252 Effect of Cyclic Heat Stress and Supplemented Inorganic and Organic Zinc Source Levels on Grow-Finish Pig Growth Performance and Estimated Body Composition.

2018 ◽  
Vol 96 (suppl_2) ◽  
pp. 134-135 ◽  
Author(s):  
K M Mills ◽  
J A Feldpausch ◽  
A W Duttlinger ◽  
S K Elefson ◽  
S M Zuelly ◽  
...  
Keyword(s):  
Body Composition ◽  
Heat Stress ◽  
Growth Performance ◽  
Zinc Source ◽  
Organic Zinc ◽  
Cyclic Heat ◽  
Inorganic And Organic

scholarly journals Cyclic Heat Stress and Supplementation of Zinc at a High or Low Level from Inorganic and Organic Sources Minimally Impact Display Shelf-Life of Fresh and Processed Pork

2018 ◽  
Vol 2 (2) ◽  
pp. 18-19
Author(s):  
J. A. Feldpausch ◽  
K. M. Mills ◽  
S. K. Elefson ◽  
E. A. Ford ◽  
S. M. Zuelly ◽  
...  
Keyword(s):  
Heat Stress ◽  
Shelf Life ◽  
Low Level ◽  
Cyclic Heat ◽  
Inorganic And Organic

scholarly journals Effects of Herbal Adaptogen Feed-Additive on Growth Performance, Carcass Parameters, and Muscle Amino Acid Profile in Heat-Stressed Modern Broilers

2021 ◽  
Vol 12 ◽  
Author(s):  
Elizabeth S. Greene ◽  
Clay Maynard ◽  
Casey M. Owens ◽  
Jean-François Meullenet ◽  
Sami Dridi
Keyword(s):  
Body Weight ◽  
Heat Stress ◽  
Amino Acid ◽  
Growth Performance ◽  
Feed Intake ◽  
Control Diet ◽  
Amino Acid Profile ◽  
Poultry Production ◽  
Carcass Parameters ◽  
Cyclic Heat

Heat stress has strong adverse effects on poultry production and, thereby, threats its sustainability, which energized scientists to search for innovative and effective solutions. Here, we undertook this study to evaluate the effects of in-feed herbal adaptogen (stress response modifier) supplementation on growth performances, meat quality, and breast amino acid profile in chronic cyclic heat-stressed broilers. Day-old male Cobb 500 chicks (n = 720) were randomly assigned, in environmental chambers (n = 12, 24 pens), to three diet-treatments: a three-phase corn-soybean based diet fed as such (Control, C), or supplemented with the herbal adaptogen at 500 g/1000 kg control diet (NR-PHY-500) or at 1 kg/1000 kg control diet (NR-PHY-1000). From d29 to d42, birds from 9 chambers were exposed to cyclic heat stress (HS, 35°C from 9:30 am-5:30 pm), however, the rest of the chamber were maintained at thermoneutral conditions (24°C, TN), which creates 4 experimental groups: C-TN, C-HS, NR-PHY-500HS, and NR-PHY-1000HS (6 pens/group, 168 birds/group). HS altered growth performance via depression of feed intake and body weight. Adaptogen supplementation stimulated feed intake and averaged 65.95 and 83.25 g better body weight and 5 and 10 points better FCR at low and high dose, respectively, compared to heat-stressed birds. This increase in body weight was mirrored in enhanced weights of body parts (breast, tender, wings, and legs). Adaptogen supplementation modulated also breast amino acid profile, pH, color, and quality. Together, these data suggested that adaptogen supplementation could be a promising solution to alleviate heat stress, however further in-depth investigation for its mode of action and its underlying mechanisms are warranted.

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