The aim of the study was to evaluate relationship between eggshell color parameters and its mineral composition as well internal quality eggs derived from various breeds hens, varied by color: seledine Araucana, brown Marans, white Leghorn. sample consisted 180 (60/group) measured using CIE L*a*b* system. evaluation included traits whole egg (weight, specific gravity, proportions elements, shape index), yolk color, index, pH), albumen height, shell (color, strength, weight, thickness,...

Due to the fluctuating nature of poultry market, including need for chicks, there is often a necessity extend storage time hatching eggs. Commonly they are stored at farm reduce cost daily collection, while hatcheries collect large number eggs fill entire incubator once. In case hen eggs, three seven days usually used incubation. quail no specific recommendations in this respect, common perception that "age" differently from and stay fresh longer. The study was aimed determine maximum after...

The aim of the study was to determine daily changes in some egg quality parameters, indirectly reflecting freshness, and assess possibility predicting time from laying using mathematical methods. material consisted 365 table eggs medium (M, ≥53 g <63 g) large (L, ≥63 <73 weight classes (commercial stock, cage system, brown-shelled eggs) collected on same day. Eggs were numbered individually placed transport trays stored (14 °C, 70% RH). Every day, for 35 days, characteristics analyzed (10...

The aim of the experiment was to evaluate potential use citric acid as a modifier quality changes in table eggs during their storage. About 780 hen were collected on same day. They numbered individually and placed trays 30 pcs each. Control group (CA0) consisted unmodified with any additional substances. In experimental groups CA10 CA15, eggshells sprayed aqueous solution (10 15% concentration, respectively). At start experiment, only traits from control analyzed. remaining stored at 14°C...

The aim of the study was to evaluate possibility reducing changes in quality consumer hen eggs by storing them various package type and under temperature conditions (room refrigeration). material consisted 960 chicken packed cardboard or plastic boxes, 10 pcs each. Half packages were stored at room (21 °C), rest refrigerator (5 °C). for 28 days qualitatively evaluated 14-day intervals. characteristics whole egg (weight, specific weight, proportion morphological elements, air cell depth) as...

The most popular protein source in poultry feed mixtures is soybean. However, cheaper and more available alternative sources are being sought, manufacturers often turn their attention to the post-extraction meals of local oil plants, e.g., rapeseed. Therefore, effect fermented non-fermented rapeseed meal used as a additive for Japanese quails was investigated on eggs' quality. study performed 280 females fed with mixture without meal, (5%, 10% 15%) one 15%). During experiment, eggs were...

During the storage irreversible changes occur in eggs that result a deterioration of their quality. The most significant affect albumen. One major proteins albumen present egg white is lysozyme, which protects embryo from microorganisms. This enzyme also contributes to qualitative characteristics It possible its polymorphism affects quality and stability obtained raw material is, table eggs. Therefore, aim this study was assess potential effect lysozyme gene protein on during derived 2...

The aim of the study was to evaluate genetic correlations between behavioural profile and performance in laying hens as an indirect answer question whether observed responses are associated with increased levels stress these birds.The assessment birds' temperament carried out using novel objects test. test conducted two successive generations comprising 9,483 Rhode Island White (RIW) birds (approx. 4,700 individuals per generation) 4,326 Red (RIR) 2,100 generation). Based on recorded...

Virtual fencing is an innovative alternative to conventional fences. Different systems have been studied, including electric-impulse-free systems. We tested the potential of self-applied acoustic stimulus in deterring horses from further movement. Thirty warmblood were individually introduced a designated corridor leading toward food reward (variant F) or familiar horse S). As subject reached distance 30, 15 5 m finish line, acute alarming sound was played. Generally, sudden and unknown...

Abstract The purpose of the study was to determine whether type use, age and gender Małopolski horses affect level selected haematological biochemical parameters their blood there is an interaction between these factors. research carried out on 30 breed, which were divided according (18 mares 12 stallions), (2–6 years, 7–9 years 10–16 years) use (recreational vs. sport). To sum up, significantly affects erythrocyte indices, as evidenced by higher values in stallions compared mares, well...

The aim of the study was to select traits that may constitute a prospective criterion for breeding value prediction young horses. results 1,232 starts 894 four-, five-, six-, and seven-year-old horses, obtained during jumping championships horses which had not been evaluated in, alternative championships, training centres were analyed. Nine chosen those recorded: ranking in championship, elimination (y/n), conformation, rating style on day one, two, three, penalty points three championship....

Abstract The study was carried out on milk from cold-blooded Sokólski mares and warm-blooded Polish Halfbred mares. Milk samples were analysed for content of solids, protein, fat, lactose, ash; density; energy value; percentage α-lactalbumin (α-La), β-lactoglobulin (β-Lg), serum albumin (SA), immunoglobulin (Ig), lactoferrin (Lf) lysozyme (Lz) in the total protein; fatty acid profile. found to be similar protein fat that mares, but had higher including lactose ash. It also significantly...

The aim of the study was to assess cognitive abilities horses in recognizing humans by sight and smell. Two experiments were performed. In first experiment, behaviour exposed a visual stimulus (photographs familiar unfamiliar people) observed. second experiment examined their evoked an olfactory stimulus. following variables assessed: duration approach object seconds (s), interest object, negative reaction, observation looking with left eye right other signs interest, e.g. licking, grasping...

The aim of the study was to characterize population structure and assess genetic diversity warmblood horses used in show jumping discipline. Pedigree data 1,048 participating Polish Championships for Young Horses were analyzed. pedigree these animals included 12 863 individuals. consisted analysis characterization homozygosity population. It found that completeness depth sufficient reliable assessment analyzed Although average inbreeding coefficient exhibited at an acceptable level (approx....

Abstract The scientific objective of the paper was to compare use value native and some foreign horse breeds competing in Polish regional show jumping tournaments. A total 156 horses were analysed including Małopolski (m), Wielkopolski (wlkp), Half Bred Horse (pksp), Oldenburger (old), Holsteiner (hol) Dutch Warmblood (kwpn). competition results with distribution penalty points as well pedigree databases Breeders Association Equestrian Federation used. data obtained subjected analysis...

The aim of this study was to evaluate the saliva cortisol levelsof recreational horses dependent on type horse activity. A total 68 were included in experiment and divided into groups according activity, horse, age, term collection, sex. Saliva samples obtained from each at 3 measurement points: morning (6 a.m.), evening p.m.), immediately after work. overall analysis shows that sample age influence concentration. diurnal concentration does not differ between types mares geldings. However,...

The aim of the study was to estimate direct additive genetic effect and maternal on level traits estimated during Polish Jumping Championships for Young Horses. investigations involved 541 stallions 353 mares, which in total started 1232 times. Variance covariance components were using Gibbs sampling method. Heritability (h2) repeatability (r2) coefficients as well effects (m2) calculated 7 sports performance traits. There an effect, ranging from 0.11 0.39, assessed based achieved scores....

Abstract The aim of the work was preliminary evaluation predispositions Polish racehorses to sports. tests covered 273 horses taking part in CC class and CC1 competitions finals big tour. probability achieving best result depending on horse breed evaluated using multivariate analysis variance. With use Spearman’s rank correlations, initial correspondence between horse’s breeders’ ranking based sport results defined. It stated that starting Grand Prix represented only 6.85% all registered...

Abstract Genetic improvement of show jumping horses is problematic, given the multitude physical traits that determine sport usability and specific mental predispositions required during training competitions. The Polish Championships for Young Horses (PCYH) provide an opportunity to evaluate in horses, which, however, not a basis evaluation breeding value. aim study was propose model value taking part Championships. In total, 1232 starts 894 4-, 5-, 6-, 7-year-old were analysed. Indices...

�Summary. The population of Malopolski horse breeding in Lublin region between 1976 and 2008 has been analyzed the study. recorded changes were characterized aspect events that had considerable effects. A gradual decrease heads was observed, which split up only by short-term increases, while both political, social, reorganization did not result any positive changes. temporary increase breed attributed to appearance Polish noble half-bred (pksp) as well including into a program genetic...

This study aimed to perform a comparative analysis of the horses' heart rate parameters and locomotor activity in herd or isolation, with without company goats. Twenty horses were tested paddock, accompanied (or not) by three The experiment comprised four tests (a control test goats, horse isolation goats an isolated goats). horse's behavior, HR, RR, rMSSD, LF, HF, LF/HF recorded. data included 15-min rest, procedural recovery HR/HRV periods, 5-min period at beginning test. duration standing...

The aim of the study was to evaluate emotional reactivity hens with use physical parameters such as movement velocity and position selected parts body analysed by computer software - Tracker®. 200 Rhode Island White kept individually in a laying hen breeding farm were used study. analysis behaviour performed Novel Object Test. Afterwards video clips determine behavioural Tracker® two control points: upper part head peak tail. results suggest that it is possible for evaluation profile this...