Height growth curve parameters of Nellore, Angus x Nellore, Canchim x Nellore and Simmental x Nellore females.

Enter multiple e-mails separated by comma.

imagem

Author(s): ALENCAR, M. M. de; BARICHELLO, F.; FREITAS, A. R.; BARBOSA, P. F.

Summary: The objective of mis study was to estimate the height growth measured on me hip from eight to 90 months of age (t) of femaIes of four genetic groups (GG): Nellore(NEL), Angus x Nellore (AN), Canchim x Nellore (CN) and SimmentaI x Nellore (SN). The animais were bom in two seasons (E: autumn and spring) and were submitted to three levels of supplementation (Treat), depending on me season (0.0 and 3.0 kg of concentrare for animais born in autumn, and 0.0. 1.5 and 3.0 kg of concentrare for animaIs born in spring). The estimate of height growth. as a function of t. was reaIized by Brody's non-linear model with parameter A (height at maturity). b (parameter mat shaped me curve) and k (rate of growth. rI). Using me MIXED procedure of SAS. me effects of GG. E, GG x E, and Treat( GG x E) on A, b and k were studied. The effect of GG on A was significant (P<0.05). indicating mat me genetic groups showed different height at maturity. For me parameters b and k. me effect ofTreat(GG x E) was significant (P<0.05). suggesting mat me effect ofTreat depended on GGxE.

Publication year: 2008

Observation

Some of Embrapa's publications are published as ePub files. To read them, use or download one of the following free software options to your computer or mobile device. Android: Google Play Books; IOS: iBooks; Windows and Linux: Calibre.

 


Access other publications

Access the Agricultural Research Database (BDPA) to consult Embrapa's full library collection and records.
Visit Embrapa Bookstore to purchase books and other publications sold by Embrapa.