Mid-infrared spectrometry of milk as a predictor of energy intake and efficiency in lactating dairy cows

SUMMARYTwelve Ayrshire cows which had reached or just passed peak lactation were selected and divided into two balanced groups. One group was fed strictly according to yield. The other was fed overall according to yield, but was subjected to a 4-day cycle of energy intake. For 2 days energy intake was 12·2% above calculated requirements and for the next 2 days intake was 12·2% below calculated requirements. The treatment was imposed for 10 weeks and milk yield and composition, body weight and blood composition were measured in both groups of cows. A significant variation in daily milk yield and daily solids-not-fat yield was found to follow the feed cycle. Blood composition showed no significant variation.

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Meta-analysis on the effects of lipid supplementation on methane production in lactating dairy cows

Canadian Journal of Animal Science ◽

10.4141/cjas07112 ◽

2008 ◽

Vol 88 (2) ◽

pp. 331-337 ◽

Cited By ~ 52

Author(s):

M. Eugène ◽

D. Massé ◽

J. Chiquette ◽

C. Benchaar

Keyword(s):

Dairy Cows ◽

Energy Intake ◽

Milk Production ◽

Meta Analysis ◽

Milk Composition ◽

Metabolizable Energy ◽

Scientific Publications ◽

Lactating Dairy Cows ◽

Gross Energy ◽

Lipid Supplementation

A meta-analysis was conducted to statistically determine the effects of lipid supplementation on methane (CH4) production, milk production, and milk composition of lactating dairy cows. For this purpose, a data base was built using seven scientific publications (25 diets) available in the literature and reporting the effects of lipid supplementation on CH4 production, milk production, and milk composition. Lipid supplementation decreased (P < 0.05) dry matter intake (DMI) by 6.4% compared with control diets, whereas production of milk and 4% FCM and milk composition were not changed (P > 0.05). Lipid supplementation decreased (P < 0.05) CH4 production by 9%, either expressed as MJ d-1 or as a percentage of gross energy intake (GEI), digestible energy intake (DEI), or metabolizable energy intake (MEI). This reduction was mainly a consequence of a decreased DMI. Key words: Meta-analysis, lipid supplementation, methane, dairy cows, lactating

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Validation of milk mid-infrared spectroscopy for predicting the metabolic status of lactating dairy cows in Australia

Journal of Dairy Science ◽

10.3168/jds.2020-19603 ◽

2021 ◽

Author(s):

P.N. Ho ◽

T.D.W. Luke ◽

J.E. Pryce

Keyword(s):

Infrared Spectroscopy ◽

Dairy Cows ◽

Metabolic Status ◽

Mid Infrared ◽

Mid Infrared Spectroscopy ◽

Lactating Dairy Cows

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Prediction and validation of residual feed intake and dry matter intake in Danish lactating dairy cows using mid-infrared spectroscopy of milk

Journal of Dairy Science ◽

10.3168/jds.2016-11609 ◽

2017 ◽

Vol 100 (1) ◽

pp. 253-264 ◽

Cited By ~ 21

Author(s):

N. Shetty ◽

P. Løvendahl ◽

M.S. Lund ◽

A.J. Buitenhuis

Keyword(s):

Infrared Spectroscopy ◽

Dairy Cows ◽

Feed Intake ◽

Dry Matter ◽

Residual Feed Intake ◽

Dry Matter Intake ◽

Mid Infrared ◽

Mid Infrared Spectroscopy ◽

Lactating Dairy Cows

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The effect of level of concentrate feeding on the response of lactating dairy cows to dietary inclusion of fodder beet

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200005640 ◽

2001 ◽

Vol 2001 ◽

pp. 182-182

Author(s):

D.C. Patterson ◽

C.P. Ferris ◽

F.J. Gordon

Keyword(s):

Dairy Cows ◽

Energy Intake ◽

Fodder Beet ◽

Grass Silage ◽

Lactating Dairy Cows ◽

Alternative Approach ◽

Increase Energy Intake ◽

Dietary Component ◽

And Performance

Traditional options to increase the energy intakes of lactating dairy cows include raising the level of concentrate feeding and/or improving the quality of grass silage. However, each of these options have limited potential to increase total ME intake (Ferris et al., 2000). The inclusion of an additional dietary component, such as whole crop cereal silage or fodder beet constitutes an alternative approach to increase energy intake (Phipps et al., 1995). An experiment was designed to examine the potential of fodder beet to increase the energy intake and performance of lactating dairy cows across a range of levels of concentrate feeding.

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