Research on the breed influence and parity on chemical composition of sow milk
1996
Balan, L. | Miculete, D. | Gheorghe, V. | Simionescu, D. (S.C. ROMSUINTEST S.A., Peris (Romania))
The investigation of physico-chemical composition of sow milk was carried out on 24 primiparous and multiparous sows belonging to LW and L breeds. The samples were collected during farrowing (colostrum) and in the 1st, 7th, 21st and 36th day of lactation. The results have shown that: 1. The density, pH, fat, lactose and calcium content have lower values at colostrum compared to milk. Concerning the percentage of dry matter and protein, these have higher values at colostrum instead of milk; 2. During lactation the following changes take place: - a slight increase of milk density and pH and also an increase of mineral content. - almost a double increase of fat content (from 4 per cent to 7-8 per cent) and a decreasing with 60-70 per cent of protein content. - a slight decreasing of dry matter percentage from 22-25 per cent to 18-21 per cent 3. The breed and parity influenced in a little measure the determined parameters of density and mineral elements. 4. The dry matter, protein and fat content was slightly superior for LW compared to L and at multiparous compared to primiparous sows.
显示更多 [+] 显示较少 [-]