PSVI-15 Combined effect of C73T × C528T polymorphisms in the leptin gene with quantitative and qualitative indicators of meat productivity

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 234-235
Author(s):  
Alexandra Lapshina ◽  
Vladimir Kolpakov ◽  
Kinispay Dzhulamanov ◽  
Nikolay Gerasimov ◽  
Marina Dubovskova
Keyword(s):  
Financial Support ◽  
Raw Materials ◽  
Live Weight ◽  
Combined Effect ◽  
Carcass Weight ◽  
Carcass Yield ◽  
Angus Cattle ◽  
Combined Genotypes ◽  
Meat Productivity

Abstract The LEP is a highly polymorphicgene and it is associated with genetic differences in various productivetraits in cattle. The aim of research was to study the combined effect of C73T and C528T polymorphisms in leptin gene on meat productivity and carcass grade in Aberdeen-Angus cows and heifers. Heifers (n = 49) were slaughtered at the age of 20 months and cows (n = 30) after the first calving (3 years). There were seven haplotypes C73T (GenBank AF120500) × C528T (GenBank AB070368) identified in cows with different frequency. The maximum frequency was established in combined genotypes CT/CT (0.37), TT/CC (0.27) and CT/CC (0.13). The most massive carcasses (337.5 kg) were obtained from cows-carriers of the CT/CC haplotype, which exceeded their peers by 14.8–24.7 kg (4.59–7.90%; P >0.05). However, cows carrying the CT/CC genotype had a minimum carcass yield of 49.8%. There were eight haplotypes identified in heifers. The highest frequency was in combinations CT/CT (0.26), TT/CC (0.20), CC/TT (0.20), CC/CT (0.12), TT/CT (0.10). Heifers carrying the TT/CT genotype were characterized by the highest live weight (568.9 kg) and carcass weight (331.2 kg), exceeding the indicators of peers by 8.9–43.5 kg (1.59–8.28%; P < 0.05, P > 0.05) and 10.9–22.2 kg (3.40–7.18%; P < 0.05, P > 0.05), respectively. The maximum carcass yield was recorded in carriers of the CT/CC haplotype (60.7%). The best carcasses grade were observedin heifers with a combination of CC/TT and CT/CT genotypes. The highest categories (Prime and TopChoice) were assigned to 70.0 and 69.2% of carcasses, respectively. The superiority of haplotype CT/CT in the quality of meat raw materials was confirmed in cows. Thus, the combination of C73T and C528T polymorphisms in the leptin gene is associated with intra-breed variability in live weight, carcass weight and yield, and carcass grade in Aberdeen-Angus cattle. This research was performed with financial support from the project 0526-2021-0001 of RAS.

scholarly journals Evaluation of Chemical Composition and Meat Quality of Breast Muscle in Broilers Reared under Light-Emitting Diode

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1505
Author(s):  
Francesca Bennato ◽  
Andrea Ianni ◽  
Camillo Martino ◽  
Lisa Grotta ◽  
Giuseppe Martino
Keyword(s):  
Fatty Acids ◽  
Meat Quality ◽  
Light Emitting Diode ◽  
Live Weight ◽  
Carcass Weight ◽  
Light Sources ◽  
Breast Meat ◽  
Carcass Yield ◽  
Light Emitting

The present study was designed to investigate the role of three different light-emitting diode (LED) light color temperatures on the growth performance, carcass characteristics, and breast meat quality of broilers. In our experimental condition, 180 chicks were randomly distributed into four environmentally controlled rooms (three replicates/treatment). The experimental design consisted of four light sources: neon (Control), Neutral (Neutral LED; K = 3500–3700), Cool (Cool LED; K = 5500–6000), and Warm (Warm LED; K = 3000–2500). Upon reaching the commercial weight (3.30 ± 0.20 kg live weight), 30 birds from each group were randomly selected, and live and carcass weight were evaluated to determinate the carcass yield. Following the slaughtering, samples of hemibreast meat were collected from each group and analyzed for physical and chemical properties, fatty acids composition, and volatile compounds. Live weight and carcass weight were negatively influenced by the Warm LED; however, no significant differences were observed in carcass yield in any of the experimental conditions. Higher drip loss values were detected in breast meat samples obtained by broilers reared under Neutral and Cool LEDs. In regard to the meat fatty acids profiles, higher polyunsaturated fatty acids (PUFA) values were detected with the Warm LED; however, the ratio of PUFA/saturated fatty acids (SFA) did not change in any group. The evaluation of volatile profiles in cooked chicken meat led to the identification of 18 compounds belonging to the family of aldehydes, alcohols, ketones, and phenolic compounds, both at 0 (T0) and 7 (T7) d after the cooking. The results of the present study suggest that the LED represents an alternative technology that is cheaper and more sustainable than traditional light sources, since it allows economic savings for poultry farming without significant alterations on the production parameters or the quality of the product.

Influence of different factors on the growth rate of young animals and the quality of beef

2021 ◽  
pp. 28-39
Author(s):  
V. N. Pristupa ◽  
D. S. Torosyan
Keyword(s):  
Experimental Studies ◽  
Live Weight ◽  
Federal District ◽  
Steppe Zone ◽  
Industrial Complex ◽  
Black And White ◽  
Dry Steppe ◽  
Intensive Rearing ◽  
Meat Productivity

The purpose of the work was to study and identify the main factors aff ecting the quantity and quality of beef produced and sold in the Southern Federal district. A comparative assessment of the growth, development, formation of meat productivity and quality of beef of young animals of beef, dual and dairy breeds with stall-pasture technology and intensive rearing in the industrial complex. Experimental studies have been carried out in farms in the Rostov region. The object of research was cows with calves of Kalmyk, Hereford, Aberdeen-Angus, Russian komolaya, Kazakh White-headed breeds, as well as young animals of the same breeds, in addition, Black-and-White and Swiss breeds. Removable live weight in Hereford steers at 18 months of age was 658,0 kg, and Aberdeen-Angus – 655,2 kg. Domestic steers of Kalmyk were 41–44 kg lower in live weight than their herdmates of two imported breeds. However, with intensive rearing at 18 months of age, steers of Kalmyk breed had a removable live weight of more than 613,7 kg and a carcass weight of 326 kg. The yield of hot carcass was 55,4 %, and the slaughter yield was 58,89 %, which was only 1–2 % lower than the world’s leading beef breeds. It has been found when analyzing the results of boning the half-carcasses of experimental steers that the biggest weight of half-carcasses and the content of muscle and fat tissue in them in absolute terms were in Hereford steers. Steers of Kalmyk breed took the third place in terms of weight of large-sized semi–fi nished products and signifi cantly lost to Aberdeen-Angus herdmates by 7,3 kg or 6,5 %, and Hereford steers by 9,2 kg or 8,3 %. The results obtained prove the expediency of using stallpasture technology in the dry-steppe zone of the Southern Federal district when rearing young animals for beef up to 350–400 kg live weight at 15 months of age and its subsequent intensive rearing under industrial technology, in order to obtain the live weight of more than 570 kg and produce cost-eff ective beef.

An evaluation of beef carcass quality 2. Influence of variation in grazing intensity and the level of barley supplementation with silage on the carcass and meat quality of Friesian steers

1972 ◽  
Vol 15 (3) ◽  
pp. 229-237
Author(s):  
C. E. Hinks ◽  
J. H. D. Prescott
Keyword(s):  
Meat Quality ◽  
Compensatory Growth ◽  
Live Weight ◽  
Grazing Intensity ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Eating Quality ◽  
Winter Period ◽  
Carcass Quality

SUMMARYTwo experiments concerning the effects, on the carcass and meat characteristics of 18-months-old Friesian steers, of variation in grazing intensity and the level of barley feeding with silage are reported.Groups of 12 steers were grazed at different intensities over 5-month grazing periods, such that live-weight differences of 38 kg and 16 kg were recorded at housing. No compensatory growth was recorded during the subsequent winter feeding period.Whilst the grazing treatments had little effect on carcass or meat quality, higher levels of barley feeding with silage over the winter period (710 v. 410 kg/steer) had significant effects on live-weight gain, and increased carcass weight by 21 kg at slaughter. The higher yield of carcass weight was reflected in significant differences in carcass composition, joint proportions and retail cut-out value. Sixty per cent of the carcass weight difference was removed as trim fat. Differences in carcass fatness were not associated with any differences in eating quality.

scholarly journals COMPREHENSIVE ASSESSMENT OF FARMING RAMS BREEDING VALUE RELATED TO DIFFERENT GENOTYPES

2020 ◽  
pp. 137-148
Author(s):  
Ivan Pomitun ◽  
Nadezhda Kosova ◽  
Igor Korkh ◽  
Lubov Pankiv ◽  
Natalia Boyko ◽  
...  
Keyword(s):  
Live Weight ◽  
Breeding Value ◽  
Daily Growth ◽  
Reproductive Ability ◽  
Individual Traits ◽  
Wide Range ◽  
Productivity Indicators ◽  
Meat Productivity ◽  
Breed Sheep

The results of evaluating the breeding value of rams of different genotypes by a wide range of productivity indicators of their descendants are presented. Tribal rams of the Kharkov interbreed type of Prekos breed of 2-3 years of age, as well as crosses from the introductory crossing of Prekos sheep with the Romanov breed and Merinolandsheep, were evaluated. The resulting offspring were grown under the conditions of one production flock. The evaluation considered the indicators of the reproductive ability of ewes, sex and type of birth of the offspring, the safety of lambs from birth to 20 days of age, the dynamics of the average daily growth of daughters in the uterus and at the age of birth to 20 days and from 21 to 90 days, live weight indicators were considered, cutting and length of hair of daughters at the age of 14 months. Studies have established that the average yield of lambs throughout the sample was 115.3 % per 100 ewes, with significant differences between the estimated producers - from 105.1 to 131.3 %. This indicator did not have a definite relationship with the genotype of the estimated sheep. Among the offspring of all rams, males slightly prevail over females in the ratio of 1.09 to 1. This advantage is due to the large number of rams born among same-sex twins. Their part exceeded 28 %, while only 23.4 % turned out to be similar in type of birth. By the sum of the ranks that were put to individual sheep for the indicators of the average daily growth of daughters at different periods of their growth, the best cross-breed sheep No. 1625 and No. 9953 are distinguished. On the whole, there is a fairly clear tendency for a positive relationship between the ranks for the growth rate in the embryonic period and the same indicator for posterity aged 21-90 days. According to both the ranking and the probity-based evaluation results, ram No. 1625 (a created line based on crossing with the Romanov breed) is assigned to complex improvers. The rest topping ram out to be improvers of individual traits, and the producer of the breed Prekos No. 1823 was an improvement in production of wool and length of staple. Ram No. 1960 turned out to be a complex deteriorator in the quality of offspring. The descendants of rams No. 4464 and 9953, derived from the breed of Merino landscape, reliably (p≤0.01), by 18.6-20.8 % in terms of wool coefficients, are inferior to the daughters of ram No. 1823, breed Prekos, which is an unconditional evidence of the strengthening of their characters meat productivity over wool one.

The effects of fasting, electrolyte supplementation and electrical stimulation on carcass yield and meat quality in bulls

1992 ◽  
Vol 72 (4) ◽  
pp. 791-798 ◽  
Author(s):  
S. D. M. Jones ◽  
A. L. Schaefer ◽  
A. K. W. Tong
Keyword(s):  
Electrical Stimulation ◽  
Meat Quality ◽  
Live Weight ◽  
Road Transport ◽  
Quality Parameters ◽  
Carcass Weight ◽  
Muscle Quality ◽  
Marbling Score ◽  
Carcass Yield ◽  
Weight Losses

Eighty-nine yearling beef bulls were allocated to one of four lairage treatment groups of either 0, 12, 24 or 36 h. Except for the 0-h group, all animals were given a 4-h road transport followed by either 12, 24 or 36 h in lairage pre-slaughter without feed and water. An electrolyte solution was offered during lairage to groups of bulls within the fasting treatments. Following slaughter and dressing, alternate carcass sides were stimulated (470 V, 1.5 A, 60 Hz) for 60 s, and data on muscle quality were collected. Fasting resulted in a progressive reduction in warm and cold carcass weight (as a proportion of final live weight) and reduced liver, rumen and intestine proportions. Electrolyte supplementation was effective in reducing carcass weight losses and appeared to have its greatest effect on bulls kept in lairage for 36 h. Fasting and electrolyte supplementation had few effects on muscle quality. Electrical stimulation reduced muscle shear value, lowered final muscle pH, brightened muscle colour at 24 h post mortem but had no effect on marbling score. It was concluded that electrolyte supplementation increased carcass yield in fasted bulls but had little beneficial effect on meat quality. On the other hand, electrical stimulation improved several quality parameters, including muscle shear value. Key words: Bulls, cattle, fasting, lairage, electrical stimulation, meat quality

scholarly journals Assessment of fattening performance and slaughtering characteristics of young bulls from Aberdeen Angus breed, Volyn Meat breed, and Charolais breed

2019 ◽  
Vol 9 (4) ◽  
pp. 641-645
Author(s):  
N. P. Svyrydenko ◽  
S. O. Kostenko
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Carcass Yield ◽  
Live Weight Gain ◽  
Fattening Performance ◽  
Angus Cattle ◽  
Growth Intensity

This paper deals with the research of special features of fattening and slaughtering qualities of specialized meat cattle bred in Ukraine. It establishes special feature of the cattle growth intensity and development in terms of live weight gain and linear assessment of the exterior in the age from birth to 18 months. It has been established that young bulls of Volyn Meat breed were characterized by a higher slaughter yield of 61.7%. Charolais bulls of the same age had the highest carcass yield of 78.5%. Young Aberdeen Angus cattle had the highest fleshing index of 4.5 compared to 4.3 in bulls of the same age of other breeds.

scholarly journals Influence of complex feed additives on the meat productivity of young cattle in the conditions of Yakutia

2021 ◽  
Vol 845 (1) ◽  
pp. 012030
Author(s):  
A I Grigoreva ◽  
M F Grigorev ◽  
D I Stepanova ◽  
S I Stepanova
Keyword(s):  
Growth Rate ◽  
Visceral Fat ◽  
Raw Materials ◽  
Meat Products ◽  
Live Weight ◽  
Feed Additives ◽  
Control Group ◽  
Organoleptic Evaluation ◽  
Young Cattle ◽  
Meat Productivity

Abstract The paper presents the results of fattening young cattle in the conditions of Yakutia with the use of complex feed additives from local natural raw materials in their diets. One of the ways to increase the meat productivity of livestock is to optimize feeding by inserting complex feed additives into their diets. Therefore, studies were conducted to determine the effectiveness of complex feed additives in the fattening of young cattle in the conditions of Yakutia. At the beginning of the experiment, the live weight of the animals in the groups did not differ much, but starting from the age of 12 months, the superiority of the animals from the experimental groups is noted. In the period of 12-15 months of age, the animals from the experimental groups exceeded the growth rate of the control group by 6.70% and 4.76%. In the period of 15-18 months old, the animals of the control group were inferior to the experimental groups by 28.31% and 16.54%. On average, the animals of the experimental groups grew more intensively in comparison with the control group by 12.73% and 8.66 %. Analysis of animal slaughter data showed that the experimental groups were superior to the control group in a number of indicators, such as the mass of the steam carcass by 8.04% and 4.43 %, the mass of visceral fat by 18.59% and 7.39%. The organoleptic evaluation of meat products also confirmed the superiority of the experimental groups over the control group. Thus, the use of complex feed additives in the feeding of young cattle on fattening showed its effectiveness.

scholarly journals Mexican oregano (Lippia berlandieri Schauer) oil on turkey slaughter quality

2016 ◽  
Vol 4 (10) ◽  
pp. 177
Author(s):  
Ramón Silva-Vázquez ◽  
José Arturo García-Macías ◽  
Lorenzo Antonio Durán-Meléndez ◽  
Michel E. Hume ◽  
Gerardo Méndez-Zamora
Keyword(s):  
Control Diet ◽  
Live Weight ◽  
Carcass Yield ◽  
Oregano Oil ◽  
Head Neck

The quality of slaughtered turkeys fed a diet supplemented with Mexican oregano (Lippia berlandieri Schauer) oil was investigated. Two treatments were studied. T0: control diet and T1: control diet + 400 mg kg−1 of oregano oil with 60 % carvacrol. Live weight at slaughter was di erent, with T0 weighing 11.0 kg and T1 11.89 kg, while the performance of feathers and drumstick was higher in T0 (4.33 and 3.18 % respectively). Viscera, blood, head, neck and hot and cold carcass yield did not di er between treatments (p > 0.05). Oregano oil at 400 mg kg−1 can be used in the production of turkeys to in uence slaughter quality. 

scholarly journals Effect of adsorbent and phospholipide on meat production and nutritional value of fattened calf bull meat

2021 ◽  
Vol 262 ◽  
pp. 02022
Author(s):  
Maksim Shabanov ◽  
Victor Temiraev ◽  
Taladin Kokov ◽  
Beslan Efendiev ◽  
Shamurat Herremov
Keyword(s):  
Meat Products ◽  
Live Weight ◽  
The Body ◽  
Meat Production ◽  
Study Results ◽  
Heavy Metal Salts ◽  
Group 3 ◽  
Young Cattle ◽  
Meat Productivity

One of the most effective ways of removing HM salts that have entered the digestive tract of fattened animals is the technological method of including adsorbent preparations in their diets, which, binding various toxins, excrete them from the body. The study purpose is to develop a method to increase the meat productivity and quality of meat of young cattle for fattening in a technogenic zone by inclusion of ToxySorb adsorbent in their diets with a high content of heavy metal salts in the amount of 1.25 kg/t of compound feed and lecithin in the amount of 10 g/100 kg of live weight. According to study results, it was shown that when these drugs were fed together in the indicated quantities, it contributed to better detoxification of xenobiotics. The calf bulls of experimental group 3 had the best slaughter indicators, as well as the best consumer, sanitary and hygienic properties of meat products.

scholarly journals PSVIII-13 Assessment of broiler chickens meat productivity

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 285-286
Author(s):  
Alexander Aristov ◽  
Kirill Plemyashov ◽  
Vera Bolgova ◽  
Konstantin Lobodin ◽  
Lidiya Esaulova
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Carcass Weight ◽  
Production Cycle ◽  
Qualitative Composition ◽  
High Quality ◽  
Meat Productivity ◽  
By Products ◽  
Research Show

Abstract At present, modern high-yielding crosses of broiler chickens are used to produce high-quality meat with high technological and consumer properties. To assess the meat productivity of broiler chickens grown on fodder produced in the conditions of the poultry factory at our own feed factory, a control slaughter was carried out at the age of 42 days. Analysis of the data obtained shows that with an average poultry live weight of 2000 ± 50 g, the slaughter yield of broiler chickens was 71.8 ± 0.13%. At the control slaughter, we found that the weight of the gutted carcass was 75.23%, offal 10.32%, and technical waste 14.45% (Figure 1).When studying the quantitative and qualitative composition of by-products, we found that liver accounted for 18.42%, stomachs 7.47%, heart 3.39%, neck 12.59%, legs 33.9%, heads 24.23 % by weight of offal.In the structure of technical waste feather is 24.92%, blood is 32.87%, intestine is 42.21% (Figure 3).Thus, the results of our research show that when cutting broiler chickens grown on self-made feeds under the conditions of modern poultry enterprises with a closed production cycle, gutted carcass weight is 75.23%, while legs and heads constitute the main bulk of the mass of by-products.

Sign in / Sign up

Export Citation Format

Share Document