Because of supply problems it was necessary to change the protein supplement from meat and bone meal to extracted soya-bean after 40 days on the diets.
It was concluded that growing cattle given chopped sugar cane have no requirement for B-vitamins above those provided by 600 g/d meat and bone meal or 600 g/d soya-bean meal.
Key words: Sugar cane, cattle, fattening, B-vitamins Deficiencies of vitamins of the B complex are not normally found in ruminants, and it is generally considered that the rumen microorganisms synthesize sufficient for the host animals requirements (Hungate 1966; ARC 1965), although it is not known to what extent the animal depends on the vitamins supplied by the diet to supplement synthesis by the rumen microorganisms.
Lora and MacLeod (1976) were unable to find a growth response to the B-vitamins by animals given a diet based on sugar cane and molasses/urea at 5%.

huxford2

kBa, p65, p50, amino acids, dimerization domain, ankyrin repeats, residues, DNA, NF-kB, binding, IkBa, heterodimer, sequences.

After activation, NF-kB is removed from gene promoters through association with nuclear I kBa, restoring the preinduction state.
Amino acid residues immediately preceding the nuclear localization signals of both NF- kB p50 and p65 subunits are tethered to the I kBa aminoterminal ankyrin repeats, impeding NF- kB from nuclear import machinery recognition.
The first and last ankyrin repeats contribute only b strand each, and as a result, n ankyrin repeats create n-1 finger-like projections.
Throughout this paper b kBa Figure 3.
Waals contacts of I kBa residues Met-279, Pro-281, Trp- might lead to more effective inhibition of NF- kB DNA 258, and Gln-278 and the amino-terminal domain of p65, binding by I kBa.

1_2_3

vitamins, sugar cane, feeds, animals, live weight, fresh, diets, urea, injection, supplement, replication, vitamin deficiency, weight gain.

18 Zebu steers of 300 kg initial weight were allocated to 9 groups of 2 animals and used to compare the following treatments: control; B vitamins injected; B vitamins in the feed.
The average rate of live weight gain during the 70 day trial was 500 g/d and there was no evidence of response to the vitamin treatments.
Generally, ruminants do not present problems of B vitamin deficiency since these are synthesised by rumen microorganisms.
However, the majority of natural feeds contain important amounts of these vitamins, and it is not known to what extent the animals depend on rumen synthesis on the one hand and dietary supply on the other.