THE IMPACT OF A FEED ADDITIVE MIXTURE CONSISTING OF YEAST CELL WALLS AND BUTYRIC ACID ESTERS ON FATTENING PIG CARCASSES AND MEAT QUALITY

Nowadays, numerous countries are researching feed additives utilisation in pig feed to improve the feed\u27s biological value, increase pig productivity, and increase disease resistance, enhancing pork quality. So, the aim of this study was to determine the influence of a feed additive mixture consisting of yeast cell walls and butyric acid esters on the quality of carcasses and pork from fattening pigs. The feeding test was performed with 32 fattening pigs (65-d-old crossbreeds), which were divided into 2 groups with 4 replicate pens: the control group was fed standard compound feed; the experimental group was fed standard compound feed + 2 kg/t feed additive mixture containing yeast cell walls and butyric acid esters. Pig productivity, muscularity, and fat tissue percentages were assessed during the test. At the end of the trial (179-d-old), 5 fattening pigs were randomly selected from each group and slaughtered; pork carcasses and physico-chemical features were evaluated. The slaughter data of fattening pigs revealed that the carcass weight, carcass yield, longest back muscle area, bacon, and carcass half lengths of the fattening pigs in the experimental group were higher by 1% and 2% compared to the control. However, the feed additive mixture had no significant effect on slaughter data or pork physical or chemical features since no significant difference between the experimental and control groups was discovered (P>0.05). The only indicator of chemical composition that was significantly affected was the ash, which was found to be 0.22% higher in the experimental group compared to the control (P<0.05). According to the obtained results, it can be concluded that the additive, consisting of yeast cell walls and butyric acid esters, used in fattening pigs feed, has no influence on the quality of pork, but it also does not degrade it

The Influence of chelators, Zn sulphate and Silicic acid on pigs for fattening productivity and meat quality

The objective of this study was to investigate the influence of special additives such as chelators, zinc sulphate and cilicic acid on productivity parameters, carcass characteristics and meat quality of pigs for fattening. The test started with 40 days old fattening pigs (mongrel (mother) and Yorkshire (father)) and lasted up to 156 days of age. During the fattening period pigs were divided into 2 groups (control and experimental) after 4 replicates (total of 8 pens). Each group was followed by 16 fattening pigs. The pigs were fed for 16 weeks’ ad libitum with a standard wheat-barley-soybean meal compound (Control group) supplemented with chelators, zinc sulphate and silicic acid (dosage 2 kg/t of feed, Experimental group). Meat traits in live pigs were measured by ultrasonic equipment Piglog 105. The samples for the analysis of physical and chemical properties, cholesterol content were taken The results of the present study suggest that supplementation of chelators, zinc sulphate and silicic acid during all experimental period tends to positively affect on average daily gain and feed conversion ratio of pigs for fattening (P < 0.05). Pigs evaluation with Piglog 105 showed that thickness of fat in the first and second point was by 4% and 3% respectively higher in comparison to the Control group (P< 0.05). Carcass weight, yield and length, also thickness of fat showed no significant difference among the groups. The water holding capacity of meat in Experimental group was by 5.28% lower and tenderness – by 12% lower compared with Control group (P < 0.05). According to the pig meat chemical composition of the treatment groups, a statistically significant difference among it was not determined. Cholesterol concentration in muscles of pigs for fattening fed diets supplemented with chelators, zinc sulphate and silicic acid was lower by 7.93mg/100 g of muscle in comparison to the Control group. These results sug[...]

The Influence of chelators, Zn sulphate and Silicic acid on pigs for fattening productivity and meat quality

The objective of this study was to investigate the influence of special additives such as chelators, zinc sulphate and cilicic acid on productivity parameters, carcass characteristics and meat quality of pigs for fattening. The test started with 40 days old fattening pigs (mongrel (mother) and Yorkshire (father)) and lasted up to 156 days of age. During the fattening period pigs were divided into 2 groups (control and experimental) after 4 replicates (total of 8 pens). Each group was followed by 16 fattening pigs. The pigs were fed for 16 weeks’ ad libitum with a standard wheat-barley-soybean meal compound (Control group) supplemented with chelators, zinc sulphate and silicic acid (dosage 2 kg/t of feed, Experimental group). Meat traits in live pigs were measured by ultrasonic equipment Piglog 105. The samples for the analysis of physical and chemical properties, cholesterol content were taken The results of the present study suggest that supplementation of chelators, zinc sulphate and silicic acid during all experimental period tends to positively affect on average daily gain and feed conversion ratio of pigs for fattening (P < 0.05). Pigs evaluation with Piglog 105 showed that thickness of fat in the first and second point was by 4% and 3% respectively higher in comparison to the Control group (P< 0.05). Carcass weight, yield and length, also thickness of fat showed no significant difference among the groups. The water holding capacity of meat in Experimental group was by 5.28% lower and tenderness – by 12% lower compared with Control group (P < 0.05). According to the pig meat chemical composition of the treatment groups, a statistically significant difference among it was not determined. Cholesterol concentration in muscles of pigs for fattening fed diets supplemented with chelators, zinc sulphate and silicic acid was lower by 7.93mg/100 g of muscle in comparison to the Control group. These results sug[...]

The Influence of newest generation butyrate combined with acids, medium chain fatty acids and plant extract on the performance and physiological state of laying hens

The aim of the present study was to investigate the effect of butyrate, acids, medium-chain fatty acids and plant extract mixture on performance, blood and gastrointestinal tract characteristics of laying hens’. For the period of 8 weeks, 24 Hisex Brown laying hens were randomly assigned to 2 dietary treatments: 1) control wheat-corn-soybean meal based diet (Control group), 2) control diet supplemented with the mixture of butyrate, acids, medium chain fatty acids and plant extract (Lumance®) at the level of 1.5 g/kg of feed (Experimental group). Hens were fed with a crumbled diet at 125 g per day. Housing and feeding conditions were the same for all groups and met the requirements of growth for laying hens of Hisex Brown strain. In the blood serum total protein, bilirubin, cholesterol, DTL- and MTL- cholesterol, triglycerides, glucose, GGT, GOT, GPT, alkaline phosphatase, alpha amylase, contents of c-reactive protein, uric acid, and lipase were analyzed. Development of intestines and internal organs (intestinal length, intestinal weight, the weight of glandular and muscular stomach, pancreas, heart, and liver) were determined. The concentration of short chain fatty acids in caecal content was measured using the method of HPLC. The results of the present study showed that 1.5 g/kg supplementation of feed additive affected egg production and feed conversion ratio for the production of 1 kg of egg mass. Dietary supplementation of analyzed additive in the diets increased the concentration of triglycerides, GOT, alkaline phosphatase and decreased uric acid content compared with the control group (P<0.05). No significant difference for others blood indices in comparison to the control was observed. The addition of feed additives in laying hens’ diets increased intestinal weight by 11% and liver weight by 14% compared with the control group (P<0.05). The short chain fatty acids (propionic, acetic and butyric aci[...]