TITO, C. I. S.; http://lattes.cnpq.br/6229127868435715; TITO, Cintya Ionara da Silva.
Abstract:
The experiment was conducted at the University Federal of Campina Grande
(UFCG) campus Patos / PB. 24 goats were used, not castrated, averaging 20
kg of body weight (BW). The feeding system consists of grazing from 8:00 to
16:00, when it was collected to the stalls to receive supplementation. The
experimental area was 2,4ha, divided into four paddocks of 0,6ha, provided with
shelter and water cooler, and every other day the animals were changed picket.
The supplement based concentrate was formulated to meet a requirement for
ganho150g / day for goats 20 kg LW supplied in a proportion of 1.5% BW,
whereas 50% of the diet would be provided by the pasture. Treatments
consisted in replacing the concentrate at 0%, 10%, 20% and 30% of white
mallow hay. By completing 75 of experiment, the animals were caught and
slaughtered obtaining live weight at slaughter (PVA). Were gutted, removed the
head, fur, paws, respiratory tract, gastrointestinal tract, and other non -housing
constituent, obtaining the hot carcass weight (HCW). The gastrointestinal (GI)
tract was weighed full and empty, as well as bladder and gallbladder, to obtain
the empty body weight (EBW). After casting cooling period was obtained cold
carcass weight (CCW). With these mentioned weights were estimated income
from caraça also weighed the organs and viscera, to estimate the weight and
the income from them. The left housing divided into: neck, shoulder, ribs, loins
and legs that were dissected into subcutaneous fat, intermuscular fat, bone,
muscle and other tissues. The design was completely randomized, with four
treatments and six replications. The substitution provided housing similar
weights, but with lower yields. Introducing the head, tongue, rumen and spleen
with higher yield. It did not affect muscle income cuts except the neck
decreased and only the fillet had its weight reduced by substitution. The sidecut
of fat and loin were reduced in weight and yield, however the palette fat only
varied as the absolute weight. To obtain carcasses with lower proportion of fat
in the commercial cuts, leg, loin, shoulder and sidecut and equal ratio of muscl e
any of the replacement levels can be recommended for crossbred goats (Boer
X SPRD) finished in thinned caatinga and enriched with grass buffel.