Dave Roberts

Prof

  • Crichton Estate, SAC Consulting, Heston House

    DG1 4TA Dumfries

    United Kingdom

19942019

Research output per year

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Research Output

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Article
2019
Open Access
File
1 Citation (Scopus)
5 Downloads (Pure)

What agricultural practices are most likely to deliver "sustainable intensification" in the UK?

Dicks, LV., Rose, DC., Ang, F., Aston, S., Birch, ANE., Boatman, N., Bowles, EL., Chadwick, D., Dinsdale, A., Durham, S., Elliott, J., Firbank, L., Humphreys, S., Jarvis, P., Jones, D., Kindred, D., Knight, SM., Lee, MRF., Leifert, C., Lobley, M. & 20 others, Matthews, K., Midmer, A., Moore, M., Morris, C., Mortimer, S., Murray, TC., Norman, K., Ramsden, S., Roberts, DJ., Smith, LG., Soffe, R., Stoate, C., Taylor, B., Tinker, D., Topliff, M., Wallace, J., Williams, P., Wilson, P., Winter, M. & Sutherland, WJ., Feb 2019, In : Food and Energy Security. 8, 1, e00148.

Research output: Contribution to journalArticle

Open Access
File
7 Citations (Scopus)
5 Downloads (Pure)
2018
Open Access
File
3 Citations (Scopus)
8 Downloads (Pure)
Open Access
File
8 Downloads (Pure)
2017

A time-series of methane and carbon dioxide production from dairy cows during a period of dietary transition

Lee, MA., Todd, A., Sutton, MA., Chagunda, MGG., Roberts, DJ. & Rees, RM., 30 Sep 2017, In : Cogent Environmental Science. 3, 1385693.

Research output: Contribution to journalArticle

Open Access
File
8 Downloads (Pure)

Financial evaluation of Holstein Friesian strains within composite and housed UK dairy systems

March, MD., Shalloo, L., Roberts, DJ. & Ryan, W., 28 Mar 2017, In : Livestock Science. 200, p. 14 - 22 9 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
3 Downloads (Pure)
2016

Modelling phosphorus efficiency within diverse dairy farming systems - pollutant and non-renewable resource?

March, MD., Toma, L., Stott, AW. & Roberts, DJ., 1 Jun 2016, In : Ecological Indicators. 69, p. 667 - 676 10 p.

Research output: Contribution to journalArticle

Open Access
File
10 Citations (Scopus)
2 Downloads (Pure)
2014

An innovative approach to integrated training for smallholder dairying

Chagunda, MGG., Munthali, DP., Gondwe, TN., Wood, B. & Roberts, DJ., 2014, In : Journal of Agricultural Education and Extension. 20, 4, p. 413 - 428 16 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Current trends in British dairy management regimens

March, MD., Haskell, MJ., Chagunda, MGG., Langford, FM. & Roberts, DJ., 2014, In : Journal of Dairy Science. 97, 12, p. 7985 - 7994 10 p.

Research output: Contribution to journalArticle

Open Access
File
26 Citations (Scopus)
1 Downloads (Pure)
Open Access
File
5 Citations (Scopus)
7 Downloads (Pure)
2013

Environmental efficiency of alternative dairy systems: a productive efficiency approach

Toma, L., March, MD., Stott, AW. & Roberts, DJ., Nov 2013, In : Journal of Dairy Science. 96, 11, p. 7014 - 7031 18 p.

Research output: Contribution to journalArticle

17 Citations (Scopus)

Measurement of enteric methane from ruminants using a hand-held laser methane detector

Chagunda, MGG., Ross, DW., Rooke, JA., Yan, T., Douglas, J., Poret, L., McEwen, NR., Teeranavattanakul, P. & Roberts, DJ., 2013, In : Acta Agriculturae Scandinavica, Section A - Animal Science. 63, 2, p. 68 - 75 8 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
11 Citations (Scopus)
2012

Dairy cow feeding space requirements assessed in a Y-maze choice test

Rioja-Lang, FC., Roberts, DJ., Healy, SD., Lawrence, AB. & Haskell, MJ., 2012, In : Journal of Dairy Science. 95, 7, p. 3954 - 3960 7 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Predisposing factors for involuntary culling in Holstein-Friesian dairy cows

Chiumia, D., Chagunda, MGG., MacRae, AI. & Roberts, DJ., 2012, In : Journal of Dairy Research. 80, 1, p. 45 - 50 6 p.

Research output: Contribution to journalArticle

The perceived impact of climate change and variability on smallholder dairy production in northern Malawi

Kasulo, V., Chikagwa-Malunga, S., Chagunda, MGG. & Roberts, DJ., 2012, In : African Journal of Agriculture Research. 7(34), p. 4830 - 4837 8 p.

Research output: Contribution to journalArticle

2011

Smallholder dairy production in Northern Malawi: production practices and constraints

Tebug, SF., Kasulo, V., Chikagwa-Malunga, S., Wiedemann, S., Roberts, DJ. & Chagunda, MGG., 2011, In : Tropical Animal Health and Production. 44, 1, p. 55 - 62 8 p.

Research output: Contribution to journalArticle

Open Access
21 Citations (Scopus)
2010

Are cows more likely to lie down the longer they stand?

Tolkamp, BJ., Haskell, MJ., Langford, FM., Roberts, DJ. & Morgan, CA., 2010, In : Applied Animal Behaviour Science. 124, p. 1 - 10 10 p.

Research output: Contribution to journalArticle

41 Citations (Scopus)

Risk factors for culling Holstein-Friesian dairy cows

Bell, M., Wall, E., Russell, G., Roberts, DJ. & Simm, G., 2010, In : Veterinary Record. 167, p. 238 - 240 3 p.

Research output: Contribution to journalArticle

Risk factors for culling in Holstein-Friesian dairy cows (Veterinary Record

Bell, M. J., Wall, E., Russell, G., Roberts, D. J. & Simm, G., 25 Sep 2010, In : Veterinary Record. 167, 13, p. 238-240

Research output: Contribution to journalArticle

The effect of forage quality on predicted enteric methane production from dairy cows

Chagunda, MGG., Flockhart, JF. & Roberts, DJ., 2010, In : International Journal of Agricultural Sustainability. p. 250 - 256 7 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2009

Comparison of two methods of assessing dairy cow body condition score

Bewley, JM., Boyce, RE., Roberts, DJ., Coffey, MP. & Schutz, MM., 2009, In : Journal of Dairy Research. 77, p. 95 - 98 4 p.

Research output: Contribution to journalArticle

Dairy cows trade-off feed quality with proximity to a dominant individual in Y-maze choice tests

Rioja-Lang, FC., Roberts, DJ., Healy, SD., Lawrence, AB. & Haskell, MJ., 2009, In : Applied Animal Behaviour Science. 117, p. 159 - 164 6 p.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Effect of genotype and feeding regime on enteric methane, non-milk nitrogen and performance of dairy cows during the winter feeding period

Chagunda, MGG., Romer, DAM. & Roberts, DJ., 2009, In : Livestock Science. 122, 2-3, p. 323 - 332 10 p.

Research output: Contribution to journalArticle

44 Citations (Scopus)

On the use of a laser methane detector in dairy cows

Chagunda, MGG., Ross, DW. & Roberts, DJ., 2009, In : Computers and Electronics in Agriculture. 68, p. 157 - 160 4 p.

Research output: Contribution to journalArticle

47 Citations (Scopus)
2008

Cow body shape and automation of condition scoring

Halachmi, I., Polak, P., Roberts, DJ. & Klopcic, M., 2008, In : Journal of Dairy Science. 91, p. 4444 - 4451 8 p.

Research output: Contribution to journalArticle

44 Citations (Scopus)

Potential for estimation of body condition scores in dairy cattle from digital images

Bewley, JM., Peacock, AM., Lewis, O., Boyce, RE., Roberts, DJ., Coffey, MP., Kenyon, SJ. & Schutz, MM., 2008, In : Journal of Dairy Science. 91, p. 3439 - 3453 15 p.

Research output: Contribution to journalArticle

68 Citations (Scopus)
2007

Asssessment and improvement of the efficiency of nitrogen use on commercial dairy farms

Roberts, DJ., Leach, KA. & Goldie, J., 2007, In : International Journal of Agricultural Sustainability. 5, p. 295 - 304 10 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Effect of twinning on the feed intake, performance and health of dairy cows

Bell, MJ. & Roberts, DJ., 2007, In : Livestock Science. 107, p. 274 - 281 8 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)

The impact of uterine infection on a dairy cow's performance

Bell, M. & Roberts, DJ., 2007, In : Theriogenology. 68, p. 1074 - 1079 6 p.

Research output: Contribution to journalArticle

The value of malt distillers' grains ensiled with molassed sugar beet pellets as a feed for dairy cows

McKendrick, EJ., Roberts, DJ. & Offer, NW., 2002, In : Grass and Forage Science.

Research output: Contribution to journalArticle

1999

The effects of incorporating sugar beet pulp with forage maize at ensiling on silage fermentation and effluent output using drum silos

Hameleers, A., Leach, KA., Offer, NW. & Roberts, DJ., 1999, In : Grass and Forage Science. 54, p. 322 - 335 14 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)
1997

The effect of protein source on lameness and solear lesion formation in dairy cattle

Offer, JE., Logue, DN. & Roberts, DJ., 1997, In : Animal Science. 65, p. 143 - 149 7 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
10 Citations (Scopus)
1995
5 Citations (Scopus)

The manipulation of grass swards for summer calving cows

Fisher, GEJ., Roberts, DJ. & Dowdeswell, AM., 1995, In : Grass and Forage Science. 50, p. 424 - 438 15 p.

Research output: Contribution to journalArticle

1994

Effects of feeding fodder beet and concentrates with different protein contents on dairy cows offered grass silage ad libitum

Fisher, GEJ., Sabri, MS. & Roberts, DJ., 1994, In : Grass and Forage Science. 49, p. 34 - 41 8 p.

Research output: Contribution to journalArticle