Next Article in Journal
Prediction of Soil Oxalate Phosphorus using Visible and Near-Infrared Spectroscopy in Natural and Cultivated System Soils of Madagascar
Previous Article in Journal
Flooding Stress and High-Pressure Treatment Enhance the GABA Content of the Vegetable Soybean (Glycine max Merr.)
Open AccessArticle

Dietary Betaine Reduces the Negative Effects of Cyclic Heat Exposure on Growth Performance, Blood Gas Status and Meat Quality in Broiler Chickens

1
Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
2
Feedworks Pty Ltd., Romsey, VIC 3434, Australia
*
Authors to whom correspondence should be addressed.
Agriculture 2020, 10(5), 176; https://doi.org/10.3390/agriculture10050176
Received: 22 April 2020 / Accepted: 14 May 2020 / Published: 16 May 2020
Heat stress (HS) impairs growth performance and has a severe impact on lipid and protein metabolism, leading to serious adverse effects on meat quality. Forty-eight day-old-male Ross-308 chicks were assigned to two temperature conditions, thermoneutral or cyclical HS, and fed with either a control diet (CON) or the CON plus betaine (BET). Heat stress increased rectal temperature (p < 0.001), respiration rate (p < 0.001) and increased blood pH (p = 0.017), indicating that HS caused respiratory alkalosis. Heat stress reduced body weight during the final stage of growing period (p = 0.005), while BET improved it (p = 0.023). Heat stress tended to reduce breast muscle water content and drip loss (p = 0.089 and p = 0.082), while both were improved with BET (p = 0.008 and p = 0.001). Heat stress tended to reduce the myofibril fragmentation index (p = 0.081) whereas it increased with BET (p = 0.017). Heat stress increased thiobarbituric acid reactive substances (p = 0.017), while BET improved it (p = 0.008). Meat tenderness was not affected by HS, but was improved with BET (p < 0.001). In conclusion, BET improved growth performance over the latter stages of the growing period, and improved product quality of broiler chickens when chickens exposed to HS. View Full-Text
Keywords: cyclic heat stress; betaine; growth performance; meat quality; arterial blood gas; hormone activity; broiler chickens cyclic heat stress; betaine; growth performance; meat quality; arterial blood gas; hormone activity; broiler chickens
Show Figures

Figure 1

MDPI and ACS Style

Shakeri, M.; Cottrell, J.J.; Wilkinson, S.; Le, H.H.; Suleria, H.A.R.; Warner, R.D.; Dunshea, F.R. Dietary Betaine Reduces the Negative Effects of Cyclic Heat Exposure on Growth Performance, Blood Gas Status and Meat Quality in Broiler Chickens. Agriculture 2020, 10, 176.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop