Effect of Different Oils on Growth Performance and Carcass Traits in Growing Rabbits

Abstract

The present study was conducted to evaluate the effect of diet supplemented with different oils on growth performance carcass of growing rabbits. Total numbers of 50 weaned male growing New Zealand White rabbits, of four weeks old with an average initial body weight 455.6 g were used in this study. Rabbits were randomly distributed into five comparable groups of 10 growing rabbit. The animals were housed in cages provided with continues feeder and automatic water facilities during the experimental period, which lasted for 6 weeks. Rabbit groups were fed commercial rabbit diet without additive (control, group 1 ), with 10 g canola oil/kg diet (group 2), with 10 g rice barn oil /kg diet (group 3), with 10 g virgin olive oil /kg diet (group 4) with 10 g sunflower oil /kg diet (group 5). Growth was assessed by measuring body weight gain (BWG). At 10 weeks of age three animals from each group were slaughtered for carcass evaluation. Results showed that the effect of different diet supplemented oils on body weight gain was significant. The highest improvement in average daily gains during the study was 13.8% in Canola oil group as compared with control group followed by 11.3 %, 8.5 % and 3.9 % for Virgin olive oil, Rice barn oil and Sunflower oil respectively, as compared with control group. Treatment with different diet supplemented oils significantly increased the dressing percentage. The meat contents of vitamins E and A were enhancement by oil supplementation. Plasma cholesterol and Triglyceride were lowered significantly in oils supplemented groups as compared with control group. The differences between groups were significant in high-density-lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C). Physical meat characteristics, as moisture and ash were nearly similar for the different groups. Virgin olive oil group showed significantly (P<0.05) highest protein content followed by canola oil, rice barn oil and sunflower oil while control group had the lowest protein content. Control group showed significantly (P<0.05) highest ether extract content, however virgin olive oil had the lowest content.

Further Study on Toxicity of the Permissible (Very Low) Level of Ochratoxin A with and without Essential Oils on Rats

“…Most of the obtained blood values are around the normal values given by many authors, e.g. Merck (1976), Abdelhamid (1989 and1990), Abdelhamid and Saleh (2000), Abdelhamid et al (1999b), Sadek (2011), Abdel-Khalek et al (2012), Abu El-Hamd et al (2013 and El-Medany et al (2013). Since Merck (1976) gave the normal values for Wistar rats as ca.…”

Spiny-Cheek Crayfish, Faxonius limosus (Rafinesque, 1817), as an Alternative Food Source

“…Moreover, the essential amino acid index (EAAI) calculated for the abdomen and chelae meat of F. limosus was 151.53% and 145.94%, respectively, and it was higher than that for the reference standard protein ( Table 4 ). The EAAI values in this study are higher comparing with the meat of several species, e.g., 114% in lagoon crab Calinectes latimanus [ 77 ], 89% in innards N. maculatus [ 78 ], 50.4–82.9% in chicken [ 75 , 79 ], 80–81% in beef, pork, and mutton [ 75 ], and 128–136% in freshwater fish [ 80 ], similar as in rabbit meat—153% [ 76 ], and lower than that in sea bass ( Dicentrarchus labrax ) fillets—266% [ 81 ]. The level of protein, but also the CS and EAAI in the abdomen and chelae, showed that F. limosus meat is highly digestible and has a well-balanced amino acid composition.…”

“…Our study showed that the meat of spiny-cheek crayfish had a better nutritional protein quality in comparison with the FAO/WHO/UNU standards [ 25 ]. By analysing and recalculating the results obtained by other authors, it can be noted that the meat of cattle, pig, sheep [ 75 ], and rabbit [ 76 ] has higher CS values for His, Ile, Lou, Thr, and Val, similar CS values for Lys and Phe+Tyr, and lower CS values for Tyr compared with the meat of spiny-cheek crayfish. Moreover, the essential amino acid index (EAAI) calculated for the abdomen and chelae meat of F. limosus was 151.53% and 145.94%, respectively, and it was higher than that for the reference standard protein ( Table 4 ).…”

Evaluation of Substuting the Sieving Wastes of the Egyptian Clover's Seeds Instead of Soya Bean in the Diet of Flan-Line Rabbits.

“…Ragab et al (2013) analyzed rabbit's meat which contained 18.9-21.3 % CP, 1.90-2.79 % EE, and 1.52-1.62 % ash on fresh weight basis. Lastly, El-Medany et al (2013) calculated the percentages of different carcass' parts of rabbits as 61.6-64.1 for dressing, 15.6-16.4 fore part, 12. 0-12.6 middle part, 19.0-20.1 hind part, 10.0-10.3 head, 3.0-3.1 liver, 0.71-0.82 kidneys, 0.32-0.36 heart, and 0.83-0.88 lungs.…”