Production of lactating dairy cows fed diets with lucerne or red clover silage with or without supplemental maize silage

2001 ◽  
Vol 2001 ◽  
pp. 186-187
Author(s):  
G. A. Broderick ◽  
R. P. Walgenbach
Keyword(s):  
Dairy Cows ◽  
Feed Efficiency ◽  
Trifolium Pratense ◽  
Enzyme System ◽  
Red Clover ◽  
Northern Europe ◽  
Maize Silage ◽  
Plant Phenols ◽  
Lactating Dairy Cows ◽  
Supplemental Protein

Lucerne (Medicago sativa) is a major, high protein forage fed to dairy cattle. However, during ensiling, much of the CP in lucerne silage (LS) is broken down to nonprotein N (NPN); high levels of NPN in LS depress protein utilisation in lactating dairy cows. Red clover (Trifolium pratense) is a high quality legume forage that can be grown in Britain and Northern Europe. Polyphenol oxidase, an enzyme system in red clover, converts plant phenols into quinones that react rapidly with forage proteins in the silo and result in red clover silage (RCS) having less NPN than LS. Earlier (Broderick et al., 2000), we reported that replacing LS with RCS lowered milk yield but improved feed efficiency and apparent digestibility. Our objective was to compare the production of dairy cows fed equal amounts DM as LS or RCS, with or without maize silage (MS) and supplemental protein added to the diet.

scholarly journals Replacing maize silage plus soybean meal with red clover silage plus wheat in diets for lactating dairy cows

2018 ◽  
Vol 101 (2) ◽  
pp. 1216-1226 ◽  
Author(s):  
Franziska Schulz ◽  
Edwin Westreicher-Kristen ◽  
Karin Knappstein ◽  
Joachim Molkentin ◽  
Andreas Susenbeth
Keyword(s):  
Dairy Cows ◽  
Soybean Meal ◽  
Red Clover ◽  
Maize Silage ◽  
Lactating Dairy Cows

scholarly journals Genetics of alternative definitions of feed efficiency in grazing lactating dairy cows

2017 ◽  
Vol 100 (7) ◽  
pp. 5501-5514 ◽  
Author(s):  
A.M. Hurley ◽  
N. López-Villalobos ◽  
S. McParland ◽  
E. Lewis ◽  
E. Kennedy ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Feed Efficiency ◽  
Lactating Dairy Cows

Persian clover and maize silage. III. Rumen fermentation and balance of nutrients when clover and silage are fed to lactating dairy cows

1994 ◽  
Vol 45 (8) ◽  
pp. 1783 ◽  
Author(s):  
CR Stockdale
Keyword(s):  
Zea Mays ◽  
Dairy Cows ◽  
Milk Fat ◽  
Maize Silage ◽  
Lactating Dairy Cows ◽  
Degradation Rates ◽  
Persian Clover ◽  
Yield Responses ◽  
Trifolium Resupinatum

Six rumen fistulated dairy cows, at various stages of lactation, were housed in metabolism stalls on a total of nine occasions in three experiments in which various combinations of Persian clover (Trifolium resupinatum) and maize (Zea mays) silage were offered. These experiments considered some aspects of digestion of Persian clover and Persian clover/maize silage diets in order to understand the good milk yield responses attributed to maize silage measured in previous research. Rumen ammonia concentrations and nylon bag degradation rates suggested that the cows made better use of one or both feeds when Persian clover and maize silage were offered together than they did when Persian clover was offered alone. While Persian clover and maize silage appeared to be a substantially inferior diet in terms of apparent in vivo digestibility coefficients and availability of nutrients when compared with Persian clover offered alone, milk yields were unaffected. In addition, no matter how much maize silage was offered, milk fat content remained constant. These results were attributed to an improved balance of absorbed nutrients.

Influence of dietary copper sulphate supplementation on the milk fatty acid composition of dairy cows

2000 ◽  
Vol 25 ◽  
pp. 149-154
Author(s):  
B.F. McNamee ◽  
A.M. Fearon ◽  
J. Pearce
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Acid Composition ◽  
Milk Fat ◽  
Lipid Analysis ◽  
Enzyme System ◽  
Plasma Lipid ◽  
Normal Concentration ◽  
Lactating Dairy Cows

AbstractThe experiment was designed to investigate the effect of increasing the concentration of Cu2+ in the diet of the lactating dairy cow with a view to stimulating the activity of the mammary gland △9–desaturase enzyme system to increase the C18:1/18:0 ratio in the milk fat.In a preliminary study, two lactating dairy cows were provided with ground rapeseed/maizebased concentrates containing either a normal or a high concentration of supplementary Cu2+, the animal offered the normal concentration supplement was also provided with an oral CuSO4 solution drench so that both animals received an equal daily supply of Cu2+. Daily blood samples were collected from the cows and total plasma Cu2+ concentration was determined. A blood plasma lipid analysis was also carried out. In a second study, eight lactating dairy cows were provided with a silage and concentrate diet. The lipid portion of the concentrates was provided by either ground or unground rapeseed while the Cu2+ in the mineral supplement of the unground rapeseed-based concentrate was manipulated to provide one of the following three concentrations of Cu2+ in the concentrate (mg/kg DM); <10, 50 or 100. The subsequent milk fat was analysed for fatty acid composition.Presentation of an increased concentration of Cu2+ to the cow was more efficiently absorbed when provided in the concentrate mix than when provided as a CuSO4 solution in an oral drench. Increased dietary Cu2+ in the concentrates was successful at increasing the concentration of plasma Cu2+ from a normal concentration of 80–100 mg/cm3 to over 200 mg/cm3. An increased concentration of Cu2+ in the blood of the cows in the first experiment resulted in a significant increase (P<0·05) in the C18:1 content of the plasma lipid, possibly through the increased activity of the intestinal △9–desaturase enzyme system.The composition of the milk, including the fatty acid composition of the milk fat, from the second experiment was unaffected by the concentration of Cu2+ in the diet of the dairy cows within the concentration range of <10 to 35 mg/kg DM per day.

Replacing grazing with a maize silage-based indoor diet for lactating dairy cows in autumn

2001 ◽  
Vol 2001 ◽  
pp. 195-195
Author(s):  
O. Hernandez-Mendo ◽  
J. D. Leaver
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Maize Silage ◽  
Behavioural Responses ◽  
Lactating Dairy Cows ◽  
Soyabean Meal ◽  
Grazing Dairy Cows

Reducing the time available for grazing from 20h to 5h daily, and replacing this with access to a maize silage/soyabean meal diet indoors had no significant effect on milk yield in spring (Hernandez-Mendo and Leaver, 1999). Grazing conditions in autumn present additional problems of shorter daylength and accumulated herbage contamination. The objectives were to examine the production and behavioural responses of grazing dairy cows to reducing access to grazing and increasing access to a maize silage/soyabean meal diet offered indoors.

scholarly journals Predicting feed intake and feed efficiency in lactating dairy cows using digesta marker techniques

animal ◽  
2019 ◽  
Vol 13 (10) ◽  
pp. 2277-2288 ◽  
Author(s):  
A. Guinguina ◽  
S. Ahvenjärvi ◽  
E. Prestløkken ◽  
P. Lund ◽  
P. Huhtanen
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Lactating Dairy Cows

Incremental effects of ground rapeseed on digestion in lactating dairy cows

2002 ◽  
Vol 2002 ◽  
pp. 107-107
Author(s):  
C.K. Reynolds ◽  
D. J. Humphries ◽  
J. D. Sutton ◽  
B. Lupoli ◽  
D.E. Beever
Keyword(s):  
Dairy Cows ◽  
Unsaturated Fatty Acids ◽  
Metabolic Effects ◽  
Inhibitory Effects ◽  
Maize Silage ◽  
Negative Effects ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Production Study ◽  
Fatty Acid Absorption

Crushed rapeseed and other oil seeds offer an economical source of fat and protein in diets for lactating dairy cows, but the potential inhibitory effects of their unsaturated fatty acids on fibre digestion in the rumen are a concern. Feeding crushed rapeseed in a grass silage-based ration increased milk yield without affecting intake (Reynoldset al., 1998), and had no measurable effects on rumen or total tract digestion (Reynoldset al., 2000). In a companion study, feeding increasing amounts of ground rapeseed in a maize silage-based ration decreased DM intake at higher levels of inclusion (Reynoldset al., 2002). This effect may reflect metabolic effects of rapeseed fatty acid absorption, or negative effects of rapeseed oil on rumen fermentation and fibre digestion. The present study was conducted simultaneously to the production study to determine the incremental effects of ground rapeseed on rumen, post-rumen and total tract digestion in lactating dairy cows fed maize silage-based rations.

scholarly journals Performance of Lactating Dairy Cows Fed Alfalfa or Red Clover Silage as the Sole Forage

2000 ◽  
Vol 83 (7) ◽  
pp. 1543-1551 ◽  
Author(s):  
G.A. Broderick ◽  
R.P. Walgenbach ◽  
E. Sterrenburg
Keyword(s):  
Dairy Cows ◽  
Red Clover ◽  
Lactating Dairy Cows
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