Different N6: N3 Ratios on Performance, Egg Quality, and Health of 81-Week-Old Laying Hens

This study aimed to evaluate different n6:n3ratios on performance, serum biochemical variables, and egg quality in 81-week-old laying hens. A total of 224 laying hens, 81-week-old Hysex White, were utilized and distributed in a completely randomized design consisting of seven treatments and eight replications of four birds per cage, totaling 56 cages. The experimental treatments consisted of seven different n6:n3fatty acid ratios: 1.0:1.0, 2.0:1.0, 4.0:1.0, 8.0:1.0, 16.0:1.0, 32.0:1.0, and 64.0:1.0. For diet formulation, sunflower oil, rich in omega-6, and linseed oil, rich in omega-3, were used. Productive performance, egg quality and serum biochemical variables of laying hens were evaluated at the end of the cycle at 26, 27, and 28 days. Analysis of variance (ANOVA) was conducted and orthogonal contrasts were used to obtain the sum of squares of the treatment of the analysis of variance in polynomial regression effects. Egg quality variables did not vary significantly between the diets. Therefore, diet supplementation with polyunsaturated fatty acids at different ratios was possible without altering egg quality. The only exception was Haugh unit, which displayed a quadratic effect indicating that the best value was the n6:n3ratio of 32, according to data significance. It was concluded that an increase in n6:n3ratios decreases laying hens' feed intake. The n6:n3 ratio of 34.64 provides greater eggs' Haugh units, decreasing from that value on. The ratios of n6:n3 did not influence the hens' serum biochemical variables.(AU)

Laparoscopic paracostal herniorrhaphy in a dog: case report / Herniorrafia paracostal laparoscópica em um cão: relato de caso

Traumatic paracostal hernia is classified as an abdominal hernia that protrudes from the abdomen to a non physiologic space over the ribs. Treatment requires surgical reconstruction of the disrupted musculature in the thoracoabdominal region. Laparoscopic paracostal herniorrhaphy was performed in an eight-month-old male Teckel, presented after a car accident injury. A three-portal laparoscopic access was used for definitive diagnosis and hernia correction. After traction of the herniated omentum, a thoracoabdominal communication caused a left side pneumothorax, which was successfully drained with a chest tube placement. The herniorrhaphy was accomplished with intracorporeal sutures by a combination of Ford interlocking and cross mattress patterns. The postoperative period was uneventful. The laparoscopic paracostal herniorrhaphy was satisfactory, allowing both diagnosis and correction of the paracostal defect, showing to be a feasible alternative to the open surgery.(AU)

A hérnia traumática paracostal é classificada como uma hérnia abdominal com abaulamento do abdômen formando um espaço não fisiológico sobre as costelas. O tratamento consiste em reconstituir cirurgicamente a musculatura rompida da região toracoabdominal. A herniorrafia paracostal laparoscópica foi realizada em um cão da raça Teckel, macho de oito meses de idade, com histórico de trauma automobilístico. Optou-se pela utilização da abordagem laparoscópica tanto para o diagnóstico definitivo quanto para a correção da mesma. Foi utilizado o acesso com três portais, permitindo a tração do omento herniado, momento este em que o animal apresentou pneumotórax devido a uma comunicação toracoabdominal esquerda. O paciente foi submetido à toracocentese e adaptação de dreno no hemitórax esquerdo. A herniorrafia foi realizada com sutura intracorpórea em padrão contínuo de colchoeiro e festonada de Ford com fio monofilamentar náilon zero. O paciente apresentou rápida recuperação pós-operatória, sem ocorrências de recidivas. Assim, a herniorrafia paracostal laparoscópica mostrou-se satisfatória, possibilitando o diagnóstico definitivo e concomitante correção do defeito abdominal e diafragmático, podendo ser indicada como uma alternativa à cirurgia convencional.(AU)