Fatty acid, protein and energy gain of broilers fed different dietary vegetable oils

The objective of this study was to assess energy, nitrogen, fat and fatty acid deposition in broilers fed diets containing different vegetable oil sources. Forty female broiler chickens were fed five diets, with different fats [coconut, palm, olive, soybean (SO) and linseed oil (LO)] at 10% from 30 to 50 days of age. The animals consuming the LO diet presented the lowest body fat content. There were no differences among treatments regarding nitrogen balance. The greater percentage of apparent metabolizable energy was obtained with the LO diet. All animals deposited more saturated and monounsaturated fatty acids than digested, however the amount of polyunsaturated fatty acids deposited in the SO and LO treatments was lower than the amount digested. These results indicate that chickens that consumed the highly polyunsaturated diets deposited less fat due to lower gain of polyunsaturated fatty acids. El objetivo de este estudio fue evaluar el efecto de la fuente de grasa dietética sobre el depósito de energía, nitrógeno, grasa y ácidos grasos en pollos broilers. Cuarenta pollos broiler hembras fueron alimentados de los 30 a los 50 días de edad con cinco tratamientos que diferían en el tipo de grasa añadida (10%): aceite de coco, palma, oliva, soja (SO) y linaza (LO). Los animales que consumieron la dieta LO presentaron el menor contenido en grasa corporal. En el balance de nitrógeno no se observaron diferencias entre tratamientos. Sin embargo, en el balance de energía, el mayor porcentaje de energía metabolizable aparente se obtuvo con el pienso LO. En el balance de ácidos grasos, en todos los tratamientos se produjo un aumento en la concentración de ácidos grasos saturados y mono-insaturados retenidos con respecto a los digeridos. En cuanto a los ácidos grasos poliinsaturados, en los tratamientos SO y LO se depositaron menos de los que se digirieron. Estos resultados indican que los pollos que consumieron las dietas altamente poliinsaturadas depositaron menos grasa y que esta disminución fue causada por una menor retención de los ácidos grasos poliinsaturados

Effects of oxidated fat and vitamin E inclusion on resistance to haemolysis, intestinal microbiota, faecal coccidia counts and epithelium structure of broiler chicken

Unsaturation level decrease oxidative stability of dietary lipids, generating oxidation products which may be harmful for animals and its intestinal microbial population. The aim of the present trial was to study the resistance to haemolysis, ileal microbiota, faecal coccidian concentration and epithelial structure in relation to different oxidation level and stabilization of the added fat

Using the Biocheck.UGent™ scoring tool in Irish farrow-to-finish pig farms : Assessing biosecurity and its relation to productive performance

Background: Biosecurity is one of the main factors affecting disease occurrence and antimicrobial use, and it is associated with performance in pig production. However, the importance of specific measures could vary depending on the (national) context. The aim of this study was to describe the biosecurity status in a cohort of Irish pig farms, to investigate which of those biosecurity aspects are more relevant by using the Biocheck.UGent™ scoring system, and to study the impact of such aspects on farm performance. Results: External biosecurity score was high compared to most countries due to the characteristics of the Irish pig sector (i.e. purchasing only semen and breeding gilts on farm). The internal biosecurity score was lower and had greater variability among farms than other EU countries. Using multivariable linear regression, the biosecurity practices explained 8, 23, and 16% of variability in piglet mortality, finisher mortality, and average daily gain, respectively. Three clusters of farms were defined based on their biosecurity scores (0 to 100) using principal components and hierarchical clustering analysis. Scores for clusters 1, 2 and 3 were (mean ± SD) 38 ± 7.6, 61 ± 7.0 and 66 ± 9.8 for internal and 73 ± 5.1, 74 ± 5.3 and 86 ± 4.5 for external biosecurity. Cluster 3 had lower piglet mortality (P = 0.022) and higher average daily gain (P = 0.037) when compared to cluster 2. Conclusions: Irish farms follow European tendencies with internal biosecurity posing as the biggest liability. Our results suggest that practices related to the environment and region, feed, water and equipment supply, and the management of the different stages, need to be addressed in lower performing farms to improve productive performance. Further studies on the economic impact of these biosecurity practices including complementary data on herd health, gilt rearing, piglet management, vaccination and feeding strategies are needed

Description and validation of the Teagasc pig production model

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Characterizing Canine Glioma as a Naturally Occurring Model for Immune Evasion in Human Glioma

No abstract available

Characterizing Canine Glioma as a Naturally Occurring Model for Immune Evasion in Human Glioma

No abstract available

Fatty acid, protein and energy gain of broilers fed different dietary vegetable oils

The objective of this study was to assess energy, nitrogen, fat and fatty acid deposition in broilers fed diets containing different vegetable oil sources. Forty female broiler chickens were fed five diets, with different fats [coconut, palm, olive, soybean (SO) and linseed oil (LO)] at 10% from 30 to 50 days of age. The animals consuming the LO diet presented the lowest body fat content. There were no differences among treatments regarding nitrogen balance. The greater percentage of apparent metabolizable energy was obtained with the LO diet. All animals deposited more saturated and monounsaturated fatty acids than digested, however the amount of polyunsaturated fatty acids deposited in the SO and LO treatments was lower than the amount digested. These results indicate that chickens that consumed the highly polyunsaturated diets deposited less fat due to lower gain of polyunsaturated fatty acids. El objetivo de este estudio fue evaluar el efecto de la fuente de grasa dietética sobre el depósito de energía, nitrógeno, grasa y ácidos grasos en pollos broilers. Cuarenta pollos broiler hembras fueron alimentados de los 30 a los 50 días de edad con cinco tratamientos que diferían en el tipo de grasa añadida (10%): aceite de coco, palma, oliva, soja (SO) y linaza (LO). Los animales que consumieron la dieta LO presentaron el menor contenido en grasa corporal. En el balance de nitrógeno no se observaron diferencias entre tratamientos. Sin embargo, en el balance de energía, el mayor porcentaje de energía metabolizable aparente se obtuvo con el pienso LO. En el balance de ácidos grasos, en todos los tratamientos se produjo un aumento en la concentración de ácidos grasos saturados y mono-insaturados retenidos con respecto a los digeridos. En cuanto a los ácidos grasos poliinsaturados, en los tratamientos SO y LO se depositaron menos de los que se digirieron. Estos resultados indican que los pollos que consumieron las dietas altamente poliinsaturadas depositaron menos grasa y que esta disminución fue causada por una menor retención de los ácidos grasos poliinsaturados

Canine Gliomas Immune Evasion: Immunohistochemical Study of Programmed Death Ligand 1 Expression and Tumour-infiltrating Lymphocytes

No abstract available