background:growth is one of the most important indices in child health. the best and most effective way to investigate child health is measuring the physical growth indices such as weight, height and head circumference. among these measures, weight growth is the simplest and the most effective way to determine child growth status. weight trend at a given age is the result of cumulative growth e...

age and growth of mesopotamian barb, capoeta damascina, were studied in the zayandehrud river, in central iran, from march 2007 to april 2008. among the 689 specimens studied, age groups in males ranged from 1+ to 9+ and that in females ranged from 1+ to 10+. the sex ratio (1m:1.6f) was not significantly different from 1:1 ratio. maximum fork length and weight was 39 cm and 1,115 g for males an...

this study evaluated the effects of drinking thyme essence (dte) (zero, 0.10, 0.15 and 0.20 ml/l) on growth performance, immune response and changing of intestinal bacterial population in broiler chickens. a total number of 500 day old male broiler chicks (ross 308), were randomly assigned to 4 treatments with 5 replicates and 25 chickens per each, based on a completely randomized design (crd)....

This study was conducted to compare some nonlinear functions to describe the broiler growth curve of the Cobb500 strain. A flock of fifty one-day-old chicks were randomly selected from a henhouse of 2500 chicks. Our goal was to establish a growth curve using weighting data using mathematical solutions of time-dependent differential functions. In total, six equations were subjected to a statisti...

in the current study, two line with short-term divergent selection for high weight (hw) and low weight (lw) at 4 wk of age after 7 generation were analyzed in coturnix japonica quail. hw line was significantly higher than lw line at 28d of age (p<0.01). 21 females, and 11 male from the hw, 18 females plus 10 male from the lw lines were mated as reciprocal cross and within lines to produce hh, l...

individual grain weight of wheat kernels differs with their positions on a spike. cultivation practices (such as fertilizer nitrogen and plant growth regulators application) can be used to improve weight of basal and distal kernels. for this purpose, two experiments based on randomized complete block design were carried out with three replications. the aim of this research was to study the mech...

in this study, age and growth for two populations of shemaya, chalcalburnus chalcoides, in haraz and shirud rivers were investigated from april to june 2006. 704 fish specimens were collected using a cast- net. the maximum length and weight in a 5- year old female observed were 251 mm and 96 gr, respectively. the most abundant age groups were 2+ and 3+ years for male and female respectively. wh...