ORIGINAL PAPER
 
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ABSTRACT
This study was conducted to evaluate the effect of dietary supplementation with increasing levels of distillers dried grains with solubles (DDGS) on growth performance, nutrient digestibility, and carcass quality of growing-finishing pigs. The experiment was divided into 2 phases (Grower and Finisher) in a 16-week trial. A total of 120 [(Landrace × Yorkshire) × Duroc] growing pigs (BW; 22.02 ± 0.08 kg) were randomly assigned to control (CON) and treatment diets (TRT): CON – basal diet, DDGS 4% for growing pigs and 6% for finishing pigs; TRT1 – DDGS 10% for growing pigs and 12% for finishing pigs and TRT2 – DDGS 15% for growing and finishing pigs. Increasing dietary DDGS supplementation did not cause significant linear or quadratic responses in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR). Furthermore, DDGS inclusion did not result in linear or quadratic effects on the digestibility of dry matter (DM), nitrogen (N), and digestible energy (E). Backfat thickness (BFT) tended to decrease (quadratic, P = 0.057) at week 16, whereas lean meat percentage (LMP) was unaffected by increasing DDGS levels in the diets. Thus, the addition of increasing DDGS levels (4–15%) to the basal diet showed no adverse effect on the growth performance, nutrient digestibility, and positively affected carcass quality of growing-finishing pigs, suggesting that DDGS (4–15%) inclusion exerted comparable effects to soybean meal, i.e. the main source of protein, thereby reducing feed cost.
CONFLICT OF INTEREST
The Authors declare that there is no conflict of interest.
METADATA IN OTHER LANGUAGES:
Chinese
生长-肥育猪日粮中添加可溶性干酒糟替代部分豆粕的效果 评价
摘要:本研究旨在评估日粮中逐步增加可溶性干酒糟(DDGS)水平对生长 - 肥育猪的生长性能、养分消化 率和胴体质量的影响。试验期为16周,分为生长和育肥两个阶段。将120头(长白×约克夏)×杜洛克的生长 猪(体重22.02±0.08 kg)随机分为对照组和3个处理组:对照组,饲喂基础日粮;处理组为:生长猪和肥育猪 的DDGS分别为4%和6%;TRT1中DDGS分别为生长猪10%、肥育猪12%,TRT2中生长猪和肥育猪的DDGS均为 15%。结果显示,随日粮DDGS添加量增加不会导致平均日增重(ADG)、平均日采食量(ADFI)和饲料转化 率(FCR)出现显著的线性或二次效应。此外,DDGS对干物质(DM)、氮(N)和可消化能(E)的消化率 也无线性或二次效应。在第16周,背膘厚度(BFT)趋于下降(二次效应,P=0.057),而瘦肉率(LMP)不 受日粮中DDGS水平增加的影响。因此,在基础日粮中增加4–15% 的DDGS不会对生长肥育猪的生长性能、养 分消化率产生不利影响,而对胴体质量产生积极影响。试验表明日粮添加4–15% 的DDGS对蛋白质的主要来 源(即,SBM)具有比较效果,从而降低了饲料成本。
 
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