Efecto del uso de probióticos sobre la salud y la calidad de leche en vacas Holstein Friesian en lactancia

Abstract

The aim of this research was to determine the effect of probiotics on the health and milk quality of Holstein cows. The treatments were as follows: T1 control; T2 basal diet plus 50 ml of probiotic containing L. acidophilus and L. bulgaricus; T3 basal diet plus 50 ml of probiotic containing K. fragilis and S. cerevisiae. These treatments were repeated 6 times over 75 days. A Completely Randomized Design was used. Red blood cells, white blood cells, hemoglobin, mean corpuscular volume, and platelets were measured. Cholesterol, total proteins, and aspartate aminotransferase were also measured. The red blood cell count was higher for T1 (P<0.10) at day 0 with 10.15 × 10^9/L. Platelets were higher in T2 at day 0 with 375.83 × 10^9/L and higher for T3 at day 75 with 366.50 × 10^9/L (P<0.10). Hemoglobin was high in T1 (P<0.10) at day 45 with 103.17 × 10^9/L. At 60 days, T3 showed higher milk quality (P<0.10) in fat with 3.52%, protein 3.13%, lactose 4.80%, and non-fat solids 8.72%. T3 also showed higher values at 75 days (P<0.10), in fat 3.67%, protein 3.22%, non-fat solids 8.88%, total solids 12.55%, and salts 0.67%. The potential use of probiotic biopreparations with antimicrobial activity in animal feed production of zootechnical interest is confirmed, in addition to their effects on milk quality, hematological, and blood biochemical indicators in dairy cows in the first third of lactation; showing changes in the final days of the trial