TY  - JOUR
T1  - Rumen Microbial Protein Synthesis and Milk Performance in Lactating Dairy Cows Fed the Fortified Corn Stover Diet in Comparison with Alfalfa Diet
AU - Wu, Yueming AU - Zhu, Wen AU - , Chenhuan Tang AU - , Xiaoping Sun AU - , Jianxin Liu AU - , Yaoming Yuan AU - , Xinkai Zhang 
JO  - Journal of Animal and Veterinary Advances
VL  - 12
IS  - 5
SP  - 633
EP  - 639
PY  - 2013
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2013.633.639
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2013.633.639
KW  - Corn stover
KW  -starch
KW  -rumen-protected amino acid
KW  -lactation performance
KW  -dairy cow
AB  - The objective of this study was to compare the rumen microbial 
  protein synthesis and milk performance in lactating dairy cows fed the fortified 
  corn stover diet with alfalfa diet. Twelve multiparous Holstein lactating cows 
  were used in a 3x3 Latin square design involving three diets with different 
  forage ingredients: Alfalfa (AH), Corn Stover Supplemented with starch (CSS) 
  and CSS supplemented with rumen-protected methionine and lysine (CSSAA). The 
  basal diets were isonitrogenous and isocaloric with a ratio of forage to concentrate 
  of 45:55 (Dry Matter (DM) basis). The daily DM intake (p = 0.68) and milk yield 
  (p = 0.20) did not differ among the treatments. Compared with CSS, supplementation 
  of Rumen Protected Amino Acid (RPAA) increased the 4% fat-corrected milk (p 
  = 0.06) and milk efficiency (p = 0.08). Milk protein yield was higher (p = 0.07) 
  for cows fed AH than those fed CSS with CSSAA at an intermediate position. Ruminal 
  ammonia nitrogen concentrations (p<0.01) for AH diet was lower than for CSS 
  and CSSAA. Total volatile fatty acids concentration (p = 0.65), microbial protein 
  yield (p = 0.71) and metabolizable protein (p = 0.61) did not differ among the 
  treatments. Lower N conversion (p<0.01) was detected for CSS than AH and 
  CSSAA. It is indicated that supplementation of starch and amino acid to a corn 
  stover diet achieve a similar lactation performance as the cows fed alfalfa 
  diet.
ER  -