Comparison of productive and carcass traits of different genotypes

different adult weight. The maternal line is selected for litter size (M; n=31) (adult weight /AW/ 4.0-4.5 kg); the Pannon White (P; n=42; AW: 4.3-4.8 kg) and a large sized (paternal) line are selected for weight gain and for carcass traits (using CT-data). The average daily gain (between the ages of 5 and 11 weeks) of the L rabbits exceeded that of the P and M rabbits by 4.3 and 8.8 g, respectively (P<0.001). 272 and 491 g differences were found for 11 week old body weight. The daily feed intake of the L rabbits was 17 and 23 g higher that that of the P and L group (P<0.001). The feed conversion ratio and the mortality rate of the 3 genotypes did not differ. The highest dressing out percentage (61.3%) was observed by the P rabbits exceeding by 1.1% the M group (P<0.05). The dressing out percentage of the L groups was also favourable (61.1%). Compared to the reference carcass the ratio of the fore part was the highest (26.9%) and the lowest (25.7%) for the L and P groups, respectively. An opposite order was recorded for the ratio of the hind part (L: 37.2%, P: 38.2%). The ratio of the perirenal fat was similar for every genotype. Based on the results it can be concluded that feed intake and final weight are determined by the adult body weight (of the genotypes) (the large sized line showed the most favourable performances), dressing out percentage and ratio of the fore and hind parts are determined by the CT aided selection (P rabbits achieved the best results)

Comparison of performance of growing rabbits originated from different crossing combinations. 1. Production traits.

The aim of the experiment was to study the effect of dam and sire genotypes on the live performance of growing rabbits. The experiment was carried out at the Kaposv\ue1r University. Pannon White and Maternal line does were inseminated with sperm of Pannon White (P), Maternal line (M), Large body line (L), Terminal line of Hycole hybrid (H) or Coloured line (C). M, P and C were medium sized, L and H were large sized genotypes. P and L genotypes were selected for carcass traits by CT. The rabbits were weaned at the age of 5 wk and housed in wire net cages. Daily lighting was 16 h and the temperature 15 to18\ub0C. Rabbits were fed ad libitum a commercial pellet. Water was available ad libitum from nipple drinkers. Examining the dam breed effect, the daily weight gain (+ 5.7 %, P<0.001) and the gain-to-feed ratio (-6.7 %, P=0.004) of the progenies of P does were better, than those of the M does. Examining the sire breed effect, the body weight and the daily weight gain were higher in groups H and L, whereas the progenies of M and C sires were worse. Body weight at 11 wk of age were: H: 2918 g, L: 2793 g, P: 2678 g, C: 2636 g, M: 2585 g (P<0.001). Similar differences were found in daily feed intake. Gain-to-feed ratio did not differ significantly. It was concluded that the live performance of growing rabbits were effected by the adult weight of their parents

EFFECT OF SUPPLEMENTATION OF LINSEED OIL, VITAMIN E AND SELENIUM IN DIET FOR GROWING RABBITS ON PRODUCTIVE AND CARCASS TRAITS

The aim of this experiment was to analyse, how additional dietary linseed oil, vitamin E and selenium affects production and slaughter characteristics of growing rabbits. The basal diet (B) contained 3% sunflower oil, while in the experimental feed (S) this was changed to 3% linseed oil. The vitamin E and selenium content of the two diets was 60 vs. 260 mg/kg and 0.10 vs. 0.46 mg/kg, respectively. Rabbits were fed the B diet from the age of 18 days. One group was fed with the B diet until 11 weeks of age, while the experimental groups were fed the S diets for 1, 2, 3 and 4 weeks before the slaughter (S1, S2, S3 and S4 groups). The body weight gain, the body weight, the feed intake and the feed conversion was identical in all groups. The mortality, as compared to the S1 group (0%) was higher in the in the B group by 13.4% and in the S2 and S3 groups (5.6% and 11.1%, resp.). The dressing out percentage was the lowest in the S1 group (61.7%), while it was significantly higher (P<0.05) in the S2 and S3 groups (62.8 and 62.7%). The proportion of the mid part, as compared to the reference carcass was the lowest in the S1 group and the highest in the S3 (31.3 vs. 32.0%, P<0.05). The proportion of the hind part was the highest in the S1 group (P<0.05) and the lowest in the S2, S3 and S4 groups (38.8 vs. 37.3; 37.2 and 37.1%). The weight of the organs, the proportion of the fore part and that of the perirenal fat was identical in all groups. Comparing these results to the literature, it was found that additional dietary linseed oil, vitamin E and selenium has no or only a slight effect on the production and slaughter characteristics

Body mass index and complications following major gastrointestinal surgery: a prospective, international cohort study and meta-analysis.

AIM: Previous studies reported conflicting evidence on the effects of obesity on outcomes after gastrointestinal surgery. The aims of this study were to explore the relationship of obesity with major postoperative complications in an international cohort and to present a meta-analysis of all available prospective data. METHODS: This prospective, multicentre study included adults undergoing both elective and emergency gastrointestinal resection, reversal of stoma or formation of stoma. The primary end-point was 30-day major complications (Clavien-Dindo Grades III-V). A systematic search was undertaken for studies assessing the relationship between obesity and major complications after gastrointestinal surgery. Individual patient meta-analysis was used to analyse pooled results. RESULTS: This study included 2519 patients across 127 centres, of whom 560 (22.2%) were obese. Unadjusted major complication rates were lower in obese vs normal weight patients (13.0% vs 16.2%, respectively), but this did not reach statistical significance (P = 0.863) on multivariate analysis for patients having surgery for either malignant or benign conditions. Individual patient meta-analysis demonstrated that obese patients undergoing surgery for malignancy were at increased risk of major complications (OR 2.10, 95% CI 1.49-2.96, P < 0.001), whereas obese patients undergoing surgery for benign indications were at decreased risk (OR 0.59, 95% CI 0.46-0.75, P < 0.001) compared to normal weight patients. CONCLUSIONS: In our international data, obesity was not found to be associated with major complications following gastrointestinal surgery. Meta-analysis of available prospective data made a novel finding of obesity being associated with different outcomes depending on whether patients were undergoing surgery for benign or malignant disease