Blair M E, Potter L M, Hulet R M
Department of Poultry Science, Virginia Polytechnic Institute, Blacksburg, 24061-0332.
Poult Sci. 1989 Feb;68(2):278-86. doi: 10.3382/ps.0680278.
An experiment was conducted to determine the effects of dietary protein and added fat on body weight, feed consumption, and feed efficiency of male and female Nicholas Large White (N), Jaindl Large White (JL), and Jaindl Medium White (JM) turkeys at various ages. At 8 wk of age, 162 males and 288 females from each strain were divided equally into six pens of males and six pens of females per strain. Each of 6 pelleted diets containing standard or high protein and 0, 5, or 10% added fat was fed to one pen of each sex and strain of turkeys. At 20 wk of age, N, JL, and JM males weighed 14.77, 11.56, and 9.00 kg, respectively, and females weighed 8.97, 7.49, and 5.75 kg, respectively. At 28 wk of age, N, JL, and JM males weighed 18.32, 15.10, and 11.65 kg, respectively, and females weighed 10.35, 9.12, and 7.04 kg, respectively. The feeding of diets containing 10% rather than 0% added fat from 8 to 20 wk of age decreased feed consumption 11.1 and 13.1% and increased feed efficiency 16.3 and 16.4% in males and females, respectively. Feeding high protein diets significantly increased body weight gains. The apparent smaller increase than previously experienced in feed efficiency from dietary added fat may be associated with the use of pelleted feed in this experiment.
进行了一项实验，以确定日粮蛋白质和添加脂肪对不同年龄的雄性和雌性尼古拉斯大白火鸡（N）、詹德尔大白火鸡（JL）和詹德尔中白火鸡（JM）的体重、采食量和饲料效率的影响。8周龄时，将每个品系的162只雄性和288只雌性火鸡平均分为每个品系的6个雄性栏和6个雌性栏。将6种含有标准或高蛋白以及0%、5%或10%添加脂肪的颗粒饲料分别喂给每个性别和品系的一栏火鸡。20周龄时，N、JL和JM雄性火鸡的体重分别为14.77千克、11.56千克和9.00千克，雌性火鸡的体重分别为8.97千克、7.49千克和5.75千克。28周龄时，N、JL和JM雄性火鸡的体重分别为18.32千克、15.10千克和11.65千克，雌性火鸡的体重分别为10.35千克、9.12千克和7.04千克。从8周龄到20周龄饲喂含有10%而非0%添加脂肪的日粮，雄性和雌性火鸡的采食量分别降低了11.1%和13.1%，饲料效率分别提高了16.3%和16.4%。饲喂高蛋白日粮显著增加了体重增加。日粮添加脂肪导致的饲料效率增幅明显小于之前的经验，这可能与本实验中使用颗粒饲料有关。
