Navegando por Autor "Otsuk, Ivani Pozar"

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    Caracterização de oito raças do bicho-da-seda (Bombyx mori L.)
    (2004) Porto, Antonio José; Okamoto, Fumiko; Cunha, Eduardo Antonio da; Otsuk, Ivani Pozar
    The experiment was developed at Estação Experimental de Zootecnia de Galia - Instituto de Zootecnia, SAA-SP, Gália city, São Paulo, Brazil, on 2000. Eight silkworm races of Japanese and Chinese origin were studied (B101, B102, B104, B109, C201, C202, C203, C208) for biological characters ( Total weight-gain for one caterpillar-GP, Percentage of mortality-MO, Number of male-NM, Number of female-NF, Number of egg/laying-OP and Percentage of eclodibility-EC) and for characters of cocoon production (silk gland unitary weight-GS, 30 cocoon shell weight-CS, 30 chrysalis weight-PC, silk net purport -TS, disqualified cocoon-CD, cocoon length-CC and cocoon breadth -LC). It was used a completely randomized design, with four replications/ race. It was not detected variation among races for GP, MO, NF and OP. The B101 race showed a smaller NM and a smaller EC. With regard to cocoon production, the C202 race showed the best result, with good GS (38% of the final weight of the caterpillar), one of highest CS and TS and values next to the average for PC, CD, CC e LC. The C201 race, with regard to cocoon produced, showed the worst results. O experimento foi conduzido na Estação Experimental de Zootecnia de Gália, do Instituto de Zootecnia, SAA-SP, no ano de 2000. Oito raças de bicho-da-seda, de origem Japonesa e Chinesa foram estudadas (B101, B102, B104, B109, C201, C202, C203, C208) em relação a caracteres biológicos (Ganho de peso total de uma lagarta-GP, Porcentagem de mortalidade-MO, Número de machos-NM, Número de fêmeas-NF, Número de ovos/postura-OP e Porcentagem de eclosão-EC) e caracteres de produção de casulo (Peso unitário da glândula sericígena-GS, Peso de 30 cascas séricas-CS, Peso de 30 crisálidas-PC, Teor de seda líquido-TS, Casulos desclassificados-CD, Comprimento do casulo-CC e Largura do casulo-LC). O delineamento experimental foi o inteiramente casualizado, com quatro repetições/raça. Não houve variação entre as raças para GP, MO, NF e OP. A raça B101 apresentou, no geral, um menor NM e uma menor EC. Quanto à produção de casulos, no geral, os melhores resultados foram apresentados pela raça C202, com um bom GS (38% do peso final da lagarta), um dos mais altos CS e TS e valores próximos da média para PC, CD, CC e LC. A raça C201, em relação ao casulo produzido, apresentou os piores resultados.
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    Carcass traits and short-chain fatty acid profile in cecal digesta of piglets fed alfalfa hay and fructooligosaccharides
    (2017) Rodrigues, Daniela Junqueira; Budiño, Fábio Enrique Lemos; Prezzi, Joel Alberto; Monferdini, Renato Pacheco; Otsuk, Ivani Pozar; Moraes, José Evandro de
    ABSTRACT The objective of this study was to evaluate the effects of the addition of the prebiotic fructooligosaccharide and/or alfalfa hay to piglet diets on carcass traits and short-chain fatty acid profiles in the cecal digesta. Seventy-two commercial crossbred piglets of both sexes, with an average initial weight about 6 kg and age of approximately 21 days, were distributed in a randomized block design, using a factorial scheme, which consisted of three alfalfa hay levels (0, 5, and 10%) and two fructooligosaccharide levels (0 and 0.3%). Fiber addition in the presence of the prebiotic exerted an effect on cecal digesta short-chain fatty acid, increasing the acetic and reducing the butyric acid concentrations. The meat quality was also affected by the treatments, water activity, water-holding capacity of meat, and especially the reduction of fat content and the increase of moisture. The treatments did not affect the pH and the ammonia content in the cecal digesta. Most carcass traits were not affected by the treatments, except for carcass weight and backfat thickness in points 1 and 2, that decreased with the inclusions of fiber and prebiotic. The addition of 5% alfalfa hay improves carcass and meat traits in growing pigs without any change in carcass weight, demonstrating the advantage of using this ingredient to obtain a healthy final product to the customers.
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    Organic cherry tomato yield and quality as affect by intercropping green manure
    (2018) Ambrosano, Edmilson José; Salgado, Gabriela Cristina; Otsuk, Ivani Pozar; Patri, Patrícia; Henrique, Celina Maria; Melo, Paulo César Tavares de
    ABSTRACT. The aim of the study was to determine the yield and quality parameters of organic cherry tomatoes cultivated by intercropping with green manure in two successive years. The experimental design was a randomized block with eight treatments and five replicates as follows: two controls with single cherry tomato crop, one with straw addition and the other without corn straw as a cover crop; cherry tomato intercropped with jack bean (Canavalia ensiformis DC); tomato intercropped with white lupine (Lupinus albus L.); tomato intercropped with sun hemp (Crotalaria juncea L.); tomato intercropped with velvet bean-dwarf [Mucuna deeringiana (Bort) Merrill]; tomato intercropped with mung bean [Vigna radiata (L.) Wilczek]; and tomato intercropped with cowpea [Vigna unguiculata (L.) Walp.]. All the treatments with green manure received corn straw as mulch. The treatment group with cowpea had a lower number and weight of commercial fruits compared to the velvet bean-dwarf and jack bean treatments. The number and weight of the commercial fruits were lower in the second year. The fruits in the first year exhibited a higher average weight, a lower nutrient content and a lower soluble solids total TSS/AT ratio than the second year fruits. Green manures did not negatively affect the quality or nutrient content of the tomato fruit. RESUMO. O objetivo do trabalho foi determinar parâmetros produtivos e de qualidade do minitomate orgânico cultivado em consócio com os adubos verdes em dois anos sucessivos. O delineamento experimental utilizado foi de blocos casualizados com oito tratamentos e cinco repetições, sendo os tratamentos: duas testemunhas com minitomate solteiro, sendo uma com palha e outra sem palha de milho em cobertura, minitomate intercalar com feijão-de-porco (Canavalia ensiformis DC), minitomate intercalar com Crotalária-júncea (Crotalaria juncea L.), minitomate intercalar com mucuna-anã [Mucuna deeringiana (Bort) Merrill], minitomate intercalar com feijão-mungo [Vigna radiata (L.) Wilczek], minitomate intercalar com tremoço-branco (Lupinus albus L.), minitomate intercalar com feijão-caupi [Vigna unguiculata (L.) Walp.], sendo que todos os tratamentos com adubo verde intercalar receberam em cobertura a palha de milho. O tratamento com feijão-caupi teve menor número e peso de frutos comerciais comparados com os tratamentos mucuna-anã e feijão-de-porco, respectivamente. O número e peso dos frutos comerciais foram menores no segundo ano. Os frutos no primeiro ano apresentaram maior peso médio, menor teor de nutriente e menor relação solido solúveis totais SST/ATT acidez titulável total do que no segundo ano. Os adubos verdes não afetaram negativamente a qualidade nem os teores de nutrientes do fruto do minitomate.