Object of work. 1. To review and compare the productivity qualities of the pig breeds bred in Vilnius zone (Lithuanian white, Yorkshyre, Landrace, and Pjetren); 2. To determine the impact of the age, sex, and breed on the pig muscularity. Conclusions. 1. The highest muscularity within the weight limit 95-100 kg makes 53.1 percent, and at the weight of 110-115 kg the muscularity amounts to only 47.5 per cent. While the weight of piglets is increasing, the amount of muscles decreases but the amount of fat increases. It was established that at every 5 kg the fat thickness increases by 1 mm. 2. The weight had the highest influence on the piglets of the Landrace and Pjetren breeds. Based on the research, it can be stated that while the weight increases from 90 kg to 110 kg, the fat layer of the Landrace piglets decreases from 16.1 mm to 14.4 mm, and the fat layer of the Pjetren piglets, on the contrary, increases from 11.1 mm to 14 mm. 3. The highest muscularity is achieved when the age of the Pjetren and Landrace piglets is within 175-190 days, making respectively 59.9 percent and 56.2 percent. The lowest muscularity in Pjetren piglets standing at 58.5 percent is found at the age of 205-220 days. Among Landrace, the lowest muscularity of 52.4 percent is fixed at the age of 220-235 days. 4. The muscularity of the Yorkshire piglets is the highest at the weight level of 85-90 kg by making respectively 55.6 percent and 54.9 percent. While the weight is increasing, as provided by the... [to full text]

The aim of work – to determine the amount of cholesterol in the meat of different pig breeds. The task of research: 1. To analyse the literature about the effect of cholesterol on the human organism and also the peculiarity of concentration in the humans and animals. 2. To determine the amount of cholesterol in the Lithuanian White, Large White, Landrace and Yorkshire meat. Methodology. The samples were used from four different pig breeds: Lithuanian White, Large White, Landrace and Yorkshire of boars (castrates) and gilts. 20 samples were taken from each breed: 10 samples of bears and 10 samples of gilts. Pigs were fattened up at the State Pig Breeding Station in Baisiogala. The amount of cholesterol in pork was determined by using R–Biopharm GmbH company’s „Cholesterin–Testkontroll–Lösung“cholesterol assay control solution made in Germany and in spectrophometrical way, also. Conclusions: 1. The biggest amount of cholesterol was determined in the meat of Yorkshire pigs – 54.3 mg/100g P<0.01 and the smallest amount of cholesterol was found in the meat of Large White pigs–51.0 mg/100 g P<0.01. 2. Almost in all pig breeds the bigger amount of cholesterol was found in the meat of boars 0.1 – 3.7 mg/100 g or 0.2-7 % P>0.05, except Landrace pig breed. 3. According to the data of dispersive analysis breed had more influence P<0.05 than sex P>0.05 on the amount of cholesterol, but however it was dependent on the individual features of animal most.