Effect of viable yeast culture Yea-Sacc**1026 supplementation on performance of dairy cows during a grazing season
2003
Kravale, D. | Bluzmanis, J. | Beca, M. (Latvia Univ. of Agriculture, Sigulda (Latvia). Research Centre "Sigra")
Yeasts are safe and natural products and their use as feed additives is promising for the future. Live yeast is used as probiotic to enhance gastro-intestinal function and health. Yeast removes oxygen, thereby maintaining rumen's anaerobic conditions. It is important as cellulolytic bacteria are inhibited by oxygen. Additionally, yeast is sugar utiliser thus avoiding acidosis and pH fluctuations. Yea-Sacc**1026 secretes peptides, which stimulate eight beneficial bacteria in the rumen. Zootechnical and economical effect of viable yeast culture Yea-Sacc**1026 (contains viable Saccharomyces cerevisiae strain 1026) was evaluated during a grazing season. Experimental diets of cows involved comparison between 2 types of concentrate: experimental - with Yea-Sacc**1026 supplements and control (unsupplemented). Cows offered Yea-Sacc**1026 produced on average, 15.9 kg of milk and it was by 0.5 kg more than the milk yield of cows offered concentrate without supplement, however difference was not significant (p0.05). ECM yield was 17.1 kg and 16.5 kg, respectively. Response to supplementation was 3.6% increase in milk production. The results of the experiment indicate that Yea-Sacc**1026 did not affect protein and fat content of milk production. The results of the experiment indicate that Yea-Sacc**1026 did not affect protein and fat content of milk. The blood biochemical and morphological indices changed similary in both groups of cows during the experiment. Profitability of Yea-Sacc**1026 was 0.039 LVL cow*[-1) day*[-1) or 5.97 LVL cow*[-1) per grazing season.
Показать больше [+] Меньше [-]