01655naa a2200253 a 450000100080000000500110000800800410001910000170006024500570007726000090013452010490014365000120119265000100120465000120121465000170122665000100124365000120125365000170126565000100128265000170129270000170130970000200132677300550134615231482023-06-02       1976    bl uuuu     u00u1 u    #d1 aBUNCH, T. D.  aSheep-goat hybrid karyotypes.h[electronic resource]  c1976  aAbstract: A "Spanish" goat female was bred to a Barbados sheep ram and gave birth to twin offspring, one of each sex. The Fl female was backcrossed to a Barbados ram and also gave birth to twins, one of each sex. The Fl female has goat-like characters and the coloration of the Barbados. Although the female Barbados is polled, the Fl female hybrid has goat-like horns. The Fl male was lost before assessments could be made. The Fl hybrid possesses a diploid chromosome number of 57 and a karyotype containing 3 unpaired metacentrics, 5 unpaired and 23 pairs of acrocentric autosomes. The male and female backcrosses have Barbados characters and coloration; however, the female has goat-like horns. The male has Barbados or sheep-like horns. The backcrosses have diploid chromosome numbers of 55 and karyotypes containing 1 unpaired and 2 pairs of metacentrics and 2 unpaired and 23 pairs of acrocentric autosomes. The sex chromosomes consist of a large acrocentric X and a small bi-armed Y in the male and 2 large acrocentric Xs in the female.  aFemales  aGoats  aHybrids  aReproduction  aSheep  aCaprino  aHibridação  aOvino  aReprodução1 aFOOTE, W. C.1 aSPILLETT, J. J.  tTheriogenologygv. 6, n. 4, p. 379-385, Oct. 1976.