Salmon R E, Stevens V I
Research Branch, Agriculture Canada, Saskatchewan.
Poult Sci. 1990 Jul;69(7):1133-40. doi: 10.3382/ps.0691133.
Two experiments were conducted to investigate the response of turkeys to graded levels of bambermycins++ in wheat-based diets. In one, 960 Medium White poults were fed 0,2,3, or 4 mg bambermycins per kg from day-old to 12 wk of age. In the other, 264 male and 408 female Large White poults were fed 0,2,5, or 10 mg bambermycins per kg from day-old to 15 (females) or 18 (males) wk of age. Response of Medium White poults increased with age, with significantly greater weight gain from 8 to 12 wk of age as well as final weights when the diet was supplemented with bambermycins. Large White poults responded with highly significant increases in gains from 0 to 4 and 4 to 8 wk of age, and a highly significant linear response to bambermycins in final weights. Although feed efficiency of Large White poults from 0 to 4 wk of age increased with bambermycins, overall efficiency in both trials decreased when the diets were supplemented. The earlier and greater response of Large White poults in comparison with birds of a Medium White strain may be related to the differing growth characteristics of those strains. The difference may also be related to the re-use of litter in the former trial. However, the effect of neither strain nor litter was determined within the same experiment.
进行了两项试验，以研究火鸡对以小麦为基础的日粮中不同水平的杆菌肽锌的反应。在一项试验中，960只中白火鸡雏鸡从一日龄到12周龄饲喂每千克含0、2、3或4毫克杆菌肽锌的日粮。在另一项试验中，264只雄性和408只雌性大白火鸡雏鸡从一日龄到15周龄（雌性）或18周龄（雄性）饲喂每千克含0、2、5或10毫克杆菌肽锌的日粮。中白火鸡雏鸡的反应随年龄增长而增加，当日粮添加杆菌肽锌时，8至12周龄的体重增加以及最终体重显著更高。大白火鸡雏鸡在0至4周龄和4至8周龄的增重有极显著增加，最终体重对杆菌肽锌有极显著的线性反应。虽然大白火鸡雏鸡0至4周龄的饲料效率随杆菌肽锌增加，但在两项试验中，日粮添加杆菌肽锌后总体效率均下降。与中白品系的火鸡相比，大白火鸡雏鸡更早且更大的反应可能与这些品系不同的生长特性有关。这种差异也可能与前一项试验中垫料的重复使用有关。然而，在同一试验中未确定品系和垫料的影响。
