Effects of cassava leaves pellet replacing concentrate on rumen fermentation, milk yield and milk composition of dairy cows
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The objective of this study was to investigate the effects of cassava leaves pellet replacing concentrate on rumen fermentation milk yield and milk composition of dairy cows. Four lactating Holstein Friesian crossbred dairy cows with average body weight 426.00 ± 19.03 kg, days-in-milk (DIM) 75 ± 36 day and milk production 17.32 ± 3.59 kg. The 4x4 Latin square design was conducted in 21 days with a 14-day animal adjustment period and a 7-day data collection period. Treatments were dietary replacement of cassava leaves pellet for concentrate at levels of 0 10 20 and 30 % respectively. The results found that the effects of cassava leaves pellet replacing concentrate has no effect on dry matter intake, nutrient digestibility, ruminal pH, ammonia nitrogen in rumen, blood urea nitrogen and milk compositions (P > 0.05). The effects of cassava leaves pellet replacing concentrate at 10 and 20 % have no effect on milk yield and blood glucose (P > 0.05), but milk yield and blood glucose were decreased by replacing 30 % of concentrate with cassava leaves pellet (P < 0.05). Therefore, cassava leaves pellet can successfully replace concentrate up to 20 % without affecting the production of dairy cows.
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