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Effects of feeding Saccharomyces cerevisiae fermentation products on the health and growth performance of Holstein dairy calves through 4 months of age.

R. N. Klopp

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06-22-2020

Abstract:

49
Effects of feeding Saccharomyces cerevisiae fermentation products on the health and growth performance of Holstein dairy calves through 4 months of age.
R. N. Klopp*1, I. Yoon2, J. P. Boerman1. 1Purdue University Department of Animal Sciences West Lafayette, IN, 2Diamond V Cedar Rapids, IA.

Our objective was to evaluate the effect of Saccharomyces cerevisiae fermentation products (SCFP) on growth and health of calves in the first 4 mo of life. Holstein bull calves were blocked by BW and serum total protein and assigned to 1 of 2 treatments; CON (24% CP:17% fat milk replacer (MR), 18% CP starter, 18% CP grower, and 16% CP grower with no SCFP added) or SCFP (24% CP:17% fat MR with 1 g/d of SmartCare (Diamond V), 18% CP starter with 0.8% NutriTek (Diamond V), 18% CP grower with 0.44% NutriTek, and 16% CP grower with 0.275% NutriTek). Calves were offered 2.84 L (12.5% solids) of MR twice daily (0630 and 1630 h) through d 51, from d 52—56 calves were fed MR once daily (0630 h), and weaned on d 56. From d 1—56, calves received ad libitum access to a texturized calf starter and water. On d 57, calves were switched to an 18% CP grower and on d 71, calves were switched to a 16% CP grower. Individual calf BW, BCS, hip height (HH), and hip width (HW) were measured biweekly from d 0—112. Intake was recorded daily and feed efficiency (FE) and ADG were calculated. Daily fecal and respiratory scores were recorded for each calf through d 56 and all medical treatments were recorded for the duration of the study and grouped based on illness. Data were analyzed as a completely randomized block design in SAS v.9.4 with repeated measures when applicable. No treatment effect was observed for BW, BCS, HH, or HW at d 0, d 56, or d 112 (all P ≥ 0.11). A treatment tendency was observed for post-weaning ADG (P = 0.07) with SCFP calves having higher ADG compared with CON calves. SCFP calves had improved FE compared with CON post-weaning (P = 0.02). A treatment effect was seen for respiratory illness (P = 0.001), with SCFP calves being treated less frequently than CON (0.95 vs. 0.31 treatments/calf). This study suggests that feeding Saccharomyces cerevisiae fermentation products to calves could improve ADG and FE post-weaning as well as reduce the incidence of respiratory disease through 4 mo of life.

Keywords: calf health, Saccharomyces cerevisiae fermentation product, growth.