The national database of the use of stallions, supplied by the Department of Animal Registration and Breeding Organization of the Hungarian National Food Safety Authority was analyzed for the purpose of this research. 680 foaling data of 7 horse breeds was processed during the work. The factors effecting gestation length were examined by univariate analysis of variance (GLM). Breed, month of mating, method of fertilization, age of the mare, and sex of the foal were considered as fixed effects, and the sire was used as random effect in the study. The population genetic parameters of gestation length were also estimated. The overall mean value of gestation length was 334.1±2.62 days. Differences between the breeds were not significant. The effect of month of mating and effect of sex of foal on the gestation length were statistically proven (P<0.01). The mares fertilized in March and April had the longest gestation lengths 342.4 days, 341.4 days, respectively. In the cases of mares fertilized in later months of the year the gestation length was about 10 days shorter. Fillies had longer gestation length (335.6 days), than colts (333.5 days). Method of fertilization and age of the mare had no significant effect on the gestation length. The effects of sire on the gestation length were significant (P<0.05). The heritability (h 2 ) of gestation length was 0.18. Based on the analysis it can be presumed, that if the mares are kept in a suitable environment (professional nutrition, good health and breeding practices), well-balanced gestation parameters can be expected in the case of any genotypes. ÖsszefoglalásA Szerzők a NÉBiH Állattenyésztési Igazgatóság Tenyésztés Szervezési és Teljesítményvizsgálati Osztályától kapott országos ménhasználati adatbázist dolgozták fel. A munka során hét lófajta összesen 680 ellési adatát értékelték. A vemhességi időt befolyásoló tényezők hatásának vizsgálatát többtényezős varianciaanalízissel (GLM) végezték. A munka során fix hatásnak tekintették a fajtát, a fedeztetés hónapját, a termékenyítés módját, a kanca életkorát, valamint a megszületett csikó ivarát. A modellbe véletlen hatásként az apát is beépítették. A vemhességi idő tulajdonság populációgenetikai paramétereit is megbecsülték. A vemhességi idő főátlaga 334,5±2,62 nap volt. A fajták közti különbségeket nem találták statisztikailag igazolhatónak. A fedeztetés hónapjának, valamint a csikó ivarának a hatása statisztikailag igazolhatóan (P<0,01, ill. P<0,05) befolyásolta a vemhességi időt. A leghosszabb vemhességi idővel (342,4 nap, ill. 341,4 nap) a márciusban és áprilisban termékenyített kancák rendelkeztek. Az év későbbi hónapjaiban termékenyített kancák vemhességi ideje ennél mintegy 10 nappal rövidebb volt. Kancacsikó születése esetén a vemhességi idő (335,6 nap) hosszabb volt, mint a méncsikóknál (333,5 nap). A termékenyítés módja, valamint a kanca életkora nem gyakorolt szignifikáns hatást a vemhességi időre. Az apa hatása a vemhességi idő tulajdonságra statisztikailag igazolhatónak (P<0,05) bizonyult. A vemhességi idő örökölh...
Live weights and 21 body measurements of 110 adult brood mares from Hungarian Thoroughbred broodmares were evaluated. Body measurements and some body measure indices were determined. One way ANOVA was used to compare the studs. Regression equations were developed to estimate the live weight from body measurements. The overall mean values of body measurements were as follows: live weight 542.0 kg, height at withers with stick 160.9 cm, height at withers with tape 168.8 cm, height of back 151.9 cm, height at rump 159.9 cm, depth of chest 75.5 cm, height of bieler-point 85.4 cm, length of body 163.3 cm, diagonal length of body 167.5 cm, upper neck measure 93.6 cm, length of back 85.2 cm, length of rump 49.6 cm, width of breast 46.0 cm, width of chest 48.0 cm, 1st, 2nd, 3rd width of rump 56.0-54.2-23.2 cm, circumference of chest 192.1 cm, circumference of cannon bone left front-rear 19.8-22.0 cm, length of head 59.3 cm, width of head 22.9 cm. The standard deviation and cv% values of body measurements were between 0.7-5.8 cm and 2.1-6.7%, respectively (excluding 3rd width of rump). Only few differences among studs, concerning evaluated body measurements, were presented-firstly: body measurements, related to the kilter and nutritional status (hearth girth)-were significant. Between the mentioned traits and the live weight medium positive correlation (r = 0.47-0.79; P<0.01) was found. For the estimation of live weight with regression model the necessary data are as follows: hearth girth, 2 nd width of rump and diagonal length of body. The determination coefficient was 0.80 (P<0.01). As a conclusion it can be stated that the Thoroughbred population in Hungary is quite homogenous in terms of the most important body measurements.
Live weight and 21 body measurements of 110 Thoroughbred, 75 Gidran, 109 Nonius, 97 Hungarian Sport Horse, 172 Hungarian Cold Blooded Horse and 20 Murinsulaner type adult brood mares in 28 studs were evaluated in Hungary. One way ANOVA was used to compare the genotypes. Some body measure indices were determined. Phenotypic correlation coefficients between the live weight and body measurements were estimated. Regression equations were developed to estimate the live weight from body measurements. Significant differences were found between the live weight and 21 body measurements of different genotypes. The rank of the investigated genotypes according to live weight was as follows: Hungarian Cold Blooded Horse (742.1 kg), Murinsulaner type (649.3 kg), Nonius (614.9 kg), Hungarian Sport Horse (600.9 kg), Gidran (563.4 kg) and Thoroughbred (542.0 kg). The results of girth measurements for the warm blooded breeds were similar to the data found in the literature. Considerable difference was found between the genotypes in body measure indices. The absolute and relative body size values prove clearly and objectively, that there are significant differences in the conformation of Thoroughbred, Gidran, Nonius, Hungarian Sport Horse, Hungarian Cold Blooded Horse and Murinsulaner type adult brood mares. The most close relationship with the live weight (r=0.89-0.92; P<0.01) was shown the body condition and nutritional status related measurements (heart girth, 2 nd width of rump). For the estimation of live weight with regression model the necessary data are as follows: hearth girth, 2 nd width of rump and length of body (R 2 =0.91; P<0.01).
Some environmental effects, population genetic parameters, breeding value of Limousin breeding bulls, also phenotypic and genetic trends in the age at first calving (AFC) of cows between 1992 and 2013 were estimated. Data were served by the Limousin and Blonde d'Aquitaine Breeders Association, in Hungary. The study was extended to three herds and 1157 cows. GLM method was used for the study of different effects, the BLUP animal model for estimation of population genetic parameters and breeding values (BV), and one-way linear regression analysis for trend calculations.The overall mean value of the AFC was estimated to be 34.7±0.4 months. The contribution of the evaluated factors to the phenotype was as follows: herd 73.51%, birth year of cow 13.02%, sire 6.74%, birth season of cow 1.62%. The heritability of AFC proved to be low (h 2 = 0.08±0.07 and h 2 = 0.01±0.04). There were relatively small differences in the estimated BV of the studied sires for the AFC. Based on the phenotypic trend calculation, the AFC of cows decreased by an average of 0.33 months per year, however no significant change was found in the genetic trend during the study period.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.