scholarly journals Effects on lactating dairy cows of oscillating dietary concentrations of unsaturated and total long-chain fatty acids

2013 ◽  
Vol 96 (1) ◽  
pp. 506-514 ◽  
Author(s):  
W.P. Weiss ◽  
D.E. Shoemaker ◽  
L.R. McBeth ◽  
N.R. St-Pierre
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Long Chain Fatty Acids ◽  
Lactating Dairy Cows ◽  
Long Chain ◽  
Chain Fatty Acids

scholarly journals Effect of Whole Cottonseeds and Calcium Salts of Long-Chain Fatty Acids on Performance of Lactating Dairy Cows

1995 ◽  
Vol 78 (1) ◽  
pp. 181-193 ◽  
Author(s):  
J.H. Harrison ◽  
R.L. Kincaid ◽  
J.P. McNamara ◽  
S. Waltner ◽  
K.A. Loney ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Long Chain Fatty Acids ◽  
Calcium Salts ◽  
Lactating Dairy Cows ◽  
Long Chain ◽  
Chain Fatty Acids

The effect of a blend of dietary unesterified and saturated long-chain fatty acids on the performance of dairy cows in mid-lactation

1990 ◽  
Vol 41 (1) ◽  
pp. 129 ◽  
Author(s):  
KR King ◽  
CR Stockdale ◽  
TE Trigg
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Fat ◽  
Chain Fatty Acid ◽  
Long Chain Fatty Acids ◽  
Long Chain Fatty Acid ◽  
Long Chain ◽  
Chain Fatty Acids

This experiment studied the effects of feeding a supplement of a blend of unesterified and saturated long-chain fatty acids on the productivity of dairy cows in mid-lactation. Twenty-three cows in their fourth month of lactation were individually fed ad libitum, a mixed balanced ration based on maize silage, lucerne hay and rolled grain. Varying quantities, up to 1020 g cow-1 day-1 of the fatty acid supplement, were mixed into the ration. Yields of milk and milk products were linearly related to total long-chain fatty acid intake. Milk fat content increased linearly while milk protein content averaged 3.59 (s.d. � 0.15)%. The marginal returns from feeding 1 kg of the supplement were 3.3 kg milk, 0.33 kg fat and 0.07 kg protein. The proportions of C 10:0, C12:0 and C 14:0 fatty acids in milk were decreased, while those of C 18:0 and C18:1 were increased as the result of feeding long-chain fatty acids. The concentration of lipid in plasma was increased, but acetate and D-(3)-hydroxybutyrate levels in blood remained unchanged with increased levels of dietary long-chain fatty acid. Efficiency of milk production was increased by 11% from feeding 1 kg of the supplement. In vivo digestibilities of dry matter, neutral and acid detergent fibres, and dietary long-chain fatty acids were unaffected by supplement.

Sign in / Sign up

Export Citation Format

Share Document