Genetic studies on milk production traits and reproductive efficiency in rabbits

Faculty Veterinary Medicine Year: 2010
Type of Publication: Theses Pages: 138
Authors:
BibID 11056921
Keywords : Sexual behavior in animals    
Abstract:
The present study was conducted at the Rabbit Farm belonging to the Department of Animal Wealth Development, Faculty of Veterinary Medicine, Zagazig University, through the period from September 2009 to May 2010.The experimental flock composed of three rabbit breeds; New Zealand White, Rex, and Flander. These breeds were obtained from Agricultural Company Farm, San-El-Hagar Sharkiya Governorate.The main objectives of this investigation were to study:1. The effect of breed, parity, litter size and parity on some milk production traits.2. The effect of breed and parity on some Reproductive and litter traits of doe.3. The effect of breed, comparing the performance of purebreds versus crossbreds and estimating of heterosis % and combining ability for semen quality traits.significantly increased with increasing lactation number and thehighest prevalence of foot disorders were recorded in the first 100days in milk (11.42 %). The prevalence of foot disorders withlocomotion score 2, 3, 4 and 5 accounted for 40.3, 34.3, 9.6 and15.8 % respectively.The most common foot disorders recorded in the examined cowswere; A- Laminitis-related claw disorders, including subclinical- 
   
     
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