TY  - JOUR
T1  - Effects of Live Yeast and <I>Aspergillus niger</I> Meal Extracted Supplementation on Milk Yield, Feed Efficiency and Nutrients  Digestibility in Holstein Lactating Cows
AU - Zali, A. AU - Rezayazdi, K. AU - Dehghan Banadaky, M. AU - Heidari Khormizi, S.R. 
JO  - Journal of Animal and Veterinary Advances
VL  - 9
IS  - 14
SP  - 1934
EP  - 1939
PY  - 2010
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2010.1934.1939
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2010.1934.1939
KW  - feed efficiency
KW  -milk yield
KW  -Aspergillus niger meal extracted
KW  -Live yeast
KW  -digestibility
KW  -lactating cows
AB  - Twenty four Holstein cows in early lactation (days in milk: 24&plusmn;4) were allocated equally to one of four treatments. Treatments were as follows: control basal diet without supplement; LY basal diet supplemented with 10 g of live yeast; ANX basal diet supplemented with 30 g of <I>Aspergillus niger</I> extracted meal and LY+ANX basal diet supplemented with 10 g LY and 30 g ANX. Daily individual milk production and feed intake recorded and weekly milk samples were taken for milk composition analyse. Fecal grab samples were collected during 3 consecutive days at the end of experiment period from each cow. The experimental period lasted 75 days. Milk production was improved by 6.8% for group fed the LY compared control diet (p&lt;0.05). Fat-corrected milk, feed efficiency, body weight and body condition score changes and DM intake were similar between groups. Greater protein yield and percentage were observed in the LY and LY+ANX groups compared to the control group (p&lt;0.05). No differences were observed in other milk composition between groups. The apparent digestibility of DM and OM were higher (p&lt;0.05) in the LY+ANX supplemented diet compared to the control. Similar to DM and organic matter digestibility, greater NDF apparent digestibility was observed in the LY+ANX supplemented diet versus the control that might be due to synergistic effects of feeding LY and ANX together. We concluded that LY might have potential as an effective direct-fed microbial to increase milk production in early lactating cows.
ER  -