Dissertation > Excellent graduate degree dissertation topics show

The Effect of Endocrine Disruptor Fenvalerate on the Reproductive Capacity in Chicken

Author: BaiChunYan
Tutor: XiaDong
School: Nanjing Agricultural College
Course: Animal Nutrition and Feed Science
Keywords: Chicken Fenvalerate Fecundity Sex hormones Semen quality
CLC: S831.5
Type: Master's thesis
Year: 2011
Downloads: 5
Quote: 0
Read: Download Dissertation

Abstract


To investigate the effects of Endocrine Disrupting Chemical Fenvalerate (FEN) on the reproductive performance in male chicken.24 male chickens were randomly divided into 3 groups. The chicken from each group were orally administrated with 0,10,50 mg/kg of FEN everyday for 4 weeks. The semen quality, testicular structure, blood gonadal hormone were examined after four weeks. On the forth week, semen was collected and inseminated the healthy hens through artificially insemination method, the fertilized eggs were collected to detect the fetility and hatchability.Additionally, in order to study the effect of FEN on the fertility in female chicken,16 laying hens were divided into control group (receive vehicle only) and treatment group which was orally administrated with 10 mg/kg FEN everyday for 6 weeks. After 3 weeks treatment, the eggs were collected and the egg quality was detected, after 5 weeks, hens were bred with the semen from healthy male chicken through artificial insemination method, afterwards the fertilized eggs were collected to detect the fetility and hatchability.1. Effects of FEN on the reproductive performance in male chicken(1) Semen qualityOur results showed that the FEN had adverse effect on semen quality. The result showed that sperm motility from two treatment groups was significantly decreased, while the spermic abnormality rate were significantly increased compare with control group (P< 0.01).(2) Testicular morphologyThe results of testicular morphology showed that the diameter of semeniferous tubuli, the thickness of spermatogenic epithelium, the tuble area and the lumen opening were significantly reduced in 10 mg/kg treatment group(P< 0.05), the area of semeniferous tuble was significantly reduced in 50 mg/kg treatment group (P<0.05), while the diameter of semeniferous tubule, the thickness of spermatogenic epithelium and the lumen opening were not changed in 50 mg/kg treatment group.(3) Serum T and E2 The serum hormone results showed that FEN significantly reduced the level of serum E2 (P< 0.05), while no effect on serum T in all treatments.(4) The rate of fertilized egg and hatchabilityAfter 4 weeks treatment showed that, the percentage of fertilized egg was lower in the treatment of 10 mg/kg FEN as compared with the control group, it was 83.87% in control, but 74.63% in 10 mg/kg FEN. The hatchability was lower in the treatment of 10 mg/kg FEN than that of the control, it was 80.65% in control, but 67.16% in 10 mg/kg FEN.The percentage of fertilized egg was lower in the treatment of 50 mg/kg FEN as compared with the control group, it was 73.53% in control, but 65.12% in 50 mg/kg FEN. The hatchability was lower in the treatment of 50 mg/kg FEN than that of the control, it was 70.59% in control, but 64.18% in 50 mg/kg FEN.2. Effects of FEN on the reproductive capacity in female chicken(1) Egg qualityAfter 3 weeks treatment of 10 mg/kg FEN on hens, the albumen height of egg, the color of egg yolk, and the haugh unit were not changed, but FEN treatment significantly reduced the thickness and the intensity of eggshell (P<0.05).10mg/kg FEN have slightly effect on the rate of egg fertilization, the egg fertilization rate was 76.9% and 75.75% in control and treatment respectively. However,10 mg/kg FEN obviously reduced the hatchability, which was 73.08% in the control, but 48.50% in the treatment.Taken together these data suggest that:(1) FEN has adverse effect on the fertility in adult male chicken, it can damge the histologic structure of testis, decrease the area, smaller seminiferous epithelium and sperm motility, increase sperm abnormality, reduce the rate of egg fertilization and hatchability in mated hens. (2) FEN inhibited the secretion of estrogen and disrupted the ratio of E2/T, which may lead to cock breeding performance decline. (3) FEN decrease the thickness and intensity of egg shell, decrease the hatchbility of fertilized egg

Related Dissertations

  1. Study of Chicken Δ~6 Fatty Acid Desaturase Gene’s Promotor Region Polymorphism and Gene Expression,S831
  2. Study on Genetic Variation and Its Effects and Expression of CFL2 Gene in Chickens,S831
  3. The Correlation Analysis between Bulls HSP Gene Polymorphism and Semen Quality and Progeny Performance,S823
  4. The Comparative Study of the Characteristics in Different Breeds of Chicken during Postmorterm Aging,TS251.1
  5. Study on Heat-Induced Gelation Properties of Miexed Chicken Breast and Leg Myofibrillar,TS251.1
  6. Effect of Fasting on Rigor Mortis and Meat Quality of Chicken Breast Muscle,TS251.1
  7. Studies on Microbial Contamination and Microbial Decontamination of Chemical Substances of Fresh Chicken,TS251.1
  8. Parasitism Preference and Offspring Performance as Affected by Host Species and Captive Breeding in Meteorus Pulchricornis,S476.3
  9. Infectious Bursal Disease Virus Particle Vaccine Research and Its Immune Efficacy Evaluation,S858.31
  10. The Dynamic Distribution of Shigella Isolated from Chicken in Infected Chickens,S858.31
  11. Effects of 17β-E2 and chOPG on Proliferation, Apotosis, Cell Cycle, and mRNA Expression of BGP and Col Ⅰ of Ostoblasts Induced from BMSCs in Chicken Embryos,S858.31
  12. Effect of in Ovo Leptin Administration on Hepatic Expression of Genes and Micrornas Involved in Cholesterol Metabolism in Broiler Chickens,S831
  13. Study on the Digestive Tube During the Embryonic Stage of Gushi Chicken,S831
  14. Research on Relationship between Different TCM Dialectical Type and Associate with Sex Hormones and Risk Factors of Cardiovascular Disease in Perimenopausal Women of Hypertension,R259
  15. Maternal Exposure to Fenvalerate in Embryo Accelerated Age-related Changes of Behaviors in CD-1 Mice,R714.2
  16. Effects of Mannose-oligosaccharide on Intestinal Morphology and Bacterial Community in Gastrointestinal Tract of Broiler Chickens,S831.5
  17. Study on Molecular Markers of the Prolificacy in Hu Sheep,S826
  18. Effect of Ipriflavone on the New Calcium Channel Expression of Chicken Embryonic Small Intestinal Epithelial Cells in Vitro,S831
  19. Effects of Different Immunization on the Development of Immune Organs,cell Proliferation and Expression of Apoptosis-relatived Gene in Chicken,S858.31
  20. NO Intervention of Carbon Disulfide Toxicity on the Reproductive Secretion Function of Hypothalamus -pituitary-testis Axis in Male Rats,R363

CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Poultry > Chicken > Feed and nutrition
© 2012 www.DissertationTopic.Net  Mobile