期刊文献

Effects of Dietary Replacement of Alfalfa Hay With Corn Silage on Energy Utilization Efficiency and Metabolizable Energy Requirements in Crossbred Hu Ewes During Early Lactation 收藏

早期泌乳期间，用玉米青贮饲料用玉米青贮饲料用玉米青贮饲料替代苜蓿干草对越野胡子的能量利用效率的影响

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作者

作者单位

[1]The United Graduate School of Agricultural Sciences Tottori University Tottori Japan; [2]Arid Land Research Center Tottori University Tottori Japan; [3]State Key Laboratory of Grassland Agro‐Ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou Gansu Province China; [4]Arid Land Research Center Tottori University Tottori Japan; [5]State Key Laboratory of Grassland Agro‐Ecosystems, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou Gansu Province China; [6]Faculty of Life and Environmental Sciences Shimane University Matsue Japan;

发布日期

2025-2-13

DOI

10.1111/asj.70034

来源信息

Animal Science Journal ISSN：1344-3941, 2025年, 96卷, 1期

摘要

【ABSTRACT】We evaluated the effect of dietary substituting corn silage (CS) for alfalfa hay (AH) on feed intake, lactation performance, and energy utilization efficiency of crossbred Hu ewes. In a completely randomized experiment, 12 lactating crossbred ewes (3 ± 1.5 DIM) were fed one of three isoenergetic diets with forage‐to‐concentrate ratio of 70:30. The three experimental diets (CON, CS1, and CS2) were formulated by replacing AH with different levels of CS (0%, 30%, and 60%, respectively). Energy balance was determined through a metabolism and respiration trial. We observed identical trends for feed intake and gross energy intake (GEI); the GEI ranged from 0.97 to 1.34 (MJ/kg BW0.75 day) among the treatments. Around 26%–33% of the GEI was lost as feces, 56%–60% for heat production, 14%–16% for milk production, 5%–6% for methane emission, and 3% for urinary energy. The metabolizable energy requirement for maintenance of crossbred Hu ewe was estimated to be 484.7 kJ/kg body weight0.75/day. Furthermore, the energy digestibility and metabolizability of the CS diets were significantly greater than those of the CON diet. Substituting AH for up to 60% CS increased energy utilization efficiency without detrimental effects on milk production in crossbred Hu ewes fed a forage‐based diet.

摘要译文

【摘要】我们评估了饮食中替代玉米青贮饲料（CS）对苜蓿干草（AH）对饲料摄入量，泌乳性能和越野植物的能量利用效率的影响。在完全随机的实验中，喂食三种等同饮食中的一种哺乳期杂交母羊（3±1.5昏暗），饲料至浓度为70:30。通过用不同水平的CS（分别为0％，30％和60％）代替AH来制定三种实验饮食（CON，CS1和CS2）。能量平衡是通过代谢和呼吸试验确定的。我们观察到饲料摄入量和总能量摄入（GEI）的趋势相同；GEI在处理中的GEI范围从0.97至1.34（MJ/kg BW0.75天）。由于粪便损失了约26％–33％的GEI，热量产量为56％–60％，牛奶产量为14％–16％，甲烷排放量为5％，泌尿能为3％。维持越野hu ewe的可代谢能量需求估计为484.7 kJ/kg体重0.75/天。此外，CS饮食的能量消化率和代谢性明显大于Con饮食的能量。将AH取代高达60％的CS，提高了能量利用效率，而不会对基于草料的饮食的杂交Hu母羊的牛奶产量有害影响。

Qing Qing (https://orcid.org/0009-0009-9998-2887) [1];Mitsuru Tsubo (https://orcid.org/0000-0002-8729-2215) [2];Wuchen Du (https://orcid.org/0000-0002-2379-1146) [3];Atsushi Tsunekawa (https://orcid.org/0000-0002-7690-0633) [4];Fujiang Hou (https://orcid.org/0000-0002-5368-7147) [5];Toshiyoshi Ichinohe (https://orcid.org/0000-0002-5126-7608) [6];. Effects of Dietary Replacement of Alfalfa Hay With Corn Silage on Energy Utilization Efficiency and Metabolizable Energy Requirements in Crossbred Hu Ewes During Early Lactation[J]. Animal Science Journal, 2025,96(1)