Journal of Animal Science and Technology
Korean Society of Animal Science and Technology
Article

Effects of increasing dietary lysine and energy levels on growth efficiency, nutrient absorption, and meat carcass traits in growing-finishing pigs

Sarbani Biswas1, De Dang1, Sungbo Cho1, Dae-Kyung Kang1, In Kim1,*
1Department of Animal Resource and Science, Dankook University, No. 29 Anseodong, Cheonan, Choongnam 330-714, South Korea., Cheonan 330-714, Korea.
*Corresponding Author: In Ho Kim, Department of Animal Resource and Science, Dankook University, No. 29 Anseodong, Cheonan, Choongnam 330-714, South Korea., Cheonan 330-714, Korea, Republic of. Phone: +82-41-550-3652. E-mail: inhokim@dankook.ac.kr.

© Copyright 2023 Korean Society of Animal Science and Technology. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Jun 30, 2023; Revised: Oct 21, 2023; Accepted: Oct 26, 2023

Published Online: Oct 30, 2023

Abstract

This study was executed to estimate the impacts of increasing dietary standardized ileal digestible (SID) lysine and net energy levels on growth, nutrient absorption, and meat carcass traits in growing-finishing pigs. In total, 90 pigs [(Yorkshire × Landrace) × Duroc] were erratically dispensed to 3 treatments (6 replicate/treatment) with 5 pigs (3 barrows and 2 gilts) per pen, and their average primary body weight was 20.51± 0.02 kg. The trial period was 16 weeks (growing stage, initial to week 8; finishing stage, week 8 to week 16). The dietary treatments used included control (CON) as the basal diet, TRT1 (basal diet + 0.05% SID lysine), and TRT2 (basal diet + 0.05% SID lysine + 0.084 MJ/kg net energy) for both the growing and finishing stages. Both the TRT1 and TRT2 group diets improved (<italic>p</italic> = 0.033) average daily gain (ADG) at week 12 and tended to enhance (<italic>p </italic>= 0.088) body weight at week 12 and ADG at the overall period compared to the CON group. Moreover, pigs in the TRT2 group had higher backfat thickness (<italic>p</italic> = 0.034) at week 12 in comparison to the TRT1 and CON diets. Nevertheless, no treatment effect was found (<italic>p</italic> &gt; 0.05) in nutrient absorption or carcass grade among the dietary treatments. Hence, incorporating the increasing level of 0.05% SID lysine and 0.084 MJ/kg net energy into the pig diet during the growing and finishing stages can be considered a suitable approach for enhancing both growth efficiency and carcass backfat thickness in pigs.

Keywords: carcass traits; energy; growing-finishing pig; lysine; performance