METABOLISM OF NITROGEN-CONTAINING COMPOUNDS IN THE RUMEN FLUID AND PRODUCTIVE PARAMETERS OF COWS AT THE PRESENCE OF COFFEE SLUDGE IN THE DIET

Bìol. Tvarin, 2016, Volume 18, Issue 3, pp. 84–90

http://dx.doi.org/10.15407/animbiol18.03.084

METABOLISM OF NITROGEN-CONTAINING COMPOUNDS IN THE RUMEN FLUID AND PRODUCTIVE PARAMETERS OF COWS AT THE PRESENCE OF COFFEE SLUDGE IN THE DIET

A. S. Romanchuk

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Institute of Agriculture Carpathian region,
5 Hrushevskoho str., Obroshyno, Pustomyty district, Lviv region, 81115, Ukraine,
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The biochemical mechanisms of influence of coffee sludge in the summer diet on metabolic processes and productive performance of cows are poorly understood. The purpose of the study was to study the metabolism of nitrogenous compounds in rumen fluid, milk production and composition of milk in cows with the presence of the coffee slurry in their summer diets.

Higher levels of fat were obtained by the addition of coffee sludge to the diet of cows. Cows were fed with forage containing coffee slurry in amount 8–16 %. It was established that on the average cows fed with forage consisting of young grasses and legumes and containing coffee sludge received daily 4.2–4.6 % more neutral detergent and 11.6–12.2 % more acid detergent fiber. Feeding cows with coffee sludge results in reduction of nitrogen ammonia and amino nitrogen in their rumen fluid regardless to the time relative to the start of feeding. Thus, the amount of protein nitrogen in the rumen fluid of research cows increased at the 10^th hour from the start of feeding, and general — to 7^th–10^th.

As a result of feeding the young grass, fodder and coffee sludge the average daily milk yield in cows increased. At the same time in the milk of research cows the content of protein, fat and lactose increased. An extra feeding cows coffee slurry in an amount of 16 % of feed weight with forage containing young grasses and legumes has most noticeable effect on the metabolism of nitrogenous compounds in the rumen of cows and productive performance.

Keywords: COFFEE SLURY, ACID DETERGENT FIBER, MICROBIAL PROTEIN, NITROGEN-CONTAINING COMPOUNDS, COWS, PRODUCTIVITY

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