scholarly journals A comparison of carcass proportions in Czech Pied and Montbeliarde bulls with a high carcass weight

2011 ◽  
Vol 50 (No. 3) ◽  
pp. 109-115 ◽  
Author(s):  
G. Chládek ◽  
J. Žižlavský ◽  
J. Šubrt

The aim of the experiment was to compare the carcass composition of 20 Montbeliarde bulls (M) and 20 Czech Pied bulls (C). The carcass weight of the animals in one group varied minimally and was about 380 kg. The Montbeliarde bulls showed a higher growth rate, expressed by a significantly lower (P < 0.01) age at slaughter (562.6 vs. 626 days) while the live weight (682.9 vs. 690.6 kg) and carcass weight (380.4 vs. 382.6 kg) were comparable, which resulted in a significantly higher (P < 0.01) daily weight gain (1.142 vs. 1.045 kg) and net weight gain (0.676 vs. 0.615 kg). The Montbeliarde bulls showed a greater (P < 0.05) height at rump (144.0 vs. 140.2 cm), worse carcass conformation according to SEUROP (3.24 vs. 2.84), lower proportion of forequarter (44.7 vs. 45.7%) and higher proportion of hindquarter (55.3 vs. 54.3%). As for the carcass composition, no significant inter-breed differences were found in weights and proportions of shanks, meat trimmings, separable fat, bones, round, loin, filet, flank with rib, flank, shoulder and chuck. The Montbeliarde bulls had a significantly lower (P < 0.05) weight and proportion of neck (10.1 vs. 11.1 kg and 5.4 vs. 5.9%) and weight of brisket and rib (17.6 vs. 18.7 kg) and proportion of brisket and rib (9.4 vs. 9.9%, P < 0.01).    

Author(s):  
Gustav Chládek ◽  
Jiří Žižlavský

Czech Pied bulls (C, n=18) and Montbeliarde bulls (M, n=18) were fattened up to the live weight of 680 kg in identical conditions with the aim to compare their meat performance. Mean values of the observed meat performance characteristics were as follows: slaughter weight 682.1 kg, age at slaughter 593.8 days, daily weight gain 1.088 kg, carcass weight 378.2 kg, net weight gain 0.640 kg, dressing percentage 55.4%, weight of hide 59.3 kg, weight of head and tongue 20.6 kg, weight and proportion of kidney fat 14.9 kg and 2.18%, carcass conformation score 3.06, carcass fatness score 2.20 and weight of the right side of carcass 185.9 kg. The weight and proportion of some parts of the right side of carcass were as follows: forequarter 84.1 kg and 45.2%, hindquarter 101.8 kg and 54.8%, total weight of meat 145.5 kg and 78.2%, bones 35.0 kg and 18.9%, separable fat 3.87 kg and 2.08% and hindquarter to forequarter ratio 1.21. Montbeliarde bulls showed a significantly greater (POur results showed higher growth rate in Montbeliarde bulls; also, their further growth potential was higher than in Czech Pied bulls. The rest of the observed characteristics of meat performance, including carcass composition, were similar in both breeds and were not negatively affected by a high slaughter weight.


1993 ◽  
Vol 57 (2) ◽  
pp. 253-261 ◽  
Author(s):  
J. E. Vipond ◽  
G. Swift ◽  
R. C. Noble ◽  
G. Horgan

AbstractThe effect of grazing clover on ewes and lambs was studied using nitrogen-fertilized grass (G) and grass/white clover pastures (GC) containing proportionately 0·18 clover. Carcasses of lambs grazed on GC were significantly heavier than carcasses of lambs grazed on G pastures. An interaction with weaning occurred. Carcasses from lambs grazed on GC for 53 days post weaning were 2·3 kg heavier (F < 0·01) but lambs slaughtered at weaning had similar carcass weights. Diet had no effect on relative joint components of carcasses. The effect of clover in the diet on carcass weight was attributed to higher levels of protein retention.Analysis of the fatty acid composition of intramuscular and subcutaneous and perirenal lipids indicated small but significant effects of diet. Lean tissue lipids of lambs grazing clover showed significant increases in C18:2 and reduced C20: 5 fatty acids. In tissue fats there were small increases in C14:0, C16:0 and C18:2 with reduced C18:1 content.Twin suckled lambs grazing GC for 94 days from turn-out in early April showed increased live-weight gain over lambs on G of 336 v. 287 g/day (s.e.d. 84; P < 0.001). Post weaning live-weight gain of lambs was 173 and 221 g/day on G and GC respectively. Sward height was maintained at 5.18 and 5.24 (s.e.d. 0.075) cm on G and GC paddocks by adjusting ewe numbers. GC pastures carried proportionately 0.82 of the stock on G pastures but output of lamb was similar at 1289 and 1247 kg/ha for G and GC respectively.Results showed that the production penalty of lower stocking rate associated with grass/clover v. grass fertilized with 190 kg nitrogen per ha was ameliorated by higher lamb live-weight gain and carcass weight without change in joint composition or nutritionally significant change in fatty acid composition of carcass tissues.


1970 ◽  
Vol 27 (2) ◽  
pp. 62-73 ◽  
Author(s):  
N Sultana ◽  
SMJ Hossain ◽  
SA Chowdhury ◽  
MR Hassan ◽  
M Ershaduzzaman

Twenty four castrated native sheep were grouped (six/group) into four: T1 >3 to ≤ 6; T2 > 6 to ≤ 9; T3 >9 to ≤12 and T4 >12 to ≤ 15 months. Through out the 63 days of experimental period, animals were offered ad libitum urea (3%), molasses (15%) and straw (82%) as a basal diet with concentrate mixture [14% crude protein (CP) & 11.5 MJ metabolizing energy (ME) per kg Dry Matter (DM)] @ 1% of live weight. Five days metabolic trial was conducted towards the end of the feeding trial. Besides, fortnightly live weight change, daily nutrient intake, carcass yield and carcass characteristics were studied. Daily weight gain decreased (P<0.05) with the increasing in age and the growth rate were 79, 63, 55 and 44g/day for T1, T2, T3 and T4, respectively. Higher growth rate in T1 was due to animal's inherent self-accelerated phase of growth. Feed conversion ratio (FCR; kg feed/kg live weight gain) was significantly (P<0.001) better in T1 (9.2) followed by T2 (13.8), T3 (17.7) and T4 (21.7). Cost per kg of carcass production was lower in T1 (Taka: 239), but the production cost increased in T2 (Taka: 357), T3 (Taka: 440) and T4 (Taka: 515). DM intake (g/kg W0.75) decreased with the increase in age and weight. For each gram increased in live weight gain, it required 7.7 kJ ME and animals achieved zero live weight gain (maintenance energy level) at 377 kJ/kg W0.75/d ME intake. Slaughtered weight, warmed carcass weight and dressing yield (%) of native sheep increased with advancement of age. Dressing yields were 48.5, 49, 51.4 and 55.5% for T1, T2, T3 and T4, respectively. Fat percent increased with increasing age and body fat as percent of live weight were 5.6, 7.7 15.5 and 20.6, respectively for the T1, T2, T3 and T4. As a part of total carcass, the proportional yield of tender loin and hind leg chump, most valued retail cut, decreased with the increased animal age. In the present trial, body weight gain at early stage (6-8 months of age) of life was more economical than at the later stage of life. It is suggests that the optimum market/slaughter age for native sheep maintained under these feeding and management would be at around eight months of age. DOI: 10.3329/bvet.v27i2.7556 Bangl. vet. 2010. Vol. 27, No. 2, 62-73


1990 ◽  
Vol 50 (2) ◽  
pp. 261-269 ◽  
Author(s):  
D. Zygoyiannis ◽  
K. Stamataris ◽  
S. Kouimtzis ◽  
J. M. Doney

ABSTRACTNine male and nine female lambs each from the Karagouniko (K), Chios (C) and East Friesland (F) breeds were weaned at a mean age of 50 days and were killed over a commercial range of live weight from 16 to 44 kg (carcass weights 6 to 22 kg).Carcass weight was linearly related to fasted live weight prior to slaughter (r = 0·994). There were significant but small differences between breeds in mean weight of lungs, pelt and internal fat. The carcass components of bone, muscle and fat tissues were related to carcass weight by linear or quadratic regression. Adjusted to mean carcass weight, the mean weight of bone did not differ between breeds (2·82 kg, s.e. = 0·056 at 12·8 kg carcass). The K and C lambs had significantly less muscle than the F lambs (6·77, 6·63 and 8·20 kg, respectively, s.e.d. = 0·094) and more fat (2·87, 2·95 and 1·29 kg, respectively, s.e.d. = 0·017) when compared at mean carcass weight. The breed differences were significant over the whole range whether compared at equal weight or at an equal proportion of estimated mature weight. At the same proportion of carcass fat, corresponding to the United Kingdom market average (250 g/kg) the calculated carcass weights were 16, 17 and 30 kg, respectively, for K, C and F lambs.It is concluded that the Friesland breed differs from many others in the proportions of muscle or fat at corresponding carcass weights but this difference is not a general characteristic of dairy sheep. Comparison of breeds at defined proportions of carcass components, as determined by market standards, can be effectively achieved by serial slaughter over a suitable weight range.


2021 ◽  
Vol 9 (1) ◽  
pp. 35-39
Author(s):  
N. A. Begma ◽  
O. I. Musich

The improvement of production indicators (feed conversion ratio, average daily body weight gain, growth rate, etc.) in animal husbandry implies a high energy requirement. Such a need can only be met by including fats in the diet. Fat is the main and most efficient source of feed energy, but at the same time, one of the most expensive feed component. Using a fat emulsifier is an increase in the quality of the obtained product and a decrease in its cost. The addition of synthetic emulsifiers is a relatively new opportunity to increase fats’ active surface compared to other widely used feed additives. This reduces the cost for oil in the feed and also a chance to reduce feed total cost. By increasing fats’ active surface, emulsifiers expand the action of lipases and promote micelles formation. Higher the fat percentage in the diet, lower the percentage of its absorption. In high-energy diets without the use of complex emulsifiers, from 36% to 70% of the fat introduced into the feed is not absorbed and is excreted from the body. The beneficial effect of emulsifiers is that the digestibility of fat decreases, and it grows with an increase in the fat level in the diet. An assessment of the effect of the «Natufactant» feed additive on the growth rates of young pigs has been carried out. The maintenance and feeding of pigs were carried out in accordance with the technology adopted on the farm. The nutritional value of the main diet that is used on the farm, as well as after the inclusion of the feed additive «Natufactant», were determined. To conduct research according to the principle of analogs were taking into account the breed, live weight, and general physiological state, two groups of animals of a large white pig breed were created, 25 animals in each, with a live weight of 28 kg. The first group served as a control, and in addition to the main diet, the multicomponent emulsifier «Natufactant» was administered to the piglets of the research group at a dose of 250 g/t of feed, which was given together with the feed once per day. It was found that high average daily gains were obtained from animals to which «Natufactant» was added at the rate of 250 g per 1 ton of compound feed from the first day of the experiment and for 60 days in a row. As a result of the production check, it was found that the introduction of a feed additive into the diet of young pigs made it possible to increase the gross increase in animals’ live weight in comparison with the control, by 10.7 centners with the same level of feeding. New influence aspects of the fat emulsifier usage on the pigs’ physiological state and productivity were disclosed. It has been proven that the inclusion of the «Natufactant» feed additive into the animals’ diet stimulates the digestion processes and assimilation of basic nutrients, improves their physiological state, and increases the average daily weight gain of pigs by 15.3%. The solution to the problem of fats’ digestibility is the creation of new emulsifiers by searching for new molecules and developing effective complexes that have a synergistic effect when one component enhances the work of another. In order to significantly increase the pigs’ productivity and thereby increase the production of pork, it is necessary to ensure sufficient and adequate feeding of animals, taking into account the standards of lipid nutrition. It will also help to improve product quality and reduce production costs.


Author(s):  
A. Veres ◽  
M. Kryvyi

The scientific results of the body weight dynamics, the multiplicity of its increase, the average daily weight gain, the relative growth rate and the exterior indicators are presented. The brewers waste is a high-protein product with a high content of carbohydrates, including fiber.For the research, three groups of Jersey breed were formed on the principle of the analogue group: the first was control, the second and the third – experimental. Their rations were introduced by 15 % and 20 % of dry brewers waste from the total diet, respectively. It was established that the live weight of the experimental cows from the 2nd group was 9.3 times bigger. The live weight of the experimental cows from the 1st and 3rd group increased 9 times. The cows from the 2nd group had the highest average daily weight gain (811.4 g) in the period from 2 to 6 months. It was 3.2 % times more than in the control group and 7.4 % times more than in the 3rd experimental group. The cows from the 2nd experimental group had the highest relative growth rate (85.7 %) in the period from 2 to 6 months which was 2.2 % times more than in the 1st control group and 4.2% times more than in the 3rd experimental group. In the period from 6 to 12 months, the 2nd experimental group had the highest average daily weight gain (671.4 g), which was 2.1 % more than in the 1st control group and 3.5 % more than in the 3rd experimental group. From 6 to 12 months the relative growth rate in all groups was almost the same and ranged from 54.2% – 54.7 %. At the age of 12 months, the 1st control group had greater index (120.4). The 3rd experimental group had 119.6 and the 2nd – 118.6. The 2nd group of the same age had better shooting index than the 1st control group 0.7 % times more and the 3rd group 1.4 % times more. It indicated the better development of the body weight. Key words: dynamics, weight gain, repair heifers, Jersey breed, measurements, indicators.


1991 ◽  
Vol 53 (2) ◽  
pp. 237-242 ◽  
Author(s):  
J. M. Suttie ◽  
I. D. Corson ◽  
P. D. Gluckman ◽  
P. F. Fennessy

AbstractInsulin-like growth factor 1 (IGF1) correlates with antler growth and body growth in penned red deer stags. The present study aimed to investigate the relationships among plasma concentration of IGF1, body growth and carcass composition in grazing stags. Twenty-eight 10-month-old stags were kept at pasture from September to February. They were bled, weighed and their antlers measured fortnightly. Plasma was analysed for total IGF1. All stags were slaughtered in February (aged 15 months); organ weights were recorded and the carcasses were analysed chemically for water, fat and ash. The stags began the study weighing 60·7 (s.e. 1·4) kg and were 96·3 (s.e. 2·0) kg at the end. They grew rapidly in spring and early summer but growth rate slowed in mid summer before increasing again in late summer.Total plasma 1GF1 for each stag throughout the study correlated positively with antler length (P < 0·001), total live-weight gain (P < 0·001), hot carcass weight (P < 0·01), fat-free carcass weight (P < 0·01), carcass fat weight (P > 0·05) and carcass fat percentage (P > 0·05). Thus IGF1 correlated significantly with all measures of body weight except fat. IGF1 correlated positively with antler growth rate (P < 0·001) calculated individually for each stag during each fortnight. IGF1 correlated positively with the spring phase of live-weight gain calculated as above (P < 0·001) but negatively (P < 0·01) with live-weight gain during the late summer growth phase. The relationships between IGF1 and growth in penned stags also pertain in grazing animals, and in addition 1GF1 is closely associated with carcass lean mainly via an overall effect on body size.


1998 ◽  
Vol 66 (1) ◽  
pp. 129-141 ◽  
Author(s):  
R. W. J. Steen ◽  
D. J. Kilpatrick

AbstractA 3-year experiment has been carried out to compare systems of bull beef production involving pasture grazing and continuous storage feeding and to examine the effects of sward surface height and concentrate input from 5·5 to 11 months of age on grazing behaviour, growth rate and body composition at the end of the treatment period and on subsequent growth rate and carcass composition at commercial slaughter weight. Animals were either set-stocked at pasture to maintain sward surface heights of 6·5 and 10·0 cm or were given grass silage (725 g digestible organic matter per kg dry matter (DM)) supplemented with 0·8, 1·6, 2·4, 3·2 and 4·0 kg cereal-based concentrates (188 g crude protein per kg DM) per head daily. Half of the animals grazed at each sward height were given 1 -6 kg concentrates per head daily while the remainder received no supplement. A total of 255 continental beef breed × Friesian calves which were initially 198 kg live weight were used. From 11 months of age until slaughter at a mean live weight of 620 kg all animals were given grass silage supplemented with 3 kg cereal-based concentrate DM per head daily.Reducing sward surface height from 10·0 to 6·5 cm increased the proportion of time spent grazing (P < 0·001), reduced the proportion of time involved in other activities and reduced live-weight gain (P < 0·001) from 1·21 to 0·84 kg/day. Offering concentrates at pasture reduced (P < 0·001) the proportion of time spent grazing (the effect being greater with the animals grazing the shorter swards) but did not affect the performance of the animals grazing the taller swards and produced only a modest increase in the live-weight gain (70 g/kg concentrates) of those grazing the shorter swards. At the end of the treatment period, the carcasses of the animals which had been given silage contained proportionally 0·39 more lipid than those of animals which had been at pasture and had the same growth rate. Differences in live weight at 11 months of age due to differences in feeding from 5·5 to 11 months were largely retained until the end of a 7-month period of realimentation while differences in carcass composition at II months were eliminated by slaughter at a constant live weight of 622 kg.


1989 ◽  
Vol 113 (2) ◽  
pp. 183-187 ◽  
Author(s):  
J. J. Bass ◽  
P. J. Fowke ◽  
D. M. Duganzich ◽  
A. J. Peterson

SUMMARYSilastic implants of different lengths (0·5–4 cm) containing oestradiol were implanted in wether or ewe lambs, which were slaughtered at 14 or 23 weeks of age. Live weight gain and carcass weight of lambs was increased marginally by oestradiol treatment. Oestradiol decreased the percentage of fat in the carcass, while increasing the percentage of carcass water. Older lambs had a greater response to oestradiol treatment for the weights of the carcass protein and ash. The female reproductive system was affected by oestradiol with the ovarian weights being depressed and the uterine weights increasing. The uterus was especially sensitive to oestradiol at 14 weeks of age. Oestradiol increased the weight of protein in lamb carcasses, especially in the older lambs of this study.


2017 ◽  
Vol 16 (2) ◽  
pp. 29-42
Author(s):  
R. A. SOBAYO ◽  
S. B. MUHAMMAD ◽  
O. O. OSO ◽  
O. M. SOGUNLE ◽  
Y. A. ADEJOLA ◽  
...  

This study was conducted to investigate the effects of feeding diets containing Neem Leaf Meal (NLM), Garlic Meal (GM) and their combinations (NLM + GM) on growth performance and carcass yield of finishing broiler. A total of 180 day-old Cobb broiler chickens were divided into twelve groups of fifteen chicks with three replicate of five chicks each. The diet contained NLM, GM and NLM + GM at four levels of inclusion (0mg/kg, 500mg/kg, 1000mg/kg and 1500mg/kg). The experiment was arranged in a 3 × 4 factorial layout in a completely randomized design. Additives and levels of inclusion had no significant (P>0.05) influence on performance parameters except feed intake which was influenced (p<0.05) by NLM + GM and 1000mg/kg levels of inclusion. Final live weight (2516.67g/bird), weight gain (1742.00g/bird), daily weight gain (62.2g/bird/day) and feed conversion ratio (2.32) were improved (p<0.05) at 1500mg/kg levels of inclusion of NLM + GM. Thigh (11.68%), wings (8.44), neck (4.23%) and gizzard (2.13%) of birds fed GM were improved (P<0.05) than those of NLM. Carcass weight was influenced (p<0.05) by additives at various inclusion levels with wings (9.01%), head (3.39%), neck (4.52%), shanks (4.49%) and gizzard (2.42%) highest (p<0.05) in birds fed GM at 1500mg/kg levels of inclusion than those of 0mg/kg levels of inclusion. It was concluded that the use of NLM + GM as additives yielded commendable result on performance and carcass weight of finishing broiler birds   This study was conducted to investigate the effects of feeding diets containing Neem Leaf Meal (NLM), Garlic Meal (GM) and their combinations (NLM + GM) on growth performance and carcass yield of finishing broiler. A total of 180 day-old Cobb broiler chickens were divided into twelve groups of fifteen chicks with three replicate of five chicks each. The diet contained NLM, GM and NLM + GM at four levels of inclusion (0mg/kg, 500mg/kg, 1000mg/kg and 1500mg/kg). The experiment was arranged in a 3 × 4 factorial layout in a completely randomized design. Additives and levels of inclusion had no significant (P>0.05) influence on performance parameters except feed intake which was influenced (p<0.05) by NLM + GM and 1000mg/kg levels of inclusion. Final live weight (2516.67g/bird), weight gain (1742.00g/bird), daily weight gain (62.2g/bird/day) and feed conversion ratio (2.32) were improved (p<0.05) at 1500mg/kg levels of inclusion of NLM + GM. Thigh (11.68%), wings (8.44), neck (4.23%) and gizzard (2.13%) of birds fed GM were improved (P<0.05) than those of NLM. Carcass weight was influenced (p<0.05) by additives at various inclusion levels with wings (9.01%), head (3.39%), neck (4.52%), shanks (4.49%) and gizzard (2.42%) highest (p<0.05) in birds fed GM at 1500mg/kg levels of inclusion than those of 0mg/kg levels of inclusion. It was concluded that the useof NLM + GM as additives yielded commendable result on performance and carcass weight of finishing broiler birds Keywords: Neem, garlic, broilers, performance, carcass characteristics. 


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