Kumprechtová Dana, Legendre Héloïse, Kadek Romana, Nenov Valentin, Briche Maxime, Salah Nizar, Illek Josef
Nutrition and Feeding of Farm Animals, Institute of Animal Science, Praha Uhříněves, 104 00, Czech Republic.
Phileo by Lesaffre, Marquette-lez-Lille, 59520, France.
Transl Anim Sci. 2023 Dec 14;8:txad132. doi: 10.1093/tas/txad132. eCollection 2024.
The study evaluated the dose effect of dietary supplementation with yeast probiotic (CNCM I-4407, 10 CFU/g, Actisaf Sc 47; Phileo by Lesaffre, France) on production, energy metabolism, and reproduction in lactating dairy cows. About 117 multiparous Holstein cows from 3 to 60 d in milk held in a barn with an automatic milking system were enrolled in a randomized complete block design and blocked according to calving day, parity, and previous milk yield. The cows were assigned to a basal diet (15% CP, 22% starch) plus either 5 g (Y5 group, = 39), 10 g (Y10 group, = 39), or 0 g (CON, = 39) of yeast probiotic, presented on top of concentrate fed in the robot. Milk yield and body weight were recorded daily, milk composition, and somatic cell count () every 2 wk, and body condition score () was estimated at days -14, 14, and 40 post-calving. Data were analyzed using a linear mixed model. The Y10 group showed an increased average daily yield of energy-corrected milk () over CON (+3.5 kg, < 0.05) and Y5 (+0.8 kg). There were no significant differences between the groups in milk fat, milk protein, milk SCC linear score, milk urea, blood beta-hydroxy-butyric acid levels, and BCS. Body weight loss from 3 to 90 d in milk was numerically lower (13.8 kg) in Y5 than in CON (25.3 kg), and the success rate from the first insemination was the highest in YP5 and YP10 groups (39%) than in Control (26%). The yeast probiotic supplementation to early lactation high-producing dairy cows showed a clear effect of the high dose (10 g) on ECM milk production, although the lower dose (5 g) showed only numerical ECM production increase, both doses displayed better use of energy from the diet than the control and suggest a better resource efficiency.
本研究评估了日粮添加酵母益生菌（CNCM I - 4407，10 CFU/g，Actisaf Sc 47；法国乐斯福公司生产）对泌乳奶牛生产性能、能量代谢和繁殖性能的剂量效应。约117头处于产奶3至60天的经产荷斯坦奶牛被纳入随机完全区组设计，这些奶牛饲养在配有自动挤奶系统的牛舍中，并根据产犊日期、胎次和先前产奶量进行区组划分。奶牛被分配到基础日粮（15%粗蛋白，22%淀粉）组，再分别添加5克（Y5组，n = 39）、10克（Y10组，n = 39）或0克（对照组，n = 39）酵母益生菌，将其添加在机器人投喂的精料之上。每天记录产奶量和体重，每2周记录一次牛奶成分和体细胞计数（SCC），并在产后 - 14天、14天和40天评估体况评分（BCS）。数据采用线性混合模型进行分析。Y10组的能量校正奶（ECM）平均日产量高于对照组（增加3.5千克，P < 0.05）和Y5组（增加0.8千克）。各组在乳脂肪、乳蛋白、牛奶SCC线性评分、牛奶尿素、血液β - 羟基丁酸水平和BCS方面无显著差异。Y5组在产奶3至90天的体重损失数值上低于对照组（13.8千克对对照组的25.3千克），且Y5组和Y10组首次输精的成功率最高（39%），高于对照组（26%）。对早期泌乳的高产奶牛补充酵母益生菌显示，高剂量（10克）对ECM产量有明显影响，尽管低剂量（5克）仅使ECM产量有数值上的增加，但两种剂量均比对照组更有效地利用了日粮中的能量，表明资源利用效率更高。
