The effect on the performance of growing pigs of the level of meal fed in conjunction with an unrestricted supply of whey

1963 ◽  
Vol 30 (1) ◽  
pp. 35-45 ◽  
Author(s):  
K. G. Mitchell ◽  
P. H. Sedgwick
Keyword(s):  
Growth Efficiency ◽  
Growing Pigs ◽  
Superior Performance ◽  
Carcass Quality ◽  
Food Utilization ◽  
Relative Prices ◽  
Growing Period ◽  
Daily Allowance ◽  
Mean Differences ◽  
Whey Feeding

SummaryResults are reported of an experiment made under commercial conditions on the effect of the level of meal fed in conjunction with an unrestricted supply of whey on the performance and carcass quality of pigs.All the pigs received the same meal mixture and had continuous access to an unrestricted supply of whey. The four treatments were: (1) 3 lb meal per pig per day reduced to 2 lb at 13 weeks of age; (2) 3 lb meal per pig per day throughout; (3) 2½ lb meal per pig per day throughout; and (4) as (1) but the daily allowance of meal increased to 2½ lb/pig at 20 weeks of age. There were five pens of nine group-fed pigs on each treatment, involving a total of 180 pigs. The pigs were on experiment from 8–9 weeks of age to bacon weight. Comprehensive carcass measurements were made on all the pigs.Mean differences in rate of growth, efficiency of food utilization and carcass quality between the four groups of pigs were small and were not statistically significant. The significant differences in the proportions of meal and of whey consumed by the pigs on the different treatments during the growing period are discussed in relation to relative prices of the two foods. It is concluded that where unrestricted whey feeding is to be used, the feeding system employed in treatment 3 could be recommended in most of the environmental and economic situations likely to be encountered in practice.The superior performance of the pigs in the experiment compared with that in earlier trials is discussed in relation to the stock improvement work and concurrent improvements in housing and management carried out during the intervening years on the Cow and Gate farm in Dorset where the experiments were conducted.

Growth, economy of feed utilization and carcass quality in pigs in relation to dietary protein level and antibiotic administration

1959 ◽  
Vol 52 (2) ◽  
pp. 170-176 ◽  
Author(s):  
J. T. Morgan ◽  
F. R. Green ◽  
R. A. Costain ◽  
E. F. Williams
Keyword(s):  
Dietary Protein ◽  
Amino Acid Content ◽  
Growth Efficiency ◽  
Feed Utilization ◽  
Superior Performance ◽  
Carcass Quality ◽  
Antibiotic Administration ◽  
Meat Content ◽  
Protein Status ◽  
Total Body

An experiment is described in which sixty-four individually-fed pigs were used to investigate the effects of dietary protein status and administration of aureomycin on growth, efficiency of feed utilization and carcass conformation.The main features of the results obtained were:1. Pigs fed a ‘standard’ protein diet showed superior performance in terms of growth and economy of feed utilization in comparison with a ‘substandard’ ration. Appreciable differences in carcass quality including reduction in backfat and total body fat, concomitant with an increase in the lean meat content also resulted from variation in ration protein content. These results have been discussed in terms of the possible significance of both dietary crude protein status and amino acid content.2. The administration of aureomycin at a ‘nutritional’ level had no apparent effect on any of the indices of pig productivity subject to analysis.3. The high killing percentages noted over-all, have been discussed in relation to dietary energy and fibre levels.

A note on rationing of growing pigs according to age

1975 ◽  
Vol 21 (3) ◽  
pp. 337-339 ◽  
Author(s):  
R. Braude ◽  
K. G. Mitchell ◽  
R. J. Pittman
Keyword(s):  
Live Weight ◽  
Growing Pigs ◽  
Carcass Quality ◽  
Growing Period

SUMMARYIn a trial involving 231 pigs grown from 20 to 90 kg live weight, three methods of adjusting the feed allowance were compared, namely according to live weight and a scale with weekly adjustments, or according to age with fixed increments of feed, adjusted either weekly or every 3 weeks. Irrespective of the frequency of feed adjustment, rationing by age gave as satisfactory results in performance and carcass quality as rationing by live weight, and reduced labour requirements by eliminating the need for regular weighing of the pigs throughout the growing period.

Threonine requirement of growing pigs (50 to 95 kg) in relation to diet composition

1997 ◽  
Vol 64 (1) ◽  
pp. 155-161 ◽  
Author(s):  
J. B. Schutte ◽  
J. de Jong ◽  
W. Smink ◽  
F. Koch
Keyword(s):  
Diet Composition ◽  
Live Weight ◽  
Basal Diet ◽  
Growing Pigs ◽  
Maximum Efficiency ◽  
Carcass Quality ◽  
Food Utilization ◽  
Net Energy ◽  
Food Ingredients

AbstractA study was conducted to evaluate increasing dietary levels of threonine on performance and carcass quality of growing gilt pigs (live-weight period of 50 to 95 kg; no. = 384) by using two different types of basal diets. One basal diet (basal A) was composed of highly digestible food ingredients and the other diet (basal B) of less well digested food ingredients. Before starting the growth trial, Heal apparent digestibility ofamino acids of both basal diets was determined in an in vivo digestibility trial with pigs. Both basal diets were composed in such a way as to obtain equal contents for net energy and Heal digestible threonine, lysine, methionine + cystine and tryptophan. The content of Heal digestible threonine in both basal diets was approximately 3·3 g/kg, corresponding with a total threonine content of 4·8 g/kg in basal diet A and 5·4 g/kg in basal diet B. To both diets three graded dose levels (0·4, 0·8 and 1·2 g/kg) of L-threonine were added, providing at the highest supplemented level 4·5 g/kg Heal digestible threonine. The requirement for Heal digestible threonine was estimated to be 4·1 g/kg regardless of diet composition. This estimated requirement was mainly based on the results for food conversion efficiency. For obtaining maximum weight gain, the requirement for Heal digestible threonine was found to be somewhat higher than for maximum efficiency of food utilization. The estimated requirement figure of 4·1 g Heal digestible threonine corresponded with approximately 5·6 g total threonine per kg in basal diet A and 6·2 g/kg in basal diet B. Carcass quality was not affected by the content of threonine in the diets.

scholarly journals Investigation upon the effect of the vaccination against the respiratory form of Aujeszky's disease with a deletion mutant gE-/TK- vaccine in growing/fattening pigs

2018 ◽  
Vol 48 (2) ◽  
pp. 70
Author(s):  
J. C. PAPATSAS (I.K. ΠΑΠΑΤΣΑΣ) ◽  
S. C. KYRIAKIS (Σ.Κ. ΚΥΡΙΑΚΗΣ) ◽  
O. PAPADOPOULOS (ΠΑΠΑΔΟΠΟΥΛΟΣ Ο.) ◽  
K. SARRIS (Κ. ΣΑΡΡΗΣ) ◽  
S. LEKKAS (Σ. ΛΕΚΚΑΣ)
Keyword(s):  
Growth Performance ◽  
Bacterial Infections ◽  
Pasteurella Multocida ◽  
Growth Parameters ◽  
Growing Pigs ◽  
Control Group ◽  
Carcass Quality ◽  
Aujeszky's Disease ◽  
Aujeszky’S Disease ◽  
Fattening Pigs

In this trial study, the effect of the vaccination of growing/fattening pigs against Aujeszky's disease virus (ADV) was investigated, in a farm placed in an endemic to ADV area. Three different trial groups of 11-week old growing pigs were vaccinated either once or twice or left unvaccinated. Comparisons between groups were made with respect to growth parameters, carcass quality, as well as pathological and bacteriological findings. All vaccinated animals had significantly better growth performance and carcass quality in comparison to the unvaccinated group, while no significant differences were observed between once and twice vaccinated animals. Lower lungs' affection due to secondary pathogens was also observed in vaccinated groups when compared with the control group of pigs. Bacteriological examination revealed that the frequency of secondary pulmonary bacterial infections, such as Streptococcus suis and Pasteurella multocida was lower in vaccinated pigs compared to controls. It was concluded that single and probably double vaccination against ADV may improve growth performance and carcas quality and may reduce lung affection due to certain secondary pathogens, under the management conditions of the trial farm.

The effect of using fibrous feeds as nutrient diluents on the carcass quality and performance of finishing pigs fed ad libitum

1992 ◽  
Vol 1992 ◽  
pp. 10-10
Author(s):  
B P Gill ◽  
A G Taylor ◽  
B Hardy ◽  
J G Perrott
Keyword(s):  
Sugar Beet ◽  
Growing Pigs ◽  
Sugar Beet Pulp ◽  
Eating Quality ◽  
Carcass Quality ◽  
Finishing Pigs ◽  
Meat Eating ◽  
Beet Pulp ◽  
Ad Libitum ◽  
And Performance

Satisfactory levels of performance and improved carcass and meat eating quality in growing pigs fed high levels of sugar beet pulp (SBP) have been recently demonstrated by Kay et al. (1990) and Longland et al. (1991). One of the main advantages from feeding SBP was a reduction in carcass fatness and increased returns from improved grading. The objective of this work was to determine whether these benefits could be sustained to heavier finishing weights and to compare differences in the response to SBP as a source of readily fermentable non-starch polysaccharides (NSP) and to oat feed (OF), a cereal by-product high in insoluble NSP, which is less easily degraded.

Effect of flavor supplementation on growth performance, nutrient digestibility, blood profiles, and carcass quality in growing–finishing pigs

2020 ◽  
Vol 100 (1) ◽  
pp. 133-139
Author(s):  
Xiang Ao ◽  
Yan Lei ◽  
In Ho Kim
Keyword(s):  
Growth Performance ◽  
Average Daily Gain ◽  
Basal Diet ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Carcass Quality ◽  
Finishing Pigs ◽  
Dietary Treatments ◽  
Average Body ◽  
Blood Profiles

This study was conducted to evaluate the effect of supplementation of different flavors (apple and anise) on growth performance, nutrient digestibility, blood profiles, and carcass quality in growing–finishing pigs. A total of 96 growing pigs [(Yorkshire × Landrace) × Duroc] with an average body weight (BW) of 28.2 ± 0.7 kg were randomly assigned to one of the following three treatments: (1) CON, basal diet; (2) APF, basal diet + 0.05% apple flavor; (3) ANF, basal diet + 0.05% anise flavor, according to their BW and sex in this 15 wk experiment. There were eight replications (pens) per treatment and four pigs per pen (two barrows and two gilts). During week 0–5, pigs fed ANF diets had greater (p < 0.05) average daily gain (ADG) and average daily feed intake than those fed CON and APF diets. Dietary ANF treatment increased (p < 0.05) ADG during 0–15 wk compared with CON treatment. At the end of 5 wk, the apparent total tract digestibility of nitrogen in ANF treatment was improved (p < 0.05) compared with that in CON treatment. Dietary treatments did not affect the studied traits of carcass and meat quality. The inclusion of anise flavor increased ADG, but apple flavor had no effect on growth performance in growing–finishing pigs.

Serum cholesterol as a predictor of performance and carcass quality in growing pigs

1990 ◽  
Vol 1990 ◽  
pp. 94-94
Author(s):  
J.A. Taylor ◽  
D.N. Salter ◽  
D. Lister
Keyword(s):  
Serum Cholesterol ◽  
Normal State ◽  
Genetic Basis ◽  
Dietary Cholesterol ◽  
Growing Pigs ◽  
The Body ◽  
Carcass Quality ◽  
Turnover Rates

Cholesterol plays an important role in the transport of lipid throughout the body. Moreover, reports have linked the turnover of cholesterol with obesity (eg Nestel, Schreibman and Ahrens, 1973). Recent studies have demonstrated wide variations in serum cholesterol in response to hypercholesterogenic diets in growing pigs (Shutler and Low, 1988). These variations in response appear to have a genetic basis and may be due to variations in turnover rates. The aim of the present study was to determine whether the measurement of serum cholesterol in growing pigs, either in their normal state or after being given a dietary cholesterol challenge, could be used in the prediction of performance or carcass quality.

scholarly journals Evaluation of wheat or corn dried distillers’ grains with solubles on performance and carcass characteristics of feedlot steers

2010 ◽  
Vol 90 (2) ◽  
pp. 259-269 ◽  
Author(s):  
L J Walter ◽  
J L Aalhus ◽  
W M Robertson ◽  
T A McAllister ◽  
D J Gibb ◽  
...  
Keyword(s):  
Average Daily Gain ◽  
Barley Grain ◽  
Distillers Grains ◽  
Superior Performance ◽  
Experimental Unit ◽  
Carcass Quality ◽  
Distillers Grains With Solubles ◽  
Dried Distillers Grains ◽  
Inclusion Level ◽  
Corn Ddgs

A study was conducted on crossbred steers (n = 275; 376 ± 24 kg) to evaluate performance and carcass quality of cattle fed wheat or corn dried distillers’ grains with solubles (DDGS). The control ration contained 86.6% rolled barley grain, 5.7% supplement and 7.7% barley silage (DM basis). The four treatments included replacement of barley grain at 20 or 40% of the diet (DM basis) with wheat or corn DDGS. Steers were slaughtered at a common end weight of 645 kg with 100 steers randomly (n = 20 per treatment) selected for determination of the retail yield of sub-primal boneless boxed beef (SPBBB). Data were analyzed as a completely randomized design using pen as the experimental unit. Feeding increasing levels of wheat DDGS led to a quadratic increase in dry matter intake (DMI) (P < 0.01), whereas increasing levels of corn DDGS led to a quadratic decrease in DMI (P = 0.01). Average daily gain was not influenced (P = 0.13) by feeding wheat or corn DDGS, but cattle fed corn DDGS exhibited a quadratic increase (P = 0.01) in gain:feed. As a result, a quadratic increase (P < 0.01) in calculated NEg of the diet was observed as corn DDGS levels increased. A linear decrease (P = 0.04) in days on feed (169, 166 and 154 d) was noted when increasing levels of wheat DDGS (0, 20 and 40%) were fed. Dressing percentage increased in a linear fashion with wheat DDGS (P < 0.01) inclusion level and in a quadratic fashion (P = 0.01) as corn DDGS inclusion level increased although other carcass traits were not affected (P > 0.10) by treatment. The results indicate that replacement of barley grain with corn or wheat DDGS up to 40% of the diet (DM) can lead to superior performance (improved gain:feed or reduced days on feed, respectively) with no detrimental effect on quality grade or carcass SPBBB yield.Key words: Dried distillers’ grains with solubles, corn, wheat, feedlot performance, carcass quality, steers

Amino acid requirements of growing pigs 5. The interaction between isoleucine and leucine

1984 ◽  
Vol 38 (2) ◽  
pp. 257-261 ◽  
Author(s):  
S. J. Taylor ◽  
D. J. A. Cole ◽  
D. Lewis
Keyword(s):  
Amino Acid ◽  
Conversion Efficiency ◽  
Live Weight ◽  
Basal Diet ◽  
Growing Pigs ◽  
Carcass Quality ◽  
Food Conversion ◽  
Isoleucine Leucine ◽  
Plasma Urea ◽  
Food Conversion Efficiency

ABSTRACTThirty-two female growing pigs (25 to 55 kg live weight) were subjected to four dietary treatments combining two levels of isoleucine and two levels of leucine to investigate the effects of leucine supply on the requirement for isoleucine.Results for daily live-weight gain, food conversion efficiency and carcass quality judged by ham dissection indicated that 3·8 g isoleucine per kg diet was marginally adequate for the growing pig in diets containing 13·4 g leucine per kg. An interaction between dietary leucine and isoleucine was demonstrated. Increasing the dietary leucine concentration to 20·4 g/kg clearly resulted in a deficiency of isoleucine in the basal diet, as daily gain, food conversion efficiency and carcass quality were significantly improved by increasing the isoleucine concentration from 3·8 g to 4·5 g/kg diet. Dietary leucine concentration did not influence performance at the higher level of isoleucine supply. Changes in plasma urea and amino acid concentrations confirmed the findings from the growth experiment of the interaction between isoleucine, leucine and valine.

The value of Australian sorghum for fattening pigs

1950 ◽  
Vol 40 (1-2) ◽  
pp. 84-92 ◽  
Author(s):  
R. Braude ◽  
K. G. Mitchell ◽  
K. L. Robinson
Keyword(s):  
Weight Gain ◽  
Fish Meal ◽  
Live Weight ◽  
First Grade ◽  
Carcass Quality ◽  
Food Utilization ◽  
Live Weight Gain ◽  
Maize Meal ◽  
Fattening Pigs

1. At two centres, Hillsborough and Shinfield, forty-eight pigs in four groups were fattened on rations containing Australian sorghum. The control ration consisted of 30%, wheatfeed, 30% barley meal, 30% maize meal and 10% fish meal. In the three experimental rations either barley meal or maize meal or both were replaced by sorghum.2. The rations containing 30% of sorghum proved to be equal to the control ration as far as live-weight gain of the pigs and the efficiency with which they utilized food was concerned. When 60% of the ration consisted of sorghum there were indications that both rate of gain and food utilization suffered.3. Some aspects of carcass quality suffered when either sorghum alone or sorghum plus maize formed 60% of the ration. The quality of the control carcasses, although quite good by present-day standards, would not qualify for first grade when commercial grading is re-introduced.4. Bacon produced on rations containing up to 60% sorghum had no off-taste or unpleasant flavour.5. In general, the value of sorghum in the ration of fattening pigs was found to be about equal to that of maize.

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