THE INFLUENCE OF IMPROVED FEED ON THE PRODUCTIVE PERFORMANCES OF PREGNANT AND LACTATING SOWS

The profitability of breeding sows is determined by their rational feeding, knowing that in the pig cost price of the delivered feed represents approx. 70-80%. Consequently, achieving efficient and consistent productions in pig farms depends on the quantitative and qualitative assurance of feeds, which are used both to ensure their own vital functions and to increase their production. For efficient feeding of pregnant and lactating sows, the morpho-physiological features of this species should be taken into account, testing the use of improved herbaceous species such as Turda maize, 21-1G barley, Tudor peas. The weight of pregnant sows and the consumption of compound feeds were influenced by the digestibility of nutrients, mainly by protein. During the lactation period the consumption of compound feeds of sows varied according to the number of piglets and the body weight of the sows.