RESUMO
An experiment was conducted to evaluate the effects of broken rice inclusion as substitute for corn in the diet on the performance, carcass yield, and economic viability of meat-type quails between 7 and 49 days of age. A number of 288 quails was distributed according to a completely randomized design into six treatments with six replicates of eight birds each. Treatments consisted of increasing levels of broken rice (0, 20, 40, 60, 80 and 100%) in replacement of corn. Increasing levels of corn substitution by broken rice in the diet of 7- to 49-day-old meat-type quails did not affect feed intake, weight gain or feed conversion ratio (p>0.05). Relative to carcass traits, the inclusion of broken rice in the diets did not influence (p>0.05) dressing percentage or breast, leg (thigh+drumstick), liver, and gizzard yields. Moreover, feed cost per kilogram of live weight gain, cost index, and economic efficiency index were not influenced by the replacement of corn by broken rice in the diets. The performance, carcass traits and economic viability of broilers fed the different levels of broken rice inclusion were not different from the control group (p>0.05). These results indicate the economic viability of total replacement of corn by broken rice in the feeding of meat-type quails.(AU)
Assuntos
Animais , Carne , Coturnix/metabolismo , Ração Animal/análise , Ração Animal/normas , Oryza , Zea maysRESUMO
An experiment was conducted to evaluate the effects of broken rice inclusion as substitute for corn in the diet on the performance, carcass yield, and economic viability of meat-type quails between 7 and 49 days of age. A number of 288 quails was distributed according to a completely randomized design into six treatments with six replicates of eight birds each. Treatments consisted of increasing levels of broken rice (0, 20, 40, 60, 80 and 100%) in replacement of corn. Increasing levels of corn substitution by broken rice in the diet of 7- to 49-day-old meat-type quails did not affect feed intake, weight gain or feed conversion ratio (p>0.05). Relative to carcass traits, the inclusion of broken rice in the diets did not influence (p>0.05) dressing percentage or breast, leg (thigh+drumstick), liver, and gizzard yields. Moreover, feed cost per kilogram of live weight gain, cost index, and economic efficiency index were not influenced by the replacement of corn by broken rice in the diets. The performance, carcass traits and economic viability of broilers fed the different levels of broken rice inclusion were not different from the control group (p>0.05). These results indicate the economic viability of total replacement of corn by broken rice in the feeding of meat-type quails.
Assuntos
Animais , Carne , Coturnix/metabolismo , Ração Animal/análise , Ração Animal/normas , Oryza , Zea maysRESUMO
A abordagem proteômica permite identificar componentes proteicos, celulares e secreções. Desta forma, constitui uma ferramenta viável para o estudo das potenciais funções de proteínas e para a busca por marcadores proteicos de fenótipos específicos e/ou processos fisiológicos. Este trabalho teve por objetivo fazer uma revisão sobre esse tema e sua importância na biotecnologia do sêmen de machos domésticos. A composição da membrana espermática e do plasma seminal é de grande interesse, em virtude da sua influência nos eventos de fusão oócito-espermatozoide, fertilização e subsequente desenvolvimento embrionário. Diversos trabalhos vêm demonstrando o potencial da proteômica ligada à reprodução animal, a qual auxilia na identificação de marcadores de fertilidade ou de ejaculados aptos à congelação.(AU)
The proteomic approach allows the identification of proteins from tissues, cells and secretion. Thus, this tool is useful for the study of potential protein functions and search for markers of specific phenotypes and/or physiological events. This study aimed to review on the subject and its importance in semen biotechnology of several species. The composition of the sperm membrane and seminal plasma is of great interest because of its influence on sperm-oocyte fusion, fertilization and subsequent embryonic development. Several studies have demonstrated the potential of proteomics related to animal breeding, assisting in identifying markers for fertility or able to ejaculate process of freezing / thawing in males of several species.(AU)
Assuntos
Animais , Masculino , Fertilidade/fisiologia , Proteômica/educação , ReproduçãoRESUMO
A abordagem proteômica permite identificar componentes proteicos, celulares e secreções. Desta forma, constitui uma ferramenta viável para o estudo das potenciais funções de proteínas e para a busca por marcadores proteicos de fenótipos específicos e/ou processos fisiológicos. Este trabalho teve por objetivo fazer uma revisão sobre esse tema e sua importância na biotecnologia do sêmen de machos domésticos. A composição da membrana espermática e do plasma seminal é de grande interesse, em virtude da sua influência nos eventos de fusão oócito-espermatozoide, fertilização e subsequente desenvolvimento embrionário. Diversos trabalhos vêm demonstrando o potencial da proteômica ligada à reprodução animal, a qual auxilia na identificação de marcadores de fertilidade ou de ejaculados aptos à congelação.
The proteomic approach allows the identification of proteins from tissues, cells and secretion. Thus, this tool is useful for the study of potential protein functions and search for markers of specific phenotypes and/or physiological events. This study aimed to review on the subject and its importance in semen biotechnology of several species. The composition of the sperm membrane and seminal plasma is of great interest because of its influence on sperm-oocyte fusion, fertilization and subsequent embryonic development. Several studies have demonstrated the potential of proteomics related to animal breeding, assisting in identifying markers for fertility or able to ejaculate process of freezing / thawing in males of several species.