ABSTRACT
Birds show poor utilization of phytic phosphorus in their diets because of the lack of endogenous enzymes to digest phosphorus and make it bioavailable. Therefore, the objective of this study was to evaluate phytase supplementation in the diets of laying quails. Eighty quails were used in a completely randomized experimental design with five treatments and four replicates of four birds each. The treatments were as follows: 0.35% Pd; 0.20% Pd; 0.20% Pd + 500FTUs of phytase; 0.09% Pd; 0.09% Pd + 500 FTUs of phytase. The birds were housed in metallic batteries during a trial period of 21 days, for evaluation of egg production, egg weight, feed intake and feed conversion. After being collected, the eggs were sent to the nutrition laboratory of the department of zootechnics of the CEO/Udesc, where analyses of albumin, yolk and shell quality were performed. The results were subjected to analysis of variance, and the differences between the averages were compared using the Tukey test at 5% of significance. No differences (P> 0.05) were observed in terms of performance and egg quality parameters. We conclude that the inclusion of phytase in the diet of laying quails can be accomplished without compromising the performance and quality of the eggs. Additionally, 0.09% of 22 disponible phosphorus can be used to grant adequate performance for 21 days.(AU)
As aves possuem baixo aproveitamento do fósforo fítico das dietas, devido à falta de enzimas endógenas que consigam realizar a quebra e aproveitamento do mesmo. Objetivou-se no presente estudo avaliar a adição de fitase em dietas de codornas poedeiras. Foram utilizadas 80codornas, em delineamento experimental inteiramente casualizado composto por cinco tratamentos e quatro repetições, de quatro aves cada. Os tratamentos foram: 0,35% Pd; 0,20% Pd; 0,20% Pd + 500FTUs de fitase; 0,09% Pd; 0,09% Pd + 500 FTUs de fitase. As aves foram alojadas em baterias metálicas, em período experimental de 21 dias, para avaliação da produção de ovos, peso dos ovos, consumo de ração e conversão alimentar. Após coletados, os ovos foram encaminhados ao laboratório de nutrição do departamento de zootecnia do CEO/Udesc, onde foram realizadas as análises de qualidade de albúmen, de clara e casca. Os resultados obtidos foramsubmetidos à análise de variância e as diferenças entre as médias foram comparadas pelo teste de Tukey a 5% de significância. Não foram observadas diferenças (P>0,05) nos parâmetros de desempenho e qualidade de ovos avaliados. Conclui-se que a inclusão da fitase na dieta de codornas poedeiras pode ser empregada sem causar comprometimento do desempenho e qualidade dos ovos das aves. Adicionalmente, 0,09% de fósforo disponível pode ser utilizado, garantindo o desempenho em período de 21 dias de produção.(AU)
Subject(s)
Animals , Coturnix , Animal Feed/analysis , Enzymes/administration & dosage , Phosphorus, Dietary/administration & dosage , Eggs/analysis , Food Quality , Dietary MineralsABSTRACT
Birds show poor utilization of phytic phosphorus in their diets because of the lack of endogenous enzymes to digest phosphorus and make it bioavailable. Therefore, the objective of this study was to evaluate phytase supplementation in the diets of laying quails. Eighty quails were used in a completely randomized experimental design with five treatments and four replicates of four birds each. The treatments were as follows: 0.35% Pd; 0.20% Pd; 0.20% Pd + 500FTUs of phytase; 0.09% Pd; 0.09% Pd + 500 FTUs of phytase. The birds were housed in metallic batteries during a trial period of 21 days, for evaluation of egg production, egg weight, feed intake and feed conversion. After being collected, the eggs were sent to the nutrition laboratory of the department of zootechnics of the CEO/Udesc, where analyses of albumin, yolk and shell quality were performed. The results were subjected to analysis of variance, and the differences between the averages were compared using the Tukey test at 5% of significance. No differences (P> 0.05) were observed in terms of performance and egg quality parameters. We conclude that the inclusion of phytase in the diet of laying quails can be accomplished without compromising the performance and quality of the eggs. Additionally, 0.09% of 22 disponible phosphorus can be used to grant adequate performance for 21 days.
As aves possuem baixo aproveitamento do fósforo fítico das dietas, devido à falta de enzimas endógenas que consigam realizar a quebra e aproveitamento do mesmo. Objetivou-se no presente estudo avaliar a adição de fitase em dietas de codornas poedeiras. Foram utilizadas 80codornas, em delineamento experimental inteiramente casualizado composto por cinco tratamentos e quatro repetições, de quatro aves cada. Os tratamentos foram: 0,35% Pd; 0,20% Pd; 0,20% Pd + 500FTUs de fitase; 0,09% Pd; 0,09% Pd + 500 FTUs de fitase. As aves foram alojadas em baterias metálicas, em período experimental de 21 dias, para avaliação da produção de ovos, peso dos ovos, consumo de ração e conversão alimentar. Após coletados, os ovos foram encaminhados ao laboratório de nutrição do departamento de zootecnia do CEO/Udesc, onde foram realizadas as análises de qualidade de albúmen, de clara e casca. Os resultados obtidos foramsubmetidos à análise de variância e as diferenças entre as médias foram comparadas pelo teste de Tukey a 5% de significância. Não foram observadas diferenças (P>0,05) nos parâmetros de desempenho e qualidade de ovos avaliados. Conclui-se que a inclusão da fitase na dieta de codornas poedeiras pode ser empregada sem causar comprometimento do desempenho e qualidade dos ovos das aves. Adicionalmente, 0,09% de fósforo disponível pode ser utilizado, garantindo o desempenho em período de 21 dias de produção.
Subject(s)
Animals , Coturnix , Enzymes/administration & dosage , Phosphorus, Dietary/administration & dosage , Eggs/analysis , Animal Feed/analysis , Dietary Minerals , Food QualityABSTRACT
Background: Infection by helminthes is a main problem affecting sheep, causing significant economic losses. Among theseparasites that may affect sheep, Haemonchus contortus, a hematophagous parasite caused of anemia. The anemia due toparasitosis causes animal apathy, the main goal of most studies is to show how anemia affects animal performance, withlittle research on the relationship of animal behavior and helminthosis. Therefore, the objective of this study was to evaluate the effect of anemia caused by helminthes on the behavior of pregnant ewes before and after antihelminthic treatment.Material, Methods & Results: Pregnant ewes (n = 18) Lacaune breed from the same herd in Southern of Brazil wereclassified into three groups of six animals each according to their degree of anemia based on the Famacha method (F) andhematocrit counts (H) in addition to fecal examination on day 0 of the study. The groups were formed as follow: Group A(level 1-2 (F), (H) ≥ 30%), Group B (level 3 (F); (H) among 21-29%), and Group C (level 4-5 (F); (H) ≤ 20%). Famachamethod, hematological analysis and fecal examination were repeated at the end of the experiment on day 18. Behavioralassessment was done concomitantly by two methods: direct temporal observation with real-time registration and continuous observation with conspicuous registration for each event performed by the animal. Animal behavior was observedduring six periods (P1 to P6) six h a day (08:00-10:00 AM, 12:00-02:00 PM, and from 04:00-06:00 PM), being tree-pointperiods prior (P1, P2 and P3) and three after the antihelminthic treatment (P4, P5 and P6). The animals from the Group Chad higher eggs per gram (EPG) counts in faces when compared to other groups. The animals from the Group B showedhigher ratios of the variable lying ruminating (1.74) when compared to the Group A. Animals from the Group C showedhigher...(AU)
Subject(s)
Animals , Female , Pregnancy , Sheep/parasitology , Behavior, Animal , Helminthiasis, Animal/pathology , Helminthiasis, Animal/psychology , Gastrointestinal Tract/parasitology , HaemonchusABSTRACT
Background: Infection by helminthes is a main problem affecting sheep, causing significant economic losses. Among theseparasites that may affect sheep, Haemonchus contortus, a hematophagous parasite caused of anemia. The anemia due toparasitosis causes animal apathy, the main goal of most studies is to show how anemia affects animal performance, withlittle research on the relationship of animal behavior and helminthosis. Therefore, the objective of this study was to evaluate the effect of anemia caused by helminthes on the behavior of pregnant ewes before and after antihelminthic treatment.Material, Methods & Results: Pregnant ewes (n = 18) Lacaune breed from the same herd in Southern of Brazil wereclassified into three groups of six animals each according to their degree of anemia based on the Famacha method (F) andhematocrit counts (H) in addition to fecal examination on day 0 of the study. The groups were formed as follow: Group A(level 1-2 (F), (H) ≥ 30%), Group B (level 3 (F); (H) among 21-29%), and Group C (level 4-5 (F); (H) ≤ 20%). Famachamethod, hematological analysis and fecal examination were repeated at the end of the experiment on day 18. Behavioralassessment was done concomitantly by two methods: direct temporal observation with real-time registration and continuous observation with conspicuous registration for each event performed by the animal. Animal behavior was observedduring six periods (P1 to P6) six h a day (08:00-10:00 AM, 12:00-02:00 PM, and from 04:00-06:00 PM), being tree-pointperiods prior (P1, P2 and P3) and three after the antihelminthic treatment (P4, P5 and P6). The animals from the Group Chad higher eggs per gram (EPG) counts in faces when compared to other groups. The animals from the Group B showedhigher ratios of the variable lying ruminating (1.74) when compared to the Group A. Animals from the Group C showedhigher...