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Effects of choice feeding and lower ambient temperature on feed intake, growth, foot health, and panting of fast- and slow-growing broiler strains

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Effects of choice feeding and lower ambient temperature on feed intake, growth, foot health, and panting of fast- and slow-growing broiler strains. / Steenfeldt, Sanna; Sørensen, Poul; Nielsen, Birte L.

I: Poultry Science, Bind 98, Nr. 2, 2019, s. 503-513.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{ba9645293b404225bca5acc8c4dce3e6,
title = "Effects of choice feeding and lower ambient temperature on feed intake, growth, foot health, and panting of fast- and slow-growing broiler strains",
abstract = "Effects of lowering ambient temperature in the second half of the growth period were studied in 2 broiler strains with different genetic potential for growth (Ross from 1972 and 2004) when given ad libitum access or pre-mixed increasing proportion of whole wheat in their diet. A total of 48 groups of day-old broilers (n = 64) from the 2 strains were housed as hatched in 48 pens in 4 houses and slaughtered at 6 wk of age. Half of the groups had access to pelleted feed pre-mixed with increasing proportion of whole wheat, the other half had access to pelleted feed and whole wheat in separate troughs. Ambient temperature from 28 d of age was either 21 or 15°C. The fast-growing strain had greater (P < 0.001) live weight throughout (mean slaughter weights 2.6 (±0.014) kg and 1.0 (±0.006) kg). When given a choice, the fast-growing strain consumed a lower (P ≤ 0.004) proportion of whole wheat in their diet in weeks 5 and 6 (20 and 26 (±0.9) % whole wheat), and the slow-growing strain chose a higher (P < 0.001) wheat proportion (45 and 56 (±1.7) %) than the pre-mixed inclusion of 25 and 30%, respectively. The slow-growing strain grew slightly faster in the colder ambient temperature, and slower when given a free choice of whole wheat. Both strains drank more water per feed consumed in the warmer ambient temperature treatment. Foot pad dermatitis, only seen in the fast-growing birds, had a higher occurrence in the colder and in the choice feeding treatments. Gait scoring on day 34 showed perfect gait in more than 85% of the slow-growing and less than 1% of the fast-growing birds. Activity was higher and panting levels were lower in the slow-growing strain (P < 0.001) toward the end of the growth period, with no effect of the temperature treatment on panting. Slow-growing strains increase their energy intake, and fast-growing strains increase their protein intake when given a choice.",
keywords = "AGE, BEHAVIOR, CHICKENS, DIET SELECTION, LITTER QUALITY, PAD DERMATITIS, PERFORMANCE, STOCKING DENSITY, WET LITTER, WHEAT, ambient temperature, broiler chicken, choice feeding, water intake, whole wheat, Diet/veterinary, Species Specificity, Male, Animal Feed/analysis, Dietary Proteins, Chickens/growth & development, Female, Eating, Cold Temperature, Respiratory Rate, Feeding Behavior, Random Allocation, Energy Intake, Animals, Hoof and Claw/physiology",
author = "Sanna Steenfeldt and Poul S{\o}rensen and Nielsen, {Birte L}",
year = "2019",
doi = "10.3382/ps/pey323",
language = "English",
volume = "98",
pages = "503--513",
journal = "Poultry Science",
issn = "0032-5791",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Effects of choice feeding and lower ambient temperature on feed intake, growth, foot health, and panting of fast- and slow-growing broiler strains

AU - Steenfeldt, Sanna

AU - Sørensen, Poul

AU - Nielsen, Birte L

PY - 2019

Y1 - 2019

N2 - Effects of lowering ambient temperature in the second half of the growth period were studied in 2 broiler strains with different genetic potential for growth (Ross from 1972 and 2004) when given ad libitum access or pre-mixed increasing proportion of whole wheat in their diet. A total of 48 groups of day-old broilers (n = 64) from the 2 strains were housed as hatched in 48 pens in 4 houses and slaughtered at 6 wk of age. Half of the groups had access to pelleted feed pre-mixed with increasing proportion of whole wheat, the other half had access to pelleted feed and whole wheat in separate troughs. Ambient temperature from 28 d of age was either 21 or 15°C. The fast-growing strain had greater (P < 0.001) live weight throughout (mean slaughter weights 2.6 (±0.014) kg and 1.0 (±0.006) kg). When given a choice, the fast-growing strain consumed a lower (P ≤ 0.004) proportion of whole wheat in their diet in weeks 5 and 6 (20 and 26 (±0.9) % whole wheat), and the slow-growing strain chose a higher (P < 0.001) wheat proportion (45 and 56 (±1.7) %) than the pre-mixed inclusion of 25 and 30%, respectively. The slow-growing strain grew slightly faster in the colder ambient temperature, and slower when given a free choice of whole wheat. Both strains drank more water per feed consumed in the warmer ambient temperature treatment. Foot pad dermatitis, only seen in the fast-growing birds, had a higher occurrence in the colder and in the choice feeding treatments. Gait scoring on day 34 showed perfect gait in more than 85% of the slow-growing and less than 1% of the fast-growing birds. Activity was higher and panting levels were lower in the slow-growing strain (P < 0.001) toward the end of the growth period, with no effect of the temperature treatment on panting. Slow-growing strains increase their energy intake, and fast-growing strains increase their protein intake when given a choice.

AB - Effects of lowering ambient temperature in the second half of the growth period were studied in 2 broiler strains with different genetic potential for growth (Ross from 1972 and 2004) when given ad libitum access or pre-mixed increasing proportion of whole wheat in their diet. A total of 48 groups of day-old broilers (n = 64) from the 2 strains were housed as hatched in 48 pens in 4 houses and slaughtered at 6 wk of age. Half of the groups had access to pelleted feed pre-mixed with increasing proportion of whole wheat, the other half had access to pelleted feed and whole wheat in separate troughs. Ambient temperature from 28 d of age was either 21 or 15°C. The fast-growing strain had greater (P < 0.001) live weight throughout (mean slaughter weights 2.6 (±0.014) kg and 1.0 (±0.006) kg). When given a choice, the fast-growing strain consumed a lower (P ≤ 0.004) proportion of whole wheat in their diet in weeks 5 and 6 (20 and 26 (±0.9) % whole wheat), and the slow-growing strain chose a higher (P < 0.001) wheat proportion (45 and 56 (±1.7) %) than the pre-mixed inclusion of 25 and 30%, respectively. The slow-growing strain grew slightly faster in the colder ambient temperature, and slower when given a free choice of whole wheat. Both strains drank more water per feed consumed in the warmer ambient temperature treatment. Foot pad dermatitis, only seen in the fast-growing birds, had a higher occurrence in the colder and in the choice feeding treatments. Gait scoring on day 34 showed perfect gait in more than 85% of the slow-growing and less than 1% of the fast-growing birds. Activity was higher and panting levels were lower in the slow-growing strain (P < 0.001) toward the end of the growth period, with no effect of the temperature treatment on panting. Slow-growing strains increase their energy intake, and fast-growing strains increase their protein intake when given a choice.

KW - AGE

KW - BEHAVIOR

KW - CHICKENS

KW - DIET SELECTION

KW - LITTER QUALITY

KW - PAD DERMATITIS

KW - PERFORMANCE

KW - STOCKING DENSITY

KW - WET LITTER

KW - WHEAT

KW - ambient temperature

KW - broiler chicken

KW - choice feeding

KW - water intake

KW - whole wheat

KW - Diet/veterinary

KW - Species Specificity

KW - Male

KW - Animal Feed/analysis

KW - Dietary Proteins

KW - Chickens/growth & development

KW - Female

KW - Eating

KW - Cold Temperature

KW - Respiratory Rate

KW - Feeding Behavior

KW - Random Allocation

KW - Energy Intake

KW - Animals

KW - Hoof and Claw/physiology

UR - http://www.scopus.com/inward/record.url?scp=85061609482&partnerID=8YFLogxK

U2 - 10.3382/ps/pey323

DO - 10.3382/ps/pey323

M3 - Journal article

C2 - 30085259

VL - 98

SP - 503

EP - 513

JO - Poultry Science

JF - Poultry Science

SN - 0032-5791

IS - 2

ER -