Department of Poultry Breeding and Animal Products Evaluation, and
Department of Poultry Breeding and Animal Products Evaluation, and.
Poult Sci. 2014 Aug;93(8):1993-9. doi: 10.3382/ps.2013-03833. Epub 2014 Jun 3.
The objective of this study was to determine the effect of corn silage and quantitative feed restriction on BW, ADG, feed conversion, and carcass composition of White Kołuda W31 geese. Two diets were fed during the rearing period from 22 to 98 d of age: 1) a commercial diet ad libitum, and 2) restricted amounts of a commercial diet and corn silage ad libitum. Each treatment had 2 replicates of 16 birds each. From 99 to 119 d of age, all birds were fattened with whole oat grain alone. Incorporation of corn silage reduced weight gains and caused statistically significant differences in BW at the end of the rearing period (14 wk, 6,625.0 vs. 6,050.0 g; P < 0.05). Experimental geese showed compensatory growth during the oat fattening period and the BW of geese from both groups was similar at the end of the study (17 wk, 7,675.1 vs. 7,467.9 g; P > 0.05). Daily weight gains varied with week of growth, being lowest at 12 wk of age. Birds fed the commercial diet and corn silage had a significantly longer trunk (29.2 vs. 31.0 cm, P < 0.05) and shorter shanks (10.0 vs. 9.4 cm, P < 0.05) at 8 wk, and significantly smaller chest circumference (54.7 vs. 51.9 cm, P < 0.05) at the end of 14 wk. At the end of oat feeding (17 wk), geese receiving silage had significantly longer trunk and drumstick compared with geese fed commercial diets alone. The carcasses of 17-wk-old experimental geese contained more breast and leg muscles (%), and less skin with subcutaneous fat from breast and legs compared with control birds. Significant differences were only noted between the groups in dressing percentage (65.0 vs. 74.7%, P < 0.05) and proportion of skin with subcutaneous fat from breast (8.9 vs. 7.8%, P < 0.05). Dilution of the diet for young fattening geese with whole-crop corn silage had a positive effect on production economics and carcass composition.
本研究旨在确定青贮玉米和定量饲料限制对怀特库尔多鹅（White Kołuda W31）体重、日增重、饲料转化率和胴体组成的影响。在 22 至 98 日龄的育肥期，给两组鹅饲喂两种日粮：1）自由采食商业日粮，2）限制饲喂商业日粮和自由采食青贮玉米。每个处理组有 2 个重复，每个重复 16 只鹅。从 99 日龄到 119 日龄，所有鹅都单独用全燕麦粒育肥。青贮玉米的添加降低了体重增加，并导致育肥期末（14 周）体重存在显著差异（6625.0 克和 6050.0 克；P<0.05）。试验鹅在燕麦育肥期表现出补偿性生长，两组鹅在研究结束时的体重相似（17 周，7675.1 克和 7467.9 克；P>0.05）。日增重随生长周数而变化，在 12 周龄时最低。饲喂商业日粮和青贮玉米的鹅在 8 周龄时具有更长的体躯（29.2 厘米和 31.0 厘米，P<0.05）和更短的跗关节（10.0 厘米和 9.4 厘米，P<0.05），在 14 周龄期末时具有更小的胸围（54.7 厘米和 51.9 厘米，P<0.05）。在燕麦育肥结束时（17 周龄），饲喂青贮玉米的鹅与仅饲喂商业日粮的鹅相比，具有更长的体躯和鸡腿。17 周龄试验鹅的胴体含有更多的胸肌和腿肌（%），以及更少的胸部和腿部皮肤与皮下脂肪。仅在两组之间观察到在屠宰率（65.0%和 74.7%，P<0.05）和胸部皮肤与皮下脂肪的比例（8.9%和 7.8%，P<0.05）方面存在显著差异。用全株玉米青贮饲料稀释育肥鹅的日粮对生产经济和胴体组成有积极影响。
