background: glutamine supplementation to the pre-starter diet of broiler chicks could improve their performance during the first week of post-hatch. objectives: this experiment was conducted to evaluate the influence of glutamine levels in the pre-starter diet on intestinal mucosa morphology and performance of broiler chicks. method: a total of 160 ross 308, one-day old broilers were used in a ...

this study was carried out to examine the effect of post hatch fasting (phf) period with and without subcutaneous injection of 0.6 ml ca-gluconate (ca-g) on productive performance and breast muscle development in broiler chicks up to day 28 of age. weight gain (wg) and feed intake (fi) were significantly reduced and fcr was increased as phf lasted for 36 h. injection of ca-g did not improve wg ...

Animals exposed to stress during development experience sustained morphological, physiological, neurological, and behavioral consequences. For example, elevated glucocorticoids (GCs) during development can increase GC secretion in adults. Studies have examined the sustained effects of elevated developmental GCs on total GC responses, but no study to date has examined the effect of developmental...

effects of post-hatch fasting (phf) and subcutaneous injection of ca-gluconate (ca-g) on productive performance, immune response and mortality of broiler chicks were investigated using 640 one-day-old ross 308 chicks in a 5×2 factorial experiment with five phf levels (zero, 12, 24, 36 and 48 h) and two ca-g injection levels (zero and 0.7 ml) in a completely randomized block design in four repli...

s of papers 89 feed, warmth and potential negative social interaction are potential factors that could affect mortality immediately after hatch. The post-hatch body weight at time of mortality used as a risk factor indicated that the divergently selected lines have about the same risk and less sensitive to reduced body weight compared to the control population. Through survival analysis, this s...

effect of early- feeding of broiler chicks immediately after hatch with gel or granule, on performance, the relative weight of yolk sac, liver, proventricolus, gizzard and the relative weight of weight and length of small intestine were investigated. analyzing the data by using sas statistical program including complete randomly design and duncan test, showed that post hatch feeding of gel, cou...

The antioxidant protection of the chicken (Gallus gallus) embryo during incubation and early postnatal development plays an important role in chick viability. To assess the antioxidant capacity of the newly hatched chick, we determined the concentrations of vitamin A, vitamin E, carotenoids and coenzyme Q₁₀ in the major tissues of chicks which had been held in an incubator for up to 36 h post-h...

After the collapse of striped bass Morone saxatilis stocks in the late 1970s, hatchery programs and release experiments were instituted to evaluate the potential to restore striped bass in Chesapeake Bay. Because survival of striped bass larvae to first feeding (7 d after hatch) is low in Chesapeake tributaries, ranging from 0.2 to 5.2% of eggs spawned, it is possible to enhance survival throug...

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...

Cytosine-guanosine deoxynucleotides (CpG) DNA can be delivered in ovo at embryo day (ED)18 for the stimulation of toll-like receptor (TLR)21 signaling pathway that ultimately protects chickens against a number of bacterial and viral infections. There is a dearth of information understanding the mechanisms of protection induced by in ovo delivered CpG DNA. The objective of this study was to dete...