The influence of genotype on reproductive ability of animals
Journal Title: Біологія тварин - Year 2014, Vol 16, Issue 3
Abstract
Ukrainian Black Spotted Dairy breed for a long period was formed and improved through the use of Holstein bulls-sires, leading to an increase in the animal genotype of heredity proportion of improved breed. Research has been conducted on cows of different genotypes of the above mentioned breeds, which were obtained by absorbing crossing of Black Spotted females with Holstein sires. The 5 groups of animals were formed depending on the share of inheritance Holsteins: I group — Holstein inheritance share of 50 %, II group — 75 %, III group — 87.5 %; IV group — 93.75 % and V group — 100 % (pure-bred Holstein). We have researched the influence of Holstein blood conditional portion on the indices of reproductive ability in animals: age of the first insemination and calving, gestation length, service and between-calving periods, the rate of reproductive capacity, index of the fertility, index of insemination, fertilizing ability of heifers and firstborn cows after the first, second third and more insemination and output of calves per 100 cows. It was established that with the growing portion of the inheritance of Holstein breed, age of the first insemination of heifers and cows calving, the coefficient of animal reproductive capacity, the output of calves per 100 cows and heifers and first-born cows fertility after the first insemination is reduced, and the duration of the service periods and between-calving period and index of animal insemination are increasing. It should be noted that the percentage of the influence of genotype on indices of reproductive ability of animals thus was not high, but in most cases it was probable and ranged 0.19–4.67 %. Genotype had the highest impact on the duration of gestation in heifers, and the lowest — on the fertility index.
Authors and Affiliations
P. V. Bodnar, S. Y. Shcherbaty, Ye. I. Fedorovych
Keywords
Related Articles
- EP ID EP362261
- DOI -
- Views 117
- Downloads 0
Effect of L-carnitine in the composition of the diet bulls on lipid content and quality of sperm
Actual problems of modern biological science are the diagnosis of pathological changes in sperm, including oxidative stress. The main targets in the processes of free radical oxidation of sperm are lipids and their fract...
Nonspecific resistance and some hormones content in bulls blood under pre-slaughter stress correction
The data about content some nonspecific body resistance indices and certain hormones in bull blood after using of animal natural origin immunomodulators at pre-slaughter stress are presented in the article. Spleen extrac...
State of antioxidant defence system of loach embryos at influence of flurenizide
The aim of this work was to study the influence of Flurenizide (antibiotic of antimicrobial, antituberculous, antichlamydia, immunomodulator, antioxidant, hepatoprotective, antiinflammatory, antiviral action) on the anti...
Glucocorticosteroid activity of the adrenal glands of cows during pregnancy and for orthopedic, obstetric and gynecological pathologies
Endocrine research was performed by ELISA. Cortisol was determined in the blood serum of cows during pregnancy, 3–5 day after childbirth, at acute postpartum metritis, ovarian hypofunction, persistence of corpus luteum,...
The inner-breed karyotype variability of the cows of the Ukrainian red-brown dairy cattle breed with a varying degree of affinity
The paper describes the results of the research on karyotype variability for the cows of Ukrainian Red-Brown dairy breed with a varying degree of affinity. The purpose of research was comparative assessment of the effect...