Trace-mineral salt for steers on a fattening ration (Concrete and shelter vs. dirt and no shelter) with observations on shrink

Previous data reported from this station seem to indicate that supplemental dietary trace minerals may be valuable under certain feeding conditions. Those data also indicated that trace minerals might be related to weight loss during shipping. This study was designed to further determine the value of supplemental dietary trace minerals when cattle were on concrete and had shelter available and when they were on dirt with no shelter

The use of tranquilizer compounds in wintering rations for steers.

Recent experimental work with chemical tranquilizers has indicated that these substances may be of value in the fattening ration of beef cattle under certain conditions. Theoretically at least, the chemical tranquilizers should calm the animals and thus reduce the amount of energy lost due to nervousness and unnecessary muscular activity. It is also possible that they have some other effect upon the animal which leads to increased weight gains and improved feed efficiency. The trial reported herein• was designed to determine whether or not tranquilizer compounds will improve the performance of beef cattle on a wintering ration

Response of fattening steers to oral or injected vitamin A, with observations on shrink

Steers used in an antibiotic study and a trace mineral study reported elsewhere in this publication were also used in a study designed to further evaluate the use of supplemental vitamin A during the fattening period. The animals used showed no visual symptoms of vitamin A deficiency any time. However, the diets fed and the management practices followed were similar to those in studies at other stations where supplemental vitamin A was evaluated

Diethylstilbestrol implant plus oral Chlortetracycline vs. Oral Chlortetracycline alone for fattening steers

Hereford steers used in this study were fed in outdoor dirt lots without shelter. Each steer in lot 23, described in a trace-mineral study reported elsewhere in this publication, received a 24-mg. implant of diethylstilbestrol on the first day of the feeding period. Steers in both lots received 70 mgs. of oral chlortetracycline each day during the feeding period

PRODUÇÃO ANIMAL EM PASTAGEM DE MILHETO SOB DIFERENTES NÍVEIS DE NITROGÊNIO ANIMAL PRODUCTION IN PEARL MILLET PASTURE UNDER DIFFERENT NITROGEN LEVELS

O experimento foi conduzido em área da Universidade Federal de Santa Maria, RS, com o objetivo de verificar os efeitos de três níveis de adubação nitrogenada (0, 150 e 300 kg/ha de N) em pastagem de milheto (Pennisetum americanum (L.) Leeke) cv. Comum, sobre a produção animal. Foram utilizados novilhos de corte e avaliados o desempenho por animal, o número de animais.dia/ha e o ganho de peso vivo por área. O sistema de pastejo adotado foi o contínuo, com ajustes de carga para manter uma pressão de pastejo de 10%, caracterizando um resíduo médio de 3.168 kg de matéria seca/ha. As variáveis dependentes mostraram relação linear positiva com os níveis de adubação nitrogenada, o que denota o alto potencial do milheto.<br>An experiment was conducted at the Universidade Federal de Santa Maria, in Santa Maria, RS, Brazil, with the objective of evaluating the effects of three N levels (0, 150 and 300 kg/ha), in pearl millet (Pennisetum americanum (L.) Leeke) cv. Comum, on animal production. Beef steers were assayed through daily liveweigh gain, gain per hectare and animals.day/hectare. A continuous grazing system was used, with stocking rate adjustments to maintain a 10% grazing pressure that characterized a medium residue of 3,168 kg of DM/ha. The dependent variables showed a positive linear relationship with the N levels, denoting the high animal production potential of pearl millet

Efeitos da monensina no desempenho de bezerras leiteiras em crescimento Effects of monensin on growing dairy heifers performance

Foi estudado o efeito da suplementação de monensina sobre o desempenho de 32 novilhas Holandesas em crescimento, com peso médio de 84 kg, durante quatro meses . Os animais suplementados com monensina apresentaram maior peso e perímetro torácico aos 90 e 120 dias de experimentação, maior ganho de peso, mostrando um valor de 26,56% maior do que os animais controle. Não foi observada diferença no comprimento corporal e glicose sangüínea, enquanto a altura na cernelha apresentou tendência a valores mais altos nos animais suplementados. Concluiu-se que a suplementação de monensina resultou em maior desenvolvimento dos animais, podendo proporcionar precocidade reprodutiva e produtiva de novilhas leiteiras de reposição.<br>The performance of 32 growing Holstein heifers, with average weight of 84 kg and supplemented with monensin, during four months, was studied. The animals supplemented with monensin presented higher weight and hearth girth at 90 and 120 days of experiment, higher weight gain, with value of 26.56% superior than the control animals. No difference was observed for the corporal length, plasma glucose and the height values. The animals fed monensin presented higher height values. The animals supplemented with monensin showed better development. The use of monensin provided reproductive and productive precocity for the replacement dairy heifers