This experiment was conducted to evaluate the effect of different physical form of pre-starter diet on performance, nutrient utilization and development of gastrointestinal tract of broiler chicks during the first week of age. A total of 150-day-old male broiler chicks was allotted to a completely randomized design with three treatments and five replicates of 10 birds each. Treatments consisted of three physical forms of a commercial pre-starter diet: mashed, crumbled and pressed into pellets. Except for gizzard, the other organs […]

Feeds for pigs can be attributed different energy values according to, first, the step considered in energy utilization (DE: digestible energy, ME: metabolizable energy and NE: net energy) and, second, the method used for estimation at each step. Reference methods for evaluating DE content are based on in vivo digestibility measurements; indirect estimates of DE values are obtained from in vitro methods or prediction equations based on chemical characteristics. Methods have also been proposed for estimating urinary energy (and gas […]

This investigation was carried out to determine body composition of protein, fat, and energy as well as nutritional requirements of protein and energy for maintenance and weight gain of Morada Nova Lambs. Thirty lambs averaging 15 kg of initial body weight (BW) were used in this trial. To determine the body composition using the comparative slaughter approach six lambs were slaughtered at 15 kg (reference animals), six at 20 kg (intermediary slaughter), and the remaining were distributed in one of […]