Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Svetoslava STOYCHEVA, Tsvetelina DIMITROVA, Tsvetomira BANCHEVA, Nikolay MARKOV
The aim of our study was to investigate the relationship between some placental parameters such as Placental weight (PW), Cotyledon number (CN), Placental efficiency (PE) and Cotyledon density (CD), as well as the Litter weight (LW) with the genotype of goats, type of birth and the gender of kids. The study was conducted in the goat farm of the RIMSA, Troyan, Bulgaria. The study involved 94 goats of 53 Bulgarian White Dairy breed (BWD) and its crossbreeds with Anglo-Nubian (AN)21 and Togenburg (TG)20. The results showed that PE in goats BWD was significantly higher compared to BWD x AN, BWD x T. There was a strong downward relationship between PW and PE. A significant downward relationship between PW and CD was found in all three genotypes. The PW of twins is higher than that singles (p<0.01). The total CN in twins is higher than in singles (p<0.01). A significant positive relationship was found between PW and LW in all studied genotypes and was highest in BWD x AN (p>0.05). A significant positive relationship was found between PW and the total CN in BWD.
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