A note on the effect of marketing route on weight loss in lambs sent for slaughter

1987 ◽  
Vol 45 (1) ◽  
pp. 145-148
Author(s):  
D. G. Evans ◽  
A. G. Sains ◽  
I. K. Corlett ◽  
J. B. Kilkenny
Keyword(s):  
Weight Loss ◽  
Environmental Factors ◽  
Live Weight ◽  
Carcass Weight ◽  
Gut Contents ◽  
Feeding System ◽  
Dead Weight ◽  
Auction Markets ◽  
System Maturity

It is widely believed that marketing route—time and distance between farm and abattoir—influences live weight and carcass weight loss in lambs and thus killing out. Killing out s i defined as the ratio of carcass weight to live weight but the value depends upon the live weight and carcass weight used. Differences may exist between the farm live weight immediately before loading, live weight in the market, live weight on arrival at the abattoir and live weight immediately before slaughter. Killing out is influenced by the weight of gut contents, whether the carcass is weighed hot or cold, type of feeding system, maturity (age) of the lamb, breed, conformation and fatness. It may also be influenced by environmental factors such as wetness and fleece contamination. Buyers' estimates of killing out are important when they bid for lambs in auction markets and carcass weight is important in determining price paid to dead-weight sellers.

Quantitative anatomical studies of the composition of the pig at 50, 68 and 92 kg. carcass weight I. Experimental material and methods

1962 ◽  
Vol 59 (2) ◽  
pp. 207-214 ◽  
Author(s):  
A. Cuthbertson ◽  
R. W. Pomeroy
Keyword(s):  
Weight Loss ◽  
Live Weight ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Average Weight ◽  
Large White ◽  
Anatomical Studies ◽  
Fat Deposits ◽  
Intermuscular Fat ◽  
Dissection Technique

1. The object of the experiment was to make a detailed investigation of the carcass composition of Large White hogs at 68, 91 and 118 kg. live weight (i.e. 50, 68 and 92 kg. carcass weight). Ten hogs were dissected at each stage.2. A dissection technique suitable for this investigation is described, involving the dissection of one side into individual bones and muscles, subcutaneous and intermuscular fat deposits, skin, tendon, glands and blood vessels. Some possible modifications of the method for future investigations are also discussed.3. The complete dissection of one side took approximately 110 man-hours and the average weight loss in dissection was 0·798%.

The growth of young cattle fed on dried grass alone and with barley 1. Feed intake, digestibility and body gains

1971 ◽  
Vol 13 (3) ◽  
pp. 461-471 ◽  
Author(s):  
C. R. Lonsdale ◽  
E. K. Poutiainen ◽  
J. C. Tayler
Keyword(s):  
Organic Matter ◽  
Weight Gain ◽  
Dry Matter ◽  
Live Weight ◽  
Dry Weight ◽  
Carcass Weight ◽  
Gut Contents ◽  
Live Weight Gain ◽  
Physical Form ◽  
Productive Potential

SUMMARY1. The primary growth of a sward of S24 perennial ryegrass was harvested between 23 April and 9 May 1968, artificially dried and either chopped or coarsely milled. The two physical forms of grass were wafered either alone or together with 50% by dry weight of rolled, anaerobically stored barley, and given to 7-month-old, Hereford × British Friesian steers in an experiment of 2 × 2 factorial design.2. A representative group of animals was slaughtered at the beginning of the experiment, and the remainder were individually fed ad libitum for 70 days, after which they also were slaughtered. During the feeding period digestibility was determined by total faecal collection from all the animals individually on two occasions.3. Dry-matter intake and live-weight gain were similar on all feeds. The weight of gut contents as a percentage of final live weight was significantly lower and the carcass-weight gain was significantly higher for animals given wafers containing barley compared with those for animals given wafers of grass alone.4. Coarse milling compared with chopping reduced the apparent digestibility of dry matter, organic matter, cellulose and energy; the addition of barley increased the digestibility of organic matter but further reduced that of cellulose.5. The efficiency of conversion of digested energy to empty-weight or carcass gain was similar for wafers containing the two forms of forage, but the digested energy of wafers containing barley was converted to carcass weight with significantly greater efficiency than that of wafers consisting solely of grass.6. Physical separation of the tissues of sample joints failed to show any significant differences in the proportion of fat, muscle and bone as a result of either differences in physical form or the inclusion of barley.7. The results indicate that live-weight gain is an insufficiently sensitive measurement by which to assess the true productive potential of feeds given to ruminants in short-term experiments.

The impact of environmental factors on the occurrence of DFD-type of beef in commercial abattoirs

2020 ◽  
pp. 533
Author(s):  
Krzysztof Kawecki ◽  
Jerzy Stangierski ◽  
Jacek Niedźwiedź ◽  
Bożena Grześ
Keyword(s):  
Environmental Factors ◽  
Ph Value ◽  
Cattle Breed ◽  
Live Weight ◽  
Entire Period ◽  
Carcass Weight ◽  
Production Parameters ◽  
Carcass Conformation ◽  
Cover Class ◽  
The Impact

The aim of the study was to analyse the causes of increased beef pH value measured 36-hours after slaughter (pH ≥ 5.8) taking into account the cattle type and the slaughter season. The pH36 data were collected on 235,555 and 237,563 animals in the season one and season two, respectively, harvested at two commercial abattoirs. The following sets of interactions were significantly associated with the incidence of pH36 >5.80: cattle type x cattle breed; cattle type x ante-mortem resting time; cattle type x hot carcass weight, cattle type x carcass conformation class and cattle type x fat cover class. During the entire period under analysis the overall incidence of pH ≥ 5.8 was 10.89%. In 2017 and 2018 pH ≥ 5.8 amounted to 12.25% and 9.47%, respectively. The type and breed of cattle type and the slaughter season also impacted the following beef production parameters: live weight, hot carcass weight, carcass dressing yield percentage and the carcass conformation and fat cover classes in EUROP classification.

The effect of compensatory growth in sheep on empty body weight, carcass weight and the weights of some offals

1976 ◽  
Vol 87 (2) ◽  
pp. 433-441 ◽  
Author(s):  
W. H. Winter ◽  
N. M. Tulloh ◽  
D. M. Murray
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Body Weight ◽  
Large Intestine ◽  
Compensatory Growth ◽  
The Body ◽  
Carcass Weight ◽  
Gut Contents ◽  
Regression Equations ◽  
Ad Libitum

SummaryThe effects on the body composition of Corriedale wethers of weight loss, compensatory gain and constant body weight are described. Three groups of sheep were grown from 35–63 kg by different paths. The first grew continuously (fed ad libitum). The second and third groups lost 20% and 28% of body weight (restricted intake), respectively, from 48 kg and were then fed ad libitum until they reached 63 kg. Pairs of animals were slaughtered at intervals in each group. A fourth group of sheep was maintained at 48 kg. Analyses of covariance comparing regression equations were used to determine differences in body composition between the first three groups.The compensatory growth rates of both groups which had lost weight were 1·5–2 times those during continuous growth. These increases were associated with an increased gut content of these animals and a concomitant reduction in the proportion of empty body weight (EBW) and carcass weight (CW) in t he full body weight (FBW). Thus, the apparent dressing percentage (CW/FBW x 100) was reduced by 2% during compensatory growth. The carcass length was not reduced during weight loss and its growth in relation to the CW was not affected by treatment. Thus compensatory growth animals had longer carcasses. Similar increases in gut contents and carcass length were found for animals maintained at constant body weight.During developmental growth the proportions of the external offals, organs and gut tissue decreased in relation to the EBW; notable exceptions were the large intestine and caul fat where the proportions remained constant and increased, respectively.The growth of the CW, lungs, large intestine and head were not reversed during weight loss whilst the liver, heart, hide and gut tissues (except the large intestine) all lost more weight during weight loss than they had gained during the growth phase. The proportions of these latter components were increased in relation to the EBW during the ensuing compensatory growth.In general, the composition of animals held at constant body weight was similar to that of animals experiencing compensatory growth at the same weight and age.

Short Communication: The Pre-transport management of antemortem stress in cattle: Impact on carcass yield

2015 ◽  
Vol 95 (4) ◽  
pp. 557-560 ◽  
Author(s):  
B. Grumpelt ◽  
W. Hoffer ◽  
O. Curie ◽  
O. Jones ◽  
K. Jones ◽  
...  
Keyword(s):  
Weight Loss ◽  
Short Communication ◽  
Live Weight ◽  
Nutritional Therapy ◽  
Nutritional Supplement ◽  
Carcass Weight ◽  
Carcass Yield ◽  
Quality Grade ◽  
Pre Treatment ◽  
Transport Management

Grumpelt, B., Hoffer, W., Curie, O., Jones, O., Jones, K., Kimmel, D., McDonald, B., Paterson, R. and Schaefer, A. 2015. Short Communication:The Pre-transport management of antemortem stress in cattle: Impact on carcass yield. Can. J. Anim. Sci. 95: 557–560. Transport and handling of cattle can have a significant impact on carcass weight loss. The purpose of the present study was to examine the effect of providing pre-transport nutritional therapy containing selective amino acids, electrolytes and an energy source, on carcass weight loss. One hundred and ninety British crossbred steers averaging 611 kg were used in the study. The treatment cattle received 1 kg of a nutritional supplement top dressed onto their normal silage diet 24 h prior to transport. Following a 1-h transport period the cattle were processed at a federally inspected beef plant and both hot and cold carcass yield as well as yield grade and quality grade were assessed. Cattle provided with pre-transport nutritional therapy demonstrated a reduction in percentage live weight loss (P<0.01) as well as 1.2% greater hot carcass yield as a proportion of pre-treatment farm weight (P<0.01). The data suggest the use of nutritional support pre-transport is beneficial to carcass yield.

scholarly journals Effect of Postpartum Live Weight Loss on Reproductive Functions in Dairy Cows

1988 ◽  
Vol 29 (2) ◽  
pp. 249-254
Author(s):  
K. Heinonen ◽  
E. Ettala ◽  
M. Alanko
Keyword(s):  
Weight Loss ◽  
Dairy Cows ◽  
Live Weight

EVALUATING THE EFFICIENCY OF FEEDING BROILER CHICKENS OF THE ARBOR ACRES CROSS IN HOT CLIMATIC CONDITIONS OF THE REPUBLIC OF CHAD

2020 ◽  
pp. 72-82
Author(s):  
M.V. LAZKO ◽  
◽  
ADAM A. ABDERAKHIM
Keyword(s):  
Environmental Factors ◽  
Biochemical Parameters ◽  
Broiler Chickens ◽  
Central Africa ◽  
Live Weight ◽  
Climatic Conditions ◽  
Geochemical Conditions ◽  
Blood Biochemical ◽  
The Republic ◽  
The University

The paper presents the results of evaluating the efficiency of feed rations offered to broilers of the Arbor Acres cross, formed taking into account the climatic, geochemical conditions of Central Africa and its native food flora. The study was conducted on the basis of an experimental farm at the University of N’Djamena, the Republic of Chad. In the experiment, the authors used five formulas of feed rations, which are currently used by farms in the Republic of Chad for growing broiler chickens. They mainly contain locally availble ingredients. To increase the resistance of the poultry organism to unfavorable environmental factors, the chickens of the control and experimental groups were given “TETRACOLIVIT” and “AMIN’TOTAL” vitamins. The efficiency of feed rations was evaluated by determining the age dynamics of live weight, average weekly gains in live weight and blood biochemical parameters of broiler chickens of the Arbor Acres cross from 1 to 42 days of life. The formula of feed ration No. 1 proved to be the most effective in terms of the cross productivity.

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.

Effects of the percentage of Texel or Rouge de ľOuest genes in lambs on carcass characteristics and meat quality

1999 ◽  
Vol 69 (1) ◽  
pp. 81-92 ◽  
Author(s):  
A. F. Carson ◽  
B. W. Moss ◽  
R. W. J. Steen ◽  
D. J. Kilpatrick
Keyword(s):  
Meat Quality ◽  
Subcutaneous Fat ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Fat Content ◽  
Carcass Weight ◽  
Ewe Lambs ◽  
Bone Content ◽  
Intermuscular Fat ◽  
Ram Lambs

AbstractThis study investigated the effects of the percentage of Texel or Rouge de l’Ouest (Rouge) genes in lambs (0, 50, 75 or 100%; the remainder being Greyface (Border Leicester × Scottish Blackface)) on lamb carcass characteristics and meat quality. Ewe lambs were slaughtered at 34, 40, 46 and 52 kg and ram lambs were slaughtered at 40, 46, 52 and 58 kg live weight. Dressing proportion increased (P < 0·001) by 0·53 and 0·27 g carcass weight per kg live weight for each 1% increase in Texel or Rouge genes respectively. Carcass conformation classification increased (P < 0·001) by 0·016 and 0·007 units (on a five-point scale) for each 1% increase in Texel or Rouge genes respectively. Carcass fat depth measures were reduced by Texel and Rouge genes such that at a constant fat depth end point, carcass weight could be increased by 0·029 and 0·023 kg for each 1% increase in Texel or Rouge genes. Carcass lean content increased (P < 0·001) by 0·99 and 0·27 g/kg for each 1% increase in Texel or Rouge genes. Subcutaneous fat content was reduced (P < 0·001) by 0·36 and 0·29 g/kg for each 1% increase in Texel or Rouge genes. Intermuscular fat content was reduced (P < 0·01) by 0·38 g/kg per 1% increase in Texel genes, whereas Rouge genes had no effect. Similarly, bone content was reduced (P < 0·01) by Texel genes only (0·31 g/kg per 1% increase in Texel genes). Warner-Bratzler shear force values showed a quadratic effect with increasing Texel and Rouge genes, with an initial decrease from 0 to 50% followed by an increase to 100%. Cooking loss increased (P = 0·05) as the percentage of Rouge genes in lambs increased. Increasing the percentage of Texel or Rouge genes significantly increased L* values (P < 0·01 and P < 0·05 respectively), b* values (P = 0·05 and P< 0·05 respectively) and H° values (P < 0·001).

scholarly journals PENGARUH PEMBERIAN RANSUM KOMERSIL DENGAN PENAMBAHAN BAHAN PAKAN LOKAL TERFERMENTASI AMONIUM SULFAT DAN UREA TERHADAP BOBOT HIDUP, BOBOT KARKAS, DAN BOBOT GIBLET ITIK HIBRIDA JANTAN

2020 ◽  
Vol 4 (3) ◽  
pp. 205-210
Author(s):  
Amir Husein ◽  
Rudy Sutrisna ◽  
Dian Septinova
Keyword(s):  
Ammonium Sulphate ◽  
Live Weight ◽  
Animal Husbandry ◽  
University Research ◽  
Carcass Weight ◽  
Research Material ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Male Hybrid ◽  
Level Of Significance

This research aimed to know the influence of giving a commercial ration with addition of local feed fermented with ammonium sulphate and urea and to find out the best ration on live weight, carcass weight, and giblet weight of male hybrid ducks. This research was carried out in July 2018--August 2018 in the cage of ducks, Department of Animal Husbandry, Faculty of Agriculture, Lampung University. Research material used consisted of 40 male hybrid ducks. This study used a Completely Randomized Design (CRD). Data was analysed using analysis of variance at 5% level of significance. The results showed that there was no different effect of treatments on live weight (1,552--1,717 g / duck), carcass weight (805,6--1.016 g / duck), and giblet weight (106.8--118.45 g /duck) of male hybrid ducks. Keywords: Carcass weight, Giblet weight, Live weight, Male hybrid duck.

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