Dissertation > Excellent graduate degree dissertation topics show

A Preliminary Study of Germplasm Characteristics on Xinjiang Brown Cattle

Author: ChengLiMing
Tutor: HuangXiXia；TianKeChuan
School: Xinjiang Agricultural University
Course: Animal Genetic Breeding and Reproduction
Keywords: Xinjiang brown cattle Growth law Meat performance Milk performance
CLC: S823.94
Type: Master's thesis
Year: 2009
Downloads: 53
Quote: 0
Read: Download Dissertation

Abstract


This article take the barn feeding and grazing Xinjiang brown cattle as object of the study, mainly study the growth developmental mechanism, the performance of meat producing, the milk performance and so on, preliminary study the germplasm characteristics on Xinjiang brown cattle. We expected to provide reference for breeding, standard revision and establishing production mode of bam feeding and grazing Xinjiang brown cattle. The result is as follow:1. Research on growth performance : Through the comparison of 1-6 months bam feeding calves with grazing calf and statistical analysis of body size and body weight in grazing Xinjiang brown cattle, we have studied the growth developmental mechanism of calves in different raising condition, the effect of age and parity on body size and body weight. The results showed that 1-6 months barn feeding calves grew faster, significant effect of age and parity on body size and body weight.2. Research on meat performance: The 38 and 62 grazing Xinjiang brown cattle were collected separately from Zhaosu town and Tacheng. The former cattle were separated into three groups by age（4 years old blow,4-7 years old,7 years old above）. The slaughtering property were determined of each group. Results indicated that the average live weight of 4-7 years old group is 386.62 kg, the dressing percentage is 50.24%, the meat percentage is 41.73% and the rate of meat to bone is 4.94:1 under the grazing condition. The main slaughtering index of this group is obviously superior to the 4 years old blow groups（.P<0.05）, no significant difference to 7 years old above （P＞0.05）,and 4-7 years old is the suitable slaughtering stage for Xinjiang brown cattle. A regress equation of body ruler and carcass weight was established by the statistics of 62 grazing Xinjiang brown cattle from Tacheng. Bull cattle: y=-170.732-1.205x1 + 1.184x2+2.053x3-3.176x4; Cow:y=-293.624+0.276x1+0.835x2+1.682x3+1.066x4.3. Research on milk performance:The 52 Xinjiang brown cattle from Zhaosu and the 154 lactating cows from Urumqi breeding cattle field were collected, milk production and milk composition were determined. We have compared the index of milk composition between barn feeding and grazing Xinjiang brown cattle, analyzed the change rule of milk ingredients, the influence of parity to milk ingredients and the correlation of milk production, fat percentage and protein percentage. Results demonstrated that the index of milk ingredients in grazing Xinjiang brown cattle is obviously higher than bam feeding Xinjiang brown cattle, the difference was extremely significant （P＜0.01）. The relationship between milk production and fat percentage, protein percentage is negative correlation, and the correlation coefficient is - 0.174（P＜0.01） and -0.245（P＜0.01）. The relationship between milk fat percentage and protein percentage was positive correlation, and the correlation coefficient is 0.41 l（P＜0.01）.

Related Dissertations

  1. Association POU1F1、GH、IGF1、IGF2 Gene Polymorphism with Early Growth Traits in Xinjiang Brown Cattle,S823.9
  2. Different Nutrient Levels to Xinjiang Brown Cow Daily Gain and Serum Biochemical, Hormone Levels Change Rules,S823.5
  3. Research on the Relationship of TLR4 Genotypes with Expression Level of NF-κB and Associated Genes in Xinjiang Brown and Holstein Cattle,S823
  4. Study of Lamb Growth Rate and Meat Performance on German Merino×Han F1, Poll Dorset×Han F1,S826
  5. The Growth Pattern and Influencing Factors for the Recurrenced Hepatic Hydatid Disease,R657.3
  6. Research on the Innovative Scientific Talents Growth Environment in Enterprise,F273.1
  7. Yanbian cattle bulls and steers growth and meat production performance comparison study,S823
  8. Effects of Physically Effective Neutral Detergent Fiber in TMR on Rumen Fermentation, Milk Production of Cows,S823
  9. Interested in reading , spontaneous reading natural harvest,G633.34
  10. Analysis of the Main Tree Species Growth Rule and Biomass of Quercus Broadleaved Mixed Forest in Qingyang County,S792.18
  11. A Study on Principles of Growth and Development Strategies of Experienced and Well-known Educators in High Schools,G635.1
  12. The Comparative Study on Mutton Performance and Visceral Organs Among Different Hybrid Combination of Gansu Alpine Merino,S826
  13. Screening and Application of Methionine-yielding Probiotics,S816
  14. Synthesis and Properties of SI3N4 Nanofibers Via Gas-pressure Annealing Method,TB383.1
  15. Effects of Organic Selenium on Milk Performance and Nutrient Digestion and Blood Biochemical Indicators of Dairy Cow,S823.5
  16. Effect of Vitamin A and Vitamin E on Milk Performance, Immune Function and Ruminal Fermentation of Dairy Cows,S823.5
  17. Effect of Ruminal Protected Vitamin A on Ruminal Fermentation, Milk Performence and Immune Function of Dairy Cows,S823.5
  18. Study on the Growth and Postrharvest Physiology of Fresh-eating Waxy Corn Fresh Fruit Ear,S513
  19. Study on the Meat Performance of New Breed Selection Population of Gansu Modern Meat Sheep,S826
  20. Association between Polymorphisms of κappa-casein Gene and Milk Performance Traits in Chinese Holstein Cattles,S823.91
  21. Systematic Study on the Characters of Seed and Cultivating Technology of the Bambusa Distegia,S795

CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Livestock > Cow > A variety of purposes cattle > Use either
© 2012 www.DissertationTopic.Net  Mobile