Comparison of 2 growth patterns during the growing period in fattening bulls. 3. slaughter characteristics, carcass composition and meat quality

1993 ◽  
Vol 1993 ◽  
pp. 217-217
Author(s):  
A. Clinquart ◽  
C. Van Eenaeme ◽  
T. Van Vooren ◽  
J. Van Hoof ◽  
L. Istasse
Keyword(s):  
Meat Quality ◽  
Food Restriction ◽  
Early Stage ◽  
Average Daily Gain ◽  
Live Weight ◽  
Growth Patterns ◽  
Carcass Composition ◽  
Growing Period ◽  
Daily Gain

The degree to which growth patterns are modified after a period of food restriction affects the compositional changes of the carcasses(Carstens et al., 1992), furthermore, the growth rate has a direct effect on the physical properties of meat (Fishell et al., 1985). The objective of this experiment was to evaluate the effects of a severe food restriction at a early stage of maturity on the slaughter characteristics and meat quality of Belgian Blue bulls.Twelve Belgian Blue bulls (dual purpose type) weighing 233 kg were offered two different planes of nutrition during the growing period. Six bulls (Group-) received a restricted diet so that their average daily gain was 0.34 kg/d (Group+) during 202 days. By contrast six other bulls were given a more conventional growing diet and their average daily gain was 1.13 kg/d. Both Groups were fattened with similar diet and slaughtered when the live weight was close to 600 kg. Carcass weight was measured and killing-out proportion calculated, the composition of the carcass was estimated after dissection of ribs 7, 8, 9 removed 48 h post-mortem.

The effects of feeding a chocolate product on growth performance and meat quality of finishing swine

1997 ◽  
Vol 77 (1) ◽  
pp. 1-8 ◽  
Author(s):  
E. P. McNaughton ◽  
R. O. Ball ◽  
R. M. Friendship
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Composition ◽  
Carcass Quality ◽  
Finishing Pigs ◽  
Chocolate Product ◽  
Swine Diets ◽  
Daily Gain

The effects of including a waste chocolate confectionary product in swine diets on growth performance, carcass composition and meat quality of finishing pigs were determined. Four isocaloric, isonitrogenous diets were formulated to include 0, 10, 20 and 30% of a chocolate product in a pelleted corn and soybean-meal-based-diet and fed ad libitum to 32 gilts and 32 barrows from 54 kg to 105 kg. There were no significant differences among diets for average daily gain, feed intake and feed efficiency. Fat content in the diets increased from 3 to 7% with increasing inclusion, but there were no significant (P > 0.05) differences for backfat depth, total dissected fat, total lean or percent lean of the dissected carcass. With respect to meat quality, there were no significant differences observed for colour, structure and marbling of the loin and ham muscle. There were no treatment differences for the firmness of the inner backfat of pigs consuming the various diets. Waste chocolate confectionary can be fed to growing swine at inclusion levels up to 30% of the diet with no adverse effects on growth or carcass quality. Key words: Alternative feedstuff, chocolate, pigs, growth performance, carcass quality

An evaluation of beef carcass quality 1. The influence of cereal feeding on the growth and carcass quality of Friesian steers

1972 ◽  
Vol 15 (3) ◽  
pp. 215-227 ◽  
Author(s):  
C. E. Hinks ◽  
J. H. D. Prescott
Keyword(s):  
Meat Quality ◽  
Live Weight ◽  
Carcass Composition ◽  
Factorial Experiment ◽  
Carcass Quality ◽  
Grazing Cattle ◽  
Weight Gains ◽  
Second Period ◽  
Tasting Panel

SUMMARYTwenty-four Friesian steers, initially 5 months of age, were involved in a 2 × 2 factorial experiment which spanned grazing and silage feeding periods of 22 weeks' duration. In the first period, cattle were stocked at a uniformly high density, with half of the group being fed 1·25 kg/head per day of supplementary barley. In the second period, the cattle were subdivided into four groups and fed varying levels of barley with silage. Finally all the animals received 3·65 kg/head per day of barley. Replicates of the four treatments were slaughtered at random after 5 to 11 weeks on this treatment. Whilst supplementary cereal feeding significantly increased the live-weight gains of steers at grass by 11%, this live-weight advantage was offset by their slower gains in the final weeks before slaughter. Feeding cereals to grazing cattle had little effect on carcass composition or the proportions of carcass joints, but their beef was considered, by a tasting panel, to be more tender than the meat from the control steers.Increasing the level of barley fed with silage only increased live-weight gains by 2%, and had little effect on carcass or meat quality.

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 Characterisation of carcass composition and meat quality of male suckling buffalo calves kept on natural grassland

2014 ◽  
Vol 56 (1) ◽  
pp. 1060-1065
Author(s):  
G. Holló ◽  
B. Barna ◽  
K. Nuernberg
Keyword(s):  
Meat Quality ◽  
Live Weight ◽  
Quality Parameters ◽  
Carcass Composition ◽  
Longissimus Muscle ◽  
Buffalo Calves ◽  
Natural Pasture ◽  
Natural Grassland ◽  
Intramuscular Fat Content

Abstract. The aim of this observational study (field experiment) was to evaluate carcass composition and meat quality of male suckling buffalo calves. The animals were born between June and September 2011 and were kept on natural pasture in a cow/calf herd. From the end of November 2011, the suckling calves were fed only roughage as feed supplement in a feedlot until slaughter. For a generalised characterisation, the basic statistics of 18 male calves were calculated. The animals were slaughtered at an average live weight of 196.0 kg. Growth, live weight development and most carcass traits varied substantially between individual calves. The 12th rib muscle composition measured by computer tomography indicated comparable meat contents as evaluated by manual dissection of the carcass. Meat quality parameters (pH and colour) and the nutrient composition (protein, fat, ash) of longissimus muscle samples of calves were relatively similar. The intramuscular fat content of longissimus muscle was low, but shows a high variation between 0.3–1.1 %.

scholarly journals Effects of immunocastration on growth performance, body composition, meat quality, and boar taint

2017 ◽  
Vol 62 (No. 6) ◽  
pp. 249-258
Author(s):  
R. Stupka ◽  
J. Čítek ◽  
K. Vehovský ◽  
K. Zadinová ◽  
M. Okrouhlá ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Composition ◽  
The Other ◽  
Boar Taint ◽  
Large White ◽  
Study Objective ◽  
Negative Effect ◽  
Daily Gain

The study objective was to evaluate the effect of immunocastration in the period between the first and second vaccinations and subsequently between the second vaccination and slaughter on growth performance, carcass composition, meat quality, and boar taint, and compare results in immunocastrated males (IC), uncastrated boars (UCM), surgically castrated barrows (CM), and gilts (FE). The study included 70 pigs of the Duroc × (Large White × Landrace) crossbreed. Upon the overall assessment of the selected fattening indicators (average daily gain, feed intake), significant differences between CM and the other groups were demonstrated. Meanwhile, no significant differences were found between the IC, UCM, and FE groups. In this test, immunocastrates showed no negative effect from the second vaccination in relation to those carcass value indicators evaluated in comparison with UCM and FE. CM showed adversely lower carcass value parameters compared the other groups. No significant differences in pH, meat colour, drip loss, shear force, and intramuscular fat were found. The values of these indicators obtained for IC converged with those measured in UCM and FE. It was demonstrated that immunocastration prevented the occurrence of undesired boar taint. Androstenone decreased by 77% and skatole by 71% in IC as compared to UCM.

scholarly journals Effect of Different Finishing Strategies and Steer Temperament on Animal Welfare and Instrumental Meat Tenderness

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 859
Author(s):  
Marcia del Campo ◽  
Xavier Manteca ◽  
Juan Manuel Soares de Lima ◽  
Gustavo Brito ◽  
Pilar Hernández ◽  
...  
Keyword(s):  
Animal Welfare ◽  
Meat Quality ◽  
Shear Force ◽  
Average Daily Gain ◽  
Live Weight ◽  
Meat Tenderness ◽  
Physiological Indicators ◽  
Lower Shear ◽  
Energetic Composition ◽  
Daily Gain

The aim of this experiment was to evaluate the effect of different fattening systems from pasture to concentrate and temperament on animal welfare (AW) and meat quality (MQ). Eighty-four Hereford steers were randomly assigned to the following groups: T1, pasture (4% of animal live weight: LW); T2, pasture (3% LW) plus concentrate (0.6% LW); T3, pasture (3% LW) plus concentrate (1.2% LW); T4, an ad libitum concentrate treatment. Temperament was assessed by three individual tests: crush score, flight time, and exit speed, building a multicriterial temperament index (TIndex). The flight zone was also registered for each treatment. AW was assessed through the integration of indicators of productivity, physiology, and behavior, as well as by monitoring the health status within each treatment. Shear force was registered for MQ. Differences in average daily gain were due to the different energetic composition of the diets (T4 > T3 > T2 > T1) and were not attributable to animal welfare problems. Animals from T4 had the higher average daily gain (ADG) but welfare was negatively affected, being evident through physiological indicators, the restriction or deprivation of relevant behaviors, diet-related diseases, and mortality. T1, T2, and T3 did not appear to compromise animal welfare. However, strict preventive measures and monitoring should be taken during the habituation process and when using any new diet that includes concentrate, because of possible dietary diseases. Shear force values were lower in T1. None of the animals in our experiment were excitable or aggressive, but there was a positive response to handling in all treatments. In addition, regardless of diet, calmer animals had higher average daily gain and lower shear force values; thus, temperament appears to have a significant influence on productivity and meat quality.

Effects of ovariectomy on body measurements, carcass composition, and meat quality of Huainan chickens

2017 ◽  
Vol 57 (5) ◽  
pp. 815 ◽  
Author(s):  
Xing Guo ◽  
Chendong Ma ◽  
Qi Fang ◽  
Bangyuan Zhou ◽  
Yi Wan ◽  
...  
Keyword(s):  
Meat Quality ◽  
Early Stage ◽  
Steroid Hormone ◽  
Carcass Composition ◽  
Body Measurements ◽  
Serum Concentrations ◽  
Breast Meat ◽  
Body Depth ◽  
Control Sham

This study investigated the effects of ovariectomy on body measurements, carcass composition, meat quality, and steroid hormone concentrations of Huainan female chickens. The left ovaries of healthy Huainan chickens were surgically or sham removed at 7 weeks of age. Two slaughters were performed at 14 and 23 weeks of age. In each slaughter, 15 control, sham-operated, and ovariectomised chickens were used, respectively. The ovariectomised group had higher (P < 0.05) body length, keel length, body depth, and weight gain than the other two groups at 14 weeks of age. Ovariectomy increased bodyweight at 14 and 23 weeks of age. However, dressing percentage, breast muscle yield, and leg muscle yield were not affected by ovariectomy. Compared with intact and sham-operated chickens, ovariectomised chickens had higher shear force values at 23 weeks of age and higher redness values (a*) at 14 and 23 weeks of age in breast meat. Moreover, ovariectomy decreased and increased serum concentrations of oestradiol and testosterone, respectively. Therefore, ovariectomy increased bodyweight, altered breast meat quality by increasing redness values, and increased body size and growth rates during the early stage, with no effects on carcass composition yield in female chickens.

scholarly journals ВЛИЯНИЕ КАЧЕСТВА И УРОВНЯ ПРОТЕИНА В РАЦИОНАХ НА ИНТЕНСИВНОСТЬ РОСТА БЫЧКОВ НА ОТКОРМЕ

2019 ◽  
pp. 102-108
Author(s):  
D.G. Pogosyan
Keyword(s):  
Higher Education ◽  
Growth Rate ◽  
Educational Institution ◽  
Average Daily Gain ◽  
Live Weight ◽  
Federal State ◽  
Bull Calves ◽  
E Mail ◽  
Daily Gain

В статье представлены и обобщены результаты многолетних исследований по изучению влияния качества и уровня протеина в рационах на интенсивность роста бычков. В проведённых исследованиях установлено, что улучшение качества протеина в рационах откармливаемых бычков молочных пород в разные периоды роста за счёт снижения распадаемости протеина в рубце на 2,5-6,9 способствует увеличению среднесуточного прироста живой массы молодняка на 2,5-16,4 . Увеличение уровня протеина в рационах интенсивно откармливаемых бычков голштинской и абердин-ангусской пород в возрасте от 3 до 12 месяцев в 1,5 раза за счёт повышения скармливания концентратов позволяет существенно повысить среднесуточный прирост живой массы молодняка на 47 и 30 соответственно.Federal State Budgetary Educational Institution of Higher Education Penza State Agrarian University ,Russia, t. (8412) 62-81-51, e-mail: pogosyan.d.gpgau.ru The article presents and summarizes the results of many years of research on the influence of the quality and the level of protein in diets on the growth rate of bull-calves. The studies found that improving the quality of protein in the diets of fattening bull-calves of dairy breeds at different growth periods due to a decrease in protein disintegration in the rumen by 2.5-6.9 contributed to an increase in the average daily gain in live weight of young animals by 2.5-16.4 . An increase in the protein level in the diets of intensively fed calves of Holstein and Aberdeen Angus breeds aged from 3 to 12 months by 1.5 times due to increased feeding of concentrates significantly increased the average daily gain in live weight of young animals by 47 and 30 , respectively.

scholarly journals The “Criollo Negro de la Costa Ecuatoriana” pigs: effect of sex and rearing system on performance, carcass and meat traits

2016 ◽  
Vol 14 (1) ◽  
pp. e0601
Author(s):  
Martín A. González ◽  
Franklin R. Peláez ◽  
Andrés L. Martínez ◽  
Carmen Avilés ◽  
Francisco Peña
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Mineral Composition ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Morphometric Parameters ◽  
Lower Percentage ◽  
Quality Traits ◽  
Daily Gain

<p>The objective of this study was to evaluate the effect of rearing system (confinement, C <em>vs </em>semi-confinement, SC) and sex (barrows <em>vs </em>females) on growth performance, carcass traits and meat quality of “Criollo negro de la costa ecuatoriana” pigs. A total of 32 pigs, 16 barrows and 16 gilts were used. The average daily gain (0.30 kg/day <em>vs </em>0.22 kg/day), slaughter weight (51.4 kg <em>vs </em>43.1 kg), morphometric parameters and weights for the most valuable meat cuts were higher in C pigs than in SC pigs, whereas hot and cold carcass yields were higher in SC pigs than in C pigs. The loin and sirloin percentages from C pigs were lower and higher compared with those SC pigs, respectively. Carcass of C pigs showed higher percentage of fat and lower percentage of lean and bone that SC pigs. The rearing system had scarce effects on meat quality traits and mineral composition. Meat from C pigs showed lower scores for color, brightness, and unctuousness, and higher for metallist taste, juiciness and persistence of flavor than SC pigs. Few sensory attributes of cooking chops were affected by sex. Metallist taste was higher in barrows, while brightness and lard flavor were higher in females. It can be concluded that the rearing system had a significant effect on most of the productive and carcass traits, whereas its effect was limited on the meat traits. Sex had little influence on most of the traits studied.</p>

Features of the infl uence of feed protein supplement Biovitel on the growth and development of steers of Hereford breed

2020 ◽  
pp. 10-17
Author(s):  
E. Kokshanov ◽  
R. Fatkullin
Keyword(s):  
Growth And Development ◽  
Average Daily Gain ◽  
Live Weight ◽  
Feed Additive ◽  
Control Group ◽  
Intensive Rearing ◽  
Feed Protein ◽  
Daily Gain ◽  
Experimental Group

One of the ways to increase meat resources is to improve the condition of livestock on farms in the Russian Federation. This is due to the fact that when the fatness of the animal increases, the meat yield in the carcass increases. The purpose of the researches was to establish the features of the infl uence of the feed protein additive Biovitel on the growth and development of steers of Hereford breed. In order to achieve this purpose two groups of steers-analogs of Hereford breed (control and experimental) at the age of 6 months per 10 head in each have been formed. The time of the experiment was: the preparatory period of 22 days and the main one 275 days. Steers of the control group have received the main farm ration, and steers of the experimental group have received the main ration and feed protein additive Biovitel for 30 days with 10-days interval at the dose of 100 g per head during the sixth month. The results of researches on the infl uence of the feed protein additive Biovitel on the growth and development of steers of Hereford breed have been refl ected in the article. The addition of the feed additive Biovitel to the main ration of the experimental group of steers helped them to achieve a higher live weight and higher average daily gains under the same environments of feeding and housing in all age periods. By the end of the experiment (15 months) the experimental group of steers have reached the live weight of 430,2 kg, which was higher by 19,9 kg or 4,9 % compared to the control group of steers. In order to improve the quality of beef and increase its production more intensive rearing of steers of Hereford breed with the use of feed protein additive Biovitel has been justifi ed. The recommended dose is 100 g per head. This dosage allows you to achieve the average daily gain of 967,5 g and the average live weight of 430,2 kg by 15 months of age, reduce the prime cost and increase the profi tability of beef production.

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