Urinary excretion of purine derivatives as influenced by GFR and plasma retention of purines in cattle (&lt;i&gt;Bos indicus&lt;/i&gt; × &lt;i&gt;Bos taurus&lt;/i&gt;) and buffalo (&lt;i&gt;Bubalus bubalis&lt;/i&gt;) bulls
Journal of Animal and Feed Sciences