ASSESSMENT OF REPRODUCTION PERFORMANCE INDICES OF MARES BRED IN THE ROZTOCZE NATIONAL PARK DURING 1982–2016
Journal Title: Acta Scientiarum Polonorum Zootechnica - Year 2017, Vol 16, Issue 4
Abstract
The research objective was characterization and assessment of the reproduction parameters of the mares from the Polish Konik horses nature reserve in the Roztocze National Park (RNP) during the years 1982-2016. A total of 26 mares were studied and 197 reproductive utilization seasons analyzed. It was established that 187 pregnant mares delivered 182 live foals. The data served to calculate the following average reproductive performance indices for the mare population: foaling rate (94.9%), fertility (92.4%), infertility (5.1%), miscarriage (2.7%), reared foals (95.1%), fecundity (87.8%), reproductive utilization of herd (92.5%), number of years bred (7.57), number of born-live foals from a dam (7.0 unit) and number of reared foals (6.65 unit). Throughout the study period, the representatives of three female lines were maintained in the herd, i.e. Traszka, Zaza and Urszulka. The foaling dates are characteristic for seasonal polyestrous females, hence the highest birth rate was noted in March (25.83%), April (32.97%) and May (18.13%), that accounted for 76.93% (140 units) of total 182 foalings. Although some mares tended to deliver more foals of the same sex, the final birth record of the 34-year study indicated 49.45% of colts (90 units) and 50.55% of fillies (92 units). The mares Trzmielina and Hurtnica had the longest reproductionally active period, that is 25 reproduction seasons, and died being 32 and 30 years old, respectively. Each of them produced 22 foals. They had their last foal at age 26 and thus confirmed the vital utility traits of the Polish Konik horses, namely longevity, high reproductive performance and resistance as well as perfect adaptation to environmental conditions. The obtained average values characterizing the mare population under investigation are very favorable and promising with respect to further successful development of the conservative breeding in the RNP.
Authors and Affiliations
Michał Pluta
Keywords
Related Articles
- EP ID EP380535
- DOI 10.21005/asp.2017.16.4.04
- Views 115
- Downloads 0
IDENTIFICATION OF FECXO MUTATION IN THE BMP15 GENE IN PROLIFIC OLKUSKA SHEEP
The A1009C (N69H) mutation at the bone morphogenetic protein 15 (BMP-15) gene locus located on the X chromosome, which is considered a major gene, contributes to an increase in the number of lambs per litter. The aim of...
Changes in the body condition and daily milk yield of cows during lactation depending on the level of fat reserves before calving
The aim of the study was to analyse the effect of the level of fat reserves accumulated in the bodies of cows before parturition on changes in their body condition and daily yield after calving. The study was carried out...
PRINCIPAL COMPONENT ANALYSIS IN ASSESSMENT OF RELATIONS TO SOME PELLETED FEED CHARACTERISTICS
The paper describes the study of three feed mixtures, from which pelleted feed was produced. The main components of examined feed were wheat, corn and soybeans. Different proportions of components and varying degrees of...
POLYUNSATURATED FATTY ACIDS IN IDIOPATHIC EPILEPSY TREATMENT IN DOGS
Epilepsy is both a primary disease and secondary sign of various neurological and metabolic disorders. Idiopathic epilepsy could be burdensome in its course. It requires often a multidrug therapy, that can lead to seriou...
EFFECT OF SOME FACTORS ON TYPE OF CALVING AND PERIPARTURIENT DISORDERS IN DAIRY COWS
The study was performed with Polish Holstein-Friesian cows (Black-and-White variety) in five farms located in the Kujawsko-Pomorskie province (364 cows in two free-stall barns, average milk yield of 7844 kg; 158 cows in...