Soybean Oil Replacement by Poultry Fat in Broiler Diets: Performance, Nutrient Digestibility, Plasma Lipid Profile and Muscle Fatty Acids Content (original) (raw)
Related papers
Journal of Applied Poultry Research, 2006
Two experiments were conducted to study the performance and carcass quality of broilers in response to varying composition of a diet low in ME, through the supplementation of graded levels of soybean oil. In an initial study, isocaloric (2,965 kcal/kg) and isonitrogenous (21.7%) cornsoybean diets were supplemented with 10, 20, or 30 g/kg of soybean oil. In a second experiment, diets containing ME levels of 2,940 and 3,040 kcal/kg were supplemented with soybean oil levels of 20 or 40 g/kg. In both experiments, supplementation of up to 30 or 40 g of oil/kg of diet resulted in increases of 175 and 120 g (P < 0.05) in BW gain and 97 and 91 g (P ≤ 0.06) in ready-to-cook (RTC) carcass weight at 49 d, respectively. There was a linear decrease (P < 0.05) in percentage deposition of abdominal fat pad only in diets containing 2,965 (Experiment 1) or 2,940 (Experiment 2) kcal of ME/kg with no significant changes in RTC carcass and whole breast or pectoralis major muscle yields and RTC carcass composition. Improvements in production parameters can be achieved in broiler chickens fed a low ME diet through the addition of moderate levels of soybean oil.
International Journal of Poultry Science, 2007
Replacement of dietary saturated fatty acids (SFA) by polyunsaturated fatty acids (PUFA) has been consistently shown to reduce the amount of abdominal fat in broiler chickens, but the metabolic basis for this effect is unknown. It was hypothesized that the feeding of PUFA instead of SFA would induce more heat expenditure, this effect being associated with less deposition of abdominal fat. Broiler chickens were given one of five diets in which the beef tallow component, which is rich in SFA, was replaced by increasing amounts of soybean oil, which is rich in PUFA. The variable fat content of the diets was 3% (w/w). There were neither significant nor systematic effects on weight gain and feed:gain ratio. The amount of body fat was reduced significantly (p<0.05) when about 75% of the tallow was replaced by soybean oil, but there was no further decrease after the incorporation of more soybean oil into the diet. Calculated energy expenditure, either expressed as absolute amount or percentage of intake, trended to enhance but was not significantly affected by the amount of soybean oil in the diet.
An experiment was conducted to evaluate the effect of different levels of dry fat (dried palm oil) as an energy source and two feed forms (mash and pelleted)used in the finisher stage on growth performance, carcass traits, meat quality and blood serum metabolites of broiler chickens. A total of 450 straight-run Lohmann broiler chicks reared in an open-sided house and fed corn-soybean meal based diet with SBM oil as a source of energy from 1-28d of age. On d 28 birds were randomly assigned to 6 dietary treatments of 3 different levels of dry fat (2, 4 and 6%) and 2 forms of feed in 3 x 2 factorial arrangements. Each treatment has 3 replicates with 25 birds each (75/treatment). Experiment lasted for 42d. Processing yields and cut-ups were determined on d 42 in addition to meat quality traits and serum lipid levels. The different% of dietary fat did not improve growth performance with the interaction of fat level and feed form. But it was highly significant (P<0.05) with pelleted feed. Also significant higher difference (P<0.05) was shown in heart% with 2% fat and gizzard% between mash and pelleted feed (1.44 vs. 1.19) and with 2% fat mash feed. Breast% had a higher significant result (P<0.05) in mash feed. Abdominal fat% at 4% fat was significantly lower than 2 and 6%. Different significance were shown in meat analysis such as DM, fat and ash% with the different levels of fat and forms of feed. No significant differences were shown in blood parameters such as LDL, HDL, Cholesterol and Triglycerides.
Effect of Oil Supplemented Diet on Growth Performance and Meat Quality of Broiler Chickens
Advanced Techniques in Biology & Medicine, 2015
The study was carried out to examine how the fatty acid compositions of oils (soybean and palm oils) were reflected in the products and their effects on the growing performance of broilers. Feed consumption, body weight, abdominal fat/carcass yield and fatty acid levels of abdominal fat were determined. During treatment (day 0 to 38), the highest growth rate was recorded in control group while the lowest was in broilers fed a ration containing soybean oil. At the end of trial, the carcass fat content was generally higher in all treated groups compared to the control. Fatty acids composition was found to be greatly influenced by the dietary fat. The highest level of poly-unsaturated fatty acid was obtained from the group fed ration contained soybean oil. Consequently, the compositions of fatty acids from these sorts of animal products presented for human consumption was seen to highly alter depending on animal nutrition.
Effect of lipid sources and inclusion levels in diets for broiler chickens
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2014
This research aimed to evaluate the interactions and effects of 2 and 4% addition levels of poultry slaughterhouse fat (chicken tallow) and soybean oil in diets for broiler chickens. Two experiments were carried out using one-day-old male Cobb chicks in an entirely random design with a 2x2 factorial scheme. In the first experiment, 560 chicks were used to evaluate performance and carcass characteristics. In the second experiment, 100 chicks were used to determine the nutrient digestibility, dietary energy utilization and the lipase and amylase pancreatic activity. There was no interaction between the fat sources and the addition levels for any of the analyzed variables, except for the digestibility coefficient of dry matter (DCDM), which was higher in diets added with 2% soybean oil when compared to chicken tallow. The addition of 4% fat in the diet, regardless of fat source, improved the digestibility coefficient of ethereal extract (DCEE) and increased weight gain and feed intake....
Journal of Applied Animal Research, 2017
This study examined the effect of palm oil (PO), sunflower oil (SO) and their combinations on the growth performance, meat quality, intestinal morphology, ileal digestibility and blood plasma lipid profile of broilers. A total of 144-day-old broiler chicks (Cobb-500) were randomly assigned to basal diets supplemented with either T1, 6% PO (control); T2, 4% PO + 2% SO; T3, 2% PO + 4% SO or T4, 6% SO fed for six weeks. Birds fed SO and the combination of SO and PO had greater (p < .05) body weight gain and feed efficiency compared to control (PO) birds at 1-21 days, and no differences were found among T2-T4 treatments. Fat type had no significant effect on birds' performance at 22-42 days and meat quality. Birds fed SO and the combination of SO and PO had greater (p < .05) duodenum and ilium length as well as higher fat digestibility than the control birds. The control diet raised blood plasma cholesterol, triglycerides, low density lipoprotein and very low density lipoprotein than other treatments. It is concluded that feeding a combination of saturated (PO) and unsaturated (SO) oil sources altered the blood lipid profile, and increased nutrient digestibility and performance without conceding the meat quality in broilers.
British Journal of Nutrition, 2019
A 42-d study was conducted to investigate the effects of an emulsifier supplementation (de-oiled soyabean lecithin (DSL)) of diets with different levels of metabolisable energy (ME) and various sources of fat on growth performance, nutrient digestibility, blood profile and jejunal morphology of broiler chickens. Diets were arranged factorially (2 × 2 × 2) and consisted of two concentrations of ME (normal and low), two fat sources (soyabean oil (SO) and poultry fat (PF)) and two levels of DSL supplementation (0 and 1 g/kg). A total of 800 1-d-old male broiler chickens were assigned to eight treatments with five replicates/treatment. The results showed the supplemental DSL caused improvements in the overall feed conversion ratio, fat digestibility and jejunal villus height:crypt depth ratio, but the magnitude of the responses was greater in the PF-containing diets, resulting in significant fat × DSL interactions (P<0·05). Abdominal fat percentage was also reduced by the PF-containi...
Dietary Soybean Oil, but Not Krabok Oil, Diminishes Abdominal Fat Deposition in Broiler Chickens
International Journal of Poultry Science, 2007
In broiler chickens we tested the hypothesis that dietary fats rich in medium-chain triacylglycerols (MCT) would diminish abdominal fat deposition as do fats rich in polyunsaturated fatty acids (PUFA). Broiler chickens were fed on diets containing either tallow, which is rich in Saturated Fatty Acids (SFA), soybean oil, which is rich in PUFA, or krabok oil, which is rich in MCT. Krabok oil was isolated from the seeds of a tree (Irvingia malayana) grown widely in tropical and subtropical areas. Growth performance was not significantly affected by the type of dietary fat. Possibly, the production of krabok oil for use in broiler rations may become economically relevant. The diets containing either soybean oil or krabok oil showed a significantly higher apparent fat digestibility than did the diet containing tallow. In keeping with earlier investigations, dietary soybean oil versus tallow significantly lowered abdominal fat deposition, the lowering being 21%. The feeding of krabok oil instead of tallow did not affect the weight of abdominal fat, which would lead to rejection of our hypothesis.