A. Pogorelova, post-graduate student
Mykolaiv National Agrarian University
The dynamics of live weight of males and rabbits of specialized meat breeds is investigated. It was found that Californian rabbits at 30 days of age are inferior to Pannon white and New Zealand white for 45 and 35 g, respectively. The dynamics of the absolute increase in live weight of rabbits is determined. It was found that the predominance of females over males on the values of absolute growth was an average of 131 g. The variance of the variability of the influence of sex and race on the live weight of rabbits at different ages was investigated. It is established that its value is greatest at birth of rabbits (58.3%). The variance of the variability of the influence of sex and race on the absolute and on the average daily increment of live weight of rabbits is determined. It has been established that the chance variation of the average daily gain of live weight of rabbits decreases from 35.3% to 5.2% (almost sevenfold), and the determined influence of the species affiliation on the variability of the average daily gain of live weight of rabbits in all investigated periods was on the same levels – from 9.7 to 10.4%. The interaction of the genital affiliation and gender on the absolute growth of live weight from birth to the 30th day of age is the highest – 48.9%, and the lowest is observed in the period from 61 to 90 days of age – 40.2%.
The significant influence of sex on the variability of development of rabbits of the specialized meat production direction during the period of early ontogeny development has been proved. It is determined that the greatest influence of sex on absolute growth of live weight is observed for the period of 61 … 90 days, its value exceeds the value of the period from birth to 30 days of age by 27,7%. It is determined that the development of live weight and indicators, which characterizes it is influenced by sex, and on growth – the relationship of sex and race membership. It was investigated that the results of the observation of the dynamics of live weight during the periods of grazing and fattening of high-yielding rabbits showed that rabbits are likely to exaggerate males.
Keyword: gender, live weight, variability, growth, development, breed, velocity, absolute growth.