The Effect of Concentrate Supplementation on Nutrient Flow to the Omasum in Dairy Cows Receiving Freshly Cut Grass

In order to understand the complex changes associated with lactation in the dairy cow it is necessary to assess the contribution of the non-carcass components. It has been shown with sheep (Cowan, Robinson, Greenhalgh and McHattie, 1979) that a number of tissues may be mobilised during lactation with a redistribution of tissues particularly towards the gut and udder, and that diet may have a significant effect. Butler-Hogg, Wood and Bines (1985), using Friesian dairy cows showed changes in the weights of guts, internal fat depots (omental, mesenteric and perinephric) and liver with stage of lactation although the number of stages examined was somewhat limited. The present experiment investigates changes in non-carcass component weights at 9 points over the first 29 weeks of lactation and with 3 levels of concentrate supplementation.

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Response of grazing dairy cows to level of concentrate supplementation and concentrate protein content

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200007687 ◽

2002 ◽

Vol 2002 ◽

pp. 112-112

Author(s):

C.P. Ferris ◽

D.C. Patterson ◽

F.J. Gordon ◽

D.J. Kilpatrick

Keyword(s):

Dairy Cows ◽

Protein Content ◽

Concentrate Supplementation ◽

Grazing Dairy Cows

The response of grazing dairy cows to level of concentrate supplementation and to the concentration of protein in the supplement remains poorly defined. The response is of particular importance in view of the high costs associated with the concentrate feedstuffs, especially protein ingredients. The current study was designed to examine the response of grazing dairy cows to level of concentrate supplementation and to level of protein in the concentrate.

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The response of creole, friesian and friesian cross cows to concentrate supplementation on village smallholdings in mauritius

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600011338 ◽

1989 ◽

Vol 1989 ◽

pp. 143-143

Author(s):

A.A. Boodoo ◽

R. Ramjee ◽

B. Hulman ◽

F. Dolberg ◽

J.B. Rowe

Keyword(s):

Dairy Cows ◽

Milk Production ◽

Concentrate Supplementation ◽

Fresh Milk ◽

The Family ◽

National Production ◽

Cattle Rearing ◽

Common Lands ◽

Calving Intervals ◽

Nations Development

Milk production in the villages of Mauritius can be characterised as follows: about 90% of the ‘dairy’ cows on the island are owned by villagers. Cattle-rearing is a side-line activity of the family. Most villagers own one cow With a calf. No forage is cultivated. Forage sources for the cattle include sugar cane tops from June to December (harvest season) and shrubs and mixed grasses from road sides and common lands all the year round. All forages are available free and are collected by hand. There is very little or no use of concentrate supplements.The cattle are a mixture of the local Creole breed, Friesians and their crosses. Artificial insemination is widely used. Milk production is generally low (1200-1500 litres per lactation) when compared with European dairy cows. Lactations are normally relatively short (225-250 days) and calving intervals long (15-18 months).Since these cattle contribute more than 90% of the national production of fresh milk it Was decided, within the context of a project financed by the United Nations Development Programme, to investigate the extent to Which their productivity could be improved.

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The influence of cow genetic merit for milk production on response to level of concentrate supplementation in a grass based system

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200012163 ◽

2003 ◽

Vol 2003 ◽

pp. 57-57 ◽

Cited By ~ 1

Author(s):

P. Dillon ◽

J. Kennedy ◽

P. Faverdin ◽

L. Delaby ◽

F. Buckley ◽

...

Keyword(s):

Dairy Cows ◽

Milk Production ◽

Milk Yield ◽

Yield Potential ◽

Genetic Merit ◽

Concentrate Supplementation ◽

Holstein Friesian

Pre-1990 published responses to supplementation at pasture ranged from 0.4 to 0.6kg milk/kg concentrate fed. However since 1990 higher responses to concentrate supplementation at pasture have been published (Delaby 2001). The objective of this study was to determine if milk production responses of Holstein-Friesian dairy cows to concentrate supplementation at pasture are influenced by genetic merit (milk yield potential) in a spring calving grass based system of milk production.

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An investigation of the effect of initial milk yield level on the response to sward height and concentrate supplementation in grazing dairy cows

Proceedings of the British Society of Animal Science ◽

10.1017/s0308229600029226 ◽

1995 ◽

Vol 1995 ◽

pp. 156-156

Author(s):

R. Pulido ◽

J.D. Leaver

Keyword(s):

Dairy Cows ◽

Milk Yield ◽

Yield Potential ◽

Concentrate Supplementation ◽

Yield Level ◽

Sward Height ◽

Herbage Intake ◽

Holstein Friesian ◽

Cow Performance ◽

Grazing Dairy Cows

The increase of milk yield potential of dairy cows raises a number of questions relating to their management at pasture where the intake potential might be limiting. The interaction of initial milk yield (IMY), sward availability (SH) and level of concentrate supplementation (CI) is largely unknown.Two experiments of 42 and 24 days in spring and midsummer were carried out with 45 and 27 Holstein Friesian cows respectively. In spring, five IMY groups (range 16.9 to 35.5 kg/day) and in midsummer three IMY groups (range 22.2 to 31.8 kg/day) were used. In both periods, three compressed sward height(3 to 5, 5 to 7 and 7 to 9 cm) and three CI (0, 3 and 6 kg/day, with 160 g CP/kg DM, 12.8 MJ ME/kg DM) were used. The grazing area consisted of 7.9 ha of perennial ryegrass which was set stocked. The herbage intake (HDMI) was estimated indirectly from individual cow performance. Grazing time (GT) was recorded for each cow on 24 hour observations. Multiple regression analyses were carried out relating the dependent variables herbage intake, grazing behaviour and milk production to the independent variables (IMY, SH, CI).

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