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-The objective of this study was the evaluation of egg quality of 30 to 45-week-old brown layers, raised in cages or on floor, supplemented with amino acids, using the ideal protein concept with levels of 14, 15, 16, and 18% crude protein. A total of 400 birds (Hy-sex Brown) were used, distributed into two breeding systems (conventional cage or floor). The evaluated variables were the yolk relative weight, yolk height, albumen relative weight, albumen height, specific gravity, eggshell thickness, and eggshell weight. Treatments consisted of reduced levels of crude protein and were provided to both groups equally. We adopted a completely randomized design, in a factorial scheme, composed of two breeding systems and four levels of crude protein, totaling eight treatments. Five replicates per treatment and 10 birds per experimental unit were used. The breeding system on floor was configured as an option in the breeding of brown layers, of Hy-sex Brown commercial lineage, in the period between the 30th and the 45th week of age, since it presents results equivalent to the ones obtained in the breeding system in cages, having the egg quality as parameter. The system of production on floor is configured as an option in the farming of brown layers, of the commercial lineage Hy-sex Brown.Key Words: brown layer, cage, egg, floor Revista Brasileira de Zootecnia

The objective of this study was to evaluate the inclusion of feather and blood meal (FBM) in broiler pre-starter and starter diets according to the processing method used. Performance, digestibility, and intestinal morphometry of broilers fed diets containing FBM were evaluated in two experiments, in the pre-starter (1-7 d) and starter (8-21 d) phases in a randomized block design with four treatments and five replicates of 12 birds, totaling 20 experimental units per trial. The criteria used for block formation was the battery floor. The meal was processed under different degrees of hydrolysis pressure (2.0 kgf/cm 2 for 40 min; 2.5 kgf/cm 2 for 30 min; and 3.0 kgf/cm 2 for 20 min) and added at 9% to the pre-starter (Experiment I) and starter (Experiment II) diets. In each experiment, 480 male Cobb 500 ® chicks were allocated to batteries. The following variables were measured: live weight, weight gain, feed intake, feed conversion ratio, and digestibility and retention of dry matter, nitrogen, and ether extract. Performance was not influenced by the dietary inclusion of the ingredient. However, FBM subjected to the highest hydrolysis pressure resulted in the worst overall nutritional balances. The chickens were more susceptible to FBM processing in the prestarter phase, when the hydrolysis pressure of 2.5 kgf/m 2 for 30 min provided the best results. In the starter diet, FBM processed at a hydrolysis pressure of 2.0 kgf/m 2 for 40 min provided the best performance results up to 14 days of age, without changing nutrient metabolism. Up to 9% feather and blood meal can be included in broiler prestarter and starter diets as long as the ingredient processing method is well-known.

ResumoA utilização de biotecnologias reprodutivas representa cada vez mais a evolução da produção animal no Brasil e no mundo. A Inseminação Artificial em bovinos veio como a pioneira dessa evolução, seguida pela Transferência de Embriões (TE) convencional que trouxe a Aspiração Folicular guiada por ultra-sonografia para produção in vitro de embriões bovinos, possibilitando o incremento da genética dos rebanhos, em quantidade e qualidade.Objetivou-se descrever os aspectos relacionados a um programa de transferência de embriões, relatando que em posição de destaque encontram-se as receptoras responsáveis pela gestação de animais de genética superior. O programa de Aspiração Folicular veio como a evolução da TE convencional, tornando os processos mais práticos, viáveis e eficientes, porém não se deve esquecer que os envolvidos nos processos devem possuir experiência e habilidade profissional, pois eles são

ResumoA pecuária de corte no Brasil é hoje um dos ramos da agropecuária de grande expressão na economia. O Brasil possui um rebanho bovino de aproximadamente 200 milhões de cabeças. Isto faz com que ocorra uma necessidade de um marketing bem planejado para que se tenha o maior domínio possível do mercado mundial da carne. Na pecuária de elite, em um nível de acesso menor, também faz-se uso do marketing, é esse o responsável por divulgar os avanços no melhoramento genético, posteriormente aplicado ao rebanho comercial melhorando sua qualidade. É conhecendo as formas e as etapas do marketing que se pode aplicá-lo de forma eficiente, sendo esse dividido em dois, o marketing estratégico (a longo prazo) e o operacional (curto prazo). Essas estratégias possuem quatro fundamentos, análise, adaptação, ativação e avaliação. Conhecendo o marketing brasileiro é preciso avaliar o mercado do país que é bastante promissor devido a uma melhora na renda dos brasileiros. Isto mostra que a

ResumoA ovinocultura de corte é uma atividade que vem crescendo e se desenvolvendo muito nos últimos anos no Brasil, principalmente em regiões onde antes esta atividade era insignificante, tornando-se mais uma alternativa de investimento no meio agropecuário. O aumento da demanda por carne ovina pôs em evidência a importância do conhecimento da fisiologia reprodutiva desses animais para que possa ser empregado metodos para melhor os seus indices reprodutivos. No presente trabalho, objetivou-se abordar de forma prática e simplificada sobre a fisiologia da reprodução ovina. A fêmea ovina atinge a puberdade quando ocorre o aparecimento do primeiro estro e, o macho, quando ocorre o aparecimento de instintos reprodutivos. Os ovinos são poliéstricos estacionais e seu ciclo reprodutivo tem em torno de 17 dias, sendo dividido em proestro, estro, metaestro e diestro. O período médio de gestação é de 150 dias, com um intervalo aproximado de oito meses entre os partos. A produção de ovinos

An experiment was conducted aiming to evaluate the effect of different levels of crude protein, based on the ideal protein concept and two rearing systems, on productive performance of brown laying hens. A total of 400 Hisex Brown laying hens between 30 and 45 weeks of age were distributed in a completely randomized design and a 2×4 factorial arrangement, with main effects including two rearing systems (cage and floor) and levels of crude protein (140, 150, 160, and 180 g kg −1), totalizing eight treatments. Five replicates with 10 birds each were used per experimental unit. The following parameters were evaluated: egg production, feed intake, body weight gain, feed conversion ratio, and quality traits such as dirty, cracked, or broken eggs. No interaction effect was observed between dietary protein levels and rearing systems for body weight gain, feed intake, egg production, egg weight, and feed conversion ratio. Feed intake and egg production were higher in the floor rearing system. Feed conversion ratio (kg/dz) was improved in birds reared in the cage system. The rate of cracked and broken eggs was higher in the cage system. The layers reared in the floor system produced a higher percentage of dirty eggs. The dietary protein level did not affect the evaluated parameters. Thus, we conclude that a floor rearing system is an option for layers, and the dietary protein level can be reduced up to 140 g kg −1 for Hisex Brown hens from 30 to 45 weeks of age.

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