Performanse i senzorni kvalitet mesa brojlera hranjenih različitim nivoima ekstrudirane sačme uljane repice

In this paper the effect of extruded rapeseed meal on the performance and sensory quality of the breast meat of broilers was investigated. The experiments were performed with hybrid line ROSS 308. The control group was fed soybean meal, and two levels of extruded rapeseed meal were added in experimental groups, 4% and 8% during a period of 42 days. Final body masses of chicken in the experimental groups were lower for 1.79% and 3.05% than the control group. Conversion of feed was satisfactory in all groups, and the best in the control group. Including extruded rapeseed meal in the meal did not show negative effect on the sensory quality, the smell and the colour, of fresh breast meat. Sensory quality (smell, taste and sensitivity) of heat-treated breast meat of the chickens in the control and experimental groups was marked as 'very good', or optimal.U radu je ispitivan efekat ekstrudirane sačme uljane repice na proizvodne performanse i senzorni kvalitet mišića grudi brojlera. Ispitivanja su obavljena na pilićima hibridne linije ROSS 308. Kontrolna grupa je bila na bazi sojine sačme, a u oglednim grupama su korišćena dva nivoa ekstrudirane sačme uljane repice, 4% i 8% u periodu od 42 dana. Završne telesne mase pilića u eksperimentalnim grupama su bile nešto niže i zaostajale za kontrolnom grupom 1,79 % i 3,05%. Konverzija hrane je bila zadovoljavajuća u svim grupama, a najbolja u kontrolnoj grupi pilića. Uključivanje ekstrudirane sačme uljane repice u obrok nije ispoljilo negativan uticaj na senzorni kvalitet (miris, ukus i nežnost) toplotno obrađenih mišića grudi pilića kontrolne i eksperimentalnih grupa je ocenjen kao 'veoma dobar', odnosno optimalan

Različiti izvori i nivoi ulja u ishrani brojlera

The aim of this study was to investigate the effects of soybean, flax and rapeseed oil on productive performance and carcass quality of broilers chickens. At the beginning of the experiment six groups of 40 one day-old chicks, hybrid line Cobb 500 was formed, with five replications. For nutrition two feed mixtures were used. During the first two weeks, in preparation period, chickens were fed with starter mixture, and then with grower mixture until the end of the experiment. Control group was fed with mixture of standard composition and quality based on corn and soybean meal with the addition of 4% and 8% soybean oil, while the experimental group included 4% and 8% flaxseed oil and 4% and 8% rapeseed oil. The experiment lasted 35 days. During the experimental period, chickens were fed and watered ad libitum and microclimatic conditions were constantly monitored. Control of body weight and feed consumption was carried out every seven days. At the end of the experiment 10 chickens from each group were sacrificed for the purpose of testing the carcass quality. Upon completion of the experiment, control group achieved weight of 2122g and 2053g, and the experimental group with flax oil 2164g and 2094g, and the group with rapeseed oil weighs of 2121g and 2081g. Chickens on treatment with 4% flax oil in the diet achieved significantly higher body mass (P (lt) 0.05) at the end of the experiment compared with the groups who were on treatment with 8% rapeseed and soybean oil. Soybean oil at a rate of 4% showed significantly (P (lt) 0.05) increased final body weight compared to body mass of chicks in a group with the addition of 8% soybean oil. Feed conversion ratio was lowest in the group with the addition of 4% flax oil and rapeseed oil, and the highest in the group with the addition of 8% flax oil. The differences found in the carcass quality between the control and experimental groups were not statistically significant (P>0.05). The largest amount of abdominal fat (18.9 g) was in the group with the addition of 4% rapeseed oil and lowest in the group with the addition of 8% soybean oil (12.6 g). Based on these results it can be concluded that the addition of 4% oil showed better productive results, but had no effect on carcass quality of chickens.Cilj ovog rada je bio da se ispita efekat ulja soje, lana i uljane repice na proizvodne parametre i kvalitet trupa brojlera. Na početku ogleda formirano je šest grupa sa po 40 jednodnevnih pilića linijskog hibrida Cobb 500, u pet ponavljanja. Za ishranu su korišćene dve smeše. Tokom prve dve nedelje pripremnog perioda, za ishranu pilića je korišćena starter, a potom grover smeša do kraja eksperimenta. Kontrolna grupa je hranjena smešom standardnog sastava i kvaliteta na bazi sojine sačme i kukuruza sa dodatkom 4% i 8% ulja soje, dok je u eksperimentalnim grupama bilo uključeno 4% i 8% lanenog ulja, odnosno 4% i 8% ulja repice. Ogled je trajao 35 dana. U toku eksperimentalnog perioda piliću su hranjeni i napajani po volji, a mikroklimatski uslovi redovno kontrolisani. Kontrola telesne mase i utroška hrane je vršena svakih sedam dana. Na kraju eksperimenta žrtvovano je po 10 pilića iz svake grupe za potrebe ispitivanja kvaliteta trupa. Po završetku eksperimentalnog perioda, kontrolna grupa je ostvarila masu od 2122g i 2053g, a ogledne grupe sa uljem lana 2164g i 2094g, dok su grupe sa repičinim uljem ostvarile masu od 2121g i 2081g. Pilići na tretmanu sa 4% ulja lana u ishrani ostvarili su statistički značajno veću telesnu masu (P (lt) 0,05) na kraju eksperimenta u poređenju sa grupama koje su bile na tretmanu sa 8% ulja repice i soje. Ulje soje u količini od 4% je takođe statistički značajno (P (lt) 0,05) uticalo na povećanje završne telesne mase u poređenju sa telesnom masom pilića u grupi sa dodatkom 8% sojinog ulja. Konverzija hrane je bila najniža u grupi sa dodatkom 4% ulja lana i uljane repice, a najviša u grupi sa dodatkom 8% ulja lana. Utvrđene razlike u kvalitetu trupa između kontrolne i oglednih grupa nisu bile statistički značajne (P>0,05). Najveća količina abdominalne masti (18,9g) je u grupi sa dodatkom 4% ulja repice, a najmanja u grupi sa dodatkom 8% ulja soje (12,6g). Na osnovu dobijenih rezultata može se zaključiti da je dodatak 4% ulja ispoljio bolje prozvodne rezulate, ali nije uticao na kvalitet trupa pilića

Dietary medicinal plants enhance the chemical composition and quality of broiler chicken meat

ΔΕΝ ΔΙΑΤΙΘΕΤΑΙ ΠΕΡΙΛΗΨΗThe use of nutritional strategies to improve the quality of meat is a relatively new approach that has emerged at the interface of animal science and food science. The effects of dietary medicinal plants (Allium sativum L., Piper nigrum L., and Capsicum annuum L.) addition to chicken nutrition on quality characteristics of breast and thigh with drumstick meat, as well as caloric value of chicken meat were investigated. Quality measurements included meat sensory (colour, smell, taste, softness, chewiness, juiciness and overall impression), physical (pH, colour-CIE L*a*b* and drip-loss) and chemical (moisture, protein, fat and ash content) characteristics. Herbs showed significant (P < 0.05) influence in altering most examined quality parameters of chicken meat, especially when adding red hot pepper. Caloric value of chicken meat was improved which makes garlic, black pepper and hot red pepper valuable natural feed additives in improvement of meat quality as well as a natural growth promoter. In conclusion, herbs had positive influence on chicken meat quality, however the knowledge of their mode of action is still limited and thus requires further investigation

DIFFERENT SOURCES AND LEVELS OF VEGETABLE OILS IN BROILER CHICKEN NUTRITION

Abstract: The aim of this study was to investigate the effects of soybean, flax and rapeseed oil on productive performance and carcass quality of broilers chickens. At the beginning of the experiment six groups of 40 one day-old chicks, hybrid line Cobb 500 was formed, with five replications. For nutrition two feed mixtures were used. During the first two weeks, in preparation period, chickens were fed with starter mixture, and then with grower mixture until the end of the experiment. Control group was fed with mixture of standard composition and quality based on corn and soybean meal with the addition of 4% and 8% soybean oil, while the experimental group included 4% and 8% flaxseed oil and 4% and 8% rapeseed oil. The experiment lasted 35 days. During the experimental period, chickens were fed and watered ad libitum and microclimatic conditions were constantly monitored. Control of body weight and feed consumption was carried out every seven days. At the end of the experiment 10 chickens from each group were sacrificed for the purpose of testing the carcass quality. Upon completion of the experiment, control group achieved weight of 2122g and 2053g, and the experimental group with flax oil 2164g and 2094g, and the group with rapeseed oil weighs of 2121g and 2081g. Chickens on treatment with 4% flax oil in the diet achieved significantly higher body mass (P<0.05) at the end of the experiment compared with the groups who were on treatment with 8% rapeseed and soybean oil. Soybean oil at a rate of 4% showed significantly (P<0.05) increased final body weight compared to body mass of chicks in a group with the addition of 8% soybean oil. Feed conversion ratio was lowest in the group with the addition of 4% flax oil and rapeseed oil, and the highest in the group with the addition of 8% flax oil. The differences found in the carcass quality between the control and experimental groups were not statistically significant (P>0.05). The largest amount of abdominal fat (18.9 g) was in the group with the addition of 4% rapeseed oil and V.Ž. Stanaćev et al. 322 lowest in the group with the addition of 8% soybean oil (12.6 g). Based on these results it can be concluded that the addition of 4% oil showed better productive results, but had no effect on carcass quality of chickens

Effects of dietary soybean, flaxseed and rapeseed oil addition on broilers meat quality

The aim of this paper is was to investigate the effects of soybean oil, flax and rapeseed oil on the body weight, fatty acid composition of lipids and sensory characteristics of chicken breast meat. At the beginning, six groups with 40 one day old chicks Cobb 500 hybrid line, with five replications was formed. Chickens were fed with three mixtures of 21, 20 and 18% protein, respectively. The experiment lasted 42 days. The use of different types of oils in the diet did not exhibited statistically significant (P>0.05) differences in body weight of chickens. The control group achieved final body weight of 2704 g and 2695 g, and the experimental groups in a row 2735, 2645, 2735 and 2670g. The use of flax oil and rapeseed oil changes the fatty acid composition of lipids. Replacing rapeseed with soybean oil reduces the percentage of palmitic, stearic and linoleic acids, and increases the share of oleic and linolenic acids in the abdominal fat pad. The inclusion of flax oil in the diet of chickens in an amounts of 4% and 8% increase the amount of linoleic acid to 63% and 203%, which was statistically highly significant (P<0.01) difference compare to the control groups I and II, whereas the amount of linoleic acid is reduced by 14% and 33%. Dietary addition of vegetable oils in this experiment did not show any improvement of chicken breast meat sensory quality, but lipids of meat was improved with the higher levels of PUFAs which contributes to a higher quality of gained chicken meat

The importance of professional based questionnaire in the dog’s acute and chronic pain evaluation

The measurement of pain levels is made differently depending if acute or chronic pain is diagnosed, objective (e.g. cortisol, prolactin, serotonin, catecholamines, or the cardiac frequency and arterial pressure evaluation) or subjective methods being imagined. All subjective methods are including questionnaires and specific additional methods. The aim was the verifying the effectiveness of drug and physiotherapy combinations by using an owner based questionnaire for the chronic patients and a veterinary professional based questionnaire for the acute pain patient group. In this study a total of 20 dogs with observable pain were selected and two groups (n = 10 / group), constituted: G1 - chronic pain, and G2 - acute pain. The treatment of dogs with acute signs of pain was made oral or injectable with NSAIDs administration and for dogs with signs of chronic pain, physiotherapy treatment and drug therapy was administered. The owners of the dogs with chronic pain received the HCPI questionnaire in order to evaluate their dog’s pain level subjectively. For the dogs with acute pain the veterinarian filled out the short form of Glasgow Composite Measure Pain Scale (CMPS-SF). After initiating a Paired t-test in Excel 2010 with the scores obtained with HCPI and CMPS-SF, there was observed a significant reduction of pain after associated drug administration and physiotherapy and no significant evidence of acute pain after drug therapy. The used physiotherapy and drug combinations delivered a significant reduction of chronic pain, both clinically and visually mirrored in score reduction after treatments. The HCPI questionnaire could be considered a valuable tool for evaluating chronic pain in patients in the clinic environment. The CMPS-SF has also proven to be a very useful questionnaire in diagnose of acute pain and evaluation of the effectiveness of drug therapy used