Effect of @entity369 or @entity1160 supplementation on production, organ weights, XXXX , @entity17021 and antibody titre of broilers.

@entity17021 @entity1160 @entity24511 @entity6780 @entity534 @entity7647 @entity1573 @entity369
The objective of this study was designed to test whether supplementation of the diet with @entity369 ( @entity534 ) or @entity1160 ( @entity7647 ) or their combination influences the production, organ weights and humoral immune response of broilers. A total of 432 one-day-old male Ross 308 broiler @entity1573 were divided into 6 treatment groups: control, @entity534 -0.5%, @entity534 -1%, @entity7647 -0.5%, @entity7647 -1% and @entity534 -0.5%+ @entity7647 -0.5%. Drinking water and feed were provided ad libitum. On day 18 of the experiment 50% of @entity1573 in each treatment group were immunised with bovine serum albumin. Ten and 21 days after immunisation blood samples were collected to determine the anti-albumin IgY titre, @entity17021 ( @entity17021 ) and @entity24511 ( @entity24511 ) and to measure the weight of the liver, spleen, bursa of Fabricius and thymus. @entity534 or @entity7647 supplementation of the diets influenced neither the production nor the organ weights until 18 days of age. Between 18 and 39 days of age both @entity534 (0.5% and 1%) and @entity534 + @entity7647 supplementation improved the feed conversion ratio ( @entity6780 ) by 3.7%, 6.3% and 4.9%, respectively, while @entity7647 -1% worsened it by 15%. Immunisation slightly (-0.79%) depressed the body weight gain of broilers fed the control diet, which was significantly improved by both @entity534 (0.5 or 1%) and @entity534 + @entity7647 supplementation. Immunisation increased the weight of the spleen, bursa and thymus and decreased that of the liver. Supplementation with 1% @entity7647 depressed (-5.13%) the body weight gain of the immunised @entity1573 but strongly stimulated the immune response. Supplementations with @entity534 and @entity7647 did not influence the @entity17021 and @entity24511 level of the blood; however, on day 10 after immunisation these two parameters showed a negative correlation with each other. Regarding production, organ weights and immunity, @entity534 supplementation should be recommended in the grower phase, while @entity7647 supplementation can be useful in pullets raised for egg production, where a good immune response to vaccinations is an important factor.
