Changes in the protein requirements of pullets during the first laying year

R. C. Jennings Department of Agriculture, The University, Reading, RG6 2AT, England

C. Fisher Department of Agriculture, The University, Reading, RG6 2AT, England

T. R. Morris Department of Agriculture, The University, Reading, RG6 2AT, England

References

Bray , D. J. 1968 . Photoperiodism and age as factors affecting the protein requirements of laying pullets . Poult. Sci. , 47 : 1005 – 1013 .
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Bray , D. J. , Jennings , R. C. and Morris , T. R. 1965 . The effects of early and late maturity on the protein requirements of pullets . Br. Poult. Sci. , 6 : 311 – 319 .
PubMedGoogle Scholar
Coligado , E. C. and Quisenberry , J. H. 1960 . Effects of protein level, source and change of level during the laying period on performance of incross egg production stock . Poult. Sci. , 40 : 1388
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