Effect of Dietary Rubber Leaves and Probiotics “Bacillus pumilus St. L1” on Blood Profile, Milk Yield and Milk Quality in Goats

This study aims to evaluate the potential of rubber leaves (RL) as an alternative feed ingredient supplemented with Bacillus pumilus St. L1 probiotics in diets on the hemogram profile and milk production and quality of etawah crossbred (EC) goats.

This study used twelve lactating EC goats. The treatment diets were T0: 60% native grass (NG) + 40% concentrate (CON). T1: 45% NG + 15% RL + 40 CON + 1% probiotics. T2: 30% NG + 30% RL + 40% CON + 1% probiotics. T3: 15% NG + 45% RL + 40 CON + 1% probiotics. The experiment was conducted in a randomized block design (RBD). Probiotics Bacillus pumilus St. L1 (2.8 × 10¹⁷ cfu/ml) supplement as 1% based on the dry matter. The parameters observed were dry matter intake (DMI), milk production, milk quality, feed efficiency and blood profile (erythrocytes and Hematocrit. Analysed variance was applied and the differences between treatments were measured using Duncan's multiple.

Including RL and probiotics in the diets showed a significant (P<0.05) improvement in DMI, milk production, milk quality and blood profile. The research results showed an increase in DMI with an average of 597.92 - 890.84 g/head/day, milk production 265.49- 360.24 g/head/day and feed efficiency 37.19 - 39.87%. Normal blood profile (erythrocytes 8.300 - 9.210 × 10₆/μL, Hematocrit 26.500 - 34.000%, Hemoglobin 8.133 -9.500 g/dL; Leukocytes 10.758 - 13.308 10₃/mm³). The use of 45% RL and probiotics in the diet was significantly higher (P<0.05) than other treatments.