Influence of the Application of Organic Selenium in Duck Concentrate Mixtures on the Sensory Properties of Duck Meat

There are data in the literature on the influence of higher amounts of organic selenium on production results, and the obtained results indicate that high levels of organic selenium added to feed (even up to 15 mg / kg) of chickens did not have a negative effect on production results. Also, in the literature related to chicken nutrition there is data on the use of different forms (inorganic, organic) and different amounts of selenium on carcass meat, pH value of meat, ability to bind water, chemical parameters of meat quality, oxidative stability of meat, and and on the sensory properties of broiler meat. Of particular importance are the studies of the possibility of using increased amounts of organic selenium in poultry nutrition in order to enrich meat with selenium. This is of particular importance for the nutritional value of meat, and in connection with this, human health. The aim of this study was to investigate the effect of adding different amounts of organic selenium (ALKOSEL® R397) in concentrate mixtures on the sensory properties of meat streams. View Article DOI: 10.47856/ijaast.2021.v08i8.01

Comparative exterior measures of pramenka sheep raised in three localities in Bosnia and Herzegovina

The aim of the research was to measure the basic external characteristics of Pramenka sheep (ridge height, from the ground to the highest ridge point, lower back height, from the ground to the highest lower back point, hull lenght, chest width, chest depth, chest circumference, hull circumference, shin circumference, body weight) with the aim of comparing the measured values in order to asses the impact of breeding areas on them. Domestic kind Pramenka (Kupres strain, Vlašić strain) were used in this research. There were 36 sheeps in the experimental group, and the same number in the control group. Experimets were performed on long-term  purebred herds of Pramenka on three private farms in the Una-Sana Canton, 2 municipilities of Cazin, 1 municipality of Bihać, as well as on one private farm in Central Bosnia (area of the municipality of Travnik), and one in the municipality of Kupres (Livno Canton). Based on the presented average values of the external properties of Pramenka sheep and their variations for all examined localities, we can conclude the following: that the sheep are longer in relation to their height and that the Pramenka is of medium physical development, that the differences in body measures in the examined areas are greatly influenced by the origin of certain breeds of Pramenka sheep (Kupres strain, Vlašić strain), as well as the quality of pastures and unequal access to food. By comparing our results with the results of other authors who examined the exterior of other strains of Pramenka (from region in Croatia: Rab, Lika, Pag, Istria) in our wider enviroment concluded that Vlašić Pramenka is the largest strain of Pramenka in this area

Buckwheat in the nutrition of cock laying as a factor of egg quality

The subject of this paper is the research of the influence of different ratios of buckwheat, in concentrated feed, on the qualitative values of laying hen eggs. The study was conducted in four groups of laying hens: one control and three experimental, which were formed with respect to different proportions of buckwheat in meals. Within the first group of laying hens, a concentrated feed mixture with 10% relative share of buckwheat was used, within the second group with 20% relative share of buckwheat and within the third group with 30% relative share of buckwheat, while in the control group standard concentrated food was used. Based on the conducted research, it can be concluded that buckwheat in the meal of laying hens has positive effects on quality, physical properties, sensory properties and frequency of carrying. It was shown that there are statistically significant differences in mean values ​​for the following variables: protein content in egg white, protein content in egg yolk (%), fat content in egg yolk (%), where the highest value was recorded in the third group of laying hens. Also, statistically significant differences were found in terms of shell weight (g), shell thickness (mm), yolk diameter (mm) and egg white pH. The highest average frequency of egg laying was found in the first group and the lowest average frequency of egg laying was in the control group. The general conclusion is that buckwheat can be used in poultry feed, because it has a much greater positive than negative effect on the production and quality characteristics of eggs for consumption

Protection and Animal Welfare in Farming Practices for Milk Production in Region of Northeastern Bosnia and Herzegovina

The main goal of the research is to determine the conditions of welfare and housing of farm animals for milk production. Milk producers in the region of northeastern BiH are not informed enough about the protection and welfare of animals. This research was conducted in May 2012. The results were obtained on the basis of the questionnaire methodology in five freedoms in the welfare and accommodation of animals (Webster, 1987). Farms are divided into three groups, farms that have up to 5 dairy cows (they are in majority in the region), farms that have up to 20 dairy cows and farms with more than 20 dairy cows. On farms that have up to 5 dairy cows all farms posses tied system of keeping cows and cows are kept in closed conditions. Farms with up to 20 dairy cows also a large percentage of 67% related to the system of keeping cows in indoor conditions. A smaller part of the farm has a free system of keeping cows and stables open with good light and ventilation. Only 16% of farms with more than 20 dairy cows are tied housing system and the rest of the free system of keeping cows. All farms meet freedom from hunger and thirst, but the big problem is freedom from discomfort, freedom from stress and fear, freedom of injury and illness and the freedom to express natural behavior. The research was carried out within the project "Improvement of milk production in northeastern Bosnia and Herzegovina" funded by the Development Agency of the Czech Republic

IMPACT OF HYBRIDS OF FATTENED CHICKENS ON SLAUGHTER INDICATORS AND CHEMICAL COMPOSITION OF MEAT

Zbog povoljnog kemijskog sastava pilećeg mesa (nizak sadržaja masti a veliki udio visokovrijednih proteina) i zbog njegove pogodnosti za suvremenu prehranu ljudi, na tržištu se sve više traže dijelovi pilećeg trupa. Stoga se naglasak u proizvodnji pilećeg mesa stavlja na kvalitetu i odnos osnovnih dijelova trupa (prsa i file bez kostiju, batak i zabatak). Na području Bosne i Hercegovine za proizvodnju pilećeg mesa koriste se mnogobrojni komercijalni hibridi (brojleri) među kojima su najzastupljeniji Cobb 500, Hybro PG i Ross 308. Svaki od navedenih hibrida ima različite proizvodne performanse. Primarni cilj ovog rada je istraživanje performansi hibrida tovnih pilića (Cobb 500, Hybro PG i Ross 308) pri određenim uvjetima tova, klaoničkih pokazatelja i utvrđivanje kemijskog sastava mesa kao jednog od čimbenika kvalitete pilećeg mesa. U toku istraživanja utvrđeni su sljedeći proizvodni pokazatelji: konverzije hrane, tjelesne mase pokusnih pilića na farmi, kalo transporta, mase nejestivih i jestivih dijelova kamo pripadaju trup i iznutrice, kalo hlađenja, i mase dobivenog \u27\u27grill\u27\u27 mesa. Kemijska analiza pilećeg mesa obuhvatila je određivanje sadržaja suhe tvari, proteina, masti, pepela, i vode na uzorcima bijelog i crvenog mesa sva tri ispitivana hibrida. Svi rezultati dobiveni u toku istraživanja su statistički obrađeni. Statističkom analizom rezultata istraživanja utvrđeno je da hibrid Ross 308 ima povoljnije nutritivne karakteristike, najveći sadržaj proteina (p<0,05), a najmanji sadržaj masti (p<0,05) u odnosu na hibride Cobb 500 i Hybro PG. Kod analize klaoničkih pokazatelja, rezultati su pokazali da Hybro PG ima najveću vrijednost tjelesne mase pred klanje, kao i najveću vrijednost mase \u27\u27grill\u27\u27 mesa.Because of its favourable chemical composition that is due to the low fat content, and high percentage of high-quality protein, and the benefits of chicken meat for modern human nutrition, on the market increasingly are popular chicken carcass parts. So the emphasis in the production of chicken meat is placed on quality and yield of the basic parts of the body (breast and boneless fillets, thighs and drumsticks). In Bosnia and Herzegovina in the production of chicken meat many commercial hybrids (broilers) are used, predominately Cobb 500, Hybro PG and Ross 308. Each of these hybrids has different production performance. The primary objective of this paper is to study the performance of hybrids (Cobb 500, Hybro PG and Ross 308) under certain conditions of fattening, slaughter parameters and chemical composition as a factor in meat quality. During the research and analysis of the results of the experiment the following values were set: feed conversion, weight of sample chickens on the farm, transport outage, mass non-edible parts, the mass of edible parts where they belong: chicken carcass, offal, chilling outage, and “grill” meat. Chemical analysis of chicken meat included the determination of dry matter, protein, fat, ash, and water of samples from the white and red meat of all three hybrids. All the results obtained during the study were statistically analyzed. Statistical analysis of results showed that the hybrid Ross 308 had a favourable nutritional characteristics, the highest protein content (p<0,05) and the lowest fat content (p<0,05) compared to hybrids Cobb 500 and Hybro PG. When analyzing slaughter indicators, the results showed that Hybro PG had the highest value of body weight before slaughter, and the highest value of the mass grill meat

Control of Corn Silage Quality on Farms for Milk Production in Northern Bosnia and Herzegovina

The research objective was to monitor and compare the quality of corn silage on farms in the period 2008 - 2012 by years of the research. The analysis of corn silage was done at 65 farms in the northern part of Bosnia and Herzegovina, where is the largest production of raw milk - about 85 % of total production in Bosnia and Herzegovina. The medium value of crude protein (CP) per years of the research is 6.94 % in 2008; 6.82 % in 2010 and 6.31 % in 2012. The acidity (pH), the medium value per years of the research is 3.81 in 2008; 4.03 in 2010 and 4.01 in 2012. The medium value of crude cellulose (SC) per years of the research is 31.69 % in 2008; 31.9 % in 2010 and 33.99 %  in 2012. The moisture con­tent (SV), the medium value per years of the research is 68.48 % in 2008; 68.75 %  in 2010 and finally, 68.43 % in 2012