Influence of precipitation during harvesting on the winter wheat yield Mladenov, N., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia); Hristov, N., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia); Đurić, V., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia) ...
2011
Conference Proceeding
Two genotype of sheep have been utilized in the conduct of the experiment composed of 60 ewes from Pirot x Virtemberg as genotype 1 and 60 ewes of Improved Pirot as genotype 2. All the ewes were ...reared under identical conditions and without any differences in nutrition and management during the whole period under study. The collection of Milk sampling was done in morning and evening during periods (1, 2, 3) of lactation duration. The average lactation duration and average total milk of the two genotypes were very close and has a minimal difference of 0.467 day and 1.562 kg, in favor of genotype 2. The differences between genotypes were not significant (P>0,05). Regarding physical and chemical properties of milk for both genotypes, the difference were very minimal such as follows; viscosity Pa x s - 0.006, electrical conductivity Ω – 0.018, density kg/m3 -0,001, freezing, t 0C - 0.013, LD number – 0.028 total solids, % – 0.014, fat,% - 0,026, protein,% - 0.085, lactose,% - 0.038, ash,% - 0,021, acidity, 0SH – 0.209. The results indicated that the properties of milk for both genotypes were very near to each other. It can be interpreted that the breeds utilized in the experiment were comparable due to similar characteristics perhaps. The effect of genotype was very significant only for the % protein of the milk. The lactation periods were highly significant in all physical and chemical properties of milk.
Production of food, food safety of a country, production of raw materials (as inputs for other sectors), foreign trade, social demographic and other aspects are determining, among others, the ...multiplied significance of agriculture for socio economic development of the Republic of Serbia. Main problems Serbian agriculture is faced with are result of restrictions created in the conditions of centralized planning, difficulties in the development in the passed 15 years and difficulties in adapting to the market economy. Transition of agriculture to market conditions is followed by significant development of trade. Liberalization process produced trade concessions that enabled enhancing of trade. In transitional period, with the continual export growth, in spite of very stable imports, trade balance is continually improving. Serbian foreign trade balance for agricultural and food products in 2006 indicate that the value of realized export was 1265.4 million USD, thus recording a growth of 18.2% when compared to the results in 2005, and the share in total export of country of 19.7%.These indicators of dynamic changes in the foreign trade in agricultural and food products for these two years are based on data which include Montenegro as well.
The aim of this examination was to test the influence of phytase added into diets for fattening chickens, at different levels of mineral sources of phosphorus with phytase addition to the yield and ...share of edible and comparion products of chickens slaughtering. For experiment the chickens of Arbor Acres strain were used. The results of the examinations show that 0-III group which gained per diet enzyme phytase with decreased level of mineral sources of phosphorus, accomplished better total yield of edible comparion products of slaughtering. Also, better body weights and dressing percentages of spent hens are accomplished so we consider that phytase enzyme should be added into the diets for chicken, because of all these mentioned useful facts in this work.
Effect of mating method, sex and birth type on growth of lambs Ilić, Z. (Faculty of Agronomy, Priština-Lešak (Serbia)); Jevtić-Vukmirović, A. (High School Agricultural Food, Prokuplje (Serbia)); Petrović, P. M. (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) ...
2013
Publication
Estrus synchronization methods was use to control the reproductive traits of sheep, as well as bringing more females at the same stage of estrus and ovulation. According to the points mentioned ...above, the aim of the present study was to investigate and compare mating method and influence of fixed factors on birth and weaning weight of lambs. Statistical analysis showed that exist difference in the body weights between genotypes of lambs. In the first group, the difference in weight of lambs at birth, regardless of mating method was not significant (P> 0.05), while in the second group, the difference was slightly significant (P <0.05). As for the birth type,sex and within the same genotype, there was a statistical significance (P <0.05) between singles obtained naturally, between the triplets obtained naturally and between triplets received hormonal method. All the differences between body weight at 30 days (mating method, sex and birth type under the same genotype) were statistically significant (P <0.05).The determined differences in the body weights at 60 days (sex, mating method and type of birth under the same genotype) were statistically significant (P <0.05). The results showed that the differences (mating method, sex and type of birth under the same genotype) were statistically significant (P <0.05), except in between body weight at 90 days in twins among two genotypes obtained by natural method, which were not statistically significant (P> 0.05).
