Partially defatted black soldier fly larva meal inclusion in piglet diets: effects on the growth performance, nutrient digestibility, blood profile, gut morphology and histological features
Partially defatted black soldier fly larva meal inclusion in piglet diets: effects on the growth performance, nutrient digestibility, blood profile, gut morphology and histological features
复制标题
DOI：
10.1186/s40104-019-0325-x
复制
发表时间：
2019-02-19
影响因子：
7
通讯作者：
Gasco, Laura
中科院分区：
文献类型：
--
作者：
Biasato, Ilaria;Renna, Manuela;Gasco, Laura
背景：本试验的目的是研究部分脱脂黑水虻（BSF，Hermetia illucens L.）幼虫粉中不同添加水平对仔猪生长性能、营养物质消化率、血液特征、肠道形态和组织学特征的影响。对总共 48 头刚断奶的仔猪进行单独称重（初始体重 (IBW)：6.1 +/- 0.16 kg），并随机分配至 3 个日粮处理组（4 盒作为重复/处理，4 只动物/盒）。 BSF 幼虫粉以逐渐增加的水平（0% [BSF0]、5% [BSF5] 和 10% [BSF10]）包含在为两个喂养阶段配制的等氮和等能量日粮中：I（从 1 到 23 天）和 II（从 24 到 61 天）。计算每个饲喂阶段和整个试验的增重（WG）、平均日增重（ADG）、平均日采食量（ADFI）和饲料转化率（FCR）。还评估了仔猪的血液化学参数和营养物质消化率。第61天每箱共屠宰3头仔猪，对屠宰仔猪进行形态学研究和组织病理学检查。结果：除了II期的ADFI对增加的BSF膳食水平呈线性响应（P < 0.05，BSF10组的最大值）外，生长性能总体上没有观察到显着差异（P > 0.05）。饮食中的 BSF 膳食并没有显着影响血液特征，但单核细胞和中性粒细胞除外，并且这些细胞分别对 BSF 膳食水平的增加表现出线性和二次响应（P < 0.05，分别是 BSF10 和 BSF5 组的最大值）。另一方面，营养物质消化率、肠道形态和组织学特征不受日粮中添加 BSF 粗粉的影响（P > 0.05）。结论：所得结果表明，部分脱脂 BSF 幼虫粉可作为断奶仔猪日粮的饲料成分，不会对其生长性能、营养物质消化率、血液特征、肠道形态或组织学特征产生负面影响。
Background: The aim of this trial was to investigate the effects of different inclusion levels of a partially defatted black soldier fly (BSF, Hermetia illucens L.) larva meal on the growth performance, nutrient digestibility, blood profile, gut morphology and histological features of piglets. A total of 48 newly weaned piglets were individually weighed (initial body weight (IBW): 6.1 +/- 0.16 kg) and randomly allocated to 3 dietary treatments (4 boxes as replicates/treatment and 4 animals/box). BSF larva meal was included at increasing levels (0% [BSF0], 5% [BSF5] and 10% [BSF10]) in isonitrogenous and isoenergetic diets formulated for two feeding phases: I (fromd 1 to d 23) and II (fromd 24 to d 61). The weight gain (WG), average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR) were calculated for each feeding phase and for the whole trial. The haematochemical parameters and nutrient digestibility of the piglets were also evaluated. A total of 3 piglets per box were slaughtered on d 61 and the slaughtered piglets were submitted to morphometric investigations and histopathological examinations.Results: No overall significant differences were observed for growth performance (P > 0.05), except for the ADFI of phase II, which showed a linear response to increasing BSF meal levels (P < 0.05, maximum for the BSF10 group). Dietary BSF meal inclusion did not significantly influence the blood profile, except as far as monocytes and neutrophils are concerned, and these showed a linear and quadratic response, respectively, to increasing BSF meal levels (P < 0.05, maximum for the BSF10 and BSF5 groups, respectively). On the other hand, the nutrient digestibility, gut morphology and histological features were not affected by dietary BSF meal inclusion (P > 0.05).Conclusions: The obtained results show that a partially defatted BSF larva meal can be used as a feed ingredient in diets for weaned piglets without negatively affecting their growth performance, nutrient digestibility, blood profile, gut morphology or histological features.