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The use of bovine somatotropin (bst) to increase summer milk production

Published online by Cambridge University Press:  24 November 2017

D J Roberts ,
R J Wells ,
D N Logue  and
A G Buchanan
D J Roberts
Affiliation:
The West of Scotland College, Crichton Royal Farm, DUMFRIES DG1 4SZ
R J Wells
Affiliation:
The West of Scotland College, Crichton Royal Farm, DUMFRIES DG1 4SZ
D N Logue
Affiliation:
The West of Scotland College, Crichton Royal Farm, DUMFRIES DG1 4SZ
A G Buchanan
Affiliation:
Elanco Products Limited, Dextra Court, Chapel Hill, Basingstoke , RG21 2SY
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Extract

Farmers are receiving a price incentive to produce more milk during the summer months. Bovine somatotropin (BST) could be used as a means of increasing milk yield from late winter/spring calving cows during the summer months. However, most of the research work with BST has been with housed cattle on winter feeding systems. The objective of this experiment was to evaluate the use of BST with grazing cattle supplemented with silage as a buffer feed.

Thirty-six January to March calving multiparous Friesian dairy cows were allocated to 4 treatments: CG - Control/Grazing, TG - Treated/Grazing, CB - Control/Buffer fed, TB - Treated/Buffer fed. The treated cattle were given 640 mg of recombinantly derived bovine somatotropin (Somidobove Elanco Products Limited) in a sustained release formulation at 28 day intervals. The treatment period at grass lasted for 8 weeks from 18 August 1988. The cattle were then housed for a further 8 weeks in 2 groups of sixteen cows (with one block of cows omitted from the experiment).

Type
Nutrition and Management of Dairy Cows
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1990 , March 1990 , pp. 44
Copyright
Copyright © The British Society of Animal Production 1990

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