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  • Title: Effects of lysophospholipid supplementation to reduced energy, crude protein, and amino acid diets on growth performance, nutrient digestibility, and blood profiles in broiler chickens.
    Author: Boontiam W, Hyun YK, Jung B, Kim YY.
    Journal: Poult Sci; 2019 Dec 01; 98(12):6693-6701. PubMed ID: 31801309.
    Abstract:
    Two experiments investigated the effects of lysophospholipid (LPL) supplementation on low-energy and low-nitrogenous diets for broilers. A total of 300 one-day-old male chicks (Ross 308) was allotted to 5 treatments in a completely randomized design. Each group consisted of 6 replicates with 10 birds each. Experimental diet I included positive control (PC) having 3,025 (starter), 3,150 (grower), and 3,200 kcal/kg (finisher) of ME; negative control (NC) was 150 kcal/kg of ME lower than PC, and LPL-05, LPL-10, and LPL-15 treatments were NC + 0.05%, 0.10%, and 0.15% of LPL supplementation, respectively. Experimental diet II included positive control (PC) having a formulated amount of crude protein including Lys and Met + Cys that met the Ross 308 standards; negative control (NC) was 4% lower CP and AA than PC; other treatments were supplemented with LPL at 0.05% (LPL-05), 0.10% (LPL-10), and 0.15% (LPL-15) into the NC, respectively. Experiment I showed that growth performance linearly increased as the LPL inclusion increased (P < 0.001). Broilers fed LPL-10 and LPL-15 increased digestibility of DM (P < 0.05), crude protein (P < 0.01), and total amino acids (P < 0.01) compared to NC. Serum glucose (P < 0.01) and high-density lipoprotein (P < 0.05) concentrations were greater in groups fed LPL-10 than those fed PC. Furthermore, leg muscle increased in birds fed LPL-10 compared with NC (P < 0.05). Experiment II observed a linear response to LPL supplementation in the whole period, in terms of body weight gain (P = 0.015) and feed conversion ratio (P = 0.027). Feeding of 0.15% LPL had promising effects on digestibility of crude protein and ether extract compared with NC (P < 0.01 and P < 0.05, respectively). Overall, LPL could be considered as a feed additive to reduced energy (-150 kcal/kg) or nitrogenous diets (-5%) in order to improve growth performance and nutrient digestibility without adverse effects on lymphoid organs and hepatic enzyme of broilers.
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