2021
DOI: 10.1071/an20127
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The value of stubbles and chaff from grain crops as a source of summer feed for sheep

Abstract: Context. Modern crop stubbles provide an important source of feed for sheep during summer but can vary widely in their feeding value due to Genetics • Environment • Management interactions during crop growth, and how chaff is managed at harvest. Stubbles are difficult to assess for grazing value, due to the heterogeneity of forage components (e.g. stem, leaf, grains), which means that livestock producers rely on their observations and experience to manage sheep grazing stubbles. Aims. To provide current inform… Show more

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Cited by 6 publications
(4 citation statements)
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“…Harvest weed seed control was first adopted in Australia in the 1980s with the importation of chaff carts from Canada, which were originally used to collect the nutritious chaff (comprising partially filled grain, rachis and glume) fraction during harvest for use as stockfeed. 21 However, with the increase of multiple herbicide resistance in annual weed species in Australia, 2 growers quickly identified the potential of using chaff carts to intercept and manage weed seeds before they enter the soil weed seed bank, 22,23 thereby driving weed soil seed banks into decline. 7 However, as previously demonstrated with the use of herbicides, 11 the long-term use of effective weed control techniques such as HWSC, can inadvertently select for mechanisms that enable weeds to evade control measures.…”
Section: Discussionmentioning
confidence: 99%
“…Harvest weed seed control was first adopted in Australia in the 1980s with the importation of chaff carts from Canada, which were originally used to collect the nutritious chaff (comprising partially filled grain, rachis and glume) fraction during harvest for use as stockfeed. 21 However, with the increase of multiple herbicide resistance in annual weed species in Australia, 2 growers quickly identified the potential of using chaff carts to intercept and manage weed seeds before they enter the soil weed seed bank, 22,23 thereby driving weed soil seed banks into decline. 7 However, as previously demonstrated with the use of herbicides, 11 the long-term use of effective weed control techniques such as HWSC, can inadvertently select for mechanisms that enable weeds to evade control measures.…”
Section: Discussionmentioning
confidence: 99%
“…Grazing young crops without loss in grain yield facilitates animal production, with no trade off in the production of food from plants. At the other end of the crop-growth cycle, a single hectare of post-harvest wheat residue provides sufficient metabolisable energy to support one dry sheep equivalent for 50-100 days (Thomas et al 2021b). If retained, this stubble may decrease subsequent crop yield (Kirkegaard 1995); conversely, loss of stubble through burning and conventional tillage may increase susceptibility to erosion and soil carbon depletion (Chan et al 2003;Chan and Heenan 2005).…”
Section: Sheep and Cattle In The Mixed Farming Zonementioning
confidence: 99%
“…These residues are important sources of fiber, proteins and minerals [3]. The amounts and percentages of nutrients depend on the crop in question and the parts used as stubble, whether stems, leaves and roots, as well as genetic interactions of livestock with the environment and stubble management [13].…”
Section: Animal Productionmentioning
confidence: 99%
“…), canola (Brassica napus L.) and wheat stubble on sheep nutrition were evaluated. It was quantified that sheep obtained a weight gain of 89 g day 1 , taking as reference the metabolizing energy of wheat (5.9 MJ metabolizable energy kg 1 dry matter); barley residues were higher by 5%; 19% higher in lupine and 5% lower compared to canola [13].…”
Section: Animal Productionmentioning
confidence: 99%