Time On Feed
Mostrando 13-24 de 298 artigos, teses e dissertações.
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13. Partial replacement of corn by soybean hulls in high-grain diets for feedlot sheep
Resumo: O objetivo deste trabalho foi avaliar a substituição parcial de milho por cascas de soja, em dietas de alta percentagem de grãos, e seu efeito sobre o comportamento alimentar e os parâmetros de fermentação ruminal em ovinos confinados. Oito carneiros com rúmens canulados foram distribuídos em quatro grupos experimentais, compostos de um contr
Pesq. agropec. bras.. Publicado em: 27/05/2019
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14. Stability and phosphorus leaching of tilapia feed in water
RESUMO: O presente trabalho tem como objetivo investigar a estabilidade de pellets e a lixiviação do fósforo na água proveniente de diferentes dietas formuladas para juvenis de tilápia do Nilo (Oreochromis niloticus), considerando distintas fontes de fósforo e diferentes tempos de exposição na água. Para tanto, foram elaboradas seis dietas com vari
Cienc. Rural. Publicado em: 23/05/2019
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15. Feed restriction of F1 Holstein × Zebu cows in the final third of lactation modifies intake, nutrient digestibility, feeding behavior, and performance
ABSTRACT The objective of this study was to evaluate the effect of quantitative feed restriction level on nutrient intake and digestibility, nitrogen balance, efficiency and feeding behavior, and productive performance of F1 Holstein × Zebu cows in late lactation. Sixty F1 Holstein × Zebu cows were used at the stage of late lactation (183.0±17.5 days of l
R. Bras. Zootec.. Publicado em: 15/04/2019
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16. Calcium particle size and feeding time influence egg shell quality in laying hens
ABSTRACT. An experiment with Leghorn laying hens was undertaken to determine the effect of oyster shell particle size and feeding time on different production variables, calcium retention, plasma calcium content and egg internal and external quality. Two hundred Leghorn layers (40 weeks old old) were allocated in five dietary treatments with four replicates
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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17. Avaliação do estresse e do desempenho de suínos na fase de creche, empregando-se técnicas de enriquecimento ambiental
RESUMO O enriquecimento ambiental é uma ferramenta importante dentro dos sistemas de produção, a fim de promover o bem-estar e favorecer a saúde dos animais. Portanto, o objetivo deste trabalho foi avaliar o efeito do enriquecimento ambiental sobre o estresse de suínos na fase de creche. Foram utilizados 32 leitões, alojados em granja experimental, dis
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
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18. Understanding heat stress in beef cattle
ABSTRACT Thermal stress is the result of a misbalance between heat produced or gained from the environment and the amount of heat lost to the environment. The level of thermal stress can range from minor or no effect to death of vulnerable animals. Under summertime conditions, thermal stress results in hyperthermia or heat stress. Heat stress in feedlot catt
R. Bras. Zootec.. Publicado em: 29/11/2018
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19. Animal performance and nutrient digestibility of feedlot steers fed a diet supplemented with a mixture of direct-fed microbials and digestive enzymes
ABSTRACT The objective of this study was to evaluate the effect of a mixture of direct-fed microbials (DFM), yeast, and digestive enzymes on animal performance in feedlot cattle, as well as digestibility when finishing feedlot cattle. Thirty crossbreed (Charolais × Beefmaster) steers averaging 15 months old and 321.83±3.73 kg of initial body weight were us
R. Bras. Zootec.. Publicado em: 29/11/2018
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20. Multivariate analysis of productive and nutritional traits and feeding behavior of sheep fed roughage-free diets
ABSTRACT The objective of this study was to evaluate productive traits in sheep fed roughage-free diets by multivariate analysis. Forty lambs were used in this study: 20 Santa Inês animals, consisting of 10 uncastrated males and 10 females; and 20 crossbreds (½ Santa Inês × Dorper), consisting of 10 uncastrated males and 10 females, at an average age of
R. Bras. Zootec.. Publicado em: 08/11/2018
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21. Intake and digestion of non-traditional feedstuffs by farmed collared peccary (Mammalia, Tayassuidae)
ABSTRACT To assess the ability of the collared peccary ( Pecari tajacu ) to digest dietary fiber, four adult male collared peccaries were randomly assigned to a 4 × 4 Latin square design to determine the effects of feeding non-traditional feed ingredients, taken from palm trees with different levels of dietary fiber, on intake and coefficient of total tract
R. Bras. Zootec.. Publicado em: 04/10/2018
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22. Surface Integrity Analisys in the Hard Turning of Cemented Steel AISI 4317
This work was based on the surface integrity analysis of hardened steel, AISI 4317 case carburized, quenched and tempered with 58 HRC, obtained by a turning operation executed with CBN (cubic boron nitride) tool, varying three basic cutting parameters (cutting speed, feed rate and cutting depth). The surface integrity characterization was conducted analyzing
Mat. Res.. Publicado em: 26/07/2018
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23. Effect of Hatching Time on Yolk Sac Percentage and Broiler Live Performance
ABSTRACT This study investigated the effects of broiler chick hatching time on the percentage of the yolk sac and subsequent broiler live performance. Broiler hatching eggs were obtained from a commercial flock at 55 wk of age and were stored for 2 d at 18°C and 75% relative humidity (RH) prior to incubation. Chicks were identified as hatching Early (471-47
Braz. J. Poult. Sci.. Publicado em: 2018-04
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24. Error variance of short duration sieving
Abstract In this study, the variance of ordinary sieving test error was determined concerning the specification limit of sized iron ore product by subtracting the fundamental error (described by the Gy's formalism for sampling), from the global error (recoverable from database of historical values). The results allowed the calculation of the confidence inter
REM, Int. Eng. J.. Publicado em: 2018-04