The effects of sugar beet pulp silage (PBPS) added with vinasse in heavy pig production
2000
Martelli, G. | Sardi, L. | Parisini, P. | Scipioni, R. (Bologna Univ. (Italy). Dipartimento di Morfofisiologia Veterinaria e Produzioni Animali)
Sixty Landrace x Large White pigs of the initial live weight of about 55 kg were divided in three groups fed as follows: T1, control group, in which pigs were fed a traditional diet based on cereals and soybean meal, T2 and T3 in which pressed beet pulp silage (PBPS) added with 5% vinasse replaced barley for 10% and 20% on DM basis, respectively. Pigs were fed at the rate of 9% of their metabolic BW up to a maximum of 3.2 kg per pig per day. Animals were regularly weighed and feed intake was recorded to calculate average daily gain and feed conversion rate. Blood samples were taken to determine urea nitrogen content. Pigs were slaughtered at around 160 kg BW and the main qualitative parameters of carcasses (dressing out percentage, muscle percentage, lean and fatty cuts yield) and meat (PH and colour) were collected. Fatty acid relative composition of ham subcutaneous fat was determined. Dietary treatment did not significantly influence either growing performances or post mortem parameters, although pigs on T3 diet (20% PBPS) ate less food (2,345 g/d vs 2,430 g/d group T1 vs 2,451 g/d group T2; P0.05) and showed some tendencial (P0.10) modifications such as an improvement of lean percentage and of lean to fatty cuts ratio. No differences either on blood urea or on fatty acid composition of ham subcutaneous fat were observed
显示更多 [+] 显示较少 [-]