Molina E, González-Redondo P, Moreno-Rojas R, Montero-Quintero K, Chirinos-Quintero N, Sánchez-Urdaneta A
Faculty of Humanities and Education, Department of Chemistry, University of Zulia, Maracaibo, Venezuela.
Department of Agroforestry Sciences, University of Seville, Seville, Spain.
J Anim Physiol Anim Nutr (Berl). 2018 Apr;102(2):e525-e533. doi: 10.1111/jpn.12791. Epub 2017 Oct 8.
Amaranthus dubius is an alternative source of fibre and protein for the feed formulation for growing rabbits, although its effects on their health status are yet unknown. Therefore, this study aimed to evaluate the effects of three dietary levels (0, 160 and 320 g/kg) of A. dubius on haematological, serum biochemical and histopathological parameters of fattening rabbits. One hundred and thirteen New Zealand White rabbits were fed ad libitum from weaning (35 days) to slaughter (87 days). The health status of the animals was monitored, and mortality was recorded. Before slaughtering, 30 rabbits were randomly selected for haematological and serum biochemical analysis. During slaughter, 18 rabbits were randomly selected for histopathological study in heart, liver, lung and small intestine. The health status of rabbits was good, with no differences among treatments in mortality. Diet and sex did not affect the values of most haematological and serum biochemical parameters. Fibrinogen, glucose and high-density lipoprotein values increased significantly from 0 to 320 g/kg A. dubius diets. The white blood cell count and glutamic oxaloacetic transaminase values decreased significantly from 0 to 320 g/kg A. dubius diets. The organs showed histologically well-structured tissues. However, in all experimental groups several samples with lesions were observed, always highly focalized in small tissue areas. The main lesions observed, probably related to conditions of thermal stress affecting the rabbits, were cholesterolosis (heart), steatosis (liver), inflammatory lymphoplasmacytic infiltrate (lung) and chronic inflammatory tissue damage (small intestine). In conclusion, the inclusion of up to 320 g/kg A. dubius in diet did not jeopardize the health status of growing rabbits. Therefore, A. dubius can become an alternative raw material for the formulation of feeds in tropical and subtropical countries where this plant is widespread.
糙果苋是生长兔饲料配方中纤维和蛋白质的替代来源，尽管其对兔健康状况的影响尚不清楚。因此，本研究旨在评估糙果苋三种日粮水平（0、160和320 g/kg）对育肥兔血液学、血清生化和组织病理学参数的影响。113只新西兰白兔从断奶（35日龄）至屠宰（87日龄）自由采食。监测动物的健康状况并记录死亡率。屠宰前，随机选择30只兔子进行血液学和血清生化分析。屠宰时，随机选择18只兔子进行心脏、肝脏、肺和小肠的组织病理学研究。兔子的健康状况良好，各处理间死亡率无差异。日粮和性别对大多数血液学和血清生化参数值没有影响。从0至320 g/kg糙果苋日粮，纤维蛋白原、葡萄糖和高密度脂蛋白值显著增加。从0至320 g/kg糙果苋日粮，白细胞计数和谷草转氨酶值显著降低。各器官组织学结构良好。然而，在所有实验组中均观察到一些有病变的样本，病变总是高度集中在小组织区域。观察到的主要病变可能与影响兔子热应激状况有关，包括心脏胆固醇沉着、肝脏脂肪变性、肺炎症性淋巴细胞浸润和小肠慢性炎症组织损伤。总之，日粮中添加高达320 g/kg糙果苋不会危及生长兔的健康状况。因此，在这种植物广泛分布的热带和亚热带国家，糙果苋可成为饲料配方的替代原料。
