Salah Nizar, Legendre Héloïse, Nenov Valentin, Briche Maxime, Serieys Flore, Grossi Silvia, Sgoifo Rossi Carlo Angelo
Phileo by Lesaffre, 137 rue Gabriel Péri, 59700 Marcq-en-Baroeul, France.
l'INP ENSAT Avenue de l'Agrobiopole, 31326 Auzeville-Tolosane, France.
Vet Anim Sci. 2023 Dec 23;23:100329. doi: 10.1016/j.vas.2023.100329. eCollection 2024 Mar.
The goal of calf feeding systems is to provide calves with optimum nutrition to promote growth, health, and future milk production and to reduce antibiotic use which leads to a need for alternatives that reduce illness and promote growth in dairy calves. We hypothesized that feeding live yeast would improve gastrointestinal health and growth performance of calves. The aim of this study was then to evaluate the effects of supplementing a yeast probiotic (CNCM I-4407, 10 CFU/g, Actisaf® Sc47 powder; Phileo by Lesaffre, France) in milk replacers (MR), on health and growth of pre-weaned calves. Forty Holstein female calves were used during this trial. Each calf was weighed at 3 days of age and then introduced in the trial. Calves were randomly assigned to 2 groups ( = 20/group) and were fed MR without (control; CON) or with yeast probiotic at 1 g/calf/d (experimental; EXP). Milk replacer (12.5 % solids) was offered twice a day until 66 days of age (DOA). Body Weight (BW), wither height, hip width, body length and chest girth were collected in day 3 and day 66. Compared to CON, calves supplemented with yeast probiotic had better average daily gain (ADG, 0.456 ± 0.1 0.556 ± 0.09 kg/d, < 0.05). There was no difference ( 0.05) in both starter and MR intake between the two groups. Feed efficiency was better ( < 0.05) in the EXP group (2.18 ± 0.53) compared to CON (2.63 ± 0.78). No statistical differences were found between groups even if the lower total morbidity (40.91 % in the CON vs 19.05 % in EXP) and incidence of gastrointestinal disorders (36.36 % in the CON vs. 14.29 % in EXP) were observed in calves supplemented with yeast probiotic. The severity of diarrhea was numerically lower in calves supplemented with yeast probiotic. No severe cases of respiratory disorders were highlighted in the present trial. The cost/kg of gain was higher ( 0.05) in CON compared to EXP group. Total expenses linked to feeds and veterinary treatments were higher in CON compared to EXP group. During the study, the use 1 g/d of yeast probiotic allows to save 32.86 €/calf. It could be concluded that supplementing Actisaf® powder (Actisaf® SC 47 PWD) in MR improved health, growth performance, feed efficiency, and reduced the expenses linked to feeds and veterinary treatments.
犊牛饲养系统的目标是为犊牛提供最佳营养，以促进生长、健康和未来的产奶量，并减少抗生素的使用，这就需要有替代方案来减少奶牛犊牛的疾病并促进其生长。我们假设饲喂活酵母会改善犊牛的胃肠道健康和生长性能。本研究的目的是评估在代乳粉（MR）中添加酵母益生菌（CNCM I - 4407，10 CFU/g，Actisaf® Sc47粉末；法国乐斯福公司的菲力奥）对断奶前犊牛健康和生长的影响。本试验使用了40头荷斯坦雌性犊牛。每头犊牛在3日龄时称重，然后进入试验。犊牛被随机分为2组（每组n = 20），分别饲喂不含酵母益生菌的代乳粉（对照组；CON）或含1 g/头/天酵母益生菌的代乳粉（试验组；EXP）。每天两次提供代乳粉（12.5%固体成分），直至66日龄（DOA）。在第3天和第66天收集体重（BW）、鬐甲高度、臀宽、体长和胸围。与对照组相比，补充酵母益生菌的犊牛平均日增重更好（ADG，0.456±0.1对0.556±0.09 kg/天，P < 0.05）。两组之间的开食料和代乳粉摄入量均无差异（P > 0.05）。试验组的饲料效率（2.18±0.53）优于对照组（2.63±0.78）（P < 0.05）。即使在补充酵母益生菌的犊牛中观察到总发病率较低（对照组为40.91%，试验组为19.05%）和胃肠道疾病发病率较低（对照组为36.36%，试验组为14.29%），两组之间也未发现统计学差异。补充酵母益生菌的犊牛腹泻严重程度在数值上较低。本试验中未发现严重的呼吸道疾病病例。对照组每千克增重的成本高于试验组（P > 0.05）。与试验组相比，对照组与饲料和兽医治疗相关的总费用更高。在研究期间，每天使用1 g酵母益生菌可节省32.86欧元/头犊牛。可以得出结论，在代乳粉中添加Actisaf®粉末（Actisaf® SC 47 PWD）可改善健康、生长性能、饲料效率，并降低与饲料和兽医治疗相关的费用。
