The objective of this study was to evaluate the effects of the microalgae Schizochytrium sp., as a dietary source of docosahexaenoic acid (DHA), on dogs with gingivitis. Two diets containing 0 and 0.4% of microalgae Schizochytrium sp. were offered for 30 days to 12 randomly distributed adult Beagles to determine gingivitis. Gingivitis score and area were analyzed on days 0 and 30. Prior to the analysis, the area was gently cleaned with cotton wool on the surface of the crown of the teeth. There was no change in the gingivitis score (P>0.05). However, there was a reduction (P<0.05) in the area affected by gingivitis (day 30-day 0) in animals supplemented with 0.4% microalgae Schizochytrium sp. The addition of 0.4% dietary microalgae reduced the area of gingivitis on dogs.
RESUMO Objetivou-se avaliar o coeficiente de digestibilidade aparente (CDA) dos nutrientes, a palatabilidade das dietas e as características fecais de cães alimentados com uma dieta controle e uma dieta contendo 20% de gérmen desengordurado (GD), com e sem adição de complexo enzimático (amilase, xilanase, betaglucanase e mananase). Para o experimento de digestibidade e das características fecais, foram utilizados 12 cães adultos, distribuídos em delineamento em blocos ao acaso, em esquema fatorial 2 x 2 (dieta x enzima). O segundo experimento avaliou a palatabilidade, por meio da primeira escolha e da razão de ingestão (RI) da dieta DC vs. 20% de GD, utilizando-se 16 cães. O teste de palatabilidade contou com três dias consecutivos, totalizando 48 repetições. A dieta com inclusão de 20% de GD teve os menores valores de CDA da MS, da EB e da EM (P<0,05). A inclusão do complexo enzimático melhorou o CDA da MS, da EB e da EM (P<0,05). Não foram observadas diferenças nas características fecais (P>0,05). Em relação à palatabilidade, os cães preferiram a dieta 20% de GD, tanto na primeira escolha como na RI (P<0,05). A inclusão de enzimas às dietas melhora a digestibilidade dos nutrientes e da EM, sendo um aditivo com potencial uso na alimentação de cães.
There is a growing demand for alternative protein sources in dog nutrition due to the high cost of the ingredient. Spray-dried egg (SDE) is a potential protein source in this context. The objective of this study was to evaluate the digestibility, palatability, and blood profile of diets containing different amounts of spray-dried egg (SDE) and the blood parameters of dogs fed these diets. For the study of digestibility and faecal quality (Experiment 1), eight Beagles were distributed in a double Latin square design (4X4), with four treatments (0, 4, 8, and 12% SDE) and four periods, totalling eight repetitions per treatment. In experiment 2, to evaluate palatability, 20 dogs were presented with two diets: 0% SDE vs 4% SDE. To evaluate the haematological factors (Experiment 3), eight dogs were maintained in a single group and were initially fed a control diet (0%SDE) for 10 days, followed by a diet containing 12% SDE for 10 days. In Experiment 1, a linear increase was found in the coefficients of total tract apparent digestibility (CTTAD) of dry matter (DM) and crude protein (CP) and in the metabolisable energy (ME) as the level of SDE was increased in the diet. The CTTAD of DM and CP in SDE and the ME obtained by regression analysis were 93.6%, 91.3%, and 5738.9 kcal kg -1 , respectively, demonstrating that SDE is a highly digestible protein source for dogs. There were no changes in the stool characteristics of dogs fed SDE. The results of Experiment 2 indicate that the dogs preferred the diet that included 4% SDE. In the haematological study (Experiment 3), increases in albumin, red blood cells, haemoglobin, and total circulating protein were observed, with no change in the other histological variables. The inclusion of SDE improved the digestibility and palatability of the diet and increased the albumin content, red blood cell count, haemoglobin level, and total protein level without changing the faecal characteristics.
Objetivou-se avaliar a influência de diferentes dietas sobre a produção de AS intestinal em cães e gatos. Foram analisados 166 dados referentes à concentração de AS fecal de experimentos realizados em cães e gatos. Não houve correlação entre o tipo de fibra sobre a produção de AS em cães (P>0,05). Houve correlação positiva entre a produção do AS com a ingestão de matéria seca (IMS), ingestão de proteína e sexo (P<0,05) em cães. Crescentes níveis de fibras aumentaram a produção de AS (P<0,05) em gatos. A produção de AS em cães parece estar correlacionado com a maior IMS e teor de proteína da dieta, enquanto gatos apresentam maior produção de AS intestinal quanto maior o teor de fibras da dieta.
A etapa de recobrimento de líquidos, além de outras funções, confere acabamento ao extrusado. Objetivou-se avaliar o grau de absorção de lipídeos sob diferentes temperaturas, mensuradas após sua saída do secador. A análise iniciou com temperatura em 48ºC, subindo gradativamente 1ºC até atingir 58ºC, totalizando 11 tratamentos (n=10). Houve aumento linear da absorção de lipídeos com o acréscimo na temperatura (P<0,05). Em conclusão, o acréscimo da temperatura do extrusado aumenta a absorção de gorduras no recobrimento.
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