Biostatistics did not spring fully formed from the brow of R. A. Fisher, but evolved over many years. This process is continuing, although it may not be obvious from the outside. It has been ten years since the first edition of this book appeared (and rather longer since it was begun). Over this time, new areas of biostatistics have been developed and emphases and interpretations have changed
Please bookmarks your favourate biostatistics books in commend sectons ...
Lectire notes on biostats http://www.dcscience.net/Lectures_on_biostatistics-ocr4.pdf
Here is a nice book "Biostatistics for Animal Science" http://www.lce.esalq.usp.br/arquivos/aulas/2011/LCE5801/Biostatistics%20for%20Animal%20Science.pdf fop animal biologist.