scholarly journals Evaluating alternate models to estimate genetic parameters of calving traits in United Kingdom Holstein-Friesian dairy cattle

2012 ◽  
Vol 44 (1) ◽  
Author(s):  
Sophie A E Eaglen ◽  
Mike P Coffey ◽  
John A Woolliams ◽  
Eileen Wall
Keyword(s):  
United Kingdom ◽  
Dairy Cattle ◽  
Genetic Parameters ◽  
Holstein Friesian ◽  
Calving Traits

scholarly journals Genome-wide association study for calving traits in Holstein–Friesian dairy cattle

animal ◽  
2014 ◽  
Vol 8 (2) ◽  
pp. 224-235 ◽  
Author(s):  
D.C. Purfield ◽  
D.G. Bradley ◽  
J.F. Kearney ◽  
D.P. Berry
Keyword(s):  
Dairy Cattle ◽  
Association Study ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Holstein Friesian ◽  
Calving Traits

scholarly journals Causal relationships between milk quality and coagulation properties in Italian Holstein-Friesian dairy cattle

2015 ◽  
Vol 47 (1) ◽  
Author(s):  
Francesco Tiezzi ◽  
Bruno D Valente ◽  
Martino Cassandro ◽  
Christian Maltecca
Keyword(s):  
Dairy Cattle ◽  
Milk Quality ◽  
Causal Relationships ◽  
Holstein Friesian

Comparison of milk production, mastitis, lameness and days to conception of Brown Swiss, Holstein and Holstein cross Brown Swiss dairy cattle

2006 ◽  
Vol 2006 ◽  
pp. 86-86
Author(s):  
G Wellwood ◽  
J K Margerison
Keyword(s):  
Dairy Cattle ◽  
Somatic Cell ◽  
Milk Production ◽  
Milk Yield ◽  
Complex Disease ◽  
Economic Loss ◽  
Brown Swiss ◽  
Somatic Cell Counts ◽  
Cell Counts ◽  
Holstein Friesian

Mastitis is a complex disease causing inflammation of the udder, which has been estimated to cost the dairy farmer between £40-£117/cow per year (Stott et al., 2002). Economic loss occurs as a result of discarded milk, reduced milk yield and milk quality, increased vet costs and an increase in replacement costs. The objective of this study was to examine the effect of breed on the incidence of mastitis and somatic cell counts and milk production capabilities of Holstein Friesian, Brown Swiss and Brown Swiss crossbred cows.

The effect of space allowance and milk yield level on the performance and behaviour of dairy cattle housed in straw yards

1998 ◽  
Vol 1998 ◽  
pp. 108-108
Author(s):  
J. A. Fregonesi ◽  
J.D. Leaver
Keyword(s):  
Dairy Cattle ◽  
Milk Yield ◽  
Stocking Density ◽  
Important Variable ◽  
Early Lactation ◽  
Ways Of Coping ◽  
Yield Level ◽  
Face Width ◽  
Holstein Friesian ◽  
Friesian Cows

Space allowance could be an important variable affecting production, health, reproductive performance and behaviour of dairy cattle. Also, high and low yielding cows may have different ways of coping with insufficient space allowance. The aim of this experiment was to study the influence of space allowance and milk yield level on the performance and behaviour of strawyard housed dairy cows.The experiment was carried out using 24 Holstein Friesian cows with two groups in early lactation of high (over 30 kg/day milk yield) and two groups in late lactation of low yield (under 25 kg/day milk yield). The groups were allocated to strawyard systems with low stocking density (bed area/cow = 9 m2; pen area/cow = 13.5 m2; feed face width/cow = 1.5 m) or high stocking density (bed area/cow = 4.5 m2; pen area/cow = 6.75 m2; feed face width/cow = 0.75m) conforming to a changeover design with two periods, each of four weeks. The cows were fed a total mixed ration ad libitum and 2kg/cow/day of concentrate in the milking parlour. All animals were milked twice daily.

scholarly journals Estimation of genetic parameters using a random regression monthly test-day model in an Ethiopian dairy cattle population

2016 ◽  
Vol 50 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Gebregziabher Gebreyohannes ◽  
Skorn Koonawootrittriron ◽  
Mauricio A. Elzo ◽  
Thanathip Suwanasopee
Keyword(s):  
Dairy Cattle ◽  
Genetic Parameters ◽  
Random Regression ◽  
Cattle Population ◽  
Estimation Of Genetic Parameters
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