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| Hatcher, Sue; Johnson, P.R.. |
| This paper reviews the development of the wool follicle population with a view to the management of breeding ewes so as to optimise the genetic potential of the progeny for wool production and quality throughout their lifetime. It highlights the importance of the pre-weaning environment (i.e. maternal nutrition through pregnancy and lactation) on the initiation and maturation of the secondary follicle population and identifies the last third of pregnancy as the most critical period. The implications of this for the commercial wool producer are discussed in terms of matching the breeding cycle of the ewes to available pasture and provision of supplementary feed. Finally, it introduces a national project 'Lifetime Wool' funded by Australian Wool Innovation... |
| Tipo: Article |
Palavras-chave: Genetic potential; Follicle development; Breeding ewe; Nutrition; Lifetime wool; Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/123141 |
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| Graham, Phillip; Hatcher, Sue. |
| The national Lifetime Wool project has quantified the production benefits that accrue to a breeding flock of Merino ewes from actively managing their fat score at critical stages of the reproductive cycle. The GrassGro™ model was used to simulate the profitability of achieving three fat score targets (i.e. FS2.5, FS3-4% lambing and FS3-10% lambing) for a predominately grazing region (Yass) of NSW and a sheep/cereal region (Parkes). In both regions the FS3-10% flock had the highest gross margin but was also the riskiest option in terms of the variation in gross margin during the simulation period. In all cases the key driver of gross margin was the amount (and therefore cost) of supplement required to meet the fat score targets which highlights the... |
| Tipo: Presentation |
Palavras-chave: Merino ewes; Fat score targets; Gross margin; Farm Management. |
| Ano: 2006 |
URL: http://purl.umn.edu/122520 |
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