This experiment was conducted to investigate the effects of supplementation of corn oil and lard on the growth and slaughter performance, and serum biochemical indices in broilers. Ninety 1-day-old female broilers were randomly assigned to three treatments (six replicates per treatment with five broilers per replicate). The control diet had no oil, and the treatment diets contained 2.5% corn oil and 2.5% lard, respectively. They were slaughtered on the 42nd day. The results showed as follows: 1) there were no significant differences in the feed intake, body weight gain, and the weight of pectoral muscle and leg muscle of broilers between corn oil group and lard group （P>0.05）, but all of these except for pectoral muscle weight in corn oil group were significantly higher than those in control group （P<0.05）. Subcutaneous fat thickness of broilers in lard group was significantly higher than that in corn oil group and lard group （P<0.05）. There was no significant difference in feed/gain among all groups （P>0.05）. 2） There were no significant differences in the contents of total protein, albumin, globulin and urea, and the activities of gamma-glutamyltransferase and glutamic-oxaloacetic transaminase in serum of broilers among all groups （P>0.05）. Serum uric acid content of broilers in corn oil group and lard group was significantly lower than that in control group （P<0.01）. Compared with control group, the contents of total cholesterol （P<0.01）, triglyceride （P<0.01）, low density lipoprotein cholesterol （P<0.05） and glucose （P<0.01） in serum of broilers in corn oil group were significantly decreased, but alanine transaminase activity was significantly increased （P<0.05）. It suggests that there are no significant differences in growth and muscle performance of broilers between corn oil group and lard group, but feed intake and body weight gain of broilers fed the diets without oil will be significantly decreased, and serum uric acid will be significantly increased; corn oil can increase serum alanine transaminase activity and decrease the contents of blood lipid and glucose, and lard can increase subcutaneous fat thickness.［Chinese Journal of Animal Nutrition, 2011, 23（7）：1101 -1108］
CHEN Wen,GUO Yuming,HUANG Yanqun
. Effects of Supplementation of Corn Oil and Lard on Growth and Slaughter Performance, and Serum Biochemical Indices in Broilers[J]. Chinese Journal of Animal Nutrition, 2011
, 23(07)
: 1101
-1108
.
DOI: 10.3969/j.issn.1006-267x.2011.07.006
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