N e d e l j k a N i k o l o va, Z l a t i c a P a vl o vs k i , N . M i l o š e vi ü , L i d i j ... more N e d e l j k a N i k o l o va, Z l a t i c a P a vl o vs k i , N . M i l o š e vi ü , L i d i j a P e r i ü Izvorni znanstveni þlanak Primljeno: 18. travnja 2008. SAŽETAK Ocjenjivanje kakvoüe brojlerskih trupova sprovedeno je na ukupno 240 piliüa dva genotipa Cobb 500 i Hubbard Classic tovljenih do 49 dana. Korištene su dvije razliþite energetsko-proteinske krmne smjese, a cilj istraživanja je bio utvrditi utjecaj genotipa, spola i hranidbe na kakvoüu brojlerskih trupova (masa trupa, randman, mase i udjeli osnovnih dijelova trupa), njihove varijance i interakcija. Utvrÿen je statistiþki znaþajan (P<0,05) utjecaj spola na masu trupa piliüa, naime muški piliüi imali su znaþajno veüu masu trupova u svim obradama. Kod piliüa genotipa Cobb 500 i kod piliüa hranjenim krmnom smjesom u sustavu I pojavile su se neznaþajno veüe vrijednosti mase trupova (P>0,05). Kod ocjenjivanja randmana statistiþki znaþajan (P<0,05) utjecaj imao je samo genotip i to jedino kod obrade " priprem...
The evaluation of carcass quality of broiler chickens is a very important segment in production, ... more The evaluation of carcass quality of broiler chickens is a very important segment in production, manufacture and marketing of poultry products, which depends of many factors. The aim of this experiment was to determine some criterions of carcass quality (carcass mass, dressing percentage and their variances) of fattening chickens in dependence on the following factors: hybrid, sex, age and mixture composition. Forty male and forty female chickens of two hybrid lines Cobb 500 and Hubbard Classic at the fifth, sixth and seventh weeks of age were selected for slaughter by the random selection method. Chickens were fed with two different mixtures which contented different level of protein and energy and different values of the E : P rate. The dressing percentage was represented by three kinds of dressings: basic or traditional dressing, “ready for roasting” and “ready for grilling”. The obtained results showed statistically significant (P < 0.05) influence of age and sex on the carca...
The aim of this work is to examine the influence of various systems of diet on production paramet... more The aim of this work is to examine the influence of various systems of diet on production parameters of broilers from two different genotypes. The examination was done in a production farm for intensive fattening of broilers in R. Macedonia. Broilers from genotype Hubbard Classic and Cobb 500, 2400 one-day chickens all together sorted out in 16 separated and marked boxes have been used as a material. In each box were put 150 chickens, which contained four different treatments (two different hybrids x two diets) and four repetitions in one turns. Starter mixture was used during I-II weeks, grower for III weeks, then finisher 1 from IV-VI week, and finisher 2 for VII weeks of broilers fattening. Chemical structure of the first mixture (diet 1) had higher level of energy and proportion E:P, while the second mixture had higher level of proteins and lower values of proportion E:P. During the fattening the production parameters of the examining chickens: body mass, daily gain, feed consum...
The aim of this paper was to examine the influence of sex, age and nutrition system on mass and y... more The aim of this paper was to examine the influence of sex, age and nutrition system on mass and yield of major parts in broiler chicken carcass from different genotypes. Research material was one-day chicken of Hubbard Classic and Cobb 500 genotypes fattened 49 days in production conditions. The chicken used two nutrition systems. The first nutrition system had higher level of energy and E : P ratio, while the second had higher level of proteins and lower values of E : P ratio in all phase of nutrition. Chicken were separated by sex, and by method of random selection were selected and slaughtered 40 male and 40 female chicken (total 240) in 35t h , 42 nd and 49 th day of age. Major parts of carcass (breasts, thighs and drumsticks) were separated and was calculated their mass, yield and variance. The computer program STATISTICA 6 statistically processed all dates. Differences in mass and yield of breasts, thighs and drumstick were statistically significant (P<0.05) at chicken with...
Spices, herbs and medicinal plants as a feed supplements present promising alternatives to antibi... more Spices, herbs and medicinal plants as a feed supplements present promising alternatives to antibiotic growth promoters due to their high content of bioactive substances. A large number of experiments have confirmed a wide range of activities of spices in poultry nutrition such as stimulation of feed intake, antimicrobial, antioxidative and coccidiostat stimulation, increase of body weight gain, lowering the mortality rate and improvement of the blood and tissue lipid profile. The present paper gives a review on the characteristics of hot red pepper and its mode of action in broilers nutrition.
The experiment was conducted to evaluate the influence of strain and age on some egg quality para... more The experiment was conducted to evaluate the influence of strain and age on some egg quality parameters (egg weight and egg shell strength) of commercial laying hens. Layers of lines ISA Brown and DeKalb White were examined in period of nine months. Both lines were at same age (28 weeks) and were confined in common facility in battery cages. Laying hens were reared and fed according to standard breeding technology. Once a month 25 eggs of each line were taken to be examined for eggshell strength and egg weight, or in other words, total 450 table eggs were tested. Analises were done in Laboratory for testing egg quality by gaudges Egg Multi Tester EMT 5200 and Egg shell Gauge (Robotmation Co. Ltd., Tokyo, Japan) which have computerised equipment to examine quality and physical characteristics of eggs. Statistic analyses on results were done by computer sub-programme ANOVA and Fisher's LSD test to determine the level of statistical significant difference between examined factors. ...
The production of beef meat is a widely spread in Republic of Macedonia, and the beef is very abu... more The production of beef meat is a widely spread in Republic of Macedonia, and the beef is very abundant with binding tissue that influences certain hardness and tenacity both to the meat and the final meat product, thus diminishing its organoleptic quality. That demands for seeking adequate methods to improve the consistency and succulence of meat. For that purpose, were used a proteolytic enzyme preparations derived from the bacteria Streptomyces species 82 which have a high proteolytic activity. In this study was determined increased solubility of myofibril proteins at the meat (Muscles supraspinatus) and beef hearts when treated with enzyme preparations. Both Muscles supraspinatus and beef hearts showed a general tendency to increase the quantity of free amino acids when an enzyme preparation with activity of 110 PU/kg was added.
Cobb 500 and Hubbard Classic broiler chicks were reared on the floor during seven weeks of fatten... more Cobb 500 and Hubbard Classic broiler chicks were reared on the floor during seven weeks of fattening. Chicks, of each strain, were divided in two groups (160 chicks in group) and feed with two isocaloric diets differed in protein levels. The contents of crude protein in the diets 1, were 23 % (1-2 weeks of age), 22 % (3. week), 21 % (4 - 6 weeks), 18 % (7. week) and in the diets 2 were 22 % (1 - 2 weeks), 21 % (3. week), 20 % (4 - 6 weeks) and 17 % (7. week of age). At days 35, 42 and 49, 10 male and 10 female chicks were sacrificed from both strain and both group. The right tibiae were removed and prepared for analysis. Bone breaking force were determined by three-point-bending test at the midlength. Geometrical properties were obtained by measuring of outside and inside antero-posterior and lateromedial diameters, at the middiaphyseal transverse section of each tibia. These data were used to calculated of bones cross sectional cortical area and cross sectional medullar area. The o...
This research was conducted with aim to establish genotype influence on eggshell strength of fert... more This research was conducted with aim to establish genotype influence on eggshell strength of fertilized eggs and its hatchability at parents stock flock of laying type. Eggs from parent?s flock of lines ISA Brown and DeKalb White at age of 36-60 weeks were examined. Experiment lasted 6 months, and once a month were examined samples of 30 fertilized eggs. Results have shown significant differences (P ? 0.05) in eggshell strength related to genotype influence. Eggs with brown eggshell from line ISA Brown (P ? 0.05) had significantly more strength eggshell compared to eggs with white eggshells from line DeKalb White. Results from the analyses of breeding eggs hatchability, examined in the mentioned period have shown that this variable was mainly influenced by age, then by genotype. Eggs of older birds were lower hatchability compared to fertilized eggs produced of younger parent stock flock during the examination period.
N e d e l j k a N i k o l o va, Z l a t i c a P a vl o vs k i , N . M i l o š e vi ü , L i d i j ... more N e d e l j k a N i k o l o va, Z l a t i c a P a vl o vs k i , N . M i l o š e vi ü , L i d i j a P e r i ü Izvorni znanstveni þlanak Primljeno: 18. travnja 2008. SAŽETAK Ocjenjivanje kakvoüe brojlerskih trupova sprovedeno je na ukupno 240 piliüa dva genotipa Cobb 500 i Hubbard Classic tovljenih do 49 dana. Korištene su dvije razliþite energetsko-proteinske krmne smjese, a cilj istraživanja je bio utvrditi utjecaj genotipa, spola i hranidbe na kakvoüu brojlerskih trupova (masa trupa, randman, mase i udjeli osnovnih dijelova trupa), njihove varijance i interakcija. Utvrÿen je statistiþki znaþajan (P<0,05) utjecaj spola na masu trupa piliüa, naime muški piliüi imali su znaþajno veüu masu trupova u svim obradama. Kod piliüa genotipa Cobb 500 i kod piliüa hranjenim krmnom smjesom u sustavu I pojavile su se neznaþajno veüe vrijednosti mase trupova (P>0,05). Kod ocjenjivanja randmana statistiþki znaþajan (P<0,05) utjecaj imao je samo genotip i to jedino kod obrade " priprem...
The evaluation of carcass quality of broiler chickens is a very important segment in production, ... more The evaluation of carcass quality of broiler chickens is a very important segment in production, manufacture and marketing of poultry products, which depends of many factors. The aim of this experiment was to determine some criterions of carcass quality (carcass mass, dressing percentage and their variances) of fattening chickens in dependence on the following factors: hybrid, sex, age and mixture composition. Forty male and forty female chickens of two hybrid lines Cobb 500 and Hubbard Classic at the fifth, sixth and seventh weeks of age were selected for slaughter by the random selection method. Chickens were fed with two different mixtures which contented different level of protein and energy and different values of the E : P rate. The dressing percentage was represented by three kinds of dressings: basic or traditional dressing, “ready for roasting” and “ready for grilling”. The obtained results showed statistically significant (P < 0.05) influence of age and sex on the carca...
The aim of this work is to examine the influence of various systems of diet on production paramet... more The aim of this work is to examine the influence of various systems of diet on production parameters of broilers from two different genotypes. The examination was done in a production farm for intensive fattening of broilers in R. Macedonia. Broilers from genotype Hubbard Classic and Cobb 500, 2400 one-day chickens all together sorted out in 16 separated and marked boxes have been used as a material. In each box were put 150 chickens, which contained four different treatments (two different hybrids x two diets) and four repetitions in one turns. Starter mixture was used during I-II weeks, grower for III weeks, then finisher 1 from IV-VI week, and finisher 2 for VII weeks of broilers fattening. Chemical structure of the first mixture (diet 1) had higher level of energy and proportion E:P, while the second mixture had higher level of proteins and lower values of proportion E:P. During the fattening the production parameters of the examining chickens: body mass, daily gain, feed consum...
The aim of this paper was to examine the influence of sex, age and nutrition system on mass and y... more The aim of this paper was to examine the influence of sex, age and nutrition system on mass and yield of major parts in broiler chicken carcass from different genotypes. Research material was one-day chicken of Hubbard Classic and Cobb 500 genotypes fattened 49 days in production conditions. The chicken used two nutrition systems. The first nutrition system had higher level of energy and E : P ratio, while the second had higher level of proteins and lower values of E : P ratio in all phase of nutrition. Chicken were separated by sex, and by method of random selection were selected and slaughtered 40 male and 40 female chicken (total 240) in 35t h , 42 nd and 49 th day of age. Major parts of carcass (breasts, thighs and drumsticks) were separated and was calculated their mass, yield and variance. The computer program STATISTICA 6 statistically processed all dates. Differences in mass and yield of breasts, thighs and drumstick were statistically significant (P<0.05) at chicken with...
Spices, herbs and medicinal plants as a feed supplements present promising alternatives to antibi... more Spices, herbs and medicinal plants as a feed supplements present promising alternatives to antibiotic growth promoters due to their high content of bioactive substances. A large number of experiments have confirmed a wide range of activities of spices in poultry nutrition such as stimulation of feed intake, antimicrobial, antioxidative and coccidiostat stimulation, increase of body weight gain, lowering the mortality rate and improvement of the blood and tissue lipid profile. The present paper gives a review on the characteristics of hot red pepper and its mode of action in broilers nutrition.
The experiment was conducted to evaluate the influence of strain and age on some egg quality para... more The experiment was conducted to evaluate the influence of strain and age on some egg quality parameters (egg weight and egg shell strength) of commercial laying hens. Layers of lines ISA Brown and DeKalb White were examined in period of nine months. Both lines were at same age (28 weeks) and were confined in common facility in battery cages. Laying hens were reared and fed according to standard breeding technology. Once a month 25 eggs of each line were taken to be examined for eggshell strength and egg weight, or in other words, total 450 table eggs were tested. Analises were done in Laboratory for testing egg quality by gaudges Egg Multi Tester EMT 5200 and Egg shell Gauge (Robotmation Co. Ltd., Tokyo, Japan) which have computerised equipment to examine quality and physical characteristics of eggs. Statistic analyses on results were done by computer sub-programme ANOVA and Fisher's LSD test to determine the level of statistical significant difference between examined factors. ...
The production of beef meat is a widely spread in Republic of Macedonia, and the beef is very abu... more The production of beef meat is a widely spread in Republic of Macedonia, and the beef is very abundant with binding tissue that influences certain hardness and tenacity both to the meat and the final meat product, thus diminishing its organoleptic quality. That demands for seeking adequate methods to improve the consistency and succulence of meat. For that purpose, were used a proteolytic enzyme preparations derived from the bacteria Streptomyces species 82 which have a high proteolytic activity. In this study was determined increased solubility of myofibril proteins at the meat (Muscles supraspinatus) and beef hearts when treated with enzyme preparations. Both Muscles supraspinatus and beef hearts showed a general tendency to increase the quantity of free amino acids when an enzyme preparation with activity of 110 PU/kg was added.
Cobb 500 and Hubbard Classic broiler chicks were reared on the floor during seven weeks of fatten... more Cobb 500 and Hubbard Classic broiler chicks were reared on the floor during seven weeks of fattening. Chicks, of each strain, were divided in two groups (160 chicks in group) and feed with two isocaloric diets differed in protein levels. The contents of crude protein in the diets 1, were 23 % (1-2 weeks of age), 22 % (3. week), 21 % (4 - 6 weeks), 18 % (7. week) and in the diets 2 were 22 % (1 - 2 weeks), 21 % (3. week), 20 % (4 - 6 weeks) and 17 % (7. week of age). At days 35, 42 and 49, 10 male and 10 female chicks were sacrificed from both strain and both group. The right tibiae were removed and prepared for analysis. Bone breaking force were determined by three-point-bending test at the midlength. Geometrical properties were obtained by measuring of outside and inside antero-posterior and lateromedial diameters, at the middiaphyseal transverse section of each tibia. These data were used to calculated of bones cross sectional cortical area and cross sectional medullar area. The o...
This research was conducted with aim to establish genotype influence on eggshell strength of fert... more This research was conducted with aim to establish genotype influence on eggshell strength of fertilized eggs and its hatchability at parents stock flock of laying type. Eggs from parent?s flock of lines ISA Brown and DeKalb White at age of 36-60 weeks were examined. Experiment lasted 6 months, and once a month were examined samples of 30 fertilized eggs. Results have shown significant differences (P ? 0.05) in eggshell strength related to genotype influence. Eggs with brown eggshell from line ISA Brown (P ? 0.05) had significantly more strength eggshell compared to eggs with white eggshells from line DeKalb White. Results from the analyses of breeding eggs hatchability, examined in the mentioned period have shown that this variable was mainly influenced by age, then by genotype. Eggs of older birds were lower hatchability compared to fertilized eggs produced of younger parent stock flock during the examination period.
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