The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
Data consisting of 38,865 records of Large White pigs were used to estimate genetic parameters for days to 100 kg (DAYS) and backfat thickness adjusted to 100 kg (BF). Covariance components were estimated by a bivariate mixed model including the fixed effect of contemporary group and the direct and maternal additive genetic, common litter and residual random effects using the Gibbs Sampling algorithm of the MTGSAM program. Estimates of direct and common litter effects for DAYS and BF were 0.33 and 0.44 and 0.09 and 0.02, respectively. Additive genetic correlation between DAYS and BF was close to zero (-0.015). The heritability estimates indicate that genetic gains may be obtained by selection and that both traits should be considered in a breeding program for the Large White breed.
Estimation of genetic parameters for growth and backfat thickness of Large White pigs using the Gibbs Sampler
Barbosa,Leandro and Lopes,Paulo Sávio and Regazzi,Adair José and Torres,Robledo de Almeida and Junior,Mário Luiz Santana and Veroneze,Renata. Estimation of genetic parameters for growth and backfat thickness of Large White pigs using the Gibbs Sampler. R. Bras. Zootec. [online]. 2008, vol.37, 7, [cited 2026-10-08], pp.1200-1206. Available from: <https://rbz.org.br/article/estimation-of-genetic-parameters-for-growth-and-backfat-thickness-of-large-white-pigs-using-the-gibbs-sampler/>. ISSN 1516-3598. https://doi.org/10.1590/S1516-35982008000700009.
Barbosa,Leandro; Lopes,Paulo Sávio; Regazzi,Adair José; Torres,Robledo de Almeida; Junior,Mário Luiz Santana; Veroneze,Renata. Estimation of genetic parameters for growth and backfat thickness of Large White pigs using the Gibbs Sampler. R. Bras. Zootec., v.37, 7, p. 1200-1206. Jul. 2008. Available from: <https://rbz.org.br/article/estimation-of-genetic-parameters-for-growth-and-backfat-thickness-of-large-white-pigs-using-the-gibbs-sampler/>. acess on 08 Oct. 2026. https://doi.org/10.1590/S1516-35982008000700009.
Barbosa,Leandro, & Lopes,Paulo Sávio, & Regazzi,Adair José, & Torres,Robledo de Almeida, & Junior,Mário Luiz Santana, & Veroneze,Renata. (2008). Estimation of genetic parameters for growth and backfat thickness of Large White pigs using the Gibbs Sampler. R. Bras. Zootec., 37(7) , 1200-1206. https://doi.org/10.1590/S1516-35982008000700009.
BarbosaLeandro, LopesPaulo Sávio, RegazziAdair José, TorresRobledo de Almeida, JuniorMário Luiz Santana, VeronezeRenata. Estimation of genetic parameters for growth and backfat thickness of Large White pigs using the Gibbs Sampler. R. Bras. Zootec. [Internet]. 2008 Jul [cited 2026 Oct 08]; 37(7): 1200-1206. Available from: https://rbz.org.br/article/estimation-of-genetic-parameters-for-growth-and-backfat-thickness-of-large-white-pigs-using-the-gibbs-sampler/. https://doi.org/10.1590/S1516-35982008000700009.
Figure 9
Differential abundance of taxa between treatments for Fimenecus sp004556705 (A) and NSJ-53 sp014384795 (B) species on day 21 of lactation in 8 sows per treatment fed to one of three dietary treatments: 1) a diet containing xylanase (Control; valorization of 40 kcal of ME/kg diet, CD40), 2) CD40 + β-mannanase (0.3 g/kg, valorization of 45 kcal ME/kg diet, CD85), and 3) CD40 + β-mannanase (0.3 g/kg, valorization of 60 kcal ME/kg diet, CD100).
