Bartov I, Paster N
Br Poult Sci. 1986 Sep;27(3):415-20. doi: 10.1080/00071668608416898.
During 65 d of storage a gradual increase in fungal activity (evaluated by CO2 production) was observed in a diet with its moisture content elevated to 136 g/kg. This activity was inhibited by supplementation of the wetted diets with either calcium propionate (3 g/kg) or Agrosil (2 g/kg). The fat content of the wetted untreated diet decreased between the 18th and the 45th d of storage from 38 to 29 g/kg. This change was prevented by the addition of either of the two fungistats. The weight gains of 7-d-old female broiler chicks fed on the wetted diets with or without the fungistats from the 18th d after their preparation for 27 d, did not differ significantly (P greater than 0.05) from those of birds fed on the unwetted diet. However, the food:gain ratio of chicks fed on the unwetted diet was significantly (P less than 0.05) better than that of chicks fed on the fungistat-free wetted diet. The results from birds fed on the fungistat-supplemented wetted diets were intermediate. It is concluded that the early stages of fungal activity (characterised by increased CO2 production, without changes or with only a slight decrease in fat content) have only a minor effect on the nutritional value of diets.
在储存65天期间,观察到水分含量提高到136克/千克的日粮中真菌活性(通过二氧化碳产生量评估)逐渐增加。向湿润的日粮中添加丙酸钙(3克/千克)或克霉灵(2克/千克)可抑制这种活性。未处理的湿润日粮在储存第18天至第45天期间,脂肪含量从38克/千克降至29克/千克。添加两种抑真菌剂中的任何一种都可防止这种变化。从制备后第18天起,给7日龄雌性肉鸡雏鸡饲喂添加或未添加抑真菌剂的湿润日粮27天,其体重增加与饲喂未湿润日粮的雏鸡相比无显著差异(P大于0.05)。然而,饲喂未湿润日粮的雏鸡的料重比显著(P小于0.05)优于饲喂未添加抑真菌剂的湿润日粮的雏鸡。饲喂添加抑真菌剂的湿润日粮的雏鸡的结果介于两者之间。得出的结论是,真菌活性的早期阶段(以二氧化碳产生量增加为特征,脂肪含量无变化或仅有轻微下降)对日粮营养价值的影响较小。