Spirulina: Dual-purpose lamb supplement - Breed and sex effects on productivity and product quality

TL;DRAbstract

This thesis tested the effect of Spirulina supplementation and its interactions with sire breed, sex and nutritional plane on Australian dual-purpose lamb productivity and product quality. It was hypothesised that Spirulina supplementation would interact with sex, sire breed and plane of nutrition to affect wool and meat quality traits, haematological metabolites, body conformation, liveweight and feed intake indices of lamb productivity. Secondary objectives of assessing the independent effects of sire breed, sex and plane of nutrition on the fatty acid composition of lamb were also investigated. A total of 48 lambs randomly allocated to treatment groups balanced by sire breed (Black Suffolk, Dorset, Merino, and White Suffolk), sex (ewes and wethers) and Spirulina supplementation levels (CONTROL ‚Äö- 0mL, LOW ‚Äö- 50mL, MEDIUM ‚Äö- 100mL, and HIGH ‚Äö- 200mL) was used. These lambs were allocated into two feeding trials with basal diets of differing planes of nutrition ‚Äö- low and hig

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