Condição corporal ao parto e perfil metabólico de cabras alpinas no início da lactação

Abstract

Este artigo foi recebido em 4/7/2007 e aprovado em 6/11/2008 respectivamente, e os valores de BHBA ao parto, de 10,31 ± 3,0 mg/dL para os animais magros; 6,88 ± 0,9 mg/dL para os intermediários; e 4,21 ± 0,8 mg/dL para os animais gordos. Os valores de glicose ao parto foram de 112,54 ± 15,4 mg/dL para os animais magros; 90,93 ± 13,5 mg/dL para os animais intermediários; e 132,47 ± 26,7 mg/dL para os animais gordos.Os valores médios de colesterol total e de HDL nas oito primeiras semanas pós-parto foram de 109,01 ± 2,5 e 54,9 ± 1,39 mg/dL para os animais magros; 83,0 ± 21,7 e 56,0 ± 1,30 mg/dL para os intermediários; e 84,3 23,9 e 54,5 ± 1,93 mg/dL para os gordos. As alterações no metabolismo energético de cabras leiteiras de média produção diminuem, independentemente da condição corporal ao parto, quando fornecida dieta de alta qualidade e com altos níveis de energia.Palavras-chave: caprino, condição corporal, perfil metabólico, pós-parto Body condition and metabolic profile of Alpine goats at the onset of lactationABSTRACT -An experiment was carried out to study the influence of the body condition score at birth on blood metabolites of goats in early lactation. Sixty-eight goats were placed in three groups according to the body condition score (BCS) at parturition: from 1.00 to 2.75 (thin animals); 2.75 and 3.50 (intermediate body condition) and from 3.50 to 5.00(fat animals). The experimental was carried out in the first sixty days of lactation and blood sampling started after parturition at weekly intervals up to the eighth week of lactation. Analyses were made of the non-esterified fat acids (NEFA), betahydroxibutirate (BHBA), glucose, total cholesterol and high density lipoprotein (HDL). The plasma concentrations of the metabolites did not differ among the groups. The NEFA concentrations in the animals in the three groups at birth and in the first eight weeks of lactation were 658.46 and 232.90 mg/dL, respectively and the values of BHBA at birth were 10.31 ± 3.0 mg/dL for the thin animals, 6.88 ± 0.9 mg/dL for the intermediate animals and 4.21 ± 0.8 mg/dL for the fat animals.The glucose values at birth were 112.54 ± 15.4 mg/dL for the thin animals, 90.93 ± 13.5 mg/dL for the intermediate animals and 132.47 ± 26.7 mg/dL for the fat animals. The average of total cholesterol and HDL in the first eight weeks after birth were 109.01 ± 2.5; and 54.9 ± 1.39 mg/dL for the thin animals, 83.0 ± 21.7 and 56.0 ± 1.30 mg/dL for the intermediate animals and 84.3 ± 23.9 and 54.5 ± 1.93 mg/dL for the fat animals. The changes in the energy metabolism of dairy goats with medium production decreased, regardless of the body condition at birth, when supplied with high quality feed with high energy levels.

Influence of calcium concentrations on the metabolic profile of dairy goats during the transitional period

“…The glucose serum concentrations obtained in this study agree with the results reported by Santos et al (2012) for sheep, by Grummer (1995) for cows and by Barbosa et al (2009) for dairy goats. Those authors found higher values of this variable at parturition relative to the postpartum period, with different body condition scores (BCS) observed at calving.…”

“…The increase in postpartum cholesterol and the reduction in triglycerides found in this study were reported by Bennis et al (1992) and Iriadam (2007) for dairy goats and by Basoglu et al (1998) for dairy cows. Furthermore, Barbosa et al (2009) suggested that the low prepartum cholesterol concentrations may result from the use of cholesterol by the fetus; progesterone and adrenal hormone synthesis may also reflect this use to a lesser extent. The cholesterol increase in the postpartum period may be associated with increased dry matter intake and energy concentration in the diet (Ríos et al, 2006).…”

A Field Trial on the Effect of Propylene Glycol on Dairy Nanny Goats Welfare During Critical Transition Stages

“…The PG groups recorded lower (P<0.05) βHBA concentration than that in the control group during days of pre and postpartum. Barbosa et al (2009) observed low βHBA concentration at parturition with a gradual decrease up to the 8 th week of lactation in goats with different degrees of body condition score and related this finding also, the use of this metabolite by the mammary gland for the milk fat synthesis. Beside, Hamzaoui et al (2014) observed lower βHBA concentration in goats received PG than control group; it reached to 0.48 and 0.65 mmol/L, respectively.…”

Effects of Dietary Sodium Monensin on the Metabolic and Hormonal Profiles of Dairy Goats During the Peripartum Period

“…Some studies in goats and dairy cows show a decrease in prepartum cholesterol levels due to its requirements for fetal growth and steroid hormone synthesis. In turn, in the postpartum period, concentrations of cholesterol in dairy animals reach their maximum, as there is a gradual increase due to glucagon influence and the synthesis of plasma lipoproteins (22,27,28,29) . In the present study, this increase was not verified, possibly because of the variability of factors such as milk production, lactation period, and the diet provided.…”