Supplementing barley or rapeseed meal to dairy cows fed grass-red clover silage: I. Rumen degradability and microbial flow

Grass-red clover silage was fed ad libitum. In experiment 1 a duplicated 4 x 4 Latin square design was used. A mixture of oats and barley was given at 8 kg (C). Three isonitrogenous protein supplements were a commercial rapeseed meal (218 g kg-1 dry matter (DM); RSM), crushed organic field pea (Pisum sativum L.) (452 g kg-1 DM; P) and a mixture of pea (321 g kg-1 DM) and organic rapeseed (Spring turnip rape, Brassica rapa L. oleifera subv. annua) (155 g kg-1 DM; PRS). Cows on P and PRS diets produced as much milk as cows on the RSM diet. Milk yield was higher but protein content lower with PRS diet than with diet P. In experiment 2 a triplicated 3 x 3 Latin square design was used. A mixture of oats (395 g kg-1 ), barley (395 g kg-1 ) and a commercial heat-moisture treated rapeseed cake (210 g kg-1 ) was given at 8 kg (RSC). The second diet (ORSC) consisted (g kg-1) of oats (375), barley (375) and cold-pressed organic rapeseed cake (250). The third diet (RSCO) consisted (g kg-1) of oat (395), barley (395) and commercial heat-moisture treated rapeseed cake (250) and additional rapeseed oil (0.38 kg) to balance fat content between ORSC and RSCO diets. There was no dietary effect on the yield of energy corrected milk. Milk yield was higher with RSCO diet compared with other diets.;

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Equol in milk of dairy cows is derived from forage legumes such as red clover

British Journal Of Nutrition ◽

10.1017/s0007114509990857 ◽

2009 ◽

Vol 102 (11) ◽

pp. 1552 ◽

Cited By ~ 34

Author(s):

Eeva A. Mustonen ◽

Mikko Tuori ◽

Ilkka Saastamoinen ◽

Juhani Taponen ◽

Kristiina Wähälä ◽

...

Keyword(s):

Dairy Cows ◽

Red Clover ◽

Forage Legumes

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Eating behaviour of dairy cows offered fresh or ensiled white clover, red clover and ryegrass to choose from or in a mixture

Applied Animal Behaviour Science ◽

10.1016/j.applanim.2007.06.018 ◽

2008 ◽

Vol 111 (3-4) ◽

pp. 205-221 ◽

Cited By ~ 6

Author(s):

Hendrika Anette van Dorland ◽

Michael Kreuzer ◽

Hans Leuenberger ◽

Hans-Rudolf Wettstein

Keyword(s):

Dairy Cows ◽

White Clover ◽

Eating Behaviour ◽

Red Clover

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

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200005688 ◽

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.

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