Keywords : Reproductive
Application of magnetic technology in local quail house and hatchery on performance, reproductive and physiological traits under heat stress
Iraqi Journal of Veterinary Sciences,
2019, Volume 33, Issue 2, Pages 259-266
Using magnetic technology has shown major potentials in different fields especially agriculture. Two experiments were conducted to investigate the using of magnetic technology application in local quail house and hatchery on productive and physiological traits under heat stress condition. Results revealed that quail when served 0.2 T magnetically treated water (MTW) were significantly (P≤0.05) better in most productive, reproductive characteristics in the 1st experiment: eggs production, water consumption, egg weight, shell strength, estrogen conc., also improved FCR in females, all semen quality and testosterone conc. in males. Also, total RBCs count, thrombocyte, blood pH, blood viscosity, plasma viscosity, blood iron (Fe), copper (Cu), calcium (Ca), thyroxin hormone and total count of Lactobacillus spp. in small intestine. However, reduction in dead sperm, abnormal acrosome, corticosterone conc., body temperature, blood clotting time, E. coli and fungi counts in both sexes. In the 2nd experiment using of magnetic technology on embryonic development traits of local quails incubating eggs that collected from experiment 1 were significantly (P≤0.05) higher in the most characteristics at the group of 0.2 T MTW as fertility, hatchability, chicks weight, immune status of hatched chicks. While reduction in dead embryo and heterophil-to- lymphocyte (H/L) ratio. Finally, the results of 0.2 T MTW achieved superiorly gains compared with the other groups.
The impact of melatonin administration on the fertility performance and several relating parameters during the breeding season in the Arabi ewes
Iraqi Journal of Veterinary Sciences,
2019, Volume 33, Issue 2, Pages 461-468
A total of twenty-four healthy ewes aged between 2-3 years old and weighed about 35.09 kg of body weight were divided randomly into four groups (6 animals for each group). The first group included the non-treated control group, while the other three groups were subjected to various oral doses of melatonin 9 mg, 12 mg and 15 mg/head, respectively. All treatments were applied at 6 o'clock in the morning, to investigate the effect of treatment with melatonin during breeding season on reproductive performance and levels of some biochemical parameters in Arabi ewes from 1 May to 1 October 2017. Blood samples 7ml were collected after one hour of treatment and then monthly during the pregnancy months to determine the concentrations of biochemical parameters. After Postpartum, lambed ewes/lambs number, birth weight, placenta empty weight and cotyledon number were recorded. The results showed significant (P<0.05) improvement in reproductive performance (fertility percentage, twinning rate and the number of offspring) when ewes administrated melatonin at two doses (12 and 15 mg/ head). Also, melatonin administration caused significant (P<0.05) decrease in the concentrations of thyroxin, cortisol, and cholesterol. Conversely, there was a significant increase (P<0.05) in glucose concentration after 1 hour of treatment. The concentrations of thyroxin, cortisol, cholesterol, and vitamin C increased significantly (P<0.01) in early-gestation compared with mid and late-gestation, while the concentrations progesterone and glucose increased significantly (P<0.05) in mid-gestation compared with early and late-gestation. In conclusion, melatonin administration at doses 12 and 15 mg/ head improves ewe reproductive performance (fertility percentage, twinning rate and the number of born lambs). Additionally, the gestation stage has a negative effect on the concentrations of thyroxin, cholesterol and vitamin C.