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  • Daigle, Courtney L  (2)
  • Biodiversity Research  (2)
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  • Biodiversity Research  (2)
  • 1
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 98, No. 2 ( 2020-02-01)
    Abstract: Beef production needs to increase from 60 million to 130 million tons by 2050 to feed a growing world population, and 70% of this production increase is expected from beef industries located in subtropical and tropical regions of the world. Bos indicus-influenced cattle predominate in these regions but are often managed using practices developed for Bos taurus breeds reared in temperate climates. Hence, a fundamental step to meet the increasing global demand for beef is to develop specific management for B. indicus-influenced cattle in tropical or subtropical environments. Bos taurus and B. indicus are different subspecies, and diverge in social and biological functions due to selection pressure caused by complex evolutionary and domestication processes. Bos indicus cattle display different social responses compared with B. taurus counterparts, which must be taken into account by management planning as these traits directly impact cattle performance and welfare. In tropical and subtropical regions, warm-season perennial C4 grasses are the dominant forages, and their availability has a significant influence on the productivity of beef cattle systems. The resilience of C4 grasses under adverse conditions is one of their most important characteristics, even though these forages have reduced nutritive value compared with forages from temperate climates. Accordingly, nutritional planning in tropical and subtropical conditions must include management to optimize the quantity and quality of C4 forages. Nutritional requirements of cattle raised within these conditions also require special attention, including inherent metabolic compromises to cope with environmental constraints and altered energy requirements due to body composition and heat tolerance. Nutritional interventions to enhance beef production need to be specifically tailored and validated in B. indicus-influenced cattle. As an example, supplementation programs during gestation or early life to elicit fetal programming or metabolic imprinting effects, respectively, yield discrepant outcomes between subspecies. Bos indicus-influenced cattle produce carcasses with less marbling than B. taurus cattle, despite recent genetic and management advances. This outcome is mostly related to reduced intramuscular adipocyte volume in B. indicus breeds, suggesting a lesser need for energy stored intramuscularly as a mechanism to improve thermotolerance in tropical and subtropical climates.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1490550-4
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Oxford University Press (OUP) ; 2019
    In:  Journal of Animal Science Vol. 97, No. Supplement_3 ( 2019-12-05), p. 35-36
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 97, No. Supplement_3 ( 2019-12-05), p. 35-36
    Abstract: Bos indicus and B. taurus are two different subspecies that differ in reproductive physiology, nutritional requirements, social behavior, digestive system, and body composition. A fundamental step in meeting the increasing global demand for protein on a planet experiencing climate change while addressing environmental stewardship is to identify management practices optimized for B. indicus-influenced cattle reared in the growing subtropical/tropical regions of the planet. Bos indicus-influenced cattle, are typically managed in subtropical/tropical regions utilizing practices developed and validated for B. taurus breeds in temperate environments. Little is known about the behavioral profile of B. indicus. Bovine Respiratory Disease (BRD), lameness, and bulling are three welfare and productivity issues that require behavioral evaluation to identify and treat. Little is known regarding lameness in feedlot cattle, irrespective of breed, but cattle are prey animals designed to mask illness and pain. Therefore, characterizing species-specific behavioral indicators of discomfort are paramount to early detection and treatment of these afflictions. B. indicus cattle are more gregarious than B. taurus and have more excitable temperaments; thus, they are more susceptible to stress, may have greater difficulty coping, and may be more adept at masking health issues. These cattle display different social behaviors compared to B. taurus counterparts, which may contribute to differences in production efficiency and outcomes. Gaining an understanding of the behavioral and social aspects of these animals, and understanding their biological thresholds regarding thermoregulation, disease resistance, transportation resiliency, and the human-animal interaction will provide foundational data for developing appropriate stewardship practices. Beef cattle, irrespective of what sector they are managed (e.g., feedlot, cow-calf, pasture housed), are directly affected by weather. Therefore, as the climate changes, we must begin to increase our use of animals that are better suited to these environmental conditions, and within that framework increase our understanding of their species-specific welfare needs.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1490550-4
    SSG: 12
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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