The Effects Of Different Oils On Performance And Meat Quality Of Broilers

The experiments was conducted to study the effects of oils on growth performance,carcass quality, antioxidative ability, serum traits, and fatty acids composition in broilers. Atotal of200broilers, one day age, were assigned to one of four treatment in a completelyrandomized design, and housed in groups of ten with five cages per treatments, includingcontrol (sucrose), fish oil, soybean oil and solid oil powder. broilers were given ad libitumaccess to feed six weeks in two phase(Ⅰ,1to21d; Ⅱ,22to42d). The results show that:0to21d, the ADFI of solid oil powder was higher than control group (P <0.05), and higher thansoybean oil, fish oil significantly (P <0.01). The ADG of solid oil powder was higher thansoybean oil, fish oil, and higher than control (P <0.01); Crude protein digestibility of solid oilpowder was obviously higher than control group (P <0.05). There was no difference in crudeprotein digestibility of solid oil powder treatment, and also in soybean oil, fish oil treatment(P>0.05). The same results in the digestibility of crude fat of control group, solid oil groupand soybean oil group (P>0.05). In22to42d, crude protein digestibility of solid oil powderwas lower than fish oil group significantly (P <0.05), the control and soybean oil treatmentwere not different (P>0.05). Digestibility of crude fat solid oil group was significantly lowerthan control group(P <0.01), while soybean oil group was lower than fish oil group (P <0.05). In the whole of the trial, the feed conversion rate in soybean oil was higher than control(P <0.01) and other treatments. The shear force of broiler’s muscle were decreased andincreased water holding capacity(P>0.05) in solid oil powder, and the pH values in meat washigher(P <0.05). The T-AOC and SOD levels of muscle were increased in number(P>0.05),but the CAT activity was improved significantly (P <0.01), and MDA was lower (P <0.01).The cotent of fatty acid (UFA) in breast muscle were increased, include linoleic acid (C18:2),α-linolenic acid (C18:3(n-3)), arachidonic acid (C20:4(n-6)), and N-6fatty acid (P <0.01).γ-linolenic acid (C18:3(n-6)), n-3fatty acid content in muscle were increaded significantly (P<0.05), and n-6/n-3fatty acid ratio.was increased in number. There were no significantdifference (P>0.05) in total protein (TP), albumin (ALB), globulin (GLO), andalbumin/globulin ratio (ALB/GLO) between control and solid soil powder treatment. thecontent of solid oil powder of immunoglobulin (IgG) was lower than the control (P <0.01).