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Factors that Affect Pellet Quality： A Review

Journal of Agricultural Science and Technology(A) 2015年第9期5卷 717-722页

作者： keysuke muramatsu Andreia Massuquetto Fabiano Dahlke Alex Maiorka Department of Animal Production Faculty of Veterinary and Animal Science Universidade Federal do Parana Curitiba80035-050 Brazil Department of Animal Production Faculty of Agronomy and Animal Science Universidade Federal de Santa CatarinaFlorianopolis 88040-900 Brazil

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Effect of Thermal Processing, Press Throughput and Roller-Die Gap on Physicochemical Properties of Broiler Feed Pellets

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Journal of Agricultural Science and Technology(A) 2016年第2期6卷 98-107页

作者： keysuke muramatsu Isabel Cristina Mores Vaccari Cibele Silva Minafra Rafael Femando Sens FabianoDahlke Alex Maiorka DSM Nutritional Products Av. Eng. Billings 1729 Sao Paulo 05321-010 Brazil Instituto Federal Goiano Rio Verde Goias 75901-970 Brazil BRF-Rodovia BR 277 3001 Mossungue Curitiba 82305-100 Brazil Universidade Federal de Santa Catarina (UFSC) Rod. Admar Gonzaga 1346 Florianopolis 88034-000 Brazil Universidade Federal do Parana Rua dos Funcionarios 1540 Curitiba 80035-050 Brazil

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Impact of Particle Size, Thermal Processing, Fat Inclusion and Moisture Addition on Pellet Quality and Protein Solubility of Broiler Feeds

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Journal of Agricultural Science and Technology(A) 2013年第12期3卷 1017-1028页

作者： keysuke muramatsu Alex Maiorka Isabel Cristina Mores Vaccari Renata Nuernberg Reis Fabiano Dahlke Adelar Almeida Pinto Uislei Antonio Dias Orlando Marcelo Bueno Momca Imagawa Department of Animal Production Faculty of Veterinary and Animal Science Universidade Federal do Parana Curitiba80035-050 Brazil Department of Animal Production Faculty of Animal Sciences lnstituto Federal Goiano Rio Verde 75901-970 Brazil Animal Science Researchers Curitiba 82305-100 Brazil Department of Animal Production Faculty of Agronomy and Animal Science Universidade Federal Santa CatarinaFlorian6polis 88034-000 Brazil

The present study evaluated the effect of feed particle size, thermal processing, several levels of fat inclusion and moisture addition on pellet quality and protein solubility in potassium hydroxide (KOH) in a corn, soybean meal and animal by products based broiler diets. The different processing factors were combined in a 2 ? 4 ? 4 ? 2 factorial arrangement in an eight randomized block consisting of eight production series: two particle sizes (coarse: 1,041 microns and medium: 743 microns), four fat inclusion levels at the mixer (15, 25, 35 and 45 g/kg of feed), four moisture addition levels in the conditioner (0, 7, 14 and 21 g/kg of feed) and two thermal processing treatments (conditioner-pellet press treatment or conditioner-expander-pellet treatment) which resulted in 64 different processed feeds. For the determination of the pellet durability index (PDI), the amount of intact pellets and protein solubility determinations, eight feed samples (replicates) were collected for each treatment. The data were transformed using a variation of Box-Cox transformation in order to fit a normal distribution (p > 0.05). Adding moisture up to 21 g/kg of feed in the conditioner improved pellet quality of the diets (p < 0.05). Expansion of diets before pelleting improved (p < 0.05) PDI and amount of intact pellets by 26% and 31%, respectively, as compared to a simple conditioning-pelleting feed processing. Expander treatment (at 110 °C) decreased (p < 0.05) protein solubility in KOH from 686 g/kg to 643 g/kg total protein as compared to pelleting process (at 80-82 °C). The amount of intact pellets reduced from 773 g/kg to 746 g/kg of feed (p < 0.05) as particle size increased from medium to coarse grinding. Pellet quality was significantly reduced with fat inclusion levels higher than 35 g/kg of diet.

关键词：蛋白质溶解度热加工处理肉鸡饲料包容性水分粒度球团质量脂肪

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