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An experiment with 5 boars from the Danube White breed, raised and fed individually, was conducted in Agricultural Institute - Shumen. The experiment was divided into two sub-periods - a 40-day control period and an experimental period with the same duration. During the control period the animals were fed with combined fodder, containing 16.4% crude protein, 0.80% lysine, 1.3% calcium, 0.68% phosphorus, and during the second sub-period - 15.5% crude protein, 0.85% lysine, 0.63% calcium and 0.45% phosphorus. In the experimental period the boars were fed with the same combined fodder, to which was added 20 g of herbal supplement (nettle and flour from rosehip) per day per boar. From each boar was taken 10 ejaculates during the control period and 11 ejaculates during the experimental period. The following traits were controlled: health condition (daily), volume of ejaculate (ml), density of the semen, which is determined by sperm cell concentration (106/ml), pH, mobility of spermatozoa (%), pathological spermatozoa (%) and survival of spermatozoa (%) after 24, 48, 72 h of storage. The herbs tested do not affect the main quality traits of semen - volume, density and motility, but they do decrease the percentage of agglutination (p = 0.043) and tend to decrease the number of pathological spermatozoa with 14.56%. There is a tendency for lower survival of the 72-nd hour in boars that were given the herbal supplement, which requires additional studies. [ABSTRACT FROM AUTHOR]

A scientific experiment with twenty fattening pigs from the Danube White breed was conducted in Agricultural Institute - Shumen. The animals were separated into two groups of ten, and were fed and reared in individual boxes. The experiment began with an average live weight of 55.300 kg for the control group and 55.800 kg for the trial group. Throughout the rearing period, the animals received compound feed containing 15.5 g Crude Protein (CP), 0.71 g Lysine, 0.67 g calcium and 0.60 g phosphorus. To the feed of the experimental group were added herbal supplements 20 g/per capita daily with the following composition: 50% rosehip flour, 30% nettle leaves, 10% weeds grass, 5% dandelion, 5% hawthorn. The aim of this experiment was to establish the influence of herbal supplements on the productivity, slaughter qualities, chemical composition and physical properties of m. Longissimus dorsi meat in fattening pigs. In conclusion, we established that the herbal supplement has influenced the fat thickness in the shoulder (30.00 mm and 19.40 mm, P=0.027) and back (17.40 mm and 32.00 mm, P=0.016). [ABSTRACT FROM AUTHOR]