Bacon Pigs Research Articles

Immunization of bacon pigs against Aujeszky's disease using live — or inactivated — virus vaccines with or without passive immunity

Immunization of bacon pigs against Aujeszky's disease using live — or inactivated — virus vaccines with or without passive immunity

Immunization of bacon pigs against Aujeszky's disease using two different vaccines with oil adjuvants. Study of local reactions

Immunization of bacon pigs against Aujeszky's disease using two different vaccines with oil adjuvants. Study of local reactions

Effect of changes in the diet composition on the bacon pig performance

Effect of changes in the diet composition on the bacon pig performance

The isolation ofStreptococcus suistypes 1 and 2 from pigs in New Zealand

Abstract Extract Madam:– I wish to advise of the recent isolation of Streptococcus suis 1 and 2 from pigs in New Zealand. Type 1 was isolated from brain and joint swabs from a three-week-old piglet. The piglet had meningitis, was laterally recumbent, paddling and had arthritis with grossly swollen joints. Type 2 was isolated from tonsils collected from apparently normal bacon pigs slaughtered at a meat works. Isolates were confirmed as either Streptococcus suis type 1 or 2 on the basis of biochemical characteristics(4) and Lancefield precipitin tests using Sand R antisera as originally used by De Moor.(2)

Determination of the feeding value of grain maize silage with cobs in restricted bacon pigs

Determination of the feeding value of grain maize silage with cobs in restricted bacon pigs

Avian tuberculosis in pigs: miliary lesions in bacon pigs.

An outbreak of tuberculosis caused by Mycobacterium avium type 2 is described which resulted in the total condemnation of 26 carcasses and partial condemnation of tissues and organs of a further 200 animals. Circumstantial evidence is presented that hens running in the farmyard were the source of the infection. Examinations of the carcasses and organs of the diseased pigs suggested that the accepted pathogenesis of the disease is incorrect and a new hypothesis is presented. The problems for the meat inspector in differentiating tuberculosis from 'milk-spot liver' are discussed and recommendations made. The findings of the study are discussed in the light of 'The Meat Inspection Regulations 1963' and it is recommended that where tuberculosis is suspected there is no longer any necessity to split the carcasses. The public health implications of this study are discussed.

Utilization of " simple 0 " rapeseed oil-meal by the bacon pig

Utilization of " simple 0 " rapeseed oil-meal by the bacon pig

Use of moist grain maize with cobs in bacon pig feeding

Use of moist grain maize with cobs in bacon pig feeding

Comparison of French sorghum varieties with different tannin contents in bacon pig feeding

Comparison of French sorghum varieties with different tannin contents in bacon pig feeding

Fibrous agro‐industrial by‐products as protein sources for bacon pigs

ZusammenfassungRohfaserreiche Industrie‐Nebenprodukte als Proteinquellen für Mastschweine 1. Gewichtszuwachs, Verdaulichkeit der Nährstoffe, SchlachtkörperqualitätAn 6 Gruppen mit je 6 Schweinen wurden folgende Futtermittel als Proteinquellen gefüttert: 1) Weizenkleie (fein) 60,5% plus 3,5 Fischmehl; 2) Malzkeime (von Gerste) 35,5%; 3) Malzkeime 35,5% plus 0,245% Methionin; 4) Malzkeime 25,5% plus 3,5% Fischmehl; 5) Biertreber getrocknet, 46,5% plus 0,225% Methionin; 6) Biertreber, getrocknet, 32,5% plus 3,5% Fischmehl. Verglichen wurden die Ergebnisse mit einer handelsüblichen Mastschweine‐Ration. Das Versuchsgewicht zu Beginn betrug 55 kg und das Endgewicht 87 kg. Von 30 kg bis zu einem Körpergewicht von 55 kg erhielten alle Tiere das handelsübliche Futter. Weizenkleie wurde außerdem noch von 30 kg bis 87 kg verabreicht.Im Vergleich zu der handelsüblichen Ration betrug der Gewichtszuwachs in der Gruppe 1 82%, in den Gruppen 2, 3 und 4 64%. Die entsprechenden Werte für die Futterverwertung lagen bei 92% in Gruppe 1 und 78% in den Gruppen 2, 3 und 4. Die Ergebnisse für die Gruppe 5 lagen ebenfalls unter denen der Vergleichsgruppe. Für die Gruppe 6 wurden mit 87% Gewichtszuwachs und 95% Futterverwertung die besten Ergebnisse im Vergleich zu handelsüblichem Kraftfutter erzielt. Hinsichtlich der Verdaulichkeit konnten keine signifikanten Unterschiede zwischen den Gruppen ermittelt werden.

Fibrous agro‐industrial by‐products as protein sources for bacon pigs

ZusammenfassungRohfaserreiche Industrie‐Nebenprodukte als Proteinquellen für astschweine 2. Verdaulichkeitsstudien mit Hilfe von Ileum‐KanülenEs wurden 3 isonitrogene Rationen 1) 20% Malzkeime (von Gerste); 2) 30% getrocknete Bier‐treber; 3) 65% Weizenkleie (fein) mit einer Ration aus Gerste und 12,5% Soja (4) vergleichen. Die scheinbare Verdaulichkeit wurde mit der scheinbaren Verdaulichkeit am Ileum verglichen. Die scheinbare Verdaulichkeit der organischen Substanz erreichte die Werte 78% für Malzkeime (1), 73% für Biertreber (2), 68% für Weizenkleie (3) und 82% für Soja (4). Die am Ileum gemessenen Werte lagen bei allen Rationen um etwa 7% niedriger. Die scheinbare Verdaulichkeit des Stickstoffs betrug 69%, 67%, 63% und 76% für die Gruppen 1–4. Die am Ileum gemessenen Werte lagen hier um etwa 3% in alien Gruppen niedriger. Die niedrigste Verdaulichkeit sowohl am Ileum als auch insgesamt wurden für die Aminosäuren Lysin und Threonin gemessen. Die Passagerate des Futters lag am Ileum bei der Soja‐Gerste‐Ration deutlich niedriger als bei der Ration mit Weizenkleie.

Utilization of moist grain maize silage in the bacon pig. Effect of the moisture content and of the presence of cobs

Utilization of moist grain maize silage in the bacon pig. Effect of the moisture content and of the presence of cobs

Possibilities of improving the feeding value of winter peas in the bacon pig. Effect of cooking-extrusion treatment, of storage length and of tryptophan supplementation

Possibilities of improving the feeding value of winter peas in the bacon pig. Effect of cooking-extrusion treatment, of storage length and of tryptophan supplementation

Comparative utilization of wheat and rye by the bacon pig during the growing-finishing period

Comparative utilization of wheat and rye by the bacon pig during the growing-finishing period

Feeding Experiments with Ochratoxin A Contaminated Barley for Bacon Pigs

(1983). Feeding Experiments with Ochratoxin A Contaminated Barley for Bacon Pigs. Acta Agriculturae Scandinavica: Vol. 33, No. 2, pp. 171-175.

Utilization of spring peas associated with wheat or maize in bacon pig diets

Utilization of spring peas associated with wheat or maize in bacon pig diets

Feeding Experiments with Ochratoxin A-contaminated Barley to Bacon Pigs

Feeding Experiments with Ochratoxin A-contaminated Barley to Bacon Pigs

Feeding Experiments with Ochratoxin a Contaminated Barley for Bacon Pigs

Feeding Experiments with Ochratoxin a Contaminated Barley for Bacon Pigs

Pathological Lesions in Swine at Slaughter

The influence of environment on animal health was studied in 40 bacon herds. These herds delivered approx. 11,000 baconers annually to the slaughter-house. The data from the meat inspection was studied in connection with the environmental recordings, and the relationship between 18 lesions and 20 environmental factors were estimated by statistical methods. The data was collected in the period 1975–1977. The influence of environmental factors upon the prevalence of different lesions showed considerable variation. Ten environmental factors were significantly associated with pleurisy and tail lesions (cannibalism). On the other hand none of the environmental factors bore any significant relation to atrophic rhinitis, pericarditis, peritonitis, perihepatitis, polyarthritis, arthritis and claw lesions. Eight environmental factors influenced the proportion of healthy animals. The recorded environmental factors influenced the overall health situation to a varying degree. For example, design of pen walls, insulation of pen floors, occasional use of supplementary feed and free access to drinking water were related to 5–7 lesions, while the nature of the concentrate (meal/pellets) had no significant influence. The study indicated that many details in environment and management could be of importance to the health of bacon pigs. However, statistical analysis also showed that production systems had a considerably stronger influence upon the health situation than any of the “pure” environmental factors – even when these factors were added.

Behavioural results and performance of bacon pigs fed “AD libitum” from one or several self-feeders

In order to investigate the behaviour of pigs in two different self-feeding situations and the influence of these factors on performance, two almost identical experiments were carried out. In each experiment, 96 pigs were separated into two groups which were self-fed from several and from one self-feeder per pen of 8 pigs, respectively. The animals' ranking order was determined, and some definite forms of behaviour were registered at three stages during the growth period from an average weight of 21–70 kg. It is shown that in pens with one self-feeder, providing eating space for only one pig at a time, a competitive situation arises due to the socially facilitated feeding behaviour. The dominating pigs in the hierarchy benefit from this at the expense of the lower-ranking ones, and the pigs show aggression, eating activity and weight gain according to rank. In pens with several feeders, eating activity and weight gain are independent of ranking order and the intra-pen variance in weight gain is less than in pens with one feeder. The avarage amount of eating activity per pig was significantly higher and, moreover, dominating pigs in pens with several feeders are not so much more aggressive than lower ranking pigs, and the frequency of aggression, tail-biting and ear-biting is significantly lower than in pens with only one feeder. This emphasizes that competition can be minimized by giving groups of self-fed pigs access to several feeders at a time, and shows that the incidence of behaviour like tail-biting and ear-biting can be reduced considerably, also without the use of straw as bedding.