Intakes of DM, NDF, and CP were not influenced
by dietary treatments (Table 2). Martel et al. (2011)
found no effect of dietary molasses (up to 5% of the
diet DM) on DMI of lactating cows, which agrees with
our findings. Similarly, Morales et al. (1989) found no
effect of cane molasses (up to 8% of diet DM) on DMI
of lactating cows fed 60% alfalfa haylage. Broderick and
Radloff (2004) reported that feeding a diet containing
3% liquid molasses improved DMI of lactating cows,
whereas feeding a diet with 4% dried molasses had no
effect.
Milk yield was not influenced by dietary treatments
and averaged 32.9 kg/d (Table 2). The effect of molasses
on milk yield of dairy cows is inconsistent. Martel
et al. (2011) reported that dietary molasses (up to 5%
of the diet DM) decreased milk yield and milk protein
yield. Feeding dietary molasses with alfalfa silage-based
diets up to 8% of the diet DM had no effect on milk and
protein yields (Broderick and Radloff, 2004). However,
both traits were adversely affected by a higher inclusion
level. Added molasses reduced milk yield with 35% alfalfa
haylage diet, but no effect was observed with 65%
alfalfa haylage diet (Morales et al., 1989). However,
milk protein concentration and yield linearly declined
with molasses feeding, suggesting that MP supply may
have limited milk protein synthesis as a result of molasses
supplementation.
Intakes of DM, NDF, and CP were not influenced
by dietary treatments (Table 2). Martel et al. (2011)
found no effect of dietary molasses (up to 5% of the
diet DM) on DMI of lactating cows, which agrees with
our findings. Similarly, Morales et al. (1989) found no
effect of cane molasses (up to 8% of diet DM) on DMI
of lactating cows fed 60% alfalfa haylage. Broderick and
Radloff (2004) reported that feeding a diet containing
3% liquid molasses improved DMI of lactating cows,
whereas feeding a diet with 4% dried molasses had no
effect.
Milk yield was not influenced by dietary treatments
and averaged 32.9 kg/d (Table 2). The effect of molasses
on milk yield of dairy cows is inconsistent. Martel
et al. (2011) reported that dietary molasses (up to 5%
of the diet DM) decreased milk yield and milk protein
yield. Feeding dietary molasses with alfalfa silage-based
diets up to 8% of the diet DM had no effect on milk and
protein yields (Broderick and Radloff, 2004). However,
both traits were adversely affected by a higher inclusion
level. Added molasses reduced milk yield with 35% alfalfa
haylage diet, but no effect was observed with 65%
alfalfa haylage diet (Morales et al., 1989). However,
milk protein concentration and yield linearly declined
with molasses feeding, suggesting that MP supply may
have limited milk protein synthesis as a result of molasses
supplementation.
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