AGRICULTURAL SCIENCE AND TECHNOLOGY, VOL. 3, No 2, 2011CONTENTS 1 / 2Genetics and Breed<strong>in</strong>gEffect <strong>of</strong> the age at first calv<strong>in</strong>g on test day production traits <strong>in</strong> black-and-white cowsZh. GergovskaEgg production potential <strong>of</strong> Manchurian Golden quail breedersA. GenchevVariability and stability <strong>of</strong> yield and quality <strong>of</strong> gra<strong>in</strong> <strong>of</strong> several bread wheat cultivarsN. Tsenov, I. Stoeva, T. Gubatov, V. PeevaProductive and quality characteristics <strong>of</strong> brown cottonA. Stoilova, I. Saldzhiev , Zh. TerzievSuperovulation and embryo transfer <strong>in</strong> goats by us<strong>in</strong>g PMSG or FSHA. Pampukidou, T. Alifakiotis, M. Avdi, R. Ivanova6773818894Nutrition and PhysiologyEffect <strong>of</strong> dietary am<strong>in</strong>o acid concentration on nitrogen balance <strong>in</strong> PIC hybrid pigsA. Ilchev, G. Ganchev<strong>Comparative</strong> studies on some parameters <strong>of</strong> <strong>in</strong>nate resistance and metabolic pr<strong>of</strong>ile <strong>of</strong> sheep and their <strong>of</strong>fspr<strong>in</strong>gdepend<strong>in</strong>g on the rationB. Bivolarski, Е. Vachkova, S. Laleva, P. Slavova, I. IvanovBehaviour <strong>of</strong> cows <strong>in</strong> milk<strong>in</strong>g parlourI. Varlyakov, V. Radev, Т. Slavov, N. Grigorova98103107Production SystemsFeed<strong>in</strong>g value <strong>of</strong> spr<strong>in</strong>g vetch (Vicia sativa L.) <strong>in</strong>fluenced by preparations with <strong>different</strong> biological effectY. Naydenova, N. Georgieva, I. NikolovaImpact <strong>of</strong> mixtures between retardants and comb<strong>in</strong>ed herbicides on the sow<strong>in</strong>g properties <strong>of</strong> the durum wheatG. DelchevPr<strong>of</strong>ile <strong>of</strong> lavender oil from second harvestG. Zhekova, N. NedkovEssential oil content and composition <strong>of</strong> Thyme “German w<strong>in</strong>ter”G. Zhekova, A. Dzhurmanski, M. NikolovaEffect <strong>of</strong> some agronomy factors on the cook<strong>in</strong>g properties <strong>of</strong> lentil seeds (Lens cul<strong>in</strong>aris Medic L.)G. Milev<strong>Comparative</strong> <strong>study</strong> <strong>of</strong> <strong>different</strong> <strong>varieties</strong> <strong>of</strong> <strong>red</strong> <strong>clover</strong> <strong>in</strong> <strong>Bulgarian</strong> conditionsTs. Mihovski, B. Chourcova, D. MitevStudy on the level <strong>of</strong> generated vacuum <strong>in</strong> the teat cup milk<strong>in</strong>g chamber as a factor for assess<strong>in</strong>g l<strong>in</strong>er suitabilityV. Vlashev, G. D<strong>in</strong>eva112117121123126130134
CONTENTS2 / 2Agriculture and EnvironmentContent <strong>of</strong> heavy metals and metalloids <strong>in</strong> bees and bee products from areas with <strong>different</strong> degree <strong>of</strong>anthropogenic impactI. Zhelyazkova, S. Atanasova, V. Barakova, G. MihaylovaSpecies composition <strong>of</strong> weeds <strong>in</strong> wheat and barleyM. Georgiev, D. Pavlov, G. Beev, M. Gerdzikova, R. BazitovVariability <strong>of</strong> some biologically active compounds <strong>of</strong> Tribulus terrestris L.M. Nikolova, A. Ivanova, I. Lazarova, D. Peev, N. ValyovskaOrganic matter status <strong>in</strong> reclaimed Technosols <strong>of</strong> BulgariaV. Tsolova, M. Banov136143150155Product Quality and SafetyUse <strong>of</strong> near<strong>in</strong>fra<strong>red</strong> spectroscopy technology with a remote reflectance fibre-optic probe for p<strong>red</strong>ict<strong>in</strong>g <strong>of</strong> traceelements contents <strong>in</strong> tobaccoL. Dospatliev, S. AtanassovaOccurrence and distribution <strong>of</strong> Fusarium species <strong>in</strong> wheat gra<strong>in</strong>G. Beev, S. Denev, D. PavlovInfluence the extraction acidity level on the amount and chemical composition <strong>of</strong> essential oil from Rosadamascena Mill.A. DobrevaDistribution <strong>of</strong> moisture <strong>in</strong> the soil pr<strong>of</strong>ile <strong>in</strong> terms <strong>of</strong> two soil typesA. Stoyanova, M. TodorovaSlaughter<strong>in</strong>g analysis and chemical composition <strong>of</strong> rabbit meatA.Kuzelov, E. Atanasova, T. AngelkovaGra<strong>in</strong> sample quality assessment us<strong>in</strong>g Intechn and Unscrambler platformsM. Mladenov, Ts. Draganova, R. Tsenkova160165169172176179