Feeding plans with the use of glycerin for broilers

This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p <0.05) of the dietary plans on litter moisture and plantar lesions. Effects were observed (p>0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively.This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p <0.05) of the dietary plans on litter moisture and plantar lesions. Effects were observed (p>0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively

Trajetórias da Educomunicação nas Políticas Públicas e a Formação de seus Profissionais

Esta obra é composta com os trabalhos apresentados no primeiro subtema, TRAJETÓRIA – Educação para a Comunicação como Política pública, nas perspectivas da Educomunicação e da Mídia-Educação, do II Congresso Internacional de Comunicação e Educação. Os artigos pretendem propiciar trocas de informações e produzir reflexões com os leitores sobre os caminhos percorridos, e ainda a percorrer, tendo como meta a expansão e a legitimação das práticas educomunicativas e/ou mídia-educativas como política pública para o atendimento à formação de crianças, adolescentes, jovens e adultos, no Brasil e no mundo

Avaliação macro e microscópica do trato digestório de frangos de corte alimentados com dieta contendo glicerina

This study aimed to evaluate the presence of morphological changes in the digestive tract of broilers fed diets containing 7% glycerol. It was used 16 animals from male Cobb 500® line, distributed in a completely randomized design in two treatments: animals fed diet without glycerin and animals fed diets containing 7% glycerol. It was observed that the addition of glycerin at 7% in the diet of broilers promotes the occurrence of significant inflammatory infiltrates in the proventriculus, caecum and colon of such animals, macroscopically the addition of glycerin in the diet did not cause any significant difference, but these differences had no significant effect on zootechnical development of such animals. It is possible to conclude that the use of glycerin in the diet can cause localized inflammatory processes, due to its alcoholic feature that degrades the protective mucus barrier and it presents passive absorption and exposes the mucus epithelium to the gastric juice action, thus promoting the mucosa inflammatory process. In the large intestine (cecum and colon) the inflammatory response showed greater intensity as a function of these organs have higher lymphatic tissue (nodular and diffuse)concentration and at this portion the intestine performs the fluids reabsorption directly competing with glycerin which is highly hygroscopic.Avaliou-se a presença de alterações morfológicas no tubo digestório de frangos de corte alimentados com dieta contendo 7% de glicerina. Utilizou-se 16 animais, machos, da linhagem Cobb 500®, distribuídos em delineamento inteiramente casualizado divido em dois tratamentos: animais alimentados com dieta sem glicerina e alimentados com dieta contendo 7% de glicerina. Foi observado que a adição de glicerina a 7% na dieta de frangos de corte leva a ocorrência significativa de infiltrados inflamatório no pro ventrículo, nos cecos e no cólon desses animais, macroscopicamente a adição de glicerina na dieta não ocasionou nenhuma diferença estatística, contudo essas alterações não ocasionaram diferença significativa no desempenho zootécnico desses animais. Conclui-se que o uso da glicerina na dieta pode ocasionar processos inflamatórios localizados, em função de sua característica alcoólica que degrada a barreira muco protetora e possui absorção passiva e expõe o epitélio mucótico a ação do suco gástrico, favorecendo assim o processo inflamatório da mucosa. No intestino grosso (cecos e cólon) a resposta inflamatória apresentou maior intensidade em função desses órgãos possuírem maior concentração de tecido linfático (nodular e difuso) e nesta porção o intestino realiza a reabsorção de líquidos competindo diretamente com a glicerina que é altamente higroscópica

Feeding plans with the use of glycerin for broilers

This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p 0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively

Cottonseed oil in diets for growing broilers

ABSTRACT The objective of this study was to evaluate the effect of three levels of crude cottonseed oil on performance, organ weights, and blood parameters of growing broilers. Carcass and cut yields after 33 and 42 days of age and the economic viability of the diets were also evaluated. Male broilers of the Ross line were distributed in a completely randomized design, in a 4 × 2 factorial arrangement (0, 2, 4, and 6% inclusion of cottonseed oil, with and without ferrous sulfate) with five replicates. In the period from 22 to 33 days, quadratic and increasing linear effects were observed on feed intake and weight gain, respectively. Feed conversion during the same period was better with the addition of ferrous sulfate. The addition of ferrous sulfate caused a reduction in heart weight. From 22 to 42 days, carcass and cuts yield, organ weight, and intestine length were not influenced by the levels of oil or by the addition of ferrous sulfate. Supplementation with iron salts provided a lower red blood cell count and increased mean cell volume. Balanced diets formulated with up to 6% of crude cottonseed oil for broilers from 22-33 and 22-42 days of age do not affect their performance or the weight of their organs. Supplementation with ferrous sulfate improved feed conversion up to 33 days. Diets formulated with 4% cottonseed oil supplemented with ferrous sulfate are economically viable in the period from 22 to 42 days