Pak J Biol Sci. 2020 Jan;23(12):1551-1562. doi: 10.3923/pjbs.2020.1551.1562.
Raising growing rabbits is an ideal solution to confront animal protein deficiency, especially in developing countries. The presence of lignin in wheat straw causes limitation of the digestion overall process. The biological delignification is a practical and promising alternative due to improving the digestibility of wheat straw. This study aimed to enhance wheat straw digestibility and enriching it with protein and use it as a growing rabbit feedstuff.
Enzymes production of white-rot fungi was assayed in myco-straw and the mean value was recorded. Wheat straw has been treated with the three most effective fungal species with Biological Treated Wheat Straw (BTWS). After that, the myco-straw was grounded and included in diet to evaluate the growth performance, digestibility and blood parameters of a growing V-line rabbit.
The best three species for enzyme productions were P. sajor-caju, P. columbinus and P. floridanus. The optimum incubation period was 16 days. The fungal treatments showed significant enzymes activity of laccase, Mn-peroxidase, cellulase and xylanase. Body weight, body weight gain and feed conversion ratio of growing V-line rabbits had improved than those of the control. But, nutrients digestibility of the diet containing BTWS and Carcass traits of growing V-line rabbits were non-significant compared with the control one. In comparison with control, the lipid profile had no differences but the total protein was improved.
White-rot fungal conversion of wheat straw is maybe one potential alternative providing a more practical, environmental-friendly and nutritionally enhancing as rabbits feedstuff. Rabbits fed BTWS-diets had significantly improved growth performance.
饲养生长兔是解决动物蛋白缺乏的理想方案，尤其是在发展中国家。小麦秸秆中的木质素存在会限制整个消化过程。生物脱木质素由于可以提高小麦秸秆的消化率，因此是一种实用且有前途的替代方法。本研究旨在提高小麦秸秆的消化率，并使其富含蛋白质，用作生长兔的饲料。
在菌秸秆中测定了白腐真菌的酶产量，并记录了平均值。用三种最有效的真菌物种（生物处理的小麦秸秆，BTWS）处理小麦秸秆。之后，将菌秸秆粉碎并添加到饲料中，以评估生长 V 型兔的生长性能、消化率和血液参数。
酶产量最高的三种真菌是 P. sajor-caju、P. columbinus 和 P. floridanus。最佳的孵育期为 16 天。真菌处理显示出漆酶、锰过氧化物酶、纤维素酶和木聚糖酶的显著酶活性。与对照组相比，生长 V 型兔的体重、体重增加和饲料转化率均有所提高。但是，与对照组相比，BTWS 饲料中营养素的消化率和生长 V 型兔的胴体特征没有显著差异。与对照组相比，脂质谱没有差异，但总蛋白有所提高。
白腐真菌对小麦秸秆的转化可能是一种潜在的替代方法，可以提供更实用、环保和营养增强的兔子饲料。用 BTWS 饲料喂养的兔子的生长性能显著提高。
