scholarly journals Effects of Different Levels of Effective Fiber in Close-up Cows Diets on Intake and Chewing Activity and Subsequent Lactation Performance in Holstein Dairy Cows

2010 ◽  
Vol 9 (12) ◽  
pp. 1785-1790 ◽  
Author(s):  
V. Keshavarz ◽  
H. Amanlou ◽  
A. Nikkhah ◽  
M. Dehghan Ba ◽  
E. Mahjoobi ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Lactation Performance ◽  
Chewing Activity ◽  
Different Levels ◽  
Holstein Dairy Cows

Effects of feeding yeast (Saccharomyces cerevisiae) on productive performance and blood components of lactating Holstein dairy cows

2003 ◽  
Vol 2003 ◽  
pp. 106-106
Author(s):  
M. Dehghan Banadaky ◽  
A. Nik Khah ◽  
A. Zali
Keyword(s):  
Dairy Cows ◽  
Dairy Production ◽  
Yeast Culture ◽  
Blood Components ◽  
Productive Performance ◽  
Yeast Saccharomyces Cerevisiae ◽  
Natural Modes ◽  
Animal Feeding ◽  
Different Levels ◽  
Holstein Dairy Cows

Antibiotics have widely been used in animal feeding. However, because of the growing concern of consumers towards more natural modes of production, interest in the use of direct fed microbials is now considerable. In dairy production, the Yeast culture (Saccharomyces cerevisiae) has been studied and used. Therefore, an experiment was conducted to evaluate the effects of different levels of yeast (Saccharomyces cerevisiae SC47) on productive performonce of Holstein dairy cows.

The effect of rumen-protected methionine and choline on plasma metabolites of Holstein dairy cows

2011 ◽  
Vol 149 (5) ◽  
pp. 639-646 ◽  
Author(s):  
M. ARDALAN ◽  
M. DEHGHAN-BANADAKY ◽  
K. REZAYAZDI ◽  
N. GHAVI HOSSEIN-ZADEH
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Plasma Metabolites ◽  
Lactation Performance ◽  
Plasma Nefa ◽  
Plasma Urea ◽  
Nonesterified Fatty Acids ◽  
Plasma Triglycerides ◽  
Holstein Dairy Cows

SUMMARYForty Holstein dairy cows in their first and second lactations were used from 4 weeks prepartum to 10 weeks postpartum to investigate the effects of feeding ruminally protected methionine and choline on plasma metabolites. Cows were randomly assigned to one of the following treatments in a 2×2 factorial design 4 weeks before their expected calving dates, using randomized blocks based on parity: no supplement (control), 18 g/d of rumen-protected methionine (RPM) product, 60 g/d of rumen-protected choline (RPC) product, or 18 g/d of RPM+60 g/d of RPC. Treatments did not affect plasma triglycerides, glucose, total protein, nonesterified fatty acids (NEFA), β-hydroxybutyrate (BHBA), plasma urea nitrogen (PUN) or aspartate aminotransferase (AST) during the prepartum period. For postpartum plasma NEFA concentrations, there were interactions between RPC or RPM and week postpartum. Feeding RPM increased plasma AST concentrations (P<0·05) and decreased plasma protein concentrations (P<0·05) in postpartum cows. After calving, feeding RPC increased (P<0·05) dry matter intake (DMI), milk yield, 40 g/kg fat-corrected milk (FCM) yield and energy-corrected milk (ECM) yield. This suggests that supplemental RPC can improve lactation performance of dairy cows.

1244 Relationships between birth season versus early life starter intake and growth and first lactation performance of Holstein dairy cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 599-599
Author(s):  
B. J. Heins ◽  
D. Ziegler ◽  
D. Schimek ◽  
S. E. Schuling ◽  
B. Ziegler ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Early Life ◽  
Lactation Performance ◽  
Birth Season ◽  
Holstein Dairy Cows
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