Evaluation of an enzymatically treated soya protein in the diet of weaned pigs

Author(s):  
C A Weeks ◽  
BG Miller ◽  
L Green ◽  
S Rizvi ◽  
C Beck ◽  
...  

Soya proteins can provoke an immune response and cause diarrhoea in pigs weaned at 3 weeks of age. An enzymatically treated soya protein isolate (NURISH protein) did not have these effects in isolator reared experimental pigs (Miller et al 1992). A blind trial on 4 commercial farms was set up to evaluate NURISH as an alternative to conventional protein sources.On each farm 120 pigs (in 2 or 3 replicates) were fed either a typical commercial weaner diet containing cereals, fishmeal, milk proteins and full fat soya (the control) or a test diet matched for protein (22% CP), lysine (1.6%) and energy (DE 15.1 MJ/kg) with NURISH as the main protein source. Prophylactic antibiotics were not used.

2011 ◽  
Vol 106 (5) ◽  
pp. 683-687 ◽  
Author(s):  
Stephen M. Cornish ◽  
Carla M. Wood ◽  
Mary R. L'Abbé ◽  
G. Sarwar Gilani ◽  
Gerard M. Cooke ◽  
...  

The present study examined, using rats as a model, the effects of sex and age of exposure to dietary soya components on serum total and soya-specific antibody content. In Expt 1, Sprague–Dawley rats at 50 d of age were fed diets containing 20 % casein or 20 % alcohol-washed soya protein isolate (SPI) with or without supplemental isoflavones (ISF, 250 mg/kg diet) for 70, 190 or 310 d. The offspring were fed the same diets as their parents. In Expt 2, juvenile Sprague–Dawley rats at 30 d of age were fed diets containing 20 % casein with or without supplemental ISF (50 mg/kg diet) or increasing amounts of alcohol-washed SPI (5, 10 or 20 %) for 90 d. Exposure of rats to dietary SPI before the age of 28 d increased serum total IgA and IgM, and induced the production of SPI-specific IgA, IgG, IgM and IgE antibodies. Feeding of juvenile or adult rats with SPI elevated serum total IgA in females, while the opposite occurred in males, and markedly stimulated the production of SPI-specific IgM in females and IgG in males. Our data suggest that the effects of soya proteins and ISF on the production of serum total and SPI-specific antibodies appear to be sex dependent and also related to the age of exposure to soya in rats. However, the physiological significance of these immune responses remains to be determined.


Author(s):  
Jai-Jun Choung ◽  
David G. Chamberlain

When the proteins are given direct into the abomasum of dairy cows receiving diets based on grass silage, casein produces much greater responses of milk production than do equivalent amounts of soya-protein (Choung and Chamberlain 1991a, b). However, the cause of these differences of response is not known. In feeding trials, supplementation of silage diets containing soya bean meal with rumen-protected forms of the amino acids thought to be most limiting, methionine and lysine, has been without effect (Girdler et al 1988).


2016 ◽  
Vol 37 (2) ◽  
pp. 399-410
Author(s):  
B. S. Madhukar ◽  
D. G. Bhadre Gowda ◽  
K. Hemalatha ◽  
R. Somashekar ◽  
  Siddaramaiah

2018 ◽  
Vol 5 ◽  
pp. 39-43
Author(s):  
Oksana Kochubei-Lytvynenko ◽  
Olha Yatsenko ◽  
Nataliia Yushchenko ◽  
Ulyana Kuzmyk

There was offered and grounded the use of functional technological properties of the soya protein isolate in the technology of oil pasts. It will allows to increase the balance of the oil past composition additionally and will favor the decrease of extracting moisture during the storage term. There was studied the dynamics of a gradient of the limit stress of soya protein: hydrated soya protein, hydrated soya protein with the temperature processing, hydrated soya protein with the preliminary keeping during 24 h, hydrated soya protein with the preliminary keeping during 24 h and temperature processing during 5 min, hydrated soya protein with the preliminary keeping during 24 h and temperature processing during 10 min; hydrated soya protein with the preliminary keeping during 24 h and temperature processing during 15 min. It was established, that the hydrated isolate of soya protein is a plastic system, has enough strength. The limit stress parameter at the variable velocity of deformation of model samples determines optimal technological parameters of preparing the soya isolate: hydromodule – 1: 8, temperature processing – (82±2) °С, process duration 10 min with preliminary keeping during 24 hours. As a result of the studies, there were demonstrated technological parameters of preparing the soya protein isolate for obtaining the oil past by the direct mixing with the oil base.


Author(s):  
Jai-Jun Choung ◽  
David G. Chamberlain

When different protein sources are infused direct into the abomasum of the dairy cow, the pattern of utilization of the amino acid-N supplied might be expected to be influenced by the amino acid composition of the infused protein. This suggestion was examined in a nitrogen-balance study with lactating cows.


Nahrung/Food ◽  
1988 ◽  
Vol 32 (7) ◽  
pp. 669-678 ◽  
Author(s):  
V. V. Suchkov ◽  
V. Ya. Grinberg ◽  
T. M. Bikbov ◽  
G. Muschiolik ◽  
H. Schmandke ◽  
...  

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