In the conditions of the Republic of Belarus there was studied the influence of methods and means of spot heating and localization of warmth on indexes of microclimate in piglet breeding houses and resting area of piglets and their growth parameters. In course of the study there taken into consideration the indexes of an average temperature on piglet resting area housings; atmosphere relative humidity, air velocity, content of carbon dioxide, content of hydrogen nitride in the housing and resting areas of piglets. Research results of microclimate of swine breeding areas and resting areas of piglets under different means and methods of heating and warmth localization showed that the it was the most efficient to add for the local heating in the first three weeks of suckling period the glow-discharge tubes or in suckling period or weanling periods - the heated floors; and in suckling period - brooders in the form of tops with shields.

In the conditions of the Republic of Belarus there was realized a scientific and economic experiment on studying the influence of a multi-enzyme feed additive on productivity, viability, growth and development of calves. The multi-enzyme additive contained in its formula xilanaza; glucanase; cellulose; and dolomite (as a filling agent). It was determined that young growth of cattle which were fed with the multi-enzyme additive in dose 1 gram per 6 kilogram of milk by the end of the experiment had a live weight gain on 13,6% higher than in a control group. Calves which were fed with the additive were characterized by more stretched constitution, had well developed thorax and good development of skeleton in comparison with analogues from the control group.

Research of a pancreas of geese in course of different age-specific periods was realized in the conditions of the Republic of Belarus. Ecological features of water fowl inhabitance, prevalence of phytogenous forages in a diet of led in first two life decades to rapid growth of body weight and pancreas which was capable to adapt an organism to new conditions of existence. The subsequent growth and differentiating processes in a pancreas of geese showed direct correlative dependence on the basic physiological states of their organism (plumage, a moult, puberty, egg production efficiency). By the beginning of egg production (6 months) the basic structural components of secretory parts of gland of geese reached a rather developed condition, but their full morphological and functional maturity occurred by 2-year-old age, possibly, because of a long reproductive period of life. | Проведено исследование поджелудочной железы у гусей в разные возрастные периоды. Экологические особенности среды обитания водоплавающих птиц, преобладание в рационе кормов растительного происхождения приводят в первые две декады жизни к бурному росту массы тела животных и поджелудочной железы, способной адаптировать организм к новым условиям существования. Последующие ростовые и дифференцировочные процессы в поджелудочной железе гусей проявляют прямую коррелятивную зависимость от основных физиологических состояний их организма (оперение, линька, половое созревание, яйценосная продуктивность). К началу яйценоскости (6 месяцев) основные структурные компоненты секреторных отделов железы гусей достигают достаточно развитого состояния, но их полная морфофункциональная зрелость наступает к 2-летнему возрасту животных, вероятно, из-за продолжительного репродуктивного периода жизни.

In the conditions of the Republic of Belarus there was studied the nonspecific resistance of lambs of Latvian Black Face breed during the colostrum and milk fed period of their growth development. In course of the experiment there were used 10 newborn lambs. Analysis of resistance was realized in accordance with a scheme: before colostral milk sucking; in 6, 12, 24 hours; in 3, 7, 14, 21 days; in 1, 2 and 3 months after birth. In lambs during the colostrum and milk fed period of growth there were marked two critical periods, which were characterized by low indicators of resistance: before colostral milk uptake and at 7-21 day-old age. Increasing of leukocytes, bactericidal, lysozymic activity of blood serum, phagocytal activity of leukocytes, crude protein and antibodies in the first days of lamb life took place due to their entrance in blood with colostral milk, just because at this time the intestines wall possessed ability to transit in native condition the antibodies, enzymes, and leukocytes. At 7-21 day-old age in connection with reduction of these factors quantity of in colostral milk, and also due to reduction of intestines capacity, their was stated that their entrance in blood of newborn lambs decreased, but at 3 month old age of lambs there were stated to form internal protective factors of resistance because of which their quantity in blood started to increase.

In the conditions of the Republic of Belarus there was studied the influence of methods and means of spot heating and localization of warmth on growth, viability and physiological status of piglets. In course of realization of the experiment there was issued a task of scientific substantiation of application of brooders of different construction and proposition of the most optimal method of microclimate formation in resting area of piglets for the increasing of their growth and viability, and improvement of physiological state. Research results showed that the highest indexes of growth and viability, and intensity of metabolic processes in piglets were obtained after the combined application in course of the first three weeks of suckling period of filament lamps and heated floors and brooders in the form of tops with shields, and at a later stage – only brooders of this construction in comparison with animals which were in course of a suckling period under the infrared radiation lamps or at the space-heating floor.