Development of organs and fat deposition in indigenous goat kids under feed restriction

Abstract

The study aimed to evaluate the effect of feed restriction on the development of organs and fat deposition in castrated Caninde goats. Twenty one goats were distributed in a completely randomized design, with initial body weight of 15.9 ± 1.03kg. The goats were allocated into three levels of feed restriction (seven animals per level): ad libitum; moderate restriction (restriction of 20% on the amount of feed consumed by the animals fed ad libitum) and severe restriction (40% restriction on the amount of feed consumed by the animals fed ad libitum). The diet consisted of 55% forage (Tifton) and 45% concentrate. At 110 days of experiment, the goats were slaughtered with abody weight of 23.5kg ± 2.5kg. The components included the internal organs (spleen, heart, liver, pancreas, lungs, kidneys, blood) the emptied and cleaned digestive tract and fat deposits (in heart, mesenteric, omental and pelvic-renal) were weighed. Feed restriction in Canindé goats affected the weight of organs and fat deposition in regions more involved with the energy storage function (mesenteric, omental and pelvic-renal) (P < 0.05), however, feed restriction does not affect the percentage of the organs in relation to EBW (P > 0.05), indicating that even under feed restriction organ development is proportional to the development of the body.