Effect of sub-lethal heat stress on viability of Lacticaseibacillus casei N in spray-dried powders

Spray-Dried Plasma Improves Body Weight, Intestinal Barrier Function, and Tibia Strength during Experimental Constant Heat Stress Conditions

Animals ◽

10.3390/ani11082213 ◽

2021 ◽

Vol 11 (8) ◽

pp. 2213

Author(s):

Jared Ruff ◽

Thaina L. Barros ◽

Joy Campbell ◽

Ricardo González-Esquerra ◽

Christine N. Vuong ◽

...

Keyword(s):

Heat Stress ◽

Intestinal Barrier ◽

Fluorescein Isothiocyanate ◽

Serum Levels ◽

Negative Control ◽

Intestinal Barrier Function ◽

Negative Consequences ◽

Fluorescein Isothiocyanate Dextran ◽

Prolonged Heat ◽

Spray Dried

The aim of this study was to see how spray-dried plasma (SDP) supplementation affected broiler chicken performance, intestinal permeability, and bone strength during persistent heat stress. One-day-old chicks (n = 480) were randomly assigned into twelve environmental corrals; four thermoneutral (TN-negative control, maintained at 24 °C from d 21–42); four heat stress (HS, exposed to 35 °C from d 21–42); and four heat stress treated with 2% SDP in the feed until d 28 followed by 1% SDP until d 42 (HS-SDP). The performance and serum levels of fluorescein isothiocyanate-dextran (FITC-d) were evaluated at d 21, 28, 35, and 42. The tibias strength was evaluated on d 21 and 42. The increment in chicken temperature (p < 0.05) was observed two h following the increase in environmental temperature in both HS groups and was associated with decreased performance parameters compared with the TN group. At d 42 of age, the chickens exposed to HS had an impaired gut permeability and decreased tibia strength compared to the TN group (p < 0.05). However, partially feeding SDP mitigated these adverse effects significantly. These findings imply that using SDP strategically during stressful times, such as prolonged heat stress, may help mitigate its negative consequences.

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Spray‐dried porcine plasma improves feed intake of weaned piglets subjected to heat stress

Journal of Animal Physiology and Animal Nutrition ◽

10.1111/jpn.13071 ◽

2019 ◽

Vol 103 (3) ◽

pp. 836-845

Author(s):

Luis Gustavo dos Santos Cerqueira ◽

Allan Paul Schinckel ◽

Hebert Silveira ◽

Thiago Hiroshi Kuribayashi ◽

Rennan Herculano Rufino Moreira ◽

...

Keyword(s):

Heat Stress ◽

Feed Intake ◽

Weaned Piglets ◽

Spray Dried

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Influence of Reconstitution on Isolation and Enumeration of Listeria monocytogenes from Milk Powder Used for Reference Samples

Journal of Food Protection ◽

10.4315/0362-028x-54.2.124 ◽

1991 ◽

Vol 54 (2) ◽

pp. 124-126 ◽

Cited By ~ 9

Author(s):

PAUL H. IN'T VELD ◽

POP S. S. SOENTORO ◽

ELLEN H. M. DELFGOU-VAN ASCH ◽

SERVE NOTERMANS

Keyword(s):

Heat Stress ◽

Listeria Monocytogenes ◽

Osmotic Stress ◽

Spray Drying ◽

Osmotic Shock ◽

Milk Powder ◽

Drying Process ◽

Isolation Methods ◽

Reference Samples ◽

Spray Dried

To test the performance of the Listeria isolation methods, reference samples consisting of gelatin capsules filled with spray-dried milk powder containing Listeria have been developed. During the spray-drying process the Listeria cells are exposed to heat stress and are susceptible to osmotic stress during the reconstitution procedure. To limit the effect of osmotic shock, the milk powder has to be encapsulated in gelatin in order to guarantee slow dissolution. Furthermore, the capsules have to be preen-riched in a nonselective medium. The practical consequences of these findings are discussed.

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