2012
DOI: 10.1590/s1516-35982012000500029
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Abstract: -This study was designed to investigate the effect of early weaning and concentrate supplementation on performance and metabolic profile of lambs in four production systems on pasture: suckling lambs not supplemented until slaughter; suckling lambs supplemented with concentrate in creep feeding until slaughter; early weaned lambs not supplemented until slaughter; early weaned lambs supplemented with concentrate until slaughter. Performance was assessed by average daily gain (ADG) and body condition score (BCS)… Show more

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Cited by 10 publications
(11 citation statements)
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“…According to Silva et al (2010) and Chai et al (2015), lambs older than 30 days already present rumination and become proficient in the use of nitrogenous compounds from the diet, which causes a gradual increase in albumin concentrations until 90 days, as observed in this study. The decrease observed at 120 days, as a delayed response from albumin, in turn, might have been caused mainly by weaning, since depriving the lambs of milk reduces the total dietary protein and energy intake (as observed at 76-90 days; Table 3) and, consequently, the use of available forage protein and albumin synthesis (Fernandes et al, 2012;Santos et al, 2017). It is noteworthy that the dynamics of albumin is not only changed by nutrition, but also by the ability of the liver to synthesize it, which, during the neonatal period, is still influenced by the development and maturation of hepatic metabolic processes (Mohri et al, 2007;Souza et al, 2014).…”
Section: Discussionmentioning
confidence: 97%
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“…According to Silva et al (2010) and Chai et al (2015), lambs older than 30 days already present rumination and become proficient in the use of nitrogenous compounds from the diet, which causes a gradual increase in albumin concentrations until 90 days, as observed in this study. The decrease observed at 120 days, as a delayed response from albumin, in turn, might have been caused mainly by weaning, since depriving the lambs of milk reduces the total dietary protein and energy intake (as observed at 76-90 days; Table 3) and, consequently, the use of available forage protein and albumin synthesis (Fernandes et al, 2012;Santos et al, 2017). It is noteworthy that the dynamics of albumin is not only changed by nutrition, but also by the ability of the liver to synthesize it, which, during the neonatal period, is still influenced by the development and maturation of hepatic metabolic processes (Mohri et al, 2007;Souza et al, 2014).…”
Section: Discussionmentioning
confidence: 97%
“…However, when large amounts of protein are fermented in combination with low availability of energy from carbohydrate degradation, a high rumen ammonia concentration is generated. The capacity of ammonia utilization by ruminal microorganisms is exceeded, so the excess is absorbed into the enterohepatic circulation, and in the liver is converted into urea, which, added to urea from amino acid metabolism, constitutes the major portion of plasma urea (Fernandes et al, 2012;Karimizadeh et al, 2017;Geron et al, 2018). However, it can be observed that the energy requirement for the lambs in this study was practically met (Table 3), with only a small deficit in its balance at 91-120 days, while the protein deficit was much higher (not being the protein requirement fully met).…”
Section: Discussionmentioning
confidence: 99%
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“…Para tal, faz-se necessário o cuidado especial com a ovelha na fase de amamentação para assegurar resposta produtiva positiva neste período. A literatura (Poli et al, 2008;Fernandes et al, 2012) tem abordado com frequência o efeito dos sistemas de produção sobre a resposta produtiva dos cordeiros, entretanto pouco se sabe sobre o efeito dos sistemas de terminação sobre a reposta produtiva das ovelhas.…”
Section: Introductionunclassified