This study was conducted to investigate the morphological development of the Helmeted Guinea fowl (Numida meleagris) gastrointestinal tract preand post-hatch. Eighty seven (87) eggs were purchased from the Poultry unit of National Veterinary Research Institute (NVRI), out of which eighty one (81) were used for pre-hatch and six (6) were allowed to hatch for post hatch studies. The development w...

This study was conducted to determine the effects of different prestorage incubation (PRESI) times of 0, 3, 6 and 9 h on the hatchability of guinea fowl eggs stored for 14 d. A total of 80 eggs were assigned to each of the four PRESI treatments. PRESI-3h, PRESI-6h and PRESI-9h eggs were placed in an incubator at 37.5°C and 65% relative humidity for 3, 6 and 9 h, respectively, before storage wit...

Trichomonads belong to the phyllum protozoa (unicellular or acellular animals-the latter term being preferred for the more specialized protozoa); they are flagellated (class: mastigophora), animallike without chlorophyll (order: zoomastigina), and of the sub-order polymastigina-which comprises such protozoa which are mono-, di-, or multinucleate, with three to eight flagella per nucleus and wit...

The interstitial tissue of the testis was studied in gonadally active and gonadally inactive domestic fowl (Gallus gallus domesticus), guinea-fowl (Numida meleagris), duck (Anas platyrhynchos) and Japanese quail (Coturnix coturnix japonica). Gonadal inactivity in the fowl was induced by a single subcutaneous injection of 50 mg oestradiol benzoate. The structure of this tissue was similar in all...

We examined the energetic cost of loading the trunk or distal portion of the leg in walking and running guinea fowl (Numida meleagris). These different loading regimes were designed to separately influence the energy use by muscles used during the stance and swing phases of the stride. Metabolic rate, estimated from oxygen consumption, was measured while birds locomoted on a motorized treadmill...

We examined the changes in muscle energy use in guinea fowl running at 1.5 m s-1 either unloaded, or carrying trunk loads equal to 23% of body mass, or loads on their distal legs equal to a total of 5% of body mass. We estimated muscle energy use by measuring blood flow to all of the leg muscles using injected microspheres. Total blood flow to the leg muscles increased by approximately 15% unde...

*'IT IS PROBABLE that coccidia cause greater economic loss among domesticated animals of the temperate zone than any other group of protozoa." Thus Becker ^ aptly indicated the importance of coccidiosis, the specific disease caused by these protozoan parasites. It may be added that the coccidia probably cause greater economic loss among chickens alone than among all other domesticated animals c...