The Influence of Air Temperature During Brooding on Broiler Performance

Harris, G. C.; Nelson, G. S.; Dodgen, W. H.; Seay, R. L.

doi:10.3382/ps.0540571

Cited by 20 publications

(8 citation statements)

References 9 publications

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“…Gain of the two groups was similar for Days 2 and 3, but the 26.7 C group did not gain quite as well as the 32.2 C group. Generally, depressed weight gains at 1 week of age were observed for chicks brooded at cooler than recommended temperatures (Harris et al, 1975;Renwick and Washburn, 1982), but these studies did not consider weight gains earlier than 7 days.…”

Section: Resultsmentioning

confidence: 96%

“…Brooding of chicks at lower than recommended temperatures was reported by Huston (1965) and Harris et al (1975) to be acceptable when based on growth and feed efficiency of chicks older than 3 weeks of age; however, other studies (Hutson et al, I960;Renwick and Washburn, 1982) reported reduced growth, poorer feed efficiency, and increased mortality of chicks brooded at 26.7 C or lower immediately after hatching. The effect of brooding at cooler temperatures on weight gain and feed consumption was greater during the first than during the second week.…”

Section: Introductionmentioning

confidence: 89%

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Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Scott

Washburn

1985

Poultry Science

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A series of experiments was conducted to examine the response of neonatal, male broiler chicks to brooding at a reduced temperature. In Trials 1 and 2, chicks brooded at 26.7 C generally had lower body weights and higher serum corticosterone levels during the first week after hatch than those brooded at 32.2 C. However, significant differences in body weight were observed only on Day 6 in Trial 1 and on Days 1 and 5 in Trial 2. Serum corticosterone levels, likewise, were not significantly different on all days in Trials 1 and 2. These hormone levels were statistically different on Days 1 and 5 in Trial 1 and on Days 1 and 3 in Trial 2. Brooding neonates at 26.7 C for 3 days in Trials 3 and 4 resulted in consistently lower body weights and gain and higher serum corticosterone, thyroxine, total protein, albumin, and globulin. Serum growth hormone levels in chicks brooded at 26.7 C were initially depressed the first day but were elevated on the 2 subsequent days, compared with chicks brooded at 32.2 C. Considering the physiological importance of corticosterone and thyroxine in the adaptation of chickens to cold environmental temperatures, it would be useful to evaluate the genetic variation associated with the responsiveness of these hormones in a randombred population and to improve tolerance of neonatal chickens to reduced temperature brooding through selection.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 89%

Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Scott

Washburn

1985

Poultry Science

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“…Authors demonstrated that lower brooding temperatures influence mortality and production indexes. However, ambient and litter temperature have already received significant attention in previous studies [16][17][18] and was deemed unnecessary to persevere on them.…”

Section: Discussionmentioning

confidence: 99%

Factors Associated with Cumulative First-Week Mortality in Broiler Chicks

Yerpes

Llonch

Manteca

2020

Animals

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First-week mortality is an important performance index as well as an important welfare indicator. The aim of the present study was to identify internal (individual-dependent) and external (management or environmental) factors that could influence the cumulative first-week mortality of broilers. To carry out this study, field data obtained from a hatchery company were used, in which 2267 flocks of broiler chicks (from 2015 to 2018), were analyzed. A generalized linear mixed model was used to analyze the data. Farm ID and house by farm were incorporated as random effects. The Odds Ratio was estimated for each factor, determining the effect of each explanatory variable. First-week mortality was significantly related to breeder age (p < 0.0001), chick gender (p < 0.0001) and breed (p < 0.0001) as internal factors, and type of broiler house (p = 0.0129), presence or absence of drip cup (p < 0.0001), egg storage (p < 0.0001), study year (p < 0.0001) and season (p < 0.0001) as external factors. Therefore, these factors should be considered in the decision making of poultry breeding companies, in order to reduce possible welfare problems and increase productive performance.

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“…One particular concern has been to reduce the expenditure of fossil fuels for brooding broiler chicks. Although several new techniques have been developed, including low temperature brooding (Deaton et ah, 1974;Harris et at., 1975), limited space brooding (see Harris, 1976) and cage rearing (Andrews, 1972;Andrews and Goodwin, 1973), additional technology is needed.…”

Section: Introductionmentioning

confidence: 98%

Cage Brooding Followed by Floor Grow-Out: A Technique for Rearing Broilers ,

et al. 1980

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Broiler chicks were maintained in Petersime brooding batteries for three weeks and then transferred to floor pens in a conventional broiler facility for five additional weeks. Hatchmates were reared in floor pens for eight weeks. Comparisons of growth, feed efficiency, carcass quality, and a survey of physiological fitness of both treatment groups were made. The battery brooded birds exhibited lower final body weights and lower feed conversion ratios than the floor reared birds. Differences in mortality, general product quality, and physiological fitness were not found. However, humoral immune responsiveness, as indicated by increased anti-SRBC antibody levels, was better in the floor reared birds. This management technique is suggested as a possible method for the commercial rearing of broilers.

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The Influence of Air Temperature During Brooding on Broiler Performance

Cited by 20 publications

References 9 publications

Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Factors Associated with Cumulative First-Week Mortality in Broiler Chicks

Cage Brooding Followed by Floor Grow-Out: A Technique for Rearing Broilers ,

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