本研究的目的是评估公羔羊饲喂含桃棕榈粕替代玉米（0，10，40，60和85%干物质（DM））日粮的营养物质摄入量、表观消化率，生产性能和血浆葡萄糖浓度。该研究将30头平均初始体重21.6±0.87kg的圣伊内斯公羊分布在一个五种日粮、六次重复的完全随机分组设计中。桃棕榈粕替代玉米可使DM，有机物（OM）、粗蛋白质（CP）、中性洗涤纤维校正灰分和蛋白质（NDFap）、总碳水化合物（TC），总可消化养分（TDN），和代谢能（ME）的摄入量直线下降（P＜0.05）；醚提取物（EE）的摄入量，然而，符合线性增加方程（P＜0.05）。随着精料中桃棕榈粕的水平增加，DM、OM、NDFap和TC的表观消化率呈线性下降（P＜0.05）。每一个水平的桃棕榈粕替代玉米的总增重和平均日增重分别下降了0.09和0.001kg。研究人员认为用桃棕榈粕代替40%的玉米较为合理。

原文摘要如下：

Intake, digestibility and performance of lambs fed diets containing peach palm meal

dos Santos AB¹, Pereira ML², de Oliveira Silva HG², de Carvalho GG³, de Jesus Pereira TC², Ribeiro LS⁴, Azevêdo JA⁵, das Graças Conceição Parada Costa Silva M⁶, Sousa LB², Sousa LB², de Oliveira Alencar D²

Abstract: The aim of this study was to evaluate the intake and apparent digestibility of nutrients, performance, and plasma glucose concentration of ram lambs fed diets containing peach palm meal substituting maize (0, 10, 40, 60, and 85% dry matter (DM)). Thirty Santa Inês rams with an average initial body weight of 21.6±0.87kg were distributed in a completely randomized design with five diets and six replicates. The substitution of the maize for the peach palm meal affected (P<0.05) the intakes of DM, organic matter (OM), crude protein (CP), neutral detergent fiber corrected for ash and protein (NDFap), total carbohydrates (TC), total digestible nutrients (TDN), and metabolizable energy (ME), which decreased linearly (P<0.05); the intake of ether extract (EE), however, fit an increasing linear equation (P<0.05). The apparent digestibility coefficients of DM, OM, NDFap, and TC decreased linearly (P<0.05) as the level of peach palm meal in the concentrate was increased. The total weight gain and the average daily gain decreased by 0.09 and 0.001kg with each level of substitution of the maize for peach palm meal, respectively. It is recommended to substitute 40% of the maize for peach palm meal.

Keywords: Alternative feed, Bactris gasipaes Kunth, Maize, Santa Inês

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