alameldin, A. (2017). AN ATTEMPT TO IMPROVE SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL PERFORMANCE OF MALE AND FEMALE AGED INSHAS STRAIN LAYING HENS BY USING ZINC METHIONINE. Egyptian Poultry Science Journal, 37(1), 37-56. doi: 10.21608/epsj.2017.5410
alaa kamal alameldin. "AN ATTEMPT TO IMPROVE SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL PERFORMANCE OF MALE AND FEMALE AGED INSHAS STRAIN LAYING HENS BY USING ZINC METHIONINE". Egyptian Poultry Science Journal, 37, 1, 2017, 37-56. doi: 10.21608/epsj.2017.5410
alameldin, A. (2017). 'AN ATTEMPT TO IMPROVE SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL PERFORMANCE OF MALE AND FEMALE AGED INSHAS STRAIN LAYING HENS BY USING ZINC METHIONINE', Egyptian Poultry Science Journal, 37(1), pp. 37-56. doi: 10.21608/epsj.2017.5410
alameldin, A. AN ATTEMPT TO IMPROVE SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL PERFORMANCE OF MALE AND FEMALE AGED INSHAS STRAIN LAYING HENS BY USING ZINC METHIONINE. Egyptian Poultry Science Journal, 2017; 37(1): 37-56. doi: 10.21608/epsj.2017.5410
AN ATTEMPT TO IMPROVE SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL PERFORMANCE OF MALE AND FEMALE AGED INSHAS STRAIN LAYING HENS BY USING ZINC METHIONINE
*Dep. of Poul. Breeding Res., Anim. Prod. Res. Inst., Agric. Res. Cent., Minist. of Agric., Dokki, Giza, Egypt.
Abstract
This work was carried out to study the effect of dietary Zinc methionine supplementation on some productive, reproductive and physiological performance traits of aged male and female Inshas strain laying hens. A total number of 150 laying hen plus 15 cockerels of Inshas strain at 48 weeks of age were used in this experiment up to 60 weeks of age. All birds were randomly divided into five equal groups each of 30 females and 3 males, with three equal replicates, wing banded and individually weighed, with nearly similar average initial live body weight of all groups. The 1st group (T1) was fed the basal diet contained 50 mg Zinc oxide/kg diet according to NRC, (1994), and served as control, while 2nd, 3rd, 4th and 5th groups (T2, T3, T4 and T5 respectively) were fed the basal diet supplemented with 40, 60, 80 and 100 mg Zinc methionine/kg diet ,respectively. Final body weight, body weight gain, egg production percentage, shell thickness and shell weight percentage were significantly (P≤0.05) improved for birds fed diet supplemented with Zinc methionine at levels 60, 80 and 100mg/kg diet and albumen weight percentage at levels 40, 60, 80 and 100mg/kg diet compared to those fed the control diet. Gradual increase had been observed in plasma hemoglobin (Hb), red blood cells (RBCs), hematocrit,white blood cells (WBCs), lymphocyte percentage, testosterone, estrogen,progesterone and Zinc (Zn) concentrations and gradual decrease in plasma heterophill/lymphocyte ratio, phosphorus (P), Copper (Cu) and Iron (Fe) concentrations with increasing dietary levels of Zinc methionine compared to control group. Linear increase was observed in some semen quality traits {ejaculate volume (E.V), sperm concentration (S.C), live sperm percentage (L.S%), sperm motility (S.M), total sperm per ejaculate(TS/E) and total live sperm per ejaculate (TLS/E)},as well some histomorphological parameters of male testicular tissues (Germinal epithelium thickness and seminiferous tubular diameter), relative testes weight, relative oviduct weight, fertility percentage, hatchability percentage of total eggs and hatchability percentage of fertile eggs were linearly increased but, abnormal sperm percentage (Ab.S%) and total abnormal sperm per ejaculate (TAbS/E) were linearly decreased as the levels of Zinc methionine in cocks diet increased compared to cocks of control group. Data from the current study concluded that adding zinc methionine up to 100 mg/kg diet could be used as an efficient tool for improving productive, reproductive and physiological performance of male and female aged Inshas strain laying hens.
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