Large Turkey Commercial Strain Comparisons of Performance, Carcass Quality and Meat Yield During 1969 and 1977

Moran, E. T.; Leeson, S.; Summers, J. D.

doi:10.4141/cjas78-039

Cited by 6 publications

(3 citation statements)

References 5 publications

(5 reference statements)

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“…The Nicholas strain were always heavier at (Larson et al, 1986). Moran et al (1978Moran et al ( , 1984 showed similar growth patterns for torn turkeys of these two strains. The slower initial growth of the BUT strain seemed to be associated with reduced feed intake and improved feed utilization.…”

Section: Discussionsupporting

confidence: 49%

“…Feeding recommendations for late-maturing heavy strains, as exemplified by BUT, therefore generally involve elevated levels of essential amino acids per unit of energy, especially during starter and the early grower phases. The limited research published on this topic has invariably involved torn turkeys (Moran et al, 1978(Moran et al, , 1984. There is a dearth of information on strain comparison of nutrient requirements of commercial hen turkeys.…”

Section: Introductionmentioning

confidence: 98%

“…Strain difference in growth of commercial turkeys is often ascribed to stage of maturity (Moran et al, 1978), although Blair et al (1989) also cite evidence for a strain difference in carcass composition that may influence nutrient requirements. Moran et al (1984) compared turkey strain response to so-called Norm American and European diets; however, these diets seem contrary to most recommendations, because North American diets were generally higher in protein, lysine, and methionine.…”

Section: Introductionmentioning

confidence: 98%

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Response of Two Strains of Turkey Hens to Various Protein and Energy Feeding Programs

Leeson

Caston

1991

Poultry Science

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Two experiments were conducted to note the response of Nicholas and British United Turkey (BUT) strains of turkey hens to so-called North American and European feeding programs. The European program involved increased quantities of protein and essential amino acids relative to energy level of the diet. In Experiment 1, the two feeding programs were each tested with four replicate groups of 40 commercial hens of both strains. Each feed was allocated by weight and allotment continually adjusted for mortality. At 105 days of age, eight hens per replicate pen were sampled for various carcass characteristics. Nicholas hens were most often heavier (P<01) to 56 days, although after this time the BUT strain showed increased growth. At 105 days, BUT hens fed the high-protein diet were the heaviest group, being significantly (P<05) heavier than comparable birds fed low-protein diets. There was no difference (P<05) in feed efficiency from 0 to 105 days or in any of the carcass traits measured.In Experiment 2, the two strains of hens were grown to broiler weight at 70 days, again with conventional versus high-protein diets. Each treatment was tested with six replicate floor pens each containing 50 poults. At 70 days of age both strains of hen were heavier when fed the high-protein diets (P<.05), although the Nicholas hens were heavier than the BUT birds (P<05). The BUT hens ate less feed than Nicholas birds (P<01) and also exhibited superior feed efficiency (P<.01). The mortality rate of BUT hens was greater than that of Nicholas hens when the high-protein diet was used (P<05).There were obvious differences in growth rate of the two strains of turkey hen used in the present trials. Depending upon market age, the BUT hen seemed to respond favorably to diets of higher protein-amino acid content relative to energy concentration. (

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Section: Discussionsupporting

confidence: 49%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

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Response of Two Strains of Turkey Hens to Various Protein and Energy Feeding Programs

Leeson

Caston

1991

Poultry Science

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Response of two strains of large white male turkeys to amino acid levels when diets are changed at three- or four-week intervals

et al. 1997

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A study was conducted to evaluate the amino acid recommendations of the NRC (1994) when diets were changed at 3- or 4-wk intervals. Diets formulated to provide from 90 to 115% of recommended amino acid levels were fed to Nicholas (NIC) and British United Turkey (BUT) Large White males from day-old to 24 wk of age; samples of turkeys were processed at 18 and 24 wk. Results indicated that the amino acid levels suggested by NRC are adequate to support maximum body weight gain, feed conversion, and dressing percentage of Large White males grown to 18 or 24 wk when fed on 4-wk intervals. An approximately 5% higher level of amino acids was required to maximize breast yield. When feeds were changed at 3-wk intervals, higher levels of amino acids were required to maximize performance; however, there did not seem to be any difference in the response of the two strains of turkeys to different levels of amino acids in this study.

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Production and Carcass Quality Responses of Early and Late Marketed Large Toms to Added Dietary Fat During the Finishing Period

Moran

1982

Poultry Science

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Large Turkey Commercial Strain Comparisons of Performance, Carcass Quality and Meat Yield During 1969 and 1977

Abstract: MonaN, E. T., Jn., Lrssor{, S..q

Cited by 6 publications

References 5 publications

Response of Two Strains of Turkey Hens to Various Protein and Energy Feeding Programs

Response of Two Strains of Turkey Hens to Various Protein and Energy Feeding Programs

Response of two strains of large white male turkeys to amino acid levels when diets are changed at three- or four-week intervals

Production and Carcass Quality Responses of Early and Late Marketed Large Toms to Added Dietary Fat During the Finishing Period

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