Eureka! Institutional Repository

The domestication of the pigs dates back to the 7th century BC. Over time, high- yielding breeds were created. With the development of genetic improvement, the industry has evolved rapidly. Farms have been intensified and productive yields have been maximized.       Productivity does not depend only on genotypic characteristics. In order for the best odds to be attributed to the genotype, an appropriate environment must be ensured. Farm management is a difficult and very important issue. The basis of the management is the environment of the pigs, which consists of the social environment (behavior of pigs between them and the care of the animals from people), the climate environment (atmospheric living conditions) and facilities - equipment (living space). Productivity is reflected by reproduction yields, which is measured by the following indicators: number of births per sow per year, number of weaned piglets per sow per year, birth rate, number of non-productive days of sows, weaning interval - re- emergence of estrus, age entry of young sows in breeding, number of born live piglets per birth, number of weaned piglets during sowing life, pig weight during their first day of life and breastfeeding duration. With the help of a pig farm, which is located in North Greece, the duration of the sowing of sows was studied. From this, data from 171 sows were collected. The statistical analysis was done with Office Excel 2013 for Windows. The results of the survey were as follows: the best sows are those who face late and very late weaning and give the largest groups of weaned piglets, adoptions are an important factor for homogeneity and achieving satisfactory weaning sizes and, finally, with good management, the rate of complications is low during lactation.