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However, there were no significant differences between T2 and T3 in regard to traits mentioned hereinbefore. Results revealed that inclusion of LE into BPSE diluent resulted in significant (p < 0.05) improvement in spermatozoan motility, viability and morphology of spermatozoa and acrosomes of roosters semen stored for 24, 48 and 72 h at 4 – 6 0 C compared with control group (T1). Effects of diluent supplementation with LE on mass activity, individual motility and percentages of dead spermatozoa, abnormal spermatozoa and acrosomal abnormalities of roosters semen stored for different storage periods (0, 24, 48 and 72 hours) at refrigerator temperature (4 – 6 0 C) were studied.
Treatment 1 was fresh semen and served as the control, T2 represented the semen diluted with BPSE diluent alone, while T3, T4, T5 and T6 were semen samples diluted with BPSE diluent and supplemented with 1, 3, 6 and 9 mg LE / 100 ml of diluent, respectively. experimental period (22 – 32 weeks of age). Semen samples were collected from all roosters once a week throughout the. Six treatment groups each of 7 White Leghorn cockerels, 22 weeks of age were used. This study was undertaken as an attempt to enhance the resistance of roosters’ semen to peroxidative detriments by supplementing Beltsville Poultry Semen Extender (BPSE) diluent of roosters’ semen with liquorice extract (LE). It is concluded from this study that the addition of carnitine to the diets of guinea fowl has led to improve semen characteristics of guinea fowl male. The results showed significant improvement (P<0.05) or (P<0.01) in ejaculate volume, mass motility, individual, sperm concentration, percentage of dead spermatozoa and abnormal spermatozoa, spermatocrit, acrosomal abnormalities and semen quality factor. Guinea fowl were reared during experimental period in separated cages. L-carnitine was added to the diets of birds at the beginning of 34 weeks of birds’ age till the end of experiment which lasted 18 weeks including 2 weeks as preliminary carnitine treatment period. Birds were fed during the whole period of birds rearing which lasted 22 weeks on diet contain 17.77 % crude protein and 2933.8 Kcal metabolic energy / Kg. These groups were fed by four levels of carnitine 0, 100, 200, 300 mg Carnitine / kg diet. Birds were randomly distributed into 4 groups (C0, C100, C200,C300). A total of 24 guinea fowl male, 30 weeks of old were used in this study. The effect of dietary supplementation with different levels of L – carnitine on semen characteristics of guinea fowl male. This study was conducted at the Poultry Farm of the Department of Animal Resource, College of Agriculture, University of Baghdad. The treatment of infertility and sexual apathy. Dietary supplementation with L-carnitine improved semen quality of local drakes therefore L-carnitine can be used as an efficient feed additive to improve reproductive performance of male ducksĬarnitine is a regulatory amino acid, necessary for the metabolism of long-chain fatty acids in the ß - oxidation, and it is important in the organization of the work of the blood brain barrier, and is very important in Relation to all semen quality traits included in this study. However, T4 (150 mg L-carnitine/kg of diet) recorded the best results with Supplementing the diet of drakes with L-carnitine at the levels of 50, 100 and 150 mg / kg of diet significantly increased ejaculate volume, spermatocrit, mass and individual motility of spermatozoa, and concentration of spermatozoa, while percentages of dead and abnormal spermatozoa and acrosomal abnormalities were decreased. The semen quality traits investigated were ejaculate volume, mass and individual motility of spermatozoa, spermatocrit, spermatozoa concentration, percentages of dead and abnormal spermatozoa and acrosomal abnormalities. Drakes were only fed experimental diets during the experiment which lasted three months.
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Treatment groups were: Treatment 1 (T1): Birds fed a diet free of L-carnitine (control group), Treatment 2 (T2): Birds fed a diet containing 50 mg L-carnitine/kg of diet, Treatment 3 (T3): Birds fed a diet containing 100 mg Lcarnitine/ kg of diet, and Treatment 4 (T4): Birds fed a diet containing 150 mg L-carnitine/kg of diet. Drakes were randomly allocated to four treatment groups with 12 drakes per treatment group, replicated three times, with 4 drakes in each replicate. A total of 48 male Iraqi ducks, which were 30 weeks old were used in this study. This study was conducted to determine the effect of supplementing Iraqi drakes with L-carnitine on semen