The effects of different fat sources used in broiler rations on performance, abdominal fat accumulation and fat digestibility

In the present study the effects of diets prepared on ail isocaloric and isonitrogenic basis and supplemented with,',Ullllo k er oil, sunflo vcr acid oil, of- animal tullo v in rates of' 517c i,on live veight gain, feed intake, feed efficiency, carcass yield, abdominal fat ratios, and blood parameters vere investigated in broilers. Animals faeces ere collected a,, NA"ell to arialyse digestibility of fats. For the experiment 120 broiler chicks divided into 3 oroup,, 'by random and maintained in suitable Conditions lot- breedirI2 for 42 days vere used. In P ' and 2"d \veeks a significant difference in Ike sleigh(.,vas found between the group fed sunflower oil 102.7.1300.6 g) and the group fed animal tallo" (96.3, 279.5 glt p 0.05). Abdominal fat percentages verc I.5Y-1c. 1.2 1 1 and 2.1017c irt sunflmver oil, sunflo ver acid oil, animal tallow groups. respectively, and the difference.,, among group-, vere significant (p < 0.05). Digestibility of fat k asi highest in -roup I for the period 2219 to 28'i"day (I 76.5: 11 73.7; IIIc75.517c) and for the period 36'h to 42'd day (1 70.8: 11 70.3: Ill 70.0%). Biochemical parameters analyzed in set-Lim samples taken at 3`1 and 6' ' ",eeks of the study vere significantly differclit bet"veen groups except for total protein. albumin, 1-lohUline, i alb/glob, glutaiiiie-oxaloacetic transarninase (GOT). and gl U tarnic-pyruvic acid transarninase (GPT: p < 0.05). Total cholesterol (1111 184.3, 162.5-. 11 147.8. 116.6. 1 13 1.9;:102.4 nio/dI) and triglyceride (111 102.8, 89A 11 76.2, 66.3: 1 79.2, 62.5 m-/dI) levels "we hi-her in the tallo v group than in the other groups. Gainina glutainic transferase (GGT) levels k ere hi.-her in the sunflower oil Uroup than in the other groups (I 18.3 25.4 11 16.0, 21.9 III 17.4 23.5 U/L). The result of' this study revealed that the use of different fat source,,, in broiler diets had no negative effect on broiler performance, abdominal fat rate, Lind blood parameters

Determination of the metabolizable energy (ME) and net energy lactation (NEL) contents of some feeds in the Marmara Region by in vitro gas technique

In this study, chemical composition and energy values of some forages, raw materials and commercial feeds commonly used in the Marmara Region for ruminants were determined. Samples of sunflower meal, barley, wheat, oat, corn, wheat bran, grass hay, vetch hay, alfalfa hay and compound feeds were collected for evaluation

Effect of different dietary fat sources and their levels on performance of broilers

The aim of this study was to determine the effect of feeding various fat sources (fish oil, linseed oil, sunflower oil and soy oil) and different fat inclusion levels (2, 4, 6 and 8%) on body weight gain, feed consumption and feed efficiency of broiler chicks

Effect of dietary fat source on n-3 fatty acid enrichment of broiler meat

Scientific research has shown that there is a relationship between the amount and composition of animal fat in the food and cardiovascular and other diseases in humans. The fatty acid composition of broiler meat can be modified by dietary fat sources. In recent years, one of most important effect of fats to performance and the quality of meat is that related to the ratio of omega 6 (n-6)/omega 3 (n-3) fatty acids in the diet. In poultry diets with fishmeal, fish oil or oil derived from vegetable source increase the content of polyunsaturated fatty acids (PUFA, particularly with n-3 fatty acids) in meat. This study was conducted to observe the effects of different fat sources on accumulation of different fatty acids and on the ratio of n-6 to n-3 fatty acids in broiler meat

Effects of probiotic and antibiotic on performance of broilers

Three experiments were conducted to determine the effects of a probiotic combination (L. plantarum, L. delbrueckii subsp. bulgaricus, L. acidophilus, L. rhamnosus, Bifidobacterium bifidum, Streptococcus salivarius subsp. thermophilus, Enterococcus faecium, Aspergillus oryza and Candida pintolopesii cultures, 3 x 10(11) CFU/kg, starter; 2 x 10(11) CFU/kg, grower) and/or antibiotic (zinc bacitracin, 75 ppm) on the body weight gain and feed efficiency of broiler-type chicks

Effects of different dietary oil sources on fatty acid composition and malondialdehyde levels of thigh meat in broiler chickens

The aim of the experiment was to determine the effect of feeding various fat sources (fish oil, linseed oil, sunflower oil and soy oil) and different oil levels (2, 4 and 8%) on the fatty acid composition of chicken muscles and, to raise the content of long chain n-3 PUFA (EPA and DHA) to decrease the n-6/n-3 ratio in broiler carcasses. Furthermore, the effects of the different fatty acid sources on oxidation stability of broiler meat as indicated by malondial-dehyte (MDA) levels should be investigated