Dissertation > Excellent graduate degree dissertation topics show

Studies on the Reproductive Performance of Boer Bucks

Author: RenJie
Tutor: ZhouZhanQin
School: Northwest University of Science and Technology
Course: Animal Genetic Breeding and Reproduction
Keywords: Boer goat rams Reproductive hormones Age Season Body mass Semen quality Selenium
CLC: S827
Type: Master's thesis
Year: 2011
Downloads: 45
Quote: 0
Read: Download Dissertation

Abstract


Boer goat rams more scientific farming and more rational selection and use of the Boer goat rams reproductive performance Linyou County, Shaanxi Province, (selenium deficiency District) grazing feeding conditions under observational studies, research content including: the Boer Goats lambs serum reproductive hormone levels with growth and development, and semen quality relationship, the seasonal variation of the Boer goat rams serum reproductive hormone levels, relationship, and selenium supplementation of Boer goat rams body mass and semen quality and serum reproductive hormone Boer goat ram semen quality, test methods and results are as follows: 1. radioimmunoassay was born in January 2010 in 20 to 10-month-old Boer goat lambs serum T, E2, FSH, LH level were determined. The results show that: lambs at 7 months of age, serum T levels rose rapidly and reached a peak value (380.49 pg / ml) in the 9-month-old, but only 25.97% of the young rams, E2, FSH and LH levels were low, can be seen, the Boer goat is not yet mature, and should not be breeding. 2 by radioimmunoassay of youth the Rams and adult Boolean goat breeding season, and the non-breeding season serum reproductive hormone levels were measured, and the results showed that: During the breeding season, the age Rams serum hormone levels were higher than the non-breeding season, which T levels were extremely significant, 1 to 1.5, 2 to 3.5 and 4 to 5-year-old ram serum T levels were 8.2,6.2 and 7.63 times of the non-breeding season. 1 to 1.5-year-old ram serum T, E2, FSH, LH level in the breeding season is generally low, 4 to 5-year-old Boer goat serum T decreased FSH and LH levels, serum E2 levels significantly higher than the 1 to 3.5-year-old male sheep. 2 to 3.5-year-old ram serum T highest reach 1395.91pg/ml. Shows that 2 to 3.5 years old Boer goat rams in the the reproductive physiology strong stage has a high breeding capacity, and during the breeding season. 3 automatic computer-aided analysis system (CASA) and radioimmunoassay of 24 different body mass 2 to 3 years old Boer goat ram semen quality and serum reproductive hormone levels were measured, and the results show that: BMI lt; 60kg / The m2 Rams mining lower precision mL of 0.79 ± 0.03. BMI gt; 80kg/m2 ram semen more (1.02 ± 0.07 mL), but poor semen density and vitality. BMI = 60 ~ 80kg/m2 Rams the amount of semen collection center, was 0.95 ± 0.12, but semen density of 28.32 ± 4.08 billion / mL, significantly above BMI lt; 60kg/m2 group (31.93b ± 2.06 million / mL) and BMI gt; 80kg/m2 group (25.96a ± 3.23 million / mL) (P lt; 0.05), and the high rate of sperm motility, abnormal sperm less. Body weight the poor Rams serum testosterone, estradiol and follicle-stimulating hormone levels were also lower, these three indicators with the amount of semen were positively correlated. Therefore, it is crucial to maintain the ram body mass production. 4 16. Choose the same feeding and management conditions (grazing feeding) 3-year-old Boer goat rams were randomly divided into experimental and control groups, the test group was injected with sodium selenite vitamin E 4ml / (selenium 0.46mg/ml) control group were not injected. Trial period 30d, respectively, in 10d, 20d and 30d collection of blood samples and determination of serum T, E2, FSH and LH concentration. The end of the trial, collected ram semen analysis. The results show that: the Boer goat rams injection of sodium selenite vitamin E injection, serum selenium rising rapidly, 20d peaked. Test groups Rams serum T and FSH concentrations significantly higher than those in the control group (P lt; 0.05), sperm motility was significantly higher (P lt; 0.05), but the two groups Rams serum E2 and LH concentration, semen volume, sperm density did not differ significantly (P gt; 0.05). Shows that selenium areas to ram selenium supplementation is necessary.

Related Dissertations

  1. The Research on Mixed-age Regional Activities Management of Kindergarten,G617
  2. Astragalus and selenium on the Flammulina growth and applied research,S646.15
  3. Ion Exchange Removal of Hexavalent Selenium in Raw Water,X703
  4. Tripartite Associations Among Bacteriophage WO, Wolbachia, and Host Affected in the Two-Spotted Spider Mite Tetranychus Urticae Koch,S433.7
  5. Comparative Analysis of Growth, Digestive Enzyme Activities and Pearl-SAC Development Between Two Different Sized Pinctada Martensii during Pearl Culturing,S917.4
  6. Comparison of Parasitism Behaviors and Study on Interspecific Competition between Trichogramma Ostriniae and Trichogramma Dendrolimi,S476.3
  7. The Effect of Endocrine Disruptor Fenvalerate on the Reproductive Capacity in Chicken,S831.5
  8. Study on the Critical Technics of Se-Enriched Garlic Products with Low Pungency,TS255.5
  9. The Research on the Microwave Stability of Selenium-Enriched Rich Bram,TS210.9
  10. Exploration of Soil and Crop Selenium for Development of Se-Rich Produce in Ruian, ZheJiang Province,S153
  11. Studies on Simulation Models to Controlled Tomato Growth and Development Based on Developindex,S641.2
  12. Effects of Selenium on Synaptosome Membrane Fluidity and PSD-93 of Hippocampus in Rats with Drinking Water Flurosis,R599
  13. The Molecular Mechanism Intervention of Selenium on the Learning and Memory Injury by Drinking Water Fluorosis,R599
  14. The Historical Research and the Experience and the Inspiration of the Polarization of Marxism during the Yan’an Age,D231
  15. Effects of Copper, Zinc and Selenium on Yield and Quality of Chrysanthemum Morifolium Ramat,S567.239
  16. Selenium Modification of Astragalus Polysaccharide and Its Antioxidant Activity in Vitro,R284.1
  17. Comparative Study between Paper and Digital Media,G206
  18. The Study on Breeding and Fermentation Conditions of a Selenium-Riched Yeast and Its Application Research,TS201.25
  19. Process Selenuum Enriched Flos Chrysanthemi and Its Antioxidative Activity,S682.11
  20. Retrospective Analysis of 648 Cases of Gastric Carcinoma,R735.2
  21. Studies on Selenium-Catalyzed Carbonylation to Unsymmetrical Ureas,O643.32

CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Livestock > Goat
© 2012 www.DissertationTopic.Net  Mobile