A. Imai, A. G. A. Tundisi e F. P. Lima.
Engorda de bovinos zebus sem administração de cloreto de sódio.
influência da adrninistraçao do cloreto de sódio, na engorda de bovinos zebus
em regime de pasto..Adotou-se delineamento
experimental em blocos casualizados em número de 5, com 2 tratamentos e 2
repetições dentro tios blocos, perfazendo 1 repetições, por tratamento.O lote “A” que
recebeu NaC1 à vontade, ganhou no fim de 216 dias de experimento, 1.587 kg e o lote 4B’, sem
NaC1, 1.650 k, sem diferença estatística significante entre os tratamento e
blocos ao nível de 5%. Admitiu-se, como provável, que os animais teriam
recebido a quantidade de sal suficiente através da ingestão de capim, água e
Fattening of zebus whithout administration of sodium chloride.
Ten castrated male zebus of the Nellore race were fattened
on pastures of Panicum maximum without administration of NaCl (commercial
common salt) while ten other male zebus of the same race that had free access
to Sodium Chloride were taken as witnesses. During this period the animals of
the witness group consumed on the average 36.5 g per head/day.In the animals of the B lot, as symptorns of
deficiency, a marked desire for Sodium Chloride and a depravation of the
appetite were observed. The anmals showed avidity for urine and also licked the
posts of the fences. The weight gains, meanwhile, were normal and there was no
significante statistical diference between the two lots.In a anterior work, LMAI and coil. (5).
ascertained in growing zebu heifers put to graze on Panicum maximum for the 29
months that the administration of Sodium Chioride díd not leave any influence
on the weight gain. The same fact now occurs with castrated male animals in the
course of fattening.Flowerer, as the animals had received salt
before the experiment it did not become clear that the administration of Sodium
Chioride was completely unnecessary for bovine put lo graze on Panicum maximum
ou the red land of Ribeirão Preto (Latosolic B Terra Roxa). They may also have
received, besides, Sodium Chloríde from the grass (0.21% of chlorides) and from
the water (0.03 1 g/1.000 ml of chlorides in general) consumed.