The effect of bovine somatotropin with or without avoparcin on milk yield, milk composition, body weight, body condition score and reproductive performance of autumn calving Friesian dairy cows
Murphy, M.; O' Callaghan, D.; Rath, M.; Roche, J.F.
Journal of Dairy Science 72(Suppl 1): 444-445
1989
ISSN/ISBN: 0022-0302 Accession: 001971219
In a trial with 48 cows, treatment for 84 days with somatotropin (20.6 mg), avoparcin (100 mg) or both increased milk yield by 18.8, 7 and 25.6% resp., without effects on milk composition, body weight, body condition or reproductive performance.
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