Abstract
The aim was to study the variation in the amount of adipose tissue, size and number of adipocytes and lipogenic enzyme activities in does with different body condition scores (BCS). These parameters were studied in the omental (OM), mesenteric (MES), perirenal (PR), subcutaneous (SC) and intermuscular (IM) fat depots of 22 adult, non-pregnant and non-lactating Blanca celtibérica does, with a BCS ranging from 1.5 to 4.5 (scale 0–5). SC adipose tissue showed the highest deposition-mobilization phase (highest fat relative to the variation per BCS unit of 74%), followed by OM (65%), PR (63%), MES (48%) and IM (46%) adipose depots. Adipocyte size varied with the amount of fat ( P < 0.001), while the SC depot was the only depot that showed a positive correlation between adipocyte number and BCS ( r 2 = 0.20; P < 0.05). The activities of glycerol 3-phosphate dehydrogenase (G3PDH) and fatty acid synthetase (FAS) enzymes were not generally affected by BCS, due to the fact that animals were on a maintenance diet prior to slaughter. The findings obtained in this work indicate that the processes of storage and mobilization of fat reserves in adult goats are principally due to variation in the size of the adipocyte cells. Therefore, the use of BCS could be a good method for predicting nutritional status in goats.
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