scholarly journals The effect of yellow mealworm larvae meal supplementation in broiler diets on meat quality

2021 ◽  
Vol 90 (3) ◽  
pp. 349-356
Author(s):  
Ondřej Šťastník ◽  
Jakub Novotný ◽  
Andrea Roztočilová ◽  
Miroslav Jůzl ◽  
Markéta Piechowiczová ◽  
...  

The aim of this study was to evaluate the effect of Tenebrio molitor larvae meal supplementation in chicken diets on the chemical composition and sensory quality of meat. The experiment was conducted on 120 Ross 308 male broilers from day 12 to day 38 of their age. Broilers were divided into three equal groups with 5 replicates per treatment. The two experimental groups received feed mixtures containing 2% (TM2; n = 40) and 5% (TM5; n = 40), respectively of yellow mealworm (Tenebrio molitor L.) meal. The third group (TM0; n = 40) was control, receiving 0% of mealworms in diet. The addition of mealworm meal to diets in this trial do not worsen the chemical composition or sensory characteristics of the thigh meat of broilers. The control chickens had a higher live weight (P < 0.05) compared to the experimental groups at the end of the trial. The lowest live weight and feed intake was determined in group TM2 (P < 0.05). The highest feed intake (P < 0.05) was found in the control group. The breast meat from the control group was rated better (P < 0.05) in flavour compared to the groups receiving 2% and 5% of yellow mealworms. The primary requirement for the use of any ingredient in feed is that it does not adversely affect food safety and quality. In our study, the inclusion of 2% and 5% mealworm meal in the broiler’s diet had no influence on meat quality.

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3094
Author(s):  
Letlhogonolo Selaledi ◽  
Josephine Baloyi ◽  
Christian Mbajiorgu ◽  
Amenda Nthabiseng Sebola ◽  
Henriette de Kock ◽  
...  

An experiment was conducted to examine the effects of yellow mealworm larvae (Tenebrio molitor) meal inclusion in diets of indigenous chickens. A total of 160 mixed-sex indigenous Boschveld chickens were randomly divided into four categories: control soybean meal (SBM) and yellow mealworm with percentage levels of 5, 10 and 15 (TM5, TM10 and TM15, respectively). Five replicate pens per treatment were used, with eight birds per pen/replicate. On day 60, two birds from each replicate were slaughtered and eviscerated. Meat quality parameters were measured out on raw carcass and cooked breast meat. The carcass weight, breast weight and gizzard weight of the control group was higher (p < 0.05) than the treatment group (TM15). The cooking loss was lower (p < 0.05) in the SBM control group but higher in the TM15 group. Colour characteristics of breast meat before cooking was lighter in the TM10 and TM15 group, ranged from 61.7 to 69.3 for L* and was significant (p < 0.05). The TM10 and TM15 groups showed a lighter colour than the SBM and TM5 groups. The breast meat pH taken after slaughter was different (p < 0.05) in TM5 and TM15, with the highest reading (pH 6.0) in the TM5 group. In conclusion, our experiment indicated that dietary Tenebrio molitor in growing Boschveld indigenous chickens’ diets could be considered a promising protein source for Boschveld indigenous chickens.


Author(s):  
V. Ravindran ◽  
S. Elliott

SummaryThe following trial was conducted to investigate the effects of Se source (inorganic sodium selenite (SS) versus organic use Sel-Plex® (SP; Alltech Inc, Nicholasville, KY, USA)) on the performance, feathering and meat quality of 900, one-day-old male broilers over a 42 day growing period. Pens (n = 20) were randomly assigned to either: Diet A (no Se; negative control), Diet B as for diet A plus 0.3 mg/kg SS (positive control), Diet C as for diet A plus 0.2 mg/kg SP, Diet D as for diet A plus 0.3 mg/kg SP and Diet E as for diet A plus 0.4 mg/kg SP. From day 1 to 28, significant (P < 0.05) treatment effects were seen for feed intake and FCR, with values for the negative control being higher than for the diets containing Se. The best FCR was recorded for the diet containing 0.4 mg/kg SP. Breast meat yield for birds fed the negative control were lower than those fed selenite or SP supplemented diets (P < 0.05). Feather measurements on d 14, 28 and 42 of age showed that, although scores became poorer with age (4.9 at 14 d, 4.6 at 28 d and 3.6 at 42 d), they were unaffected (P > 0.05) by dietary Se inclusion. Numeric trends in favour of SP were seen in cooking losses in meat chilled for 24 hours and seven days. Cooking losses in meat frozen for seven days were significantly influenced by Se inclusion, whereby values for birds fed 0.3 and 0.4 mg/kg SP were significantly lower than values for birds fed inorganic selenite (P < 0.05). Tissue Se concentrations were highest for the SP diets. Meat oxidation from the birds fed SP was lower than for the birds fed no Se or SS. The results demonstrated that SP may be more advantageous in improving certain variables of performance and meat quality compared to inorganic sources of Se.


2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 323-329
Author(s):  
N. Dzinic ◽  
Lj. Petrovic ◽  
V. Tomovic ◽  
T. Tasic ◽  
S. Filipovic

Effect of partial substitution of crushed soybean by different portions of rape seed on yield and chicken breast quality (nutritive and technological) was investigated in the paper. ROSS 308 hybrids were used for investigations. Control group (K) was fed with standard mixture and experimental groups with mixture in which crushed soybean partially substituted by 10% (O1), 15% (O2) and 20% (O3) extruded rape seed (EZUR). Rape seed was extruded with corn germ in ratio 50:50. It was concluded that there are no significant differences in breast meat yield between control and experimental groups (P > 0.05). The changes in chicken meal had no influence (P > 0.05) on nutritive quality of breast meat (the contents on protein, connective tissue protein, free fat and total ash). Additionally was found that the technological quality of breast meat of the control and experimental groups averagely corresponds to "normal" meat quality considering the parameters and criteria for quality determination (pHu, L*, water holding capacity).


2011 ◽  
Vol 27 (4) ◽  
pp. 1697-1703 ◽  
Author(s):  
N. Dzinic ◽  
Dj. Okanovic ◽  
M. Jokanovic ◽  
T. Tasic ◽  
V. Tomovic ◽  
...  

The aim of this paper was to investigate the carcass and breast meat (nutritional, technological and sensory) quality of chickens (line ROSS 308) fed extruded corn. It was concluded that a diet with extruded corn increases chilled carcass weight and the share of breast meat in chilled carcass. Also, the breast meat of experimental group contains more protein and less free fat comparing to the control group. Based on the parameters and criteria for defining the quality of chicken breast meat (pHu and L


Author(s):  
Е.Н. ПРАВДИНА ◽  
И.Ю. БЫСТРОВА ◽  
Е.А. КУВШИНОВА ◽  
И.В. КАПИТОШИНА

Проблема и цель. Целью исследований явилось изучение в условиях промышленной технологии новых методов повышения продуктивных качеств свиней за счёт использования высокопротеинового корма из сухой крови свиней. Методология. Для экспериментов методом сбалансированных групп были составлены 8 групп свиней в возрасте 28 дней, по 30 голов каждая. В ходе исследований проводили оценку роста молодняка, изучали мясные качества свиней и физические свойства мяса. При этом нами учитывались такие показатели как абсолютный и среднесуточный приросты, живая масса, убойная масса, убойный выход, площадь «мышечного глазка», толщина шпига, длинна туши, влагоудерживающая способность и цветность мяса. Результаты. В конце опытного периода животные всех опытных групп, получавшие с рационом сухую кровь свиней, превосходили по массе свиней соответствующих контрольных групп. По породе йоркшир – на 2,1 кг, по породе ландрас – на 3,1 кг, по породе дюрок – на 4,3 кг, по гибридной группе – на 2,8 кг. Наиболее высокими показателями мясных качеств характеризовались животные опытных групп. Так, свиньи порды йоркшир превосходили животных контрольной группы той же породы на 0,6 %, по породе ландрас – на 1,1 %, по породе дюрок – на 0,6 %, по гибридам – на 0,8 %. Более высокая влагоудерживающая способность была отмечена в мясе животных породы ландрас и гибридной группы – 57,2 % и 56,8 %. Показатель рН мышечной ткани животных опытных групп находился в пределах нормы. Цветность мяса свиней разных генотипов в результате скармливания сухой крови свиней повышалась. Заключение. Таким образом, включение в рационы свиней сухой крови свиней оказывает положительное влияние на рост животных и улучшает мясные качества свиней и физические показатели мяса. Problem and goal. The purpose of the research was to study new methods of increasing the productive qualities of pigs by using high-protein feed from dry pig blood in the conditions of industrial technology. Methodology. For the experiments, 8 groups of pigs aged 28 days, 30 heads each, were made up by the method of balanced groups. In the course of the research, the growth of young animals was evaluated, the meat qualities of pigs and the physical properties of meat were studied. At the same time, we took into account such indicators as absolute and average daily gains, live weight, slaughter weight, slaughter yield, the area of the "muscle eye", the thickness of the ham, the length of the carcass, the moisture-retaining ability and the color of the meat. Results. At the end of the experimental period, the animals of all experimental groups that received dry pig blood with the diet were superior in weight to the pigs of the corresponding control groups. For the Yorkshire breed - by 2.1 kg, for the Landrace breed - by 3.1 kg, for the Duroc breed - by 4.3 kg, for the hybrid group - by 2.8 kg. The animals of the experimental groups were characterized by the highest indicators of meat qualities, so Yorkshire pigs outperformed the animals of the control group of the same breed by 0.6 %, for the Landrace breed-by 1.1 %, for the Duroc breed – by 0.6%, for hybrids – by 0.8 %. Higher water-holding capacity was observed in the meat of Landrace and hybrid group animals – 57.2 % and 56.8 %. The pH of the muscle tissue of the experimental animals was within the normal range. The color of pig meat of diferent genotypes increased as a result of feeding dry pig blood. Conclusion. Thus, the inclusion of dry pig blood in the diets of pigs has a positive efect on the growth of animals and improves the meat quality of pigs and the physical performance of meat.


2013 ◽  
pp. 95-102
Author(s):  
Djordje Okanovic ◽  
Natalija Dzinic ◽  
Dejan Karovic ◽  
Tatjana Tasic ◽  
Vera Radovic ◽  
...  

The aim of these investigations was to determine the influence of mineral adsorbents ?Minazel? and ?Minazel Plus? added into broiler diet, on the carcass quality and nutritional, technological and sensory properties of breast meat. The examination was done on Cobb 500 provenience divided into 4 groups: control group C (fed without addition of mineral adsorbent), experimental group E I (0.5% of Minazel), experimental group E II (0.2% of Minazel Plus), experimental group E III (0.3% of Minazel Plus). The results showed that the broilers fed with the addition of mineral adsorbents, had a higher (P < 0.01) mass of chilled carcass ?ready to grill? and breast mass, than the broilers of the control group. Based on the parameters and criteria for defining the quality of chicken breast meat (pHu and L*) it can be concluded that meat of all groups had in average "normal" quality. According to the results of sensory analyzed roasted breast meat, meat of experimental groups had preferable smell and tenderness.


2009 ◽  
Vol 54 (No. 11) ◽  
pp. 490-497 ◽  
Author(s):  
M. Lichovníková ◽  
J. Jandásek ◽  
M. Jůzl ◽  
E. Dračková

: In chick hatcheries, males of laying hybrids are considered to be “waste” and the majority of these males are killed just after hatching. On the other hand, the interest of consumers in products from alternative systems (organic, free-range) is increasing. The idea was to evaluate the meat quality of these males when they have access to free range because there is not such a study available. The aim of this study was to compare the physical and sensory quality of the meat of layer males with fast-growing broilers at the same age when they had both access to free range and when they were fed to 49 and 90 days of age. Slow-growing ISABROWN (IB) layer males and fast-growing Ross 308 (RS) chickens were kept in free-range conditions to evaluate carcass and meat quality at 49 days and 90 days of age. Live weight, carcass yield, breast meat yield and the proportion of abdominal fat were significantly higher (<I>P</I> < 0.001) in RS at both ages. The proportions of fat in the breast meat were significantly lower (<I>P</I> < 0.01) in IB at both ages. The value of pH 24 h was significantly higher in IB and the meat was darker (<I>P</I> < 0.001) in these chickens. The overall acceptability was significantly better (<I>P</I> < 0.01) in IB at 90 days of age. The laying males are acceptable for an alternative system of poultry meat production from the aspect of meat quality. The quality was comparable or even higher in comparison with fast-growing chickens.


2019 ◽  
Vol 35 (5) ◽  
pp. 571-578 ◽  
Author(s):  
S. Dabbou ◽  
L. Gasco ◽  
C. Lussiana ◽  
A. Brugiapaglia ◽  
I. Biasato ◽  
...  

AbstractThis study evaluated the effects of a diet containing yellow mealworm (Tenebrio molitor L.; TM) larva meal on quality parameters (pH24, color and drip losses), proximate composition and fatty acid (FA) profile of meat from free-range chickens. A total of 140 medium-growing hybrid female chickens were free-range reared and randomly allotted to two dietary treatments: a control group and a TM group, in which TM meal was included at 75 g kg−1 as fed in substitution of corn gluten meal. Each group consisted of five pens as replicates, with 14 chicks per pen. At 97 days of age, ten birds (two birds/pen) from each feeding group were slaughtered at a commercial abattoir. Quality parameters and proximate composition of breast and thigh meat were not affected by treatment. The effects of dietary TM larva meal on the FA profile of thigh meat were negligible. Breast meat from TM-fed chickens showed higher oleic and α-linolenic acid percentages as well as lower atherogenicity and thrombogenicity indexes. In conclusion, this study demonstrated that TM inclusion in diets for free-range chickens did not prejudice meat quality traits. The obtained results confirm that TM can be considered a promising insect protein source for the poultry feed industry.


2020 ◽  
Vol 17 ◽  
pp. 00253
Author(s):  
Elena Kurchaeva ◽  
Aleksander Vostroilov ◽  
Elena Vysotskaya ◽  
Igor Maksimov

The study is dedicated to research into efficiency of influence of probiotic additive “Prostor” on productivity, chemical composition of meat of rabbits. The influence of synbiotic preparation “Prostor” on the population of male rabbits of hybrid form “Hypharm” of French breeding, selected at the age of 45 days. The study took place at the industrial complex of LLC “Lipetsk rabbit” in Khlevensky district of Lipetsk region. The animals were divided into control and experimental groups by the method of pairs-analogues. The control group of rabbits received the basic diet consisting of lall-mash feed PZK-92, while the rabbits of the experimental group received compound feed PZK-92-60-18, which included synbiotic “Prostor” in a dosage of 1 g/kg of feed. Meat quality assessment was carried out at the age of 105 days after control slaughter in the amount of 3 animals from each group. The use of the stated dosage of synbiotic preparation had a positive effect on the productive indicators of rabbits (live weight, average daily growth). The morphological composition data showed that rabbits of the experimental group outperformed rabbits of the control group by 23.84 % in terms of muscle mass. Analysis of the chemical composition of muscle tissue showed that the use of feed additives “ProStor” in a dosage of 1.0 g per kg of feed has a positive effect on meat productivity and quality of rabbit meat, which opens up prospects for the use of the preparation in the rabbit industry.


2021 ◽  
Vol 206 (03) ◽  
pp. 53-66
Author(s):  
M. Drozd ◽  
V Usevich

Abstract. The article presents the results of a comprehensive study on the effect of feed mineral additives on meat products in poultry farming. The purpose of the work is to analyze the effects of mineral adaptogen on the quality of meat and poultry products. Research methods. Research and production experience was carried out using generally accepted zootechnical, pathomorphological, histological, veterinary-sanitary and statistical research methods. Results of the study. The causes of bird death and pathological changes in organs and tissues during autopsy in the experimental and control groups are described. Describes the results of studies of veterinary-sanitary expertise of meat quality when conducting organoleptic evaluation of carcasses and offal, this sub-microscopic features of striated skeletal and cardiac muscle, studied the microstructure of cartilage in the femoral head and the microarchitecture of the liver as the main organ of metabolism and by-product. During histological studies, the structure of cells and tissues, when using mineral adaptogen, was more morphologically mature and was in a functionally active state, and in the control group, dystrophic and necrotic processes and areas with immature muscle fibers were observed. When comparing the lifetime indicators for increasing the live weight of broilers when feeding mineral adaptogen, the average daily weight gain increases, which is associated with a decrease in the toxic load and due to the receipt of micro- and macronutrients necessary for the growth and development of poultry. The safety of broiler livestock and the slaughter yield of meat increases. Minerals contribute to the proper development of the musculoskeletal system and the formation of cartilage tissue, which affects the quality of fattening, the bird can move and consume food. during the veterinary and sanitary assessment of meat quality, the results confirming the high quality of meat products were also obtained. Scientific novelty. For the first time, the paper shows not only the effect on the clinical state of poultry during the fattening of Arbor Acres broilers, the safety of livestock, but also on the microstructure and maturity of meat and offal during the slaughter period.


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