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This study indicated that weight loss of 1% outset BM per week can be achieved by limiting forage intake to 1% BM as DMI daily. This level of intake can only be ensured when animals are denied access to alternative forages such as straw bedding. Whereas BCS was not useful as an indicator of early weight loss, belly girth and rump width may provide proxy measures where weigh-scales are unavailable. Data suggested that this rate of weight loss might rapidly decrease hyperinsulinaemia

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without compromise to health or the development of permanent undesirable behaviours. Further work is required to develop a practical nutritional protocol that could be used under field conditions. Food fibre lengths and meal frequencies could potentially be increased to prolong prehension and mastication times and reduce inter- meal intervals to limit the behavioural changes associated with periods of food deprivation (NRC, 2007). The imposition of controlled exercise and increased dietary protein provision also warrant further study to respectively promote fat mobilisation and spare lean tissue degradation.

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3.7 References

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Chapter 4

Assessment of body fat