TY - JOUR
T1 - The effect of number of daily meals for daily cows on milk yield and composition
AU - Shabi, Z.
AU - Bruckental, I.
AU - Tagari, H.
AU - Zamwel, S.
AU - Adin, G.
AU - Arieli, A.
PY - 1998
Y1 - 1998
N2 - The effect of the number of daily meals on milk yield and composition was studied in a commerial dairy herd. One hundred and eighty Israeli Holstein cows were divided into two groups. One group was given one meal daily and the second group three meals daily. Feeding frequency had no effect on DM intake, milk yield or milk composition. Total VFA and molar proportion of acetate were higher before feeding than 3 h later. The decrease in molar proportion of acetate after feeding was greater in the cows given one meal daily. The propionate molar proportion was higher before feeding and lower 3 h later if cows were given three meals daily. As a result, the acetate to propionate ratio was lower in cows fed three meals daily before feeding and rose after 3 h. Ruminal ammonia-N concentrations, before and after feeding, were lower when cows were fed three meals daily. Plasma urea-N concentrations were higher before feeding, as compared with 3 h later. Plasma urea-N was higher for the one meal treatment, but significantly only 3 h after the morning meal. It is suggested that increasing feeding frequency may improve dietary nitrogen utilization and may shift metabolism towards more gluconeogenesis. Production responses to more frequent feeding are more likely to be revealed in high yielding dairy cows, maintained on high concentrate diets.
AB - The effect of the number of daily meals on milk yield and composition was studied in a commerial dairy herd. One hundred and eighty Israeli Holstein cows were divided into two groups. One group was given one meal daily and the second group three meals daily. Feeding frequency had no effect on DM intake, milk yield or milk composition. Total VFA and molar proportion of acetate were higher before feeding than 3 h later. The decrease in molar proportion of acetate after feeding was greater in the cows given one meal daily. The propionate molar proportion was higher before feeding and lower 3 h later if cows were given three meals daily. As a result, the acetate to propionate ratio was lower in cows fed three meals daily before feeding and rose after 3 h. Ruminal ammonia-N concentrations, before and after feeding, were lower when cows were fed three meals daily. Plasma urea-N concentrations were higher before feeding, as compared with 3 h later. Plasma urea-N was higher for the one meal treatment, but significantly only 3 h after the morning meal. It is suggested that increasing feeding frequency may improve dietary nitrogen utilization and may shift metabolism towards more gluconeogenesis. Production responses to more frequent feeding are more likely to be revealed in high yielding dairy cows, maintained on high concentrate diets.
KW - Dairy cows
KW - Feeding frequency
KW - Rumen
UR - http://www.scopus.com/inward/record.url?scp=0039258275&partnerID=8YFLogxK
U2 - 10.22358/jafs/69300/1998
DO - 10.22358/jafs/69300/1998
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AN - SCOPUS:0039258275
SN - 1230-1388
VL - 7
SP - 249
EP - 259
JO - Journal of Animal and Feed Sciences
JF - Journal of Animal and Feed Sciences
IS - 3
ER -