Partial Substitution of Alfalfa Hay by Stevia (Stevia rebaudiana) Hay Can Improve Lactation Performance, Rumen Fermentation, and Nitrogen Utilization of Dairy Cows.
Partial Substitution of Alfalfa Hay by Stevia (Stevia rebaudiana) Hay Can Improve Lactation Performance, Rumen Fermentation, and Nitrogen Utilization of Dairy Cows.
复制标题
甜菊干草部分替代苜蓿干草可提高奶牛泌乳性能、瘤胃发酵和氮利用率。
DOI：
10.3389/fvets.2022.899148
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发表时间：
2022
影响因子：
3.2
通讯作者：
Zhao, Guoqi
中科院分区：
文献类型：
--
作者：
Jiang, Maocheng;Datsomor, Osmond;Cheng, Zhiqiang;Meng, Zitong;Zhan, Kang;Yang, Tianyu;Huang, Yinghao;Yan, Qi;Zhao, Guoqi
本研究的目的是确定在奶牛日粮中用甜叶菊 (Stevia rebaudiana) 干草替代等氮和等能量基础苜蓿干草 (AH) 对营养消化、产奶性能、瘤胃发酵和氮 (N) 利用的影响。在本研究中，选择了24头健康的荷斯坦泌乳奶牛，其产奶量相似，为33.70±2.75（平均值±标准差）公斤，产奶天数为95.98±23.59（平均值±标准差）天，体重为587.75±66.97（平均值±标准差）公斤，并随机分为三组。三个处理的成分为（1）AH组为30.0%AH，0%甜叶菊干草（SH）； (2)6%SH组为24.0%AH，6%SH； (3)12%SH组为18.0%AH和12%SH。用SH替代AH不影响干物质摄入量(DMI)、总能量(GE)和其他营养素摄入量，但增加了中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)的消化率。与AH日粮相比，饲喂6%SH日粮的奶牛产奶量和乳脂浓度更高。饲喂 6% SH 日粮的奶牛粪便和尿氮 (N) 低于饲喂 AH 日粮的奶牛。饲喂 6% SH 日粮的奶牛的乳氮分泌量和乳氮占氮摄入量的百分比高于饲喂 AH 日粮的奶牛。饲喂 6% SH 日粮的奶牛瘤胃挥发性脂肪酸、乙酸和氨氮浓度高于饲喂 AH 日粮的奶牛。相比之下，与AH和6%SH组相比，12%SH组对产奶量、乳成分、氮利用率和瘤胃发酵没有影响。总之，饲喂 6% SH 替代部分 AH 似乎可以提高泌乳奶牛的泌乳性能和氮利用率。
The objective of this study was to determine the effect of replacing isonitrogenous and isoenergetic basis alfalfa hay (AH) with stevia (Stevia rebaudiana) hay in dairy cow diets on nutrient digestion, milk performance, rumen fermentation, and nitrogen (N) utilization. In this study, 24 healthy Holstein lactating dairy cattle with a similar milk yield of 33.70 ± 2.75 (mean ± SD) kg, days in milk 95.98 ± 23.59 (mean ± SD) days, and body weight 587.75 ± 66.97 (mean ± SD) kg were selected and randomly allocated into three groups. The constituents of the three treatments were (1) 30.0% AH, and 0% stevia hay (SH) for the AH group; (2) 24.0% AH, and 6% SH for the 6% SH group; (3) 18.0% AH, and 12% SH for the 12% SH group. The substitution of AH with SH did not affect dry matter intake (DMI), gross energy (GE), and other nutrients intake but increased the digestibility of neutral detergent fiber (NDF) and acid detergent fiber (ADF). Compared with the AH diet, the cows fed the 6% SH diet had a higher milk yield and concentration of milk fat. Fecal and urinary nitrogen (N) were lower in cows fed a 6% SH diet than in cows fed the AH diet. Milk N secretion and milk N as a percentage of N intake were higher in cows fed a 6% SH diet than in cows fed AH diets. The concentration of ruminal volatile fatty acids, acetic acid, and ammonia-N were higher in cows fed a 6% SH diet than in cows fed an AH diet. By comparison, the 12% SH group did not affect milk yield, milk composition, N utilization, and rumen fermentation compared with the AH and 6% SH groups. In conclusion, it appears that feeding 6% SH, replacing a portion of AH, may improve lactation performance and N utilization for lactating dairy cows.
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影响因子：
3.5
作者：
Cherif, C.;Hassanat, F.;Benchaar, C.
通讯作者：
Benchaar, C.
DOI：
10.2174/1871525718666200207105436
发表时间：
2020-01-01
影响因子：
--
作者：
Arumugam, Balakrishnan;Subramaniam, Arunambiga;Alagaraj, Praveena
通讯作者：
Alagaraj, Praveena
影响因子：
6.1
作者：
Geuns, JMC;Bruggeman, V;Buyse, JG
通讯作者：
Buyse, JG
影响因子：
2.4
作者：
Pirgozliev, Vasil;Kljak, Kristina;Stringhini, Jose Henrique
通讯作者：
Stringhini, Jose Henrique
影响因子：
4
作者：
Rotimi, Solomon Oladapo;Rotimi, Oluwakemi Anuoluwapo;Okungbaye, Rotimi
通讯作者：
Okungbaye, Rotimi