C. L. Goulter

AgResearch

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Robyn Dynes

AgResearch

T.L. Knight

AgResearch

D.R. Stevens

AgResearch

D. J. Saville

Statistics New Zealand

B.R. Thompson

AgResearch

Todd White

AgResearch

RA Moss

AgResearch

W. Clarke-Hill

AgResearch

R. A. Moss

AgResearch

Andrew J. Wall

University of British Columbia

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Lincoln University

Biocon (Switzerland)

Biocontrol (Brazil)

Christ University

North Carolina State University

University of British Columbia

Environment Canterbury

Commonwealth Scientific and Industrial Research Organisation

University of Western Australia

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Winter management practices to optimise early spring pasture production: a review

Proceedings of the New Zealand Grassland Association (2012)

Andrew J. Wall D.R. Stevens B.R. Thompson C. L. Goulter

The performance of the national ewe flock has increased significantly in the past 20 years. Pasture management in winter and early spring has a large impact on the success of the subsequent seasons. Overgrazing in winter can reduce spring pasture production by up to 80%. Treading and pugging damage can also decrease spring pasture production by 10% for every 10% of bare area created. Maintaining pasture cover at over 2000 kg DM/ha can improve pasture growth, and leaving a residual pasture mass of more than 1200 kg DM/ha also aids in pasture production in late winter. Techniques such as feed budgeting, longer winter feeding periods (4 day cf. 1 day shifting) and increasing the control of feed intake during late pregnancy can be used to help achieve the goals of higher pasture residuals and increased pasture growth and availability. More tools for managing the transition from winter rotational grazing to spring continuous grazing would help farmers. Keywords: early spring production, grazing management, pasture cover, residual cover, treading.

Overgrazing

Flock

10.33584/jnzg.2012.74.2888

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Citations (5)

The Impact of Different Grassland Land‐Uses on Earthworm Populations in a New Zealand Fragi‐Pallic Soil

Todd White T.L. Knight C. L. Goulter W. Clarke-Hill

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Effect of herbage species and renewal technique on the free living stages of gastro-intestinal roundworms

New Zealand Journal of Agricultural Research (2011)

RA Moss Robyn Dynes C. L. Goulter

Abstract This experiment assessed the effect of commonly used pasture species and their establishment technique on endoparasites on herbage in Canterbury, New Zealand. Pasture plots were artificially contaminated with lamb faeces with a known endoparasite egg count. Subsequent treatments included retaining the original pasture, replacing the pasture immediately with new pasture via cultivation or direct-drilling, replacing the pasture immediately with a brassica via cultivation or direct drilling, or replacing the pasture immediately with a barley grain crop via cultivation. Brassica and grain crops were later replaced with new pasture. Herbages were harvested and dry matter (DM) yield and numbers and species of endoparasites (L3) were determined. Pasture and brassica establishment technique had no effect on herbage production. The old pasture initially contained more L3 than all other treatments, but subsequently had a similar number to pasture renewed by direct drilling, both of which had considerably more than all other treatments. Establishing new pasture by direct drilling resulted in 12 760 L3/kg DM over 56 weeks, nearly three times more than occurred following cultivation. Brassica swards had fewer L3 than did new grass. Nematodirus L3 were disproportional to the number of eggs deposited; they represented 2% of the eggs deposited but 67% of the L3, and they were more persistent, representing 30% of the L3 present during March but 87% during October.

Brassica rapa

10.1080/00288233.2010.535488

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Forward creep grazing of lambs to increase liveweight gain and post‐weaning resistance to endoparasites

New Zealand Journal of Agricultural Research (2009)

R. A. Moss Robyn Dynes C. L. Goulter D. J. Saville

Abstract An experiment was conducted in New Zealand to assess the effect of creep grazing of lambs on their liveweight and resistance to endoparasites. Comparisons included creep versus non‐creep grazing at two herbage allowances and regular an‐thelmintic drenching. Treatments commenced with 6‐week‐old twin reared lambs, and ceased when they were weaned at 13 weeks, with the exception of the drench treatment which continued post‐weaning. Pastures used contained sheep endoparasites. At 8 weeks post‐weaning one lamb from each twin set was slaughtered, remaining lambs were then drenched, and 8 and 9 days later were orally dosed with 180 Trichostrongylus colubriformis L3/kg liveweight each day (averaging 12 650/lamb). Three weeks later these lambs were also slaughtered. Measurements included liveweight, faecal worm egg count (FEC) and adult endoparasite numbers. Neither herbage allowance nor creep grazing affected FEC or adult endoparasite numbers. Fortnightly drenching of creep grazed lambs on the high allowance had no effect on weaning liveweight, but it improved live‐weights post‐weaning. Neither creep grazing, pre‐weaning herbage allowance, nor drenching, affected lamb resistance to endoparasites. Creep grazing and the higher allowance both increased weaning liveweights. The response to creep grazing was highest at the lower allowance, increasing weaning liveweights by 4 kg. Pre‐weaning treatment had no effect on post‐weaning growth rate. Keywords: creep grazingendoparasitesfeed allowancenematodessheep resilience Trichostrongylus colubriformis

Creep feeding

Allowance (engineering)

10.1080/00288230909510522

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Citations (11)