Estimation of protein, chemical fat and energy content in pigs

1962 ◽  
Vol 4 (3) ◽  
pp. 391-398 ◽  
Author(s):  
Zofia Osińska
Keyword(s):  
Body Weight ◽  
Total Protein ◽  
Energy Content ◽  
Live Weight ◽  
Total Protein Content ◽  
Carcass Quality ◽  
Chemical Analyses ◽  
Large White ◽  
Body Components ◽  
Edible Parts

Complete chemical analyses of all body components of 20 Large White pigs were carried out. At the average live-weight of 90·3 kg. (empty body weight 86·5 kg.) the total protein content was found to be 12·7 kg. and that of the chemical fat 25·4 kg. The edible parts of the carcass (i.e. lean and separable fat) contained only 58·5% (range 55·2–61·3) of the total protein but as much as 85% of the total chemical fat. Simple and multiple correlations were computed between various carcass characters and protein, chemical fat and energy content. The results indicate that it may be possible to obtain fairly accurate estimates of the chemical composition and energy content of the edible parts of the carcass, of the whole carcass, and of the empty body by methods based on various systems of assessing the carcass quality.

Further studies of the effect of dietary energy content on the voluntary intake of pigs

1968 ◽  
Vol 10 (1) ◽  
pp. 85-91 ◽  
Author(s):  
J. B. Owen ◽  
W. J. Ridgman
Keyword(s):  
Energy Content ◽  
Time Lag ◽  
Live Weight ◽  
Experimental Period ◽  
High Energy ◽  
Low Energy ◽  
Carcass Quality ◽  
Large White ◽  
Short Period

1. Twenty-seven Large White pigs from three litters were involved in a 33 factorial experiment in which they were given three pelleted diets containing 0, 10% and 20% of dry sawdust during each third of an experimental period ranging from 29·5 to 118 kg live weight. The effects of these treatments on dry-matter intake and rate of growth in each sub-period and on the final carcass quality of the pig were studied.2. The results confirmed a previous finding that pigs developed a compensatory increase in intake in response to diets containing increasing amounts of sawdust, but that in small pigs this operates very poorly and leads to much retarded growth on the high sawdust diets.3. The compensatory intake mechanism took some time to develop after the pig had been put on to the sawdust diets, the delay being much longer in the smaller pig. Similarly, when the pigs were returned to high energy diets some time elapsed before intake returned to normal. During this time lag the pigs grew faster, as with compensatory growth, than when they had not previously been subjected to low energy diets.4. It is concluded that long-term observations must be made in order to investigate the nutrition of pigs fed ad libitum.5. Although energy intake can be restricted by giving low energy diets for a short period, this does not seem to improve carcass quality.

A note on the protein content of the empty body of young Polish Black-and-White Lowland bulls

1972 ◽  
Vol 14 (1) ◽  
pp. 119-122 ◽  
Author(s):  
Zofia Osińska ◽  
Aleksandra Ziołecka
Keyword(s):  
Protein Content ◽  
Total Protein ◽  
Live Weight ◽  
Total Protein Content ◽  
Weight Range ◽  
Black And White ◽  
Edible Parts

SUMMARYData on the protein content of the empty body were obtained for 44 young Polish Black-and-White Lowland bulls ranging from 10-day- old calves to bulls more than 400 kg live weight. The percentage of protein of the empty body was found to be practically constant (19–19·5%) over the weight range investigated. Less than a half (up to 48 %) of the total protein content was found in the edible parts of the carcass.

The effect of ethanol on some hematological parameters of the australian red claw crayfish (Cherax quadricarinatus)

2022 ◽  
pp. 85-91
Author(s):  
D. Skafar ◽  
D. Shumeyko
Keyword(s):  
Body Weight ◽  
Total Protein ◽  
Hematological Parameters ◽  
Group Versus ◽  
Control Group ◽  
Total Protein Content ◽  
Cherax Quadricarinatus ◽  
Total Hemocyte Count ◽  
Red Claw Crayfish ◽  
Experimental Group

Purpose: to study the effect of ethanol on the parameters of THC, the percentage of granulocytes and total protein in the hemolymph of the Red claw crayfish (Cherax quadricarinatus).Materials and methods. The object of this experiment was 26 males of the Australian red-clawed crayfish (Cherax quadricarinatus) weighing from 23 to 83 g. The individuals were evenly divided into two experimental groups - with an injection of ethanol and a control group without an injection of 13 crayfish for each group. The injection dose was 2515 mg per 100 g of body weight. A day after the introduction of ethanol, hemolymph was taken with a syringe from the ventral sinus, the syringe was pre-washed with a 4% EDTA-Na2 solution. Three parameters were determined: the total hemocyte count (THC), percent granulocytes and percent total protein content. Counting of hemocytes and determination of granulocytes were performed in a Goryaev chamber under a light microscope. The total protein was determined by the refractometric method.Results. Differences in THC and total protein between the groups were statistically unreliable (p>0,05). THC in the experimental group is 36% more than in the control group. The total protein after the introduction of ethanol actually increased by 0,7%, and relatively by 14%. There were statistically different indicators of the proportion of granulocytes (p<0,05) - the average value of 33,1% in the experimental group versus 24,5% in the control group. A reliable (p<0,05) strong feedback was revealed between the total protein and the mass of individuals in both experimental groups, while in the experimental group there is a visible shift in the values of dependent hemolymph indicators towards an increase in smaller individuals.Conclusion. A single injection of ethyl alcohol with a dosage of 2515 mg per 100 g of body weight into the hemolymph of C. quadricarinatus does not cause significant changes in the THC and total protein after 24 hours. At the same time, the proportion of granulocytes actually increases by 9%, relative to 37%. This may indicate that granulocytes are involved in the formation of cancer defense mechanisms when exposed to toxic substances. The effect of different dosages of ethanol injections and the duration of its effect on hematological parameters requires additional consideration. It is necessary to investigate its effect on other indicators, such as the pH and buffer capacity of the hemolymph, the concentration of hemocyanin, glucose, lactates and calcium.

Effects of feeding level and starvation on growth and water and protein content in juvenile redclaw crayfish, Cherax quadricarinatus (von Martens)

1996 ◽  
Vol 47 (5) ◽  
pp. 745 ◽  
Author(s):  
H Gu ◽  
AJ Anderson ◽  
PB Mather ◽  
MF Capra
Keyword(s):  
Body Weight ◽  
Protein Content ◽  
Water Content ◽  
Total Protein ◽  
Simultaneous Increase ◽  
Total Protein Content ◽  
Body Protein ◽  
Cherax Quadricarinatus ◽  
Feeding Level ◽  
Loss Of Weight

Effects of feeding level and starvation on growth, water content and protein content were examined in juvenile Cherax quadricarinatus. Gain in body weight was positively related to feeding level. An increase in feeding level resulted in a decrease in water content and an increase in protein content. Although the majority of juveniles were able to tolerate starvation for at least 12 days, deprivation of feeding caused a loss of weight and a gradual decrease in protein content combined with a simultaneous increase in water content. Total protein content was reduced by 3.9% in juveniles starved for three days and by 8.3% in those starved for 12 days. Normal body protein content, however, was recovered within six days after subsequent feeding in juveniles that were deprived of food for 12 days.

Single cereal diets for bacon pigs 1. The effects of diets based on barley, wheat, maize meal, flaked maize or sorghum on performance and carcass characteristics

1969 ◽  
Vol 11 (3) ◽  
pp. 325-335 ◽  
Author(s):  
D. J. A. Cole ◽  
E. G. Clent ◽  
J. R. Luscombe
Keyword(s):  
Energy Content ◽  
Carcass Characteristics ◽  
Live Weight ◽  
The Other ◽  
Carcass Quality ◽  
Digestible Energy ◽  
Maize Meal ◽  
Low Levels ◽  
Amino Acid Balance

SUMMARYTwo experiments were carried out to compare the performance and carcass quality of pigs given diets based on barley, wheat or maize meal, and another two experiments comparing these cereals, flaked maize and sorghum. In general, differences in the utilization of feed for live-weight gain could be related to differences in the digestible energy content of the cereals used in the diet, although in some experiments pigs behaved atypically on individual diets. Flaked maize was consistently inferior to the other cereals in the efficiency of conversion of its digestible energy, possibly because of its poorer amino acid balance and its low levels of lysine and tryptophan in relation to energy. Differences between experiments in the performance of pigs fed on the various diets are also discussed. Differences between treatments in killing-out percentage and predicted lean percentage were small, and carcasses of pigs from all treatments were acceptable for bacon curing.

scholarly journals FATTENING AND MEAT QUALITIES OF GEESE OF OBROSHIN SELECTION WITH GRAY AND WHITE PLUMAGE

2021 ◽  
Vol 22 (1) ◽  
pp. 243-250
Author(s):  
L. V. Ferenc ◽  
M. D. Petriv
Keyword(s):  
Total Protein ◽  
Research Work ◽  
Live Weight ◽  
Total Protein Content ◽  
Mass Selection ◽  
Group I ◽  
Breed Group ◽  
Significant Difference ◽  
Males And Females ◽  
Group Ii

The research work provided a solution to the problem of preserving the gene pool of Obroshyn gray (OS) and Obroshyn white (OB) geese, which will improve and enhance the valuable qualities of the original flock of geese, gain the desired economic characteristics and thus ensure the competitiveness of the industry in modern conditions. The research was conducted in the laboratory of small livestock ISGKR NAAS and on the basis of SE DG "Miklashiv". The main method of breeding is the selection and selection of individuals with high productive qualities in order to obtain the same type of bird that would meet the planned performance parameters. Selection work was carried out by individual mass selection, aimed at consolidating the standard for each breed group of traits. Before the beginning of the breeding period, males and females of both groups were individually assessed by the exterior, typical plumage, live weight. It was found that both Obroshyn gray and Obroshyn white geese were well selected for productive characteristics and showed high fattening and meat qualities. All birds are well adapted to the natural conditions of the western region. Body sex measurements (chest circumference, torso length, keel, and metatarsus) were higher in males of the Obroshyn gray breed group of geese. Males at different ages had higher rates than females. Obroshyn gray geese (group I) outperformed their peers from group II in terms of meat qualities, the weight of uncorked and gutted carcass, and yield of edible parts. The pre-slaughter live weight of carcasses of males of group I (OS) was 4722 g and prevailed over peers of group II (OB) by 2.94%, and the live weight of females was 4149 g and was higher by 4.19%. It was found that the difference in the number of erythrocytes in males and females was insignificant and almost does not change with age, and hemoglobin on the contrary - increases with age. Males in all study periods had higher serum total protein compared to females. The lowest rate was in males and females аt 4 weeks of age, however, there was no statistically significant difference between the groups in the number of erythrocytes, hemoglobin, and total protein content.

An empirical model for estimating feed allowances for breeding sows

1989 ◽  
Vol 1989 ◽  
pp. 33-33
Author(s):  
C T Whittemore
Keyword(s):  
Body Weight ◽  
Empirical Model ◽  
Feed Intake ◽  
Live Weight ◽  
Weight Changes ◽  
Maternal Weight ◽  
Maternal Body ◽  
Large White ◽  
Model Components

Provision of nutrient allowances for sows necessitates a view of requirements for growth and reproductive efficacy, and a method to predict response to the nutrients provided. An experiment involving 102 Large White x Landrace sows given a diet of 13.2MJ DE and 162g CP per kg over 4 parities has been used to derive some of the necessary model components. If live weight and fatness at first conception are 125kg and 14mm P2 respectively, and maternal body weight at term parity 4 is 250kg, and when weaning to oestrus interval (days) = 27(±5) - 1.3(±0.4)P2(mm) at weaning: then the equations, change in P2(mm) in 28-day lactation = -0.28(±0.82) - 0.27(±0.03)P2 at parturition +0.037(±0.003) lactation feed intake - 0.50(±0.06) number of piglets at weaning, and change in maternal live weight (kg) in 28-day lactation = -3.8(±4.6) - 0.15(±0.02) maternal weight at parturition + 0.36 (±0.02) lactation feed intake - 3.3(±0.3) number of piglets at weaning, can be used to predict fat and live weight changes in lactation.

A comparison of tissue development in Pietrain and Large White pigs from birth to 64 kg live weight 2. Growth changes in muscle distribution

1974 ◽  
Vol 19 (3) ◽  
pp. 377-387 ◽  
Author(s):  
A. S. Davies
Keyword(s):  
Body Weight ◽  
Entire Range ◽  
Live Weight ◽  
Heart Weight ◽  
White Female ◽  
Large White ◽  
Muscle Weight ◽  
Growth Changes ◽  
Allometric Analysis ◽  
Total Muscle

SUMMARYHalf carcasses of 18 Pietrain and 18 Large White female pigs were each dissected into 93 muscle units. An allometric analysis of the weight of these units relative to total muscle revealed increasing craniocaudal and distoproximal growth gradients, which were more pronounced in the Pietrain.The greater total weight of muscle, shown previously for the Pietrain at any given body weight over the range studied, was not due to higher muscle weights in any particular region at birth, but at 60 kg body weight was due to heavier high impetus muscles. Heart weight relative to total muscle weight was higher for the Large White over the entire range.It is concluded that for the animals studied the changes in muscle distribution are related to the functional demands of an increase in body size, and that the muscle distribution of pigs can differ between breeds.

Breed and sex differences in equally mature sheep and goats 2. Body components at slaughter

1987 ◽  
Vol 45 (2) ◽  
pp. 261-276 ◽  
Author(s):  
M. L. Thonney ◽  
St C. S. Taylor ◽  
J. I. Murray ◽  
T. H. McClelland
Keyword(s):  
Body Weight ◽  
Sex Differences ◽  
Random Sample ◽  
Alimentary Tract ◽  
Live Weight ◽  
Gut Content ◽  
Fat Depots ◽  
Mesenteric Fat ◽  
Body Components ◽  
Perirenal Fat

ABSTRACTAnimals from Soay, Welsh Mountain, Southdown, Finnish Landrace, Jacob, Wiltshire Horn and Oxford Down sheep breeds and a breed of feral goats were slaughtered when 0·40, 0·52, 0·64 or 0·76 of mature body weight. The effects of stage of maturity, breed and sex were examined in the following traits: gut content as a proportion of slaughter weight; blood, omental plus mesenteric fat, perirenal fat, alimentary tract, ‘remainder’ of non-carcass parts and hot carcass, each as a proportion of fleece-free empty body weight; also shoulder, rib, loin and gigot joints and their commercially higher-valued (prime) and lower-valued cuts, each as a proportion of carcass weight.As a proportion, gut content declined as animals matured, as also did blood, alimentary tract, ‘remainder’, prime shoulder, shank and prime gigot. Increasing proportions were internal fat depots, the hot carcass, rib, loin and gigot flank. Males accumulated significantly less internal fat and more shoulder than females.When equally mature in live weight, males had proportions that were significantly lower for perirenal fat, rib and gigot and higher for shoulder and pelt plus head, feet and organs.There were significant inter-breed regressions on mature body weight. The proportion of blood, alimentary tract, pelt plus head, feet and organs, and prime gigot declined with breed size, while hot carcass, brisket, rib and loin proportions increased. These regressions were attributed to a non-random sample of breeds. The small Soay breed had proportions of internal fat and hot carcass which were well below average, and higher proportions of blood, alimentary tract and ‘remainder’. Soay sheep also had a higher proportion of commercially higher-valued cuts in the carcass. In contrast, the large Oxford Down breed had low proportions of non-carcass components (except alimentary tract) and high proportions of lower-priced cuts and prime rib. Feral goats had a greater, and Southdown sheep a smaller, proportion of gut content than other breeds.

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