The aim was to evaluate the association of Saccharomyces cerevisiae (Sc) with threonine (T), in broiler diets, on performance, carcass quality and gut histomorphometric variables. One hundred Ross male broilers (1 to 43 days old) were distributed into four treatments D1: basal diet (BD), D2: BD plus 5 g Sc/kg feed, D3: BD plus 30% T and D4: D3 plus 5 g Sc/kg feed. Productive v...

in the present study, to estimate genetic parameters and genetic and phenotypic trends in holstein dairy cows in the north of iran, the records from first lactation of 11398 collected from 1989 to 2006 were used. records were collected from 290 herds. productive traits were 305 day-2x adjusted milk and fat yield and reproductive traits were age at first calving, calving interval and dry days. g...

This paper creates a bi-directional prediction model to predict the performance of carbon fiber and the productive parameters based on a support vector machine (SVM) and improved particle swarm optimization (IPSO) algorithm (SVM-IPSO). In the SVM, it is crucial to select the parameters that have an important impact on the performance of prediction. The IPSO is proposed to optimize them, and the...

The article presents data on the effect of phytobiotic additive “Activo” at a dose 0.2 g/kg feed piglets live weight growing and finishing fattening periods. average daily gain consumption per 1 kg were determined during experiment. Among biochemical parameters it was level total proteins, protein fractions (albumin globulins), calcium inorganic phosphorus. morphological in blood both periods d...

This research was carried out at the Santa Inés farm (Faculty of Agricultural Sciences, Universidad Técnica de Machala), El Oro Province, Ecuador. The main objective to evaluate effect Moringa oleifera leaf meal on productive and economic parameters Cobb 500 chickens. For biosecurity well-being birds, a pre-established managemet for open-shed systems in area used, applying basic vaccination sch...