Influence of gender and pedigree affiliation of the rabbits on growth and development of specialized meat breed

UDC 636.92

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.

Influence of gender and pedigree affiliation of the rabbits on growth and development of specialized meat breed.

Issue 4 (96), 2017

The influence of temperature and light conditions at the formation of sex in rabbits of specialized meat breeds

UDC 636.92

A. Pogorelova

The results of the analysis of the impact of the length of daylight and ambient temperature during pairing and pregnancy of the rabbit on multiple fetus and imitation rabbit sex in young specialized meat breeds. The multiple fetus found high rates of rabbit, detained for the duration of daylight hours 14-16 and temperatures of +11-20оС. Lower rates multiple fetus had rabbit for the duration of 6-8 hours of daylight and temperature and below 0оС and + +31оС and above. Dynamics of changes in multiple fetus toward greater with increasing duration of daylight and temperatures approaching the optimal maintenance. It was established that with increasing temperature to +30оС multiple fetus rabbit decreases. Determined that the least amount the rabbits born at low temperatures and minimum duration of daylight, but with an increase in the length of daylight increases and the number of births the rabbits. The studied, males are born contrary contribute to low temperatures and reducing the duration of daylight. The best value in offspring sex distribution (50/50) observed when approaching. Hold pairing with rabbit and pregnancy of the rabbit to +11о – +20оС and 12-14 hours duration of daylight. The analysis of variance of the factors in multiple fetus imitation rabbit and sex of calves. The results of analysis of variance indicate the likely impact of temperature and length of daylight on the floor in imitation of posterity, respectively 42 and 31%.

Key words: multiple fetus, hold, navpex, temperature, daylight, pregnancy.

The influence of temperature and light conditions at the formation of sex in rabbits of specialized meat breeds.

Issue №1 (93), 2017

The morphological and biochemical evaluation rabbits depending on the age of slaughter.

UDC 636. 92

A. Pogorelova, A. Kotsiybenko. 

Providing the population with food products of high quality in modern society is one of the most important tasks. The main road to solving this problem lies in the intensive development of livestock including rabbits.
The paper is an analysis of product yield rabbits slaughtered at different ages. The data on lipid and amino acid composition of meat rabbits showed a significant difference with biochemical and morphological structure of rabbits, depending on the age of slaughter. The most valuable for the amino acid composition of meat and ‘zhyrokyslotnym povnovikovyh’ rabbits and calves slaughtered in the 120-day age. In adult rabbit meat increases fat by 3. 1 times and 13. 7% decreases the amount of water compared to the 90-day youngsters.
Accordingly, it should be noted that the age of rabbits significantly change the amount of meat and internal fat. Value is the share of physiological systems is almost unchanged over the life of the animal. The most complete chemical composition of a rabbit and the fat in rabbits, are in those that have reached their full physiological development. With physiological maturity, the carcass of rabbits composition changes in the direction of increasing the number of fatty acids.
Growing rabbits in units “Rabbitaks-8” allows you to receive high-quality, environmentally friendly rabbit products. In the future we plan to investigate the effect of sex and castration on the biochemical composition of different ages in rabbit slaughter.

Key words: rabbit, bird, biochemical composition, morphological structure, composition zhyrokyslotnyy.

Morphological and biochemical evaluation rabbits depending on the age of slaughter.

Issue 2(89), Part 1, 2016