Due to numerically higher milk fat percentage, SC cows
produced 1.8 kg more FCM per day. Similarly, Putnam et al.
(1997) showed that 4% FCM of cows in early lactation
tended to increase (28.4 vs. 26.5 kg) when diets were
supplemented with 10 g/d of a yeast culture. Also in the
study of Wang et al. (2001), amounts of milk and FCM
during the first 30 days in milk were 2.5 kg higher in cows
receiving a yeast culture supplement in diets containing
21% forage NDF. Numerical increases in milk fat
percentage have been observed after yeast supplementation
in some trials with dairy cows (Piva et al., 1993; Robinson,
1997; Erasmus et al., 2005). Increased digestibility of NDF
in the SC treatment explains the 0.2 percentage unit
increase in milk fat percentage observed in this trial.
Due to numerically higher milk fat percentage, SC cowsproduced 1.8 kg more FCM per day. Similarly, Putnam et al.(1997) showed that 4% FCM of cows in early lactationtended to increase (28.4 vs. 26.5 kg) when diets weresupplemented with 10 g/d of a yeast culture. Also in thestudy of Wang et al. (2001), amounts of milk and FCMduring the first 30 days in milk were 2.5 kg higher in cowsreceiving a yeast culture supplement in diets containing21% forage NDF. Numerical increases in milk fatpercentage have been observed after yeast supplementationin some trials with dairy cows (Piva et al., 1993; Robinson,1997; Erasmus et al., 2005). Increased digestibility of NDFin the SC treatment explains the 0.2 percentage unitincrease in milk fat percentage observed in this trial.
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