Hormonal, metabolic, body composition, and digestive responses of the bovine to thermal stress
1981
Blake, R.W.
Increased heat load on the bovine is cited as a responsible factor for sub-normal expression of performance traits, depressed reproductive rate, and lowered survivability of many breeds of cattle subjected to a tropical environment. Genotype by environment interactions are suspected of existing by many of the animal production disciplines. This indicates that the unique thermal component of the tropical environmental profile requires a likewise unique and specific genotype through which animal product profits can be maximized. Selection of the optimum management system, feeding regime, breeding plan and business approach so as the maximize net farm income impinges upon knowledge and understanding of the bovine in a tropical environment. A portion of the desired knowledge bank should include understanding the in vivo biochemical responses, mechanism, and their complexities-plus-confounding that underlie gross physical responses of the bovine to a hot environment. This is the intended objective of the present paper
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