Influence of exogenous amylase on milk production and composition in dairy cows

Tóthi, Róbert and Tóth, Tamás (2017) Influence of exogenous amylase on milk production and composition in dairy cows. ÁLLATTENYÉSZTÉS ÉS TAKARMÁNYOZÁS, 66 (1). pp. 59-66. ISSN 0230-1814

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Abstract

The effect of an exogenous rumen-resistant amylase preparation on live weight, milk production and milk composition in Holstein Friesian dairy cows (n=70) was examined in a Hungarian commercial dairy farm experiment. According to the Hungarian feeding practice corn silage-alfalfa haylage-dried corn meal based diet was used in the diets. Milk production was recorded every day. Chemical analyses were made from the morning milked samples once a week. There was a 3-week long preliminary and a 12-week long experimental period in the trial. The average days in milk (DIM) at the start of the experiment were 71 days (control) and 72 days (experimental), respectively. All the animals were weighed at the beginning (control: 651 kg/cow; experimental: 657 kg/cow) and at the end of the trial (control: 685 kg/cow; experimental: 697 kg/cow). The α-amylase supplementation significantly (p0.05) was observed on milk dry matter (DM), milk fat and milk protein but significant decrease (p0.05) live weight changes of the cows during the experiment (control: 0.40 kg/day vs. experimental: 0.48 kg/day).

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