Izvorni znanstveni članak
DIETARY FAT IN SOW NUTRITION
Laszlo Babinszky
; PANNON Agricultural University , Faculty of Animal Science, Kaposvar, Hungary
Martin W.A. Verstegen
; Agricultural University Wageningen, The Netherlands
Leo A. den Hartog
; Research Institute for Pig Husbandry, Rosmalen, The Netherlands
Sažetak
A total of 63 primiparous hybrid sows were used in two experiments to study the effect of different fat levels in the lactation diet on the energy balance (EB), neat production and nitrogen baalance (NB) of animals. The experiments were made to measure the efficiency of milk production of sows from metabolizable energy of feed. In experiment 1 the major difference in energy sources in the lactation diets were tapioca starch or animal fat. Fifteen sows received the low-fat diet (starch and fat content: 396; 43 g/kg DM) and 16 sows were fed a moderate fat-level diet (starch and fat content: 286;75 g/kg DM) during 4 weeks of lactation. In experiment 2 cornstarch (200 g/kg) was substituted by animal fat. Sixteen sows were fed during 4 weeks of lactation a low-fat diet (starch and fat content: 418; 37 g/kg DM) and 16 were fed a high-fat diet (starch and fat content: 266; 125 g/kg DM). In both experiments EB and NB of sows were measured between days 18 and 25 of lactation in respiration chambers. lt was established that sows fed a high level of dietary fat produced more milk energy and less heat (P< 0.05). The efficiency of milk production from ME was improved (P< 0.05) with high dietary fat compared to low-fat diet. Animals fed the high fat level had a more negative EB (P< 0.05) when ME intake was controlled. The NB and milk yield were not affected by the dietary fat levels.
Ključne riječi
Hrčak ID:
164936
URI
Datum izdavanja:
23.12.1994.
Posjeta: 570 *