Milk productivity of cows by using in rations during winter-stall period of maintenance vetch-barley silage

  • N. Fedak Institute of Agriculture of the Carpathian region of NAAS, Obroshyno village, Pustomyty district, Lviv region, Ukraine
  • I. Dushara Institute of Agriculture of the Carpathian region of NAAS, Obroshyno village, Pustomyty district, Lviv region, Ukraine
Keywords: dairy cows, feeding, silage, dairy productivity, milk quality

Abstract

The efficiency of feeding of the dairy cows by silage from new varieties of fodder crops (barley cv. Broadleaf and vetch  cv. Lvivyanka) as a part of silage-concentrate-root ration in the conditions of Precarpathians area(comparatively to corn silage) are investigated and influence of its feeding on the milk productivity level and milk quality characteristics are also studied.

It was established that the total yield of natural milk per 1 head increased to 8,6 %, and in recount to fat content of 4,0–13,4 %; the average yield increased respectively by 8,6 % and to 4,0% fat – 13,7%.

Analysis of milk quality characteristics proves an advantage experimental group to control. In particular, the content of fat and protein in the milk of cows increased to 0,16 %. The part of dry matter increased to 0,2 %. Absolute acidity values were within normal limits. There was a tendency to increase the of milk sugar content and ash in the cows milk of experimental group. The content of calcium in the cows milk of the experimental group increased to 0,04 %. The milk of the experimental group cows dominated control by milk density and phosphorus content without reliable difference.

The cost of feed units per 1 kg of milk produced in the experimental group were lower by 1,3 %. The expenditure of digestible protein per 1 kg of milk in the control was 71,0 g vs. 77,0 g in the experiment. The difference in absolute values was 6.0 g (8.5%) in favor of the experimental group.

Thus, the use in feeding dairy cows vetch-barley increases the average daily milk yield and milk quality characteristics for almost the same cost of feed per unit, compared to corn analogue.

It was recommended adding to the structure of silage-concentrate-root ration of dairy cows in winter-stalled period of maintenance in the area of Precarpathians silage from the barley cv. Broadleaf and the vetch cv. Lvivyanka. In the structure of the feed mix for barley should be 75 %, and on the vetch 25 %. In the average the component composition of the nutritional ration should consist of: hay – 8–9%, straw – 1,5–2, beet feed – 9–10, vetch-barley silage – 41–46, mixed fodder – 32–33, molasses – 2–2,5 %.

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Published
2019-08-29
How to Cite
Fedak, N., & Dushara, I. (2019). Milk productivity of cows by using in rations during winter-stall period of maintenance vetch-barley silage. Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology, 20(2), 60-66. https://doi.org/10.36359/scivp.2019-20-2.08