A simulation model was developed to predict corn crop residue yield and quality and intake and performance of growing cattle grazing cornstalks. The model is wholly deterministic and integrates the effects of weather, residue supply and animal components. Low temperatures increase animal energy requirements, whereas snow cover decreases residue available. Residual grain and leaf are calculated ...

Ten sets of five littermate pigs with a high genetic capacity for lean tissue growth (350 to 370 g/day) and reared via a segregated-early-weaning scheme were used to determine the dietary thiamin needs of pigs exhibiting a high rate of lean tissue growth. Within each litter, pigs were randomly allotted to one of five dietary thiamin concentrations equivalent to 200, 330, 460, 590, and 720% of t...

development, traditional dairy calf management programs have restricted the amount of liquid feed pre-weaning to about 10% of birth weight.[1] However, current research is focusing more on the effects of elevating the plane of nutrition for pre-weaned dairy calves. By increasing the volume of liquid fed pre-weaning to about 20% of birth body weight, the results have been higher average daily ga...

Data were collected over a period of 4 yr from bulls and heifers of two location-breed groups (East Tennessee-Polled Hereford, Cumberland Plateau-Angus). Variables measured and recorded at the time all calves were weaned (at an average age of approximately 230 d) were age (in d at time of data collection; AGE), weight (WT), visual condition score (COND), ultrasonically measured subcutaneous fat...

Chicken growth traits are important economic traits in broilers. A large number of studies are available on finding genetic factors affecting chicken growth. However, most of these studies identified chromosome regions containing putative quantitative trait loci and finding causal mutations is still a challenge. In this genome-wide association study (GWAS), we identified a narrow 1.5 Mb region ...

An extensive number of metabolic experiments have been carried out at the former Oskar-Kellner-Institute, now the ›Oskar Kellner‹ Research Unit of Nutritional Physiology at the Research Institute for the Biology of Farm Animals (FBN), Dummerstorf, on cattle, pigs and humans. Their expired amounts of CO2 having been compiled and stratified with regard to various performance and nutrition levels....