RT Journal T1 EFFECT OF PROTEIN BOUND AND FREE LYSINE ON GROWTH PERFORMANCE, MEAT QUALITY, BLOOD HEMATOLOGY AND ECONOMICS IN BROILERS A1 Muhammad Arslan Asif A1 Muhammad Mahboob Ali Hamid A1 Muhammad Shoaib A1 Muhammad Aslam Mirza A1 Hafiz Hassan Iqbal A1 Muhammad Issa Khan A1 Najam-us-Sahar A1 Shahzad Ashraf A1 Muhammad Mansoor Javed A1 Soban Shehzad A1 Muhammad Salman Asif A1 Saad Jameel JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 33 IS 5 SP 1071 OP 1079 YR 2023 FD 2023/09/30 DO DOI https://doi.org/10.36899/JAPS.2023.5.0700 AB

The objective of this study was study the protein bound and free lysine (Lys) on production performance in broilers. Two hundred and sixteen (216) day-old broiler chicks were distributed into three treatments, six replicates and 12 birds in each. Three isonitrogenous (CP 22.5%) and isocaloric (ME 3000 Kcal/kg) experimental diets were formulated. In control diet, total digestible Lys (1.20%) was contributed by feed ingredients like soybean meal, canola meal and fish meal. In other two diets, out of 1.2, 0.06 was free Lys that was either contributed by L-Lys Sulfate or L-Lys HCl which were assumed to be 100% digestible. Feed intake was (P≤0.05) lower in birds received free Lys than those reared on bounded Lys. Weight gain and FCR were improved (P≤0.05) in birds received protein bound Lys and free Lys as L-Lys Sulfate than L-Lys HCl. Dressing percentage, liver weight, water holding capacity, pH, cooking loss and blood hematology parameters were not affected by treatments. Production cost per kg live weight was lower in birds received free Lys as L-Lys Sulfate than others treatments. It can be concluded that use of free Lys in the form of L-Lys Sulfate had improved feed efficiency and economics efficiency without having negative effect on meat quality and blood hematology parameters.

K1 Bounded Lysine, Free Lysine, Growth performance, Blood hematology, Economics PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2022-JAPS-256