Abstract
The objective of the present study was to evaluate the effects of hydroxylated lecithin on growth performance, serum enzyme activity, hormone levels related to lipid metabolism and meat quality in Jiangnan White goslings. Six hundred 1-day-old goslings were randomly divided into five treatments with six replicates and 20 for each replicate. The control group (CG) was fed the basal diet, while the experimental group was fed the basal diet with 50, 100, 200 mg/kg hydroxylated lecithin and 100 mg/kg soy lecithin (HLG50, HLG100, HLG200, and LG100, respectively) in the form of powder. Feed and water were provided ad libitum for 32 days. Compared with the CG, (a) the average daily feed intake was higher (P < 0.05) in HLG100, the final body weight and average daily gain were higher (P < 0.05), and the feed conversion ratio was lower in the HLG200; (b) the alanine aminotransferase, malate dehydrogenase, leptin, glucagon, thyroid hormone, Triiodothyronine contents in the HLG200 were lower (P < 0.05); (c) The breast muscle water holding capacity was higher (P < 0.05) in groups with hydroxylated lecithin, the breast muscle shear force and fiber diameter were lower (P < 0.05) in the HLG100; (d) the inositic acid, intramuscular fat, phospholipid contents were higher (P < 0.05), the triglyceride content was lower (P < 0.05) in HLG100 of the breast muscle; (e) the relative expression of sterol regulatory element-binding protein-1 genes were higher (P < 0.05) in the treated groups of muscles, the phosphorylase kinase gamma subunit 1 gene expression was shown an opposite trend. In comparison with LG100, (a) the feed conversion ratio was lower (P < 0.05) in HLG200; (b) the alanine aminotransferase and adiponectin contents were higher (P < 0.05), the malondialdehyde and free fatty acid contents were lower (P < 0.05) in HLG200; (c) the water holding capacity and intramuscular fat contents in the breast and leg muscles were higher (P < 0.05) in HLG200. The hydroxylated lecithin concentration of 200 mg/kg improved the growth performance, serum enzyme activity, hormone levels related to lipid metabolism, and the meat quality of Jiangnan White goslings.
Highlights
Hydroxylated lecithin is a substance that introduces hydroxyl groups into the fatty acid double bonds of concentrated and purified soy lecithin [1, 2]
Effects on Serum Biochemistry Indexes Related to Lipid Metabolism
BMpH, Breast muscle pH value; LMpH, Leg muscle pH value; BMWHC, Breast muscle water holding capacity; LMWHC, Leg muscle water holding capacity; BMSF, Breast muscle shear force; LMSF, Leg muscle shear force; BMFD, Breast muscle fiber diameter; LMFD, Leg muscle fiber diameter; BMFY, Breast muscle fiber density; LMFY, Leg muscle fiber density. a,b,c,dDifferent lowercase letters in the peer data indicate that the difference is significant (P < 0.05)
Summary
Hydroxylated lecithin is a substance that introduces hydroxyl groups into the fatty acid double bonds of concentrated and purified soy lecithin [1, 2] It is considered a safe feed additive for its enriched content of phosphatidylcholine, lecithin, unsaturated fatty acids, choline and inositol. The emulsification function of hydroxylated lecithin and soy lecithin contributes to lipid digestion and absorption, and it was found that soy lecithin can improve the utilization of animal oil in feed for poultry [13, 14]. Both hydroxylated lecithin and soy lecithin have a fatty flavor and good poultry appetizers [2]. We based on comparing the structure and function between soy lecithin and hydroxylated lecithin, and it was hypothesized that hydroxylated lecithin would be superior to soy lecithin in promoting poultry production and was verified in this experiment
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