Subclinical Mastitis ◽  
Clinical Mastitis ◽  
Bulk Milk ◽  
Sampling Variation ◽  
The Difference

Bulk milk somatic cell count (BMSCC) is a frequently used parameter to estimate the subclinical mastitis prevalence in a dairy herd, but it often differs considerably from the average SCC of all individual cows in milk. In this study, first the sampling variation was determined on 53 dairy farms with a BMSCC ranging from 56 000 to 441 000 cells/ml by collecting five samples on each farm of the same bulk tank. The average absolute sampling variation ranged from 1800 to 19 800 cells/ml. To what extent BMSCC represents all lactating cows was evaluated in another 246 farms by comparing BMSCC to the average herd SCC corrected for milk yield (CHSCC), after the difference was corrected for the sampling variation of BMSCC. On average BMSCC was 49 000 cells/ml lower than CHSCC, ranging from −10 000 cells/ml to 182 000 cells/ml, while the difference increased with an increasing BMSCC. Subsequently, management practices associated with existing differences were identified. Farms with a small (<20%) difference between BMSCC and CHSCC administered intramuscular antibiotics for the treatment of clinical mastitis more often, used the high SCC history when cows were dried off more frequently and had a higher number of treatments per clinical mastitis case compared with farms with a large (⩾20%) difference. Farms feeding high-SCC milk or milk with antibiotic residues to calves were 2·4-times more likely to have a large difference. Although sampling variation influences the differences between BMSCC and CHSCC, the remaining difference is still important and should be considered when BMSCC is used to review the average herd SCC and the subclinical mastitis prevalence.

scholarly journals An assessment of dairy herd bulls in southern Australia: 1. Management practices and bull breeding soundness evaluations

2016 ◽  
Vol 99 (12) ◽  
pp. 9983-9997 ◽  
Author(s):  
A.S. Hancock ◽  
P.J. Younis ◽  
D.S. Beggs ◽  
P.D. Mansell ◽  
M.A. Stevenson ◽  
...  
Keyword(s):  
Management Practices ◽  
Dairy Herd ◽  
Breeding Soundness

Estimation of genetic parameters for milk cell count and correlations with production traits in friesian holstein heifers

1991 ◽  
Vol 1991 ◽  
pp. 168-168 ◽  
Author(s):  
G.J.T. Swanson ◽  
A. Gnanasakthy
Keyword(s):  
Cell Count ◽  
Management Practices ◽  
Dairy Herd ◽  
Economic Loss ◽  
Production Traits ◽  
The Third ◽  
Cell Counts ◽  
Control Programmes ◽  
Herd Milk ◽  
Mastitis Control

Mastitis is a major source of culling and economic loss in the dairy herd. To date in England and Wales the main monitor of mastitis both within a herd and nationally is provided by monthly herd milk cell counts. The main thrust of mastitis control programmes has been to improve management practices such as dry cow treatment and milk machine testing. Interest has also been shown in the use of milk cell count as an indirect means of selecting for resistance to mastitis infection. Wood and Booth (1983) indicated that the cell count at the third monthly recording had the highest correlation with lactation mean cell count. The objective of this study was to estimate the herilability of somatic cell count, taken at the third recording after calving in the heifer lactation and to examine the association between cell count and production traits.

scholarly journals A multilevel model with clustered management practices differentiating dairy herd environments in southeastern Sicily

2013 ◽  
Vol 151 (1) ◽  
pp. 58-65
Author(s):  
E. Raffrenato ◽  
R.W. Blake ◽  
P.A. Oltenacu ◽  
M. Gambina ◽  
G. Licitra
Keyword(s):  
Multilevel Model ◽  
Management Practices ◽  
Dairy Herd
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