Least square means of NEFA of plasma of the treatments LRUP, MRUP and HRUP were 0.
HRUP = high RUP diet, MRUP = medium RUP diet, LRUP = low RUP diet, MUN = milk urea nitrogen, FM = fish meal, CGM = corn gluten meal, SBM = soybean meal, MP = metabolizable protein, NEB = negative energy balance, NEFA = non esterified fatty acids, [beta]HBA = beta hydroxy butyrate.
Table 1: Ingredients of Experimental Diets (%DM) (1) Feedstuffs LRUP MRUP HRUP Alfalfa hay 26.
Decreased DMI by buffaloes fed LRUP diet was due to the high degradable protein portion of this diet.
Higher DM digestibility in buffaloes fed LRUP diet might be attributed to longer rumen retention time due to decreased DMI.
Fat yield was higher in buffaloes fed HRUP diet than in those fed LRUP and MRUP diets.
Higher N intake in buffaloes fed HRUP diet than in those fed MRUP and LRUP diets was due to their higher DMI.
Moreover, higher BUN values in buffaloes fed MRUP and LRUP diets were because of a higher level of RDP in their diets.
Although days open did not differ significantly across treatments, shorter days open were observed in buffaloes fed HRUP diet than those fed MRUP or LRUP diets.
Lower conception rates in buffaloes fed MRUP and LRUP diets were due to lower DMI because of higher RDP intake (Table 2).