An injection of 3 mg microencapsulated vitamin B12 given to lambs at tailing will treat Co deficiency and will increase and maintain liveweights in a flock for up to 8 months.
Serum MMA concentration may offer advantages over serum vitamin B12 concentrations in the diagnosis of a cobalt/vitamin B12 responsiveness in weaned lambs.
Supplementing ewes with cobalt bullets in late pregnancy can improve the vitamin B12 status of their lambs, and modify their response to vitamin B12 supplementation.
An assay was conducted to test the value of traditional and legume improved stubbles when fed to beef steers, in Aramis, Olancho, Honduras (dry tropical forest). A complete randomized block experimental design was used, with an area of 5000 m2 for each model, weaned cross-bred (brahman x creole) steers with an average weight of 150 kg and the legume Lablab purpureus planted at the coro hiUing. The four treatments evaluated were: 1. Grazing on the traditional stubble, 2. Grazing on the improved stubble, 3. harvested traditional stubble (confinement) and 4. Harvested improved stabble confinementThe weight gain was significant (P< =0,01) among treatments. The highest weight gain of 1019 g/animal/day was obtained with the group that grazed on improved stubble and the lowest gain (548.1 g/day) with the harvested traditional stubble. The animal/ha weight gain, adjusted at 6 weeks of roughage management, showed superiority of the improved stubbles (5.8 and 2.9 kg/ha/day, respectively).
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