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Utilization of high levels of crude glycerin in commercial layer diets
Avellaneda Y., R. Ortiz, G. Afanador and C. Ariza Nieto
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Effect of a reduced crude protein, amino acid-balanced diet on hen performance, production costs, and ammonia emissions in a commercial laying hen flock
Burley, H.K., P.H. Patterson and M.A. Elliot
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A determination of order of limiting amino acids in a low crude protein diet for laying hens
Da Silva, J.H.V. and co-workers