饲粮添加甜菜顶和玉米青贮对泌乳水牛生产性能的影响

IF 0.5 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE
H. Gaafar, E. Abdel-Raouf, M. Bendary, G. Ghanem, K. F. El-Reidy
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引用次数: 2

摘要

选取16头产犊8周、体重500 ~ 600 kg的哺乳期多产水牛,采用完全倒换设计,分为4组。第一组饲喂以DM为基础的60%精料混合物(CFM)+20%稻秆(RS)+20%稻秆(BH)的对照日粮(R1),其余各组以DM为基础的40%精料混合物+20%稻秆+40%甜菜顶青贮(SBTS)和玉米青贮(CS)为不同比例的对照日粮(R1);分别为2:1 (R2), 1:1 (R3)和1:2 (R4)。随着玉米青贮水平的增加,饲粮中DM、OM、CF、EE和NFE的消化系数、DM和TDN值以及饲粮中DM和TDN的采食量显著增加(P<0.05),而CP消化率、DCP值以及CP和DCP采食量均随着甜菜顶部青贮水平的增加而显著增加(P<0.05)。饲粮中pH值和NH3-N浓度随甜菜顶青贮水平的增加而升高(P<0.05), TVFA浓度随玉米青贮水平的增加而升高(P<0.05)。R3组产奶量最高(P<0.05), FCM产奶量最高(7%),R1组产奶量最低。脂肪、乳糖和TS含量随玉米青贮水平的增加而增加(P<0.05),蛋白质、SNF和灰分含量随甜菜顶青贮水平的增加而增加(P<0.05)。饲粮R3每kg 7% FCM所需的DM和TDN最低,饲粮R4每kg 7% FCM所需的CP和DCP最低,饲粮R1最高(P<0.05)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Productive Performance of Lactating Buffaloes Fed Ration Containing Sugar Beet Tops and Corn Silages
Sixteen multiparous lactating buffaloes after 8 weeks of calving and weighing 500 to 600 kg were used in a complete switch-back design with four groups. Buffaloes in the first group were fed the control ration (R1) consisted of DM basis of 60% concentrate feed mixture (CFM)+20% rice straw (RS)+20% berseem hay (BH), while in the other groups the rations consisted of DM basis of 40% CFM+20% RS+40% sugar beet tops silage (SBTS) and corn silage (CS) in different ratios; 2:1 (R2), 1:1 (R3) and 1:2 (R4), respectively. The digestibility coefficients of DM, OM, CF, EE and NFE, TDN value and the intake of DM and TDN increased significantly (P<0.05) with increasing the level of corn silage, however, CP digestibility, DCP value and CP and DCP intake increased (P<0.05) with increasing level of sugar beet tops silage in the rations. The pH value and NH3-N concentration increased (P<0.05) with increasing level of sugar beet tops silage, however, TVFA's concentration increased (P<0.05) with increasing level of corn silage in the rations. Buffaloes fed R3 recorded the highest (P<0.05) milk and 7% FCM yield, however, those fed R1, had the lowest yield. The percentages of fat, lactose and TS increased (P<0.05) with increasing the level of corn silage, however, the percentages of protein, SNF and ash increased (P<0.05) with increasing the level of sugar beet tops silage in rations. Animals fed R3 showed the lowest amounts of DM and TDN required per kg 7% FCM and R4 the lowest amounts of CP and DCP required per kg 7% FCM, however, those fed R1 revealed the highest amounts (P<0.05).
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来源期刊
Iranian Journal of Applied Animal Science
Iranian Journal of Applied Animal Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
1.40
自引率
0.00%
发文量
0
审稿时长
8 weeks
期刊介绍: Iranian Journal of Applied Animal Science (IJAS) is an international journal publishing Research Articles (Full-Length Original Scientific Papers), Short Communications and Review on animal sciences, and related areas. The journal covers all related topics of Animal Science. Papers are welcome reporting studies in all aspects of animal science including: - Animal breeding and genetics (such as quantitative and molecular analysis of animal performance, genetic improvement and resources, genetics of physiological process, selection schemes for economic animal improvement, impact on animal health, etc) - Animal feeding and nutrition (such as food intake, digestion, nutrigenomics/nutrient: gene interactions, metabolism and metabolomics, nutritional control of function and performance, feed evaluation and feeding, diet and animal health) - Animal reproduction - Animal biotechnology - Animal physiology and functional biology of systems (such as reproductive and developmental biology, growth, muscle biology, lactation, exercise, product composition etc) - Animal ethology, behavior and welfare (such as social and sexual behavior, animal- man relationships, adaptation, stress, impact of management and environment on health, etc) - Animal products technology - Animal management and economics - Animal products processing and animal by-products - Animal microbiology - Livestock farming systems, environmental impact and climate changes (such as sustainable livestock management systems, whole farm management strategies, animal work, systems modeling, traceability, socio-economic consequences of systems, the impact of animals on biodiversity and landscape and climate changes, etc). - Other related topics (such as engineering, farming and land-use management and to other disciplines in relation to animal science).
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