7 resultados para Microminerals
em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"
Resumo:
The present study was carried out with the objective of evaluating the effects of feeding dairy cows with organic or inorganic sources of zinc (Zn), copper (Cu) and selenium (Se) on blood concentrations of these minerals, blood metabolic profiles, nutrient intake and milk yield and composition. Nineteen Holstein cows were selected and randomly assigned to two groups for receiving organic (n = 9) or inorganic (n = 10) sources of Zn, Cu and Se from 60 days before the expected date of calving to 80 days of lactation. Samples of feed, orts and milk were collected for analysis. Body condition score (BCS) was determined and blood samples were collected for analysis of Zn, Cu and Se concentrations, as well as for metabolic profile. Supplying organic or inorganic sources of Zn, Cu, and Se did not affect dry matter and nutrient intake, blood metabolic profile, milk yield and composition, plasma concentration of these minerals, and BCS or change the BCS in cows from 60 days before the expected date of calving to 80 days of lactation. An effect of time was observed on all feed intake variables, plasma concentrations of Zn and Se, milk yield, milk protein content, BCS and change in BCS.
Resumo:
O objetivo nesta pesquisa foi avaliar o efeito de dois ingredientes protéicos da dieta (farelo de soja e de algodão) e de dois processamentos físicos do concentrado (farelado e extrusado) na terminação de 16 bovinos machos não-castrados da raça Canchim. Avaliaram-se ainda a excreção de nutrientes nos dejetos e o potencial de produção de biogás. Os animais tinham 12 meses de idade e 315 kg PC, em média, e foram confinados em baias individuais durante 147 dias (os primeiros 35 dias foram de adaptação). Como volumoso utilizou-se silagem de milho, em uma relação volumoso:concentrado de 50:50, com base na MS. Os resultados foram analisados em delineamento inteiramente casualizado, em esquema fatorial 2 × 2 (fonte protéica × processamento físico). A fonte protéica influenciou o ganho de peso corporal (1,50 e 1,35 kg/dia para o farelo de soja e de algodão, respectivamente), a conversão alimentar (4,73 e 5,31 kg MS ingerida/kg de ganho de peso, respectivamente) e a eficiência protéica (1,78 e 1,59 kg de ganho de peso/kg PB ingerida, respectivamente). O tratamento físico do concentrado e a fonte protéica não influenciaram a ingestão de MS, a área de olho-de-lombo e a espessura de gordura, estimadas por ultra-som. O balanço de nutrientes foi semelhante entre tratamentos para MS, FDN e FDA, mas a fonte protéica determinou diferenças no balanço de PB. Entre os macro e microminerais quantificados nas fezes, os teores de P e Mg diferiram entre as fontes protéicas e a extrusão aumentou o conteúdo de Ca, com médias de 0,39 e 0,43 g/100 g de MS de dejetos, respectivamente, para os concentrados farelado e extrusado. Os dejetos produziram biogás de maneira efetiva entre o 70º e o 200º dia.
Resumo:
An experiment was carried out to evaluate the performance of piglets fed rations containing fermented milk and zinc and copper amino acid complex. Sixty four piglets, littermates, were used. The experimental design was based on random block with two dietary treatments. One of these contained a basal diet (DB) with ZnO e CuSO 4 and the other one with the DB, but without CuSO 4 and with the addition of fermented milk and zinc and copper amino acid complex (SLF Lact +ZnCuAA). There were eight replicate pens per treatment, and pigs were grouped at 4 per pen. The SLF Lact + ZnCuAA didn't not affect (p>0.05) final live weight of the piglets. However, live weight was different (p<0.01) between males and females (24.3 vs. 24.0 kg) at end of experiment. The feed intake of animals feed with SLF Lact+ZnCuAA was higher (p<0.01) in 8% in the first 14 days (0.261 vs. 0.239 kg/d), 15% from 15 to 28 days (0.756 vs. 0.675 kg/ d) and 12% from 29 to 42 days (1.091 vs. 0.962 kg/ d) compared to control group. Daily average feed intake in the experimental period was 11% higher (p<0.01) for the animals fed with the diet contained SLF Lact+ZnCuAA. Weight gain of the treatment with SLFL act+ZnCuAA was higher (p<0.01) by 14% from 0 to 14 days (0.176 vs. 0.152 kg/d), 11% from 15 to 28 days (0.564 vs. 0.500 kg/d) and 12% from 29 to 42 days (0,572 vs. 0,501 kg/d). Average daily weight gain of 42 days of trial of treatment with SLF Lact +ZnCuAA was 12% higher (p<0.01) compared to control group (0.437 vs. 0.384 kg/d). Feed conversion ratio was 8% lower (p<0.01) for treatment with SLF Lact+ZnCuAA in the first 14 days (1.487 vs. 1.614). Supplementation with fermented milk and zinc and copper amino acid complex in diets containing zinc oxide improved growth performance of weanling piglets.
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
Pós-graduação em Medicina Veterinária - FMVZ
Resumo:
Pós-graduação em Zootecnia - FMVZ
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)