Kirjahaku

L'acide phytique ou phytate est un constituant antinutritionnel des aliments d'origine v g tale, qui forme une grande vari t de sels insolubles avec des min raux tels que le phosphore, le calcium, le zinc, le magn sium et le cuivre. L'acide phytique est galement connu pour former des complexes avec les prot ines et les enzymes prot olytiques (pepsine et trypsine). En raison de l'absence d'enzyme phytase endog ne, qui hydrolyse l'acide phytique, le phosphore, le calcium, les prot ines et d'autres nutriments li s sont biologiquement moins disponibles pour la volaille. La phytase microbienne a une grande importance nutritionnelle et cologique. Les r gimes alimentaires pour volailles suppl ment s en phytase microbienne am liorent les performances de croissance et augmentent la digestibilit et la disponibilit des phosphores, du calcium, du zinc et du cuivre li s au phytate. Il a galement t d montr que la suppl mentation en phytase microbienne augmentait la digestibilit il ale des prot ines brutes et des acides amin s. L'efficacit de la phytase microbienne suppl mentaire d pend de son taux d'inclusion, du rapport entre le calcium et le phosphore alimentaires, de la vitamine D3, de la nature du r gime alimentaire, de l' ge et du g notype des oiseaux. La phytase microbienne est donc un outil efficace pour exploiter le potentiel nutritionnel inh rent des aliments pour animaux en vue d'une production avicole conomique et respectueuse de l'environnement.

L'acido fitico o fitato un componente antinutrizionale dei mangimi di origine vegetale, che forma un'ampia variet di sali insolubili con minerali come fosforo, calcio, zinco, magnesio e rame. L'acido fitico anche noto per formare complessi con le proteine e gli enzimi proteolitici (pepsina e tripsina). A causa della mancanza dell'enzima fitasi endogeno, che idrolizza l'acido fitico, fosforo, calcio, proteine e altri nutrienti legati sono biologicamente meno disponibili per il pollame. La fitasi microbica ha una grande importanza nutrizionale ed ecologica. Le diete per pollame integrate con fitasi microbica migliorano le prestazioni di crescita e aumentano la digeribilit e la disponibilit di fosfori, calcio, zinco e rame legati ai fitati. stato inoltre dimostrato che l'integrazione di fitasi microbica aumenta la digeribilit ileale di proteine grezze e aminoacidi. L'efficacia dell'integrazione di fitasi microbica dipende dal tasso di inclusione, dal rapporto calcio e fosforo nella dieta, dalla vitamina D3, dalla natura della dieta, dall'et e dal genotipo dei volatili. Pertanto, la fitasi microbica uno strumento efficace per sfruttare il potenziale nutrizionale intrinseco dei mangimi per una produzione avicola economica ed ecologica.

O cido f tico ou fitato um constituinte anti-nutricional dos alimentos derivados de plantas, que forma uma grande variedade de sais insol veis com minerais como o f sforo, o c lcio, o zinco, o magn sio e o cobre. Sabe-se tamb m que o cido f tico forma complexos com prote nas e enzimas proteol ticas (pepsina e tripsina). Devido falta de enzima fitase end gena, que hidrolisa o cido f tico, o f sforo, o c lcio, as prote nas e outros nutrientes ligados s o biologicamente menos dispon veis para as aves de capoeira. A fitase microbiana tem grande significado nutricional e import ncia ecol gica. As dietas para aves de capoeira suplementadas com fitase microbiana resultam num melhor desempenho em termos de crescimento e num aumento da digestibilidade e da disponibilidade de f sforo, c lcio, zinco e cobre ligados ao fitato. A suplementa o com fitase microbiana tamb m demonstrou aumentar a digestibilidade ileal da prote na bruta e dos amino cidos. A efic cia da fitase microbiana suplementar depende da sua taxa de inclus o, do r cio de c lcio e f sforo na dieta, da vitamina D3, da natureza da dieta e da idade e gen tipo das aves. Assim, a fitase microbiana uma ferramenta eficiente para explorar o potencial nutricional inerente dos alimentos para animais para a produ o econ mica e ecol gica de aves de capoeira.

Phytins ure oder Phytat ist ein n hrstofffeindlicher Bestandteil von pflanzlichen Futtermitteln, der mit Mineralien wie Phosphor, Kalzium, Zink, Magnesium und Kupfer eine Vielzahl von unl slichen Salzen bildet. Phytins ure ist auch daf r bekannt, dass sie mit Proteinen und proteolytischen Enzymen (Pepsin und Trypsin) Komplexe bildet. Aufgrund des Mangels an endogenen Phytase-Enzymen, die Phytins ure hydrolysieren, sind Phosphor, Kalzium, Eiwei und andere gebundene N hrstoffe f r Gefl gel biologisch weniger verf gbar. Mikrobielle Phytase ist ern hrungsphysiologisch und kologisch von gro er Bedeutung. Mit mikrobieller Phytase angereichertes Gefl gelfutter f hrt zu einer verbesserten Wachstumsleistung und erh ht die Verdaulichkeit und Verf gbarkeit von phytatgebundenem Phosphor, Kalzium, Zink und Kupfer. Eine Erg nzung mit mikrobieller Phytase erh ht nachweislich auch die ileale Verdaulichkeit von Rohprotein und Aminos uren. Die Wirksamkeit der mikrobiellen Phytase h ngt von der Menge der zugef hrten Phytase, dem Kalzium- und Phosphorverh ltnis im Futter, dem Vitamin D3, der Art des Futters sowie dem Alter und Genotyp der Tiere ab. Somit ist mikrobielle Phytase ein effizientes Mittel, um das ern hrungsphysiologische Potenzial von Futtermitteln f r eine wirtschaftliche und umweltfreundliche Gefl gelproduktion auszusch pfen.

Forage refers to plant species that are either directly or indirectly consumed by animals. This book encompasses all theoretical and practical aspects of the conservation and utilization of forages as silage, hay, and haylage. It serves as a comprehensive resource for anyone seeking information on this topic.

The book Glossary of Library and Information Science is designed as a hypertext reference resource for library and information science professionals, university students and faculty and users of all types of libraries. The primary criterion for inclusion is whether a librarian or other information professional might reasonably be expected to know the meaning of the term in the context of his/her works.

Library and information technology as a paper is being taught at B.L.I.Sc., and M.L.I.Sc., at various universities and institutions. This book is designed as an introductory text encompassing vital information on all pertinent aspects. The major topics dealt in this book are: Introduction to Information Technology; Library Survival in the Face of Change; Technology Across the Curriculum; Computer Architecture

Based on new research and years of practical experience, this book presents the basic knowledge necessary to become a professional indexer. Synthesizing the thinking and experience of indexers and abstractors over the years, the book introduces readers to such fundamentals as: indexing and abstracting: an introduction, indexing language, art of indexing, bibliography display, etc. Each of the six chapters discusses the topic of indexing and abstracting with a different emphasis.

Students will investigate the range of evaluative methods used in library and information science to assess institutional, system and service performance. Value issues and external validity issues will be highlighted during this review. Emphasis throughout the book will be on the impact of systems and services to end-users.

Forage refers to plant species that are either directly or indirectly consumed by animals. This book provides comprehensive information on the theoretical and practical aspects of conserving and utilizing forages, including their use as silage, hay, and haylage.