Hester P Y, Krueger K K, Jackson M
Department of Animal Sciences, Purdue University, West Lafayette, Indiana 47907.
Poult Sci. 1990 Oct;69(10):1743-8. doi: 10.3382/ps.0691743.
Male turkeys were fed for ad libitum intake dietary levels of protein and amino acids at 74% of controls from 6 to 12 wk of age. The treatment in which birds were returned to control rations from 12 to 20 wk of age was designated as the low compensatory plane dietary regimen. Turkeys given diets with protein and amino acids at levels 20% above those in control diets from 13 to 20 wk of age were referred to as the high compensatory plane dietary regimen. By 20 wk of age, realimentation had successfully resulted in live body weights comparable with those of controls, but carcass weights were significantly lower in birds fed the low and high compensatory plane diets. Percentage yield of drums, wings, shell, as well as skin and fat did not differ among dietary treatments. Lowered protein and amino acid consumption from 6 to 12 wk of age caused lighter breast and breast muscle weights at 20 wk of age. The percentage yield of breast and breast muscle declined, and thigh and thigh muscle increased for the birds fed the low compensatory plane diet when compared with the controls. The birds fed the low compensatory plane diet were placing a greater proportion of their weight gains during realimentation on thigh muscle rather than breast muscle deposition. Compensatory growth did not affect the absolute length or width of the tarsometatarsus or testes weights at 20 wk of age.
在6至12周龄时，雄性火鸡自由采食蛋白质和氨基酸含量为对照组74%的日粮。在12至20周龄时恢复到对照日粮的处理被指定为低补偿水平日粮方案。在13至20周龄时，给予蛋白质和氨基酸含量比对照日粮高20%的日粮的火鸡被称为高补偿水平日粮方案。到20周龄时，再喂养已成功使活体重与对照组相当，但低补偿水平和高补偿水平日粮喂养的火鸡胴体重量显著较低。日粮处理之间，腿、翅、皮以及皮和脂肪的产出率没有差异。6至12周龄时蛋白质和氨基酸摄入量降低导致20周龄时胸肉和胸肌重量较轻。与对照组相比，低补偿水平日粮喂养的火鸡胸肉和胸肌的产出率下降，大腿和大腿肌肉增加。低补偿水平日粮喂养的火鸡在再喂养期间体重增加的更大比例用于大腿肌肉而非胸肌沉积。补偿性生长在20周龄时不影响跗跖骨的绝对长度或宽度或睾丸重量。
