Analysis Of Crossbreeding Effect Of Specialized Strains Of Domestic And Foreign Meat Rabbit

As so far,the main meat rabbit synthetic lines are Hyplus /Hyla and Yigole meat rabbit synthetic line that are come from France,as well as self-cultured Kangda meat rabbit synthetic line.These mature commercial meat rabbit lines all have very good specialized strains.However,it is necessary for us to further verify the crossbreeding effect among the specialized strains of different meat rabbits.In order to compared with the advantages and disadvantages between all the meat rabbit synthetic lines,deeply understand the performance of domestic and foreign specialized strains of meat rabbit,and evaluate their potential as breeding materials for breeding new mating lines,By carefully designing the test scheme and technical route,we have crossed 13 specialized strains of domestic and foreign meat rabbit from 4 breeding companies.Using the Heterosis,we have crossed two lines and four lines respectively,before and after the design of 34 hybrid combinations.In order to facilitate the evaluation of production performance,the principle of multi-character comprehensive index was used to evaluate.The evaluation indexes of reproductive performance(total number of litter,number of live litter,lactation capacity,weaning body weight),fattening performance(weight gain in growing period,feed / meat ratio)and viability performance(survival rate in growing period)of different mating combinations were constructed,the results were obtained from the results of each cross combination,and the Comprehensive Economic Efficiency Index was added to consider the economic benefits.The final evaluation is the production performance evaluation and economic benefit evaluation of the comprehensive analysis.After detailed statistical analysis of the relevant data of fertility index,growth index,vitality index,comprehensive index and comprehensive economic benefits,The results showed that the combination of PA· V,LD·I and PA·VI was the best.Hyla D and Kangda 1 had the best reproductive performance,the F1 Cross between Hyplus A and Kangda V Lines had the best fattening performance,and we selected the best cross combination as PA · V ·LD · I.The comprehensive performance is better than all the domestic and foreign mating systems.The results above provided a reference basis for promoting the production,application and continuous breeding of Meat Rabbit.