The Influence of an Antibiotic, Animal Protein, Sex and Rearing Environment on Chick Growth

Wisman, Ellen; Boucher, R. V.; Callenbach, Ernest

doi:10.3382/ps.0330328

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…These results indicate that males, within the ranges used in this study, were more responsive than females to protein and energy changes and are in agreement with those of Wisman et al (1954) andShultze et al (1958). Both sexes had significantly poorer body weight gains when protein levels were reduced from 20.8 to 17.7 percent and productive energy from 816 to 694 Calories per pound.…”

Section: Discussionsupporting

confidence: 93%

Protein and Energy Requirements of Chicks Selected for High and Low Body Weight

Siegel

Wisman

1962

Poultry Science

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Section: Discussionsupporting

confidence: 93%

Protein and Energy Requirements of Chicks Selected for High and Low Body Weight

Siegel

Wisman

1962

Poultry Science

Self Cite

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Mandated restrictions on the use of medically important antibiotics in broiler chicken production in Canada: implications, emerging challenges, and opportunities for bolstering gastrointestinal function and health — a review

Bean-Hodgins

Kiarie

2021

Can. J. Anim. Sci.

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Chicken Farmers of Canada has been progressively phasing out prophylactic use of antibiotics in broiler chicken production. Consequently, hatcheries, veterinarians, and nutritionists have been mandated to contend with less reliance on use of preventive antibiotics. A topical concern is the increased risk of proliferation of enteric pathogens leading to poor performance, increased mortality and compromised welfare. Moreover, the gut harbors several taxa such as Campylobacter and Salmonella capable of causing significant illnesses in humans via contaminated poultry products. This has created opportunity for research and development of dietary strategies designed to modulate gastrointestinal environment for enhanced performance and food safety. Albeit with inconsistent responses, literature data suggests that dietary strategies such as feed enzymes, probiotics/prebiotics and phytogenic feed additives can bolster gut health and function in broiler chickens. However, much of the efficacy data was generated at controlled research settings that vary significantly with the complex commercial broiler production operations due to variation in dietary, health and environmental conditions. This review will summarize implications of mandated restrictions on the preventative use of antibiotics and emerging Canadian broiler production programs to meet processor specifications. Challenges and opportunities for integrating alternative dietary strategies in commercial broiler production settings will be highlighted.

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