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- W4386988892 abstract "Access to simple, accurate feed intake models would facilitate decision-making in feedlots as feed costs are a major part of operational expenditure. This study aimed to develop genotype-specific feed intake models for South African feedlot lambs. Four ram and four ewe lambs each of eight genotypes were raised under ideal growth conditions from weaning until 1 year of age. Feed intake and growth were monitored throughout this period. The intake data were then used to fit various models to predict daily feed intake, intake as percentage of body weight, cumulative intake and feed conversion ratio. No satisfactory univariate models could be found for the prediction of daily or percentage intake, but a good fit was found for cumulative intake data (R2 >0.80, P <0.01). The slope parameters of these linear models show a strong correlation (72%) with feed conversion and can therefore also serve as proxies for feed conversion. A model was also developed that can predict feed conversion ratio with a moderate accuracy (R2 =0.5, P <0.05) at a given body weight. The cumulative intake model was deemed accurate and simple enough for practical use." @default.
- W4386988892 created "2023-09-24" @default.
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- W4386988892 date "2023-09-23" @default.
- W4386988892 modified "2023-10-16" @default.
- W4386988892 title "Determining and predicting feed intake in crossbred sheep from weaning until maturity" @default.
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- W4386988892 doi "https://doi.org/10.1007/s11250-023-03731-z" @default.
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