Intake of tropical grass forages alone is generally insufficient to avoid nutrition imbalances and reduced animal performance; therefore, supplementation often recommended. The hypothesis the present study that when combined with fat, soybean hulls (SH) could replace corn as a source energy, reducing methane production without affecting performance. This evaluated effects starch-based level oil on intake, digestibility, performance, emissions growing Nellore bulls (P = 44; initial BW 250.69...

Supplementation of grass-fed cattle with low-cost feeding alternatives may be an attractive way to improve efficiency production. We hypothesized that inclusion crude glycerin (CG) in supplements provided could feed conversion without negative effects on growth performance while reducing methane emissions. Our hypothesis was tested using Nellore bulls grazing tropical pasture ( = 50; initial BW 427 ± 19.41 kg; age 17 2 mo) supplemented increasing concentrations (0, 70, 140, 210, and 280 g/kg...

The effects of overfeeding with protein different degradability on body condition, plasma urea nitrogen and progesterone concentrations, ovulation number follicular dynamics were assessed in Santa Ines ewes. Twelve ewes assigned to a randomized block design according weight received soybean meal or corn gluten maintenance diet for 28 days before during the next estrous cycle. Blood samples taken 7, 14, 21, after beginning treatments analysis 3, 6, 9, 12, 15 into cycle progesterone....

SUMMARY The use of diets with increasing proportions concentrate to fibre can ensure appropriate energy levels and result in greater efficiency Nellore feedlot steers. It was hypothesized that higher the diet these steers may affect ruminal fermentation microbiota as a consequence pH reduction. present study conducted evaluate effect four different roughage (hay Tifton 85) : ratios on intake, digestibility, rumen Higher did not intake digestibility dry organic matter. concentration N-NH 3 ,...

The objectives of this study were to evaluate the effect forages with different nutritional values - specifically, corn silage (CS), sugar cane (SC), and bagasse (SB) in diets crude glycerin, on carcass traits, meat quality, fatty acid profile, using young Nellore bulls finished feedlot. Thirty an initial average body weight 416.70±24.74 kg randomly assigned three treatments containing sources forage. traits variables related quality not significantly influenced by forage glycerin. yellow...

Methane emissions (CH4) from enteric fermentation represent an energy loss to the animal ranging 2% 12% of gross (GE) intake; therefore, challenge is develop diets and handling strategies mitigate CH4 emissions. This study tested hypothesis that fat supplementation as a source could reduce without decrease production, independently starch level utilised. Thus, goal this was assess combined effects high- or low-starch supplements with oil (soybean grain) on intake, digestibility, performance,...

The objective was to evaluate levels of multiple supplements supplied beef heifers in low supply pasture on intake and nutrients digestibility, pH concentration ruminal ammonia nitrogen, nitrogen balance, synthesis microbial efficiency. Five Nellore with initial body weight 344.00 ± 21.10 kg average age 22 months were used. following evaluated as fed the animals: control (mineral supplement) supplementation 2, 4, 6 8 kg/animal/day, composing percentages (BW): 0.55, 1.11, 1.66 2.22%,...

Forty young Nellore bulls were used to determine the effects of different sources forage in concentrate-rich diets containing crude glycerine on feed intake, performance, and enteric methane emissions. Ten animals (397 ± 34 kg 20 2 months age) slaughtered estimate initial carcass weights, remaining 30 (417 24.7) randomly assigned three treatments with 10 replicates. The consisted [NDF from (fNDF) was fixed 15% dry matter]; corn silage, sugarcane, sugarcane bagasse; rich concentrates 10%...

Este estudo foi realizado com o objetivo de avaliar a concentração plasmática N-ureico, número ovulações e diâmetro do folículo ovulatório ovelhas da raça Santa Inês submetidas sobrealimentação fontes proteína diferentes degradabilidades ruminais. Quarenta quatro estro sincronizado receberam dietas isoproteicas, formuladas farelo soja (n=24) ou glúten milho algodão (n=20) durante 28 dias antes ovulação. Os animais foram distribuídos em delineamento blocos, os blocos formados por três faixas...

Expansion of the biodiesel industry has increased crude glycerin (CG) supply. Crude potential replacing corn in ruminant diets because glycerol can be converted to glucose liver ruminants, providing energy for cellular metabolism. The objective was evaluate effects CG with urea, soybean meal, cottonseed and gluten feed, respectively, on intake, digestibility, microbial protein yield, efficiency N utilization. Five Nellore bulls (initial BW 448 kg [SD 14]) grazing tropical pasture were used a...

This study aimed to evaluate the effect of replacement ground corn by soybean hulls associated or not whole grain in feed supplement on intake, nutrient digestibility, rumen microbial population, and fermentation parameters growing Nellore steers grazing Brachiaria brizantha cv. Xaraés during rainy season. Were used eight castrated (425 ± 36 kg body weight (BW)) fitted with ruminal duodenal cannulas a replicated 4 × Latin square 2 factorial arrangement, allocated into paddocks 0.25 ha each,...

O objetivo do trabalho foi avaliar comparativamente as características de carcaça e a composição corporal machos jovens da raça Nelore não-castrados, filhos touros com diferencial positivo (Linhagem Seleção) ou nulo Controle) para ganho peso aos 378 dias idade. Utilizaram-se informações 92 zebuínos Nelore, abate médio 456,00 kg, sendo 51 animais pertencentes à Linhagem Seleção 41 Controle, foram criados em pastagens cultivadas até os 18 meses, quando alocados nos dois sistemas terminação,...

The objective was to evaluate performance and economic viability of protein supplementation grazing beef cattle in the wet dry-wet transition season. Eighty non-castrated Nellore steers, body weight 371 ± 11.3 kg were used experiment. treatments following: SM – Mineral supplement; Protein mineral supplements (SMP 20% FS - soybean meal: 410 g/animal; SMP 40% UR urea: 223 UP protect 236 g/animal). It a complete random design with 20 replicates per treatment. There difference results...

The objective was to evaluate the performance and production costs of Nellore steers growing on Brachiaria brizantha cv. Marandu during dry season receiving mineral supplements with partial replacement corn by residual glycerin. 40 initial body weight 203.12 ±20.10 kg average age 12 months, distributed into eight paddocks 1.6 ha each, were used. experimental design completely randomized five replicates supplements. Supplements levels glycerin evaluated: 0% (G0), 10% (G10), 20% (G20), 30%...

O objetivo deste experimento foi determinar a qualidade e o valor nutritivo de silagens do subproduto da pupunha, produzidas com aditivos, conforme os tratamentos: T1 - Testemunha (sem aditivo); T2 Adição 2,5% açúcar; T3 10,0% polpa cítrica T4 milho moído, base matéria natural. Verificou-se que adição 10% (PC) ou moído (MM) elevou teor seca massa ser ensilada, bem como silagem, em 6,5 8,0 unidades percentuais, respectivamente. Silagens aditivos apresentaram menores valores nitrogênio...

O manejo intensivo favorece a ocorrência de afecções podais inflamatórias ou infecciosas nos animais produção. objetivo do presente trabalho foi determinar o impacto tipo piso sobre casco ao analisar morfometria externa dos dígitos bovinos Nelore confinados e em pastagem e, ainda, verificar eficácia da análise exploratória multivariada para esse conjunto dados. Foram avaliados vinte quatro sendo doze mantidos confinamento restante no pasto. abate ruminantes realizado aos 20 meses idade....