MARQUES, D. D.; http://lattes.cnpq.br/0155293536035748; MARQUES, Daniel Dantas.
Résumé:
This study aimed to evaluate some centesimal composition -
moisture content, total solids (TS), ash, proteins and lipids, physical and chemical
characteristics - weight loss in cooking (WLC), shear force (SF) and color) related to
meat quality of Santa Ines lambs undergoing a period of restriction and subsequent
refeeding in the nordestino semiarid. A total of 40 Santa Inês lamb whole, with average
initial weight 17 ± 1,7 kg and 100 days old. The study was conducted in two
experimental steps: 1) The period of food restriction (42 days), animals were divided
into four treatments (T0, T20, T40 and T60, the figures indicating the percentage of
food restriction) and ten repetitions of the T0 animals were fed ad libitium and
restriction of other treatment was calculated for animals of this treatment. 2) Period of
refeeding (42 day), animals from all treatments were fed ad libitium, and the complete
type of food provided and the 7:00 am and 15:00 pm. At the end of the refeeding the
animals were slaughtered and their carcasses were cooled and was subsequently divided
longitudinally into left and right, the region of the left half of the half backs of all the
carcasses were removed and packed in labeled plastic bags and frozen in freezer (- 18 º
C) for analysis was taken from the Longissimus dorsi. Animals that experienced a food
restriction of 20% showed a higher percentage of protein (24,99%) while that of T60
animals the lowest percentage (23,56%), not interfering in the general quality of the
meat. The other parameters showed no significant difference (P> 0,05) compared with
levels of restriction. Animals undergoing a period of 42 days with different levels of
restriction, and later to 42 days of refeeding did not have lower quality of meat of
animals that suffered no period of restriction.