Abstract :
An experimental trial of the segregation of white vs. pigmented and black vs. brown colours
in alpacas was conducted at the Peruvian INIA Quimsachata Experimental Station. One hundred
and forty five offspring were born from the following matings: 4 white sires×36 white
dams, 4 white sires×39 pigmented dams, and 9 pigmented sires×70 pigmented dams.
Among these last matings were, 4 black sires×25 black dams, 2 black sires×20 brown
dams, and 3 brown sires×25 brown dams. Statistical tests validate that the inheritance of
white is due to a single gene which is dominant over pigmentation, without any modifying
effect and independent of segregation of black and brown patterns. However, the evidence
does not support a simple dominant inheritance of the black vs. brown.
