Page 2 of articles about immunity in Articles

What the cytokines are, what they do and how they work on the immune system.

This article reviews major immune cells: Neutrophils, macrophages, natural killer, lymphocytes, dendritic cells, mast cells...

This article summarizes the primary (thymus and bone marrow) and secondary (lymph nodes, spleen, MALT, tonsils, and skin immune system) lymphoid organs in pig.

Biological alterations in immune and intestinal systems occur immediately after weaning that affect subsequent pig growth and health.

This article introduces us to the complex world of porcine immunology.

The rate and sequence of mucosal immune maturity from birth to an ‘adult-type’ pig is an important determinant of subsequent performance, health and survival, and hence impacts on the efficiency and profitability of pork production.

Cross-sectional sampling (different age groups during one herd visit) has the advantage that results are obtained quickly.

The interaction between M. hyopneumoniae and its host make M. hyopneumoniae one of the most important contributors to porcine respiratory disease.

One issue is to overcome maternal immunity, which is true for all PCV2 vaccines in the market, and another is whether the most from these vaccines is achieved independently of the PCV2 antibody titre at vaccination

Tryptophan has positive effects on voluntary feed intake. This greater feed intake leads to increased growth performance and improved feed conversion ratio in piglets, and to lower body weight losses in sows during lactation.

Normally, in pigs influenza is an acute respiratory infection with pyrexia, lethargy, prostration, reluctance to eat and drink. Indoor housed pigs are usually affected simultaneously, with recovery within 1-2 weeks. No adverse effects occur unless there is secondary infection.

Colostrum offers 3 essential properties to the piglet: very useful energy source (vital for generating movement and avoiding temperature loss), immune supply (protects against germs that the piglet begins to come into contact with) and natural growth factors (complete the maturity of the piglet).

The consequences of the inflammatory and immune responses on tryptophan metabolism could impair the availability of tryptophan for body protein accretion, growth and all other metabolic processes involving this amino acid.

Control of PCV2 infections are increasingly through piglet vaccination now that global supplies are increasing.