Effect of feeding different levels of foliage from Cratylia argentea to creole dairy cows on intake, digestibility, milk production and milk composition
Effect of feeding different levels of foliage from Cratylia argentea to creole dairy cows on intake, digestibility, milk production and milk composition
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给克里奥尔奶牛饲喂不同水平的银桂叶对采食量、消化率、产奶量和牛奶成分的影响
DOI：
10.1007/s11250-006-4314-7
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发表时间：
2006
影响因子：
1.7
通讯作者：
I. Ledin
中科院分区：
文献类型：
--
作者：
N. R. Sánchez;I. Ledin
本文研究了不同水平的银叶藓叶的取食效果。Kuntze对奶牛的采食量、消化率、产奶量和乳成分的影响。处理是高粱青贮饲料，自由采食，无论是不补充或补充2公斤或3公斤的高粱干物质（DM）的基础上。采用3×3拉丁方重复设计，选用6头平均体重386（SD 19）kg的克里奥尔雷纳种印度牛。添加甘草使单独青贮高粱和添加2 kg和3 kg甘草DM分别使DM摄入量从6.6增加到7.8和8.7 kg DM/天，产奶量从3.9增加到5.1和5.7 kg/天（p< 0.05）。乳脂、总固形物、粗蛋白和感官特性（气味、味道和颜色）在日粮中没有显著差异。添加甘草对干物质、有机物、中性洗涤纤维和酸性洗涤纤维的表观消化率无显著影响。但添加高粱复合肥后，粗蛋白质消化率显著提高（p< 0.05）。总之，在低质量的饮食中，作为蛋白质补充剂，利格列芬改善了DM的摄入量和CP的消化率，提高了牛奶产量，但不影响牛奶的成分。
The effect of feeding different levels of foliage fromCratylia argentea(Desvaux) O. Kuntze to dairy cows on intake, digestibility, milk production and milk composition was studied in the dry tropics in Nicaragua. The treatments were sorghum silagead libitum, either unsupplemented or supplemented with 2 kg or 3 kg ofCratyliaon a dry matter (DM) basis. SixBos indicuscows of the Creole Reyna breed, with a mean body weight of 386 (SD 19) kg were used in a replicated 3×3 Latin square design. Supplementation withCratyliaincreased (p< 0.05) DM intake from 6.6 to 7.8 and 8.7 kg DM/day and milk production from 3.9 to 5.1 and 5.7 kg/day for sorghum silage alone and supplementation with 2 kg and 3 kg DM ofCratylia, respectively. Milk fat, total solids and crude protein and organoleptic characteristics (smell, taste and colour) were not significantly different among diets. The apparent digestibility coefficients of dry matter, organic matter, neutral detergent fibre and acid detergent fibre were not affected significantly by supplementation withCratylia. However, crude protein (CP) digestibility increased (p< 0.05) in the diets supplemented withCratyliacompared to sorghum silage alone. In conclusionCratyliagiven as a protein supplement to a low-quality diet improved DM intake and CP digestibility of the diet and increased milk production, but did not affect milk composition.