Objective criteria are needed for defining, in various animal species, changes occurring at puberty. Particularly required are estimates of the relationship of alterations in the growth of the whole body to the sex organs and the secondary sexual characteristics. A procedure that has been widely employed has been to plot testicular weight as a function of time and to observe inflection points.'...

It is generally recognized that the weights of organs, in proportion to body weight, show wide variations in animals of a given species, that they may differ in the two sexes, and that the ratio of organ to body weight changes with age or development. It has also been found that the weights of some organs, notably the endocrine glands, may be affected by other factors such as dietary and climat...

knowledge on animal requirement, available forage and its quality is fundamental for successful livestock and range management. since sheep is dominant grazing animal of rangelands in iran and there are over 27 sheep breeds and each breed has special body size, physiological condition and consequently different daily nutrition requirement, animal unit should be determinated for dominant breed o...

this study was conducted to investigate the effects of l-carnitine and different levels of animal fat on performance, carcass characteristics and some blood parameters of broiler chickens. two hundred one-day old male broiler chicks were allotted to5 treatments in 4 replicates and 10 birds in each replicate. dietary treatments consisted of: 1) diet with 5% vegetable oil (t1), 2) diet with 5% ve...

Effect of bile duct ligation (BDL) and internal biliary drainage on food intake and nutritional status was studied in rats and compared with sham and pair-fed animals. During week 1, food intake of BDL animals was reduced (p less than 0.05), resulting in weight loss (p less than 0.05). In weeks 2 and 3, food intake, nitrogen balance, and weight gain were similar in all groups. Internal biliary ...

for planning the grazing of rangeland according to difference in body weight and different energy requirements should determine forage requirement of animal unit. in the other hand, daily need of animal in rangeland depends on the quantity and quality of intake forage composition. for this purpose selected part of the rangeland of fereidunshahr in isfahan province was classified to vegetation t...

Disposable personal care products are part of modern life, but these could become a biological hazard in case improper disposal. Therefore, our study compared the biodeterioration plant-based woven materials (cotton, linen), animal (wool, leather), disposable hygiene with cellulose fibers (sanitary pads, cosmetic pads), and chemical impregnated (antimicrobial/sanitary wet wipes) using burial te...

This study was conducted to investigate the effects of L-carnitine and different levels of animal fat on performance, carcass characteristics and some blood parameters of broiler chickens. Two hundred one-day old male broiler chicks were allotted to5 treatments in 4 replicates and 10 birds in each replicate. Dietary treatments consisted of: 1) diet with 5% vegetable oil (T1), 2) diet with 5% ve...