Improving pellet quality (PQ) by increasing the percentage of pellets in finished feed is complicated. The hurdles of feed manufacturing are well documented. Researchers continue to investigate the effects of PQ on various performance parameters, yet additional PQ benefits must be presented to stimulate change in feed manufacturing practices. Therefore, the aim of this study was to investigate the effects of PQ on nutrient segregation in commercial broiler houses differing in feed line length. Four experiments (Exp) were performed, each including 4 replicate feed lines segmented into 8 regions. A commercial broiler finisher diet was manufactured using techniques to create either poor pellet quality (PPQ) or improved pellet quality (IPQ) feeds. Exp1 and Exp2 were conducted to investigate how PPQ and IPQ feed contributes to nutrient segregation in a 152-m feed line, respectively. Exp3 and Exp4 used the same PPQ and IPQ feed but were carried out in a 152-m house with split feed lines, 76-m long. Feed samples were taken from each feed pan per Exp. Pellets and fines were analyzed separately to determine pellet-to-fine ratio (P:F), pellet survivability, and nutrient concentrations. Segregation of amino acids and phytase were apparent in Exp1 (PPQ-152m), demonstrated by varying concentrations of amino acids and phytase activity across the 8 regions of the feed line (P < 0.05). Phytase segregation was not apparent in Exp2 (IPQ-152m) (P > 0.05). Threonine and phytase segregation occurred in Exp3 (PPQ-76m) (P < 0.05), whereas no evidence of nutrient segregation was observed in Exp4 (IPQ-76m) (P > 0.05). These data suggest that investing in PQ improvements provides a more uniform distribution of nutrients throughout the house.

通过增加成品饲料中颗粒的百分比来提高颗粒质量（PQ）十分复杂。饲料生产的障碍有据可查。研究人员继续研究PQ对各种性能参数的影响，但是还必须提供其他PQ好处以刺激饲料生产实践的变化。因此，本研究的目的是研究PQ对不同饲喂线长度的商品肉鸡舍中养分分离的影响。进行了四个实验（Exp），每个实验包括4个重复的进料管线，分为8个区域。商业肉鸡肥育饲料的生产利用造成颗粒品质差（PPQ）或颗粒品质改善（IPQ）的技术。）供稿。进行实验1和实验2分别研究PPQ和IPQ进料如何促进152米进料线中的养分分离。Exp3和Exp4使用相同的PPQ和IPQ进料，但在152米的房屋中进行，该房屋有76米长的分开的进料管线。每次实验从每个供料盘取饲料样品。分别分析颗粒和细粉以确定颗粒与细粉的比率（P：F），颗粒存活率和营养物浓度。氨基酸和植酸酶的分离在Exp1（PPQ-152m）中很明显，这可通过饲料线8个区域氨基酸和植酸酶活性的变化来证明（P <0.05）。在Exp2（IPQ-152m）中植酸酶分离不明显（P > 0.05）。苏氨酸和植酸酶的分离发生在Exp3（PPQ-76m）（P<0.05），而在Exp4（IPQ-76m）中未观察到营养偏析的证据（P > 0.05）。这些数据表明，投资于改善PQ可以使整个房屋内的养分分布更加均匀。