ABSTRACT. The goat's milk is an excellent choice to replace cow’s milk for children and adults, who are allergic to cow’s milk. Both the proteins and the fat portion of goat’s milk are absorbed by the body faster than cow's milk. Visually it is not possible to differentiate cow’s milk from goat’s milk, which can be differentiated through odor and taste which generates some concern to consumers. The objective of this study were to evaluate the acceptability of goat’s milk, compared to cow’s milk by children and young adults between 06 and 21 years old, in public network of schools Bambuí-MG, living in different socioeconomic levels, in order to verify if there is difference, in acceptance, between these two types of milk and study if the age and socioeconomic status could influence the results. Samples were prepared with chocolate powder and subjected to sensory evaluation by a group of 330 students, who are milk consumers. The samples were evaluated for preference through the hedonic scale of 5 points, asking about the score of the consumers and the preference of each type of milk. The test was conducted in two public schools. the data were submitted to ANOVA and Tukey test for comparison of means. Although goat's milk has some compositional characteristics and different physicochemical properties of cow's milk, there was no difference between them, due to acceptability between students of the public high school and elementary school network. The mixture 50% goat milk + 50% cow's milk generated greater rejection of the sampled population, a fact justified by the formation of small clots when mixing the different types of milks. Conventional cow's milk can be replaced by goat's milk in school meals, regardless of the age group and socioeconomic status of students.
SUMMARY The objective of this study was to evaluate the performance of male colonial chickens fed diet supplemented with commercial probiotic (Calsporin ®). A total of 210 male chicks Label Rouge lineage were used and they were raised in experimental shed up to 30 days old. These birds had free access to the pickets of Tifton-85, from 31-90 days of age. The experimental design was completely randomized, two treatments, one containing feed supplemented with probiotic Bacillus subtillis (300 g t-1 Bacillus subtillis 1×109 UFCg-1) and another one without it, with ten replications per treatment, consisting of 21 chickens/replication. The mean of body weight (BW), weight gain (WG), feed intake (FI), feed conversion (FC), mortality and viability were evaluated. The data were submitted to variance analysis and the averages of the treatments were compared by the F-test at 5% of significance. The addition of probiotic (300 g t-1 Bacillus subtillis 1×109 UFCg-1) in the diet of Label Rouge broilers did not interfere in the MW, WG, and FC variables in the total period from 1 to 90 days (P>0.05); the MFI variable differed (P <0.05), with higher consumption in chickens receiving the diet with the probiotic. The inclusion of probiotic in the wild-type chicken ration did not improve the productive performance of poultries possibly due to a low challenge by pathogenic microorganisms in the environments in which they were raised.
RESUMO Objetivou-se com este estudo avaliar o desempenho de frangos coloniais machos alimentados com ração suplementada com probiótico comercial (Calsporin ®). Foram utilizados 210 pintos de corte machos da linhagem Label Rouge, e foram criados em galpão experimental até os 30 dias de idade. Estas aves tiveram livre acesso aos piquetes de Tifton-85 (Cynodon spp.) dos 31 aos 90 dias de idade. O delineamento experimental utilizado foi inteiramente casualizado, dois tratamentos, um contendo ração suplementada com probiótico Bacillus subtillis (300 g t-1 Bacillus subtillis 1×109 UFCg-1) e outro sem suplementação, com dez repetições cada, constando 21 aves/repetição. Foram avaliados o peso corporal médio (PM), ganho de peso (GP), consumo de ração (CR), conversão alimentar (CA), mortalidade e viabilidade. Os dados foram submetidos à análise de variância, e as médias dos tratamentos foram comparadas pelo teste F a 5% de significância. A adição do probiótico (300 g t-1 Bacillus subtillis 1×109 UFCg-1) na dieta de frangos Label Rouge não interferiu nas variáveis GP, PM, e CA no período total de 1 a 90 dias (P>0,05); a variável CMR diferiu (P<0,05), sendo maior o consumo em aves recebendo a dieta com o probiótico. A inclusão de probiótico na ração de frangos caipiras não melhorou o desempenho produtivo das aves possivelmente devido a um baixo desafio por microorganismos patogênicos nos ambientes em que foram criados.
SUMMARY This study had as an objective to evaluate the carcass yield, morphology and intestinal pH of male country hick broilers raised on Tifton-85 pickets, fed with commercial probiotic supplemented ration. A total of 210 one-day-old males broiler's chicken from the Peeled Neck lineage were raised in experimental boxes on a conventional shed until 30 days of age, and from 30 to 90 days of age they had access to Tifton-85 pickets (Cynodonspp.). The carcass yield variables evaluated were live weight at 90 days, carcass weight (with foot, neck and head), carcass weight (without foot, neck and head), thigh, chest, wings, edible viscera, inedible viscera, abdominal fat, pH, length and weight of the gastrointestinal tract compartments (gut, duodenum, jejunum, ileus, proventriculus, gizzard, and cecum). All data went through analysis of variance, and the means of the treatments were compared by the F test with 5% of probability. Variables of carcass yield, primary and secondary cuts, length, weight and pH of gastrointestinal tract compartments were not influenced (P> 0.05) by treatments with and without probiotic addition. Inclusion of 300 g / ton of the probiotic Bacillus subtilis DSM 15,544 in broiler's chicken from the Peeled Neck lineage had no influence over the carcass yield, pH and morphology of the gastrointestinal compartments of the birds in the period and levels in the present experiment. The sanitary challenge was not enough to demonstrate the effectiveness of probiotic action.
RESUMO Objetivou-se com este trabalho avaliar o rendimento de carcaça e pH intestinal de frangos coloniais machos criados em piquetes com Tifton- 85, alimentados com ração suplementada com probiótico comercial. Foram utilizados 210 pintos de corte de um dia, machos, da linhagem Pescoço Pelado, criados em boxes experimentais em galpão convencional até os 30 dias de idade, e de 30 a 90 dias tiveram acesso a piquetes de Tifton-85 (Cynodonspp.). O delineamento experimental utilizado foi inteiramente casualizado, com dois tratamentos (ração convencional e ração convencional suplementada com probiótico “Bacillus subtillis DSM 15.544”) e cinco repetições, contendo 21 aves por tratamentos. As variáveis de rendimento da carcaça avaliadas foram peso vivo aos 90 dias (PV), peso de carcaça (com pé, pescoço e cabeça), peso da carcaça (sem pé, pescoço e cabeça), coxa, sobrecoxa, peito, asas, vísceras comestíveis,vísceras não comestíveis, gordura abdominale o pH dos compartimentos do trato gastrointestinal (papo, duodeno, jejuno, íleo, proventrículo, moela, ceco). Os dados foram submetidos à análise de variância, e as médias dos tratamentos foram comparadas pelo teste F a 5% de significância. As variáveis de rendimento de carcaça, cortes primários, secundários e pH das vísceras não foram influenciadas (P>0,05) pelos tratamentos com e sem adição de probiótico. Presumiu-se que o desafio sanitário não foi suficiente para demonstrar efeitos do probiótico sobre as variáveis de carcaça e pH dos compartimentos intestinais.