Influências maternas sobre o crescimento até um ano de idade em bovinos Guzerá. II. Herdabilidades e correlações genéticas entre efeitos diretos e maternos

Content Provider	Semantic Scholar
Author	Mazza, Maria Cristina Medeiros Pereira, Carmem Silva Fonseca, Cleusa Graça Da
Copyright Year	1990
Abstract	Data collected at the Canoas Farm (State of Minas Gerais, Brazil), from 635 Guzera calves – 380 males and 255 females – out of 26 bulls and 194 cows, were analyzed. The analysis consisted of estimating correlations between genetic direct and maternal effects and the heritabilities of the direct effects (h 2 MIP and h 2 MIM ), maternal effects (h 2 Am ) and total heritability (h 2 t ). The h 2 MIP were 0.15, 0.23 and 0.25 and h 2 t were 0.29, 0.10 and 0.23 for birth, weaning and yearling weight, respectively. The h 2 Am (0.81) was bigger than h 2 MIP (0.23), for weaning weight. The genetic correlations between direct and maternal effects was positive for birth weight and negative for 205 and 365-days weight, indicating genetic antagonism between those effects for weaning weight, and, in smaller proportion, for yearling weight and the necessity to consider maternal effects in selection procedures to maximize genetic responses.
Starting Page	1311
Ending Page	1315
Page Count	5
File Format	PDF HTM / HTML
Volume Number	25
Alternate Webpage(s)	http://seer.sct.embrapa.br/index.php/pab/article/download/19475/12534
Alternate Webpage(s)	https://seer.sct.embrapa.br/index.php/pab/article/download/19474/12532
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article