• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Czech Journal of Animal Science >Impact of glucogenic additive in transition dairy cow diets of varying ruminal starch degradability on yield and composition of milk and reproductive parameters
【24h】

Impact of glucogenic additive in transition dairy cow diets of varying ruminal starch degradability on yield and composition of milk and reproductive parameters

机译：瘤胃淀粉降解性不同的过渡奶牛日粮中的生糖添加剂对牛奶产量和组成及生殖参数的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A two-factorial experiment was carried out on 6 groups (10 animals each) of Polish Black and White Hoistein-Friesian cows in the transition period to determine the effect of glucogenic additive (GA) to the diets containing grains of varied ruminal starch degradation on cow performance. The animals from 3 control groups (C-groups) were fed the diets without any additive, whereas 3 other, experimental ones (A-groups) received the diets with additive of glucogenic preparation (450 g per head/day) comprising calcium propionate and loose propylene glycol (1 : 1). In the control groups as well as in the experimental ones, three analogical treatments, differing in concentrate composed of grain species of varying ruminal degradability of starch, i.e. maize(M) - low ruminal degradability, barley and wheat (BW) - high ruminal degradability and marriage of them (MBW) were conducted. Finally, the treatments were: C-M, C-BW, C-MBW, A-M, A-BW, and A-MBW. The rations of all groups based on maize silage, haylage,and meadow hay were mixed at 69 : 19 : 12 ratio (dry matter (DM) basis) and given ad libitum. Besides, all the animals received adequate concentrate rations to satisfy their nutritional requirements. The experiment started two weeks before the expectedparturition and lasted till the 6th lactation week. Neither GA nor a type of grain in the diets showed significant negative influence on DM intake. A glucogenic additive has positively affected some basal nutrient digestibility, elevating significantly DM and crude protein (CP) coefficients of the apparent total tract digestibility (CATTD), by about 3 percentage points. The GA x grain interactions (P <= 0.05) in CAT TD of CP and nitrogen-free extract (NFE) were stated, with the peak values reported in the A-BW treatment. GA increased (P <= 0.05) daily milk yield by nearly 5% in comparison with the control treatments. GA x grain interaction was noted with the best effect in the treatment where GA was given along with maize-barley-wheat-based concentrate. Besides, the glucogenic additive decreased (P <= 0.05) protein (PDI) expenditure per 1 kg of fat-corrected milk (FCM) by ca. 6% and raised (by 0.15 percentage point in week 6) protein content, while lowered the urea milk level in weeks 3 and 6 of lactation by approximately 15%. It showed beneficial effect on cow reproductive indicators reducing the time interval from calving to successful insemination and improving insemination index.
机译：在过渡期对波兰黑白两头Hoistein-Friesian奶牛的6组（每组10只动物）进行了两因素试验，以确定生糖添加剂（GA）对含不同瘤胃淀粉降解谷物的日粮的影响。牛的表现。给3个对照组（C组）的动物饲喂不含任何添加剂的日粮，而其他3个实验组（A组）接受含葡萄糖酸制剂添加剂的日粮（每头/天450 g），其中包含丙酸钙和松散的丙二醇（1：1）。在对照组和实验组中，三种类似的处理方法，其浓缩物不同，即淀粉的瘤胃可降解性不同的谷类组成，即玉米（M）-低瘤胃可降解性，大麦和小麦（BW）-高瘤胃可降解性和他们结婚（MBW）。最后，治疗方法是：C-M，C-BW，C-MBW，A-M，A-BW和A-MBW。以玉米青贮饲料，海草饲料和草甸干草为基础的所有组的日粮按69:19:12的比例混合（以干物质（DM）为基准），并随意分配。此外，所有动物都接受足够的浓缩饲料以满足其营养需求。实验开始于预期分娩前两周，一直持续到哺乳第6周。日粮中的GA和一种谷物均未显示对DM摄入量有明显的负面影响。糖原添加剂积极影响了一些基础营养物质的消化率，使表观总道消化率（CATTD）的DM和粗蛋白（CP）系数显着提高了约3个百分点。指出了CP的CAT TD中的GA x晶粒相互作用（P <= 0.05）和无氮提取物（NFE），其峰值在A-BW处理中报告。与对照组相比，GA的每日产奶量提高了（P <= 0.05）近5％。在与玉米-大麦-小麦基浓缩物同时施用GA的处理中，发现GA x谷物相互作用具有最佳效果。此外，每1千克脂肪校正牛奶（FCM）所产生的糖原添加剂可使蛋白质（PDI）支出减少（P <= 0.05）。 6％的蛋白质可以提高蛋白质含量（在第6周提高0.15个百分点），而泌乳第3周和第6周的尿素乳水平降低约15％。它对母牛的生殖指标显示出有益的作用，缩短了从产犊到成功授精的时间间隔并提高了授精指数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号