Efficiency of peroraly administered culture of Lactobacillus fermentum to the subacute rumen acidosis affected cows | Lactobacillus fermentum kultūras perorālas pielietošanas efektivitāte ar subakūto spurekļa acidozi slimām slaucamajām govīm
2018
Liepa, L., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Veterinary Medicine | Viduza, M., Latvijas Veterinārārstu biedrība, Riga (Latvia)
The culture of Lactobacillus fermentum was isolated from the biogas substrate within the framework of the State Research Project (AgroBioRes) No. 2014.10–4/VPP–7/5. The aim was to evaluate the efficiency of perorally applied L. fermentum additive to control subacute rumen acidosis in a dairy herd. The experiment was performed in an early lactation group in the herd of 240 dairy cows. A control (C) and an experimental (E) group consisted of 10 cows each with milk fat/protein ratio 0.95–1.13, milk fat below 3.00%. On days 1–5 (D1–D5), E cows received orally 150 mL of L. fermentum product of 8.1x105KVV mLE-1. On D1, D2, D5 and D20, the rumen fluid samples were collected from all animals in both groups with an oesophageal rumen probe once per day for detection of pH and concentration of volatile fatty acids, but on D1, D5 and D20 blood samples for biochemical analyses were collected. The data were analysed using Microsoft Excel. The results showed that significant changes in the concentration of the liver enzymes AST and GGT. On D1, E animals AST concentration was significantly (p is less than 0.05) higher 100.5±14.0 IU LE-1 than C cows – 51.4±5.7 IU LE-1. On D20, AST reduced significantly only in E cows – 40.6±5.07 IU LE-1. GGT concentration in E animals on D1 was significantly (p is less than 0.05) higher 31.5±6.91 IU LE-1 l than in C cows –13.6±1.53 IU LE-1 , but on D5 GGT concentration of E animals reduced significantly (p is less than 0.05) to 18.4±6.41 IU LE-1, and remained to D20. The conclusion is that L. fermentum culture administered orally for five days improved the blood liver enzymes in cows, and the effect lasted for two weeks.
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