Effect of physical feed restriction during rearing on Large White turkey breeder hens: 3. Body and carcass composition

Crouch, A. N.; Grimes, J. L.; Christensen, V. L.; Krueger, K. K.

doi:10.1093/ps/81.12.1792

Cited by 7 publications

(7 citation statements)

References 17 publications

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“…However, mean breast weight was numerically greater in birds fed on a single diet (group 3) than those of groups 1 and 2. This confirms that changes in breast development can produce transformation in the growth of other muscles as reported by Crouch et al (2002).…”

Section: A-csupporting

confidence: 89%

Growth performance and carcass characteristics of female turkeys as affected by feeding programs

et al. 2009

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A trial was conducted to evaluate the effects of different feeding programs on growth performance and carcass characteristics of Nicholas Large White female turkeys. Three different feeding programs were considered for a 12-wk period: 1) 3 diets fed for 4 wk each (starter 24% CP, grower 20% CP, and finisher diet 16% CP), 2) 2 diets fed for 6 wk each (starter-grower 22% CP and grower-finisher diet 18% CP), and 3) no change of diet for 12 wk (starter-grower-finisher diet 20% CP). From 0 to 4 wk of age, birds were fed an ad libitum common starter diet. Each dietary treatment was replicated 3 times, and feed and water were provided ad libitum. Body weight and feed consumption were measured every 2 wk, whereas carcass characteristics were evaluated at 16 wk of age. Feed intake increased as the frequency of dietary changes decreased, and feed conversion was not different between programs 1 and 3. There were no significant differences in final BW among experimental groups. For a single feeding program, the proportion of neck, bone, and feet decreased, and a greater percentage of edible meat was registered as compared with the other 2 groups. Mean carcass, breast, and thigh weights of turkeys reared under multiple diets were not different compared with other groups. Positive correlations were noted between live weight and weight of carcass, breast, thigh, drumstick, wing, and abdominal fat of turkeys. Thus, a single cycle feeding regimen in Nicholas Large White female turkeys results in similar growth performance and carcass characteristics compared with other conventional feeding programs considered in the present study.

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Section: A-csupporting

confidence: 89%

Growth performance and carcass characteristics of female turkeys as affected by feeding programs

et al. 2009

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“…The opposite was found by ZUBAIR & LEESON (1994), who indicated improvement from feed conversion in controlled feeding programs due to a decrease in the basal metabolism, in birds receiving the restricted feed. Several factors could influence bird response to feed restriction, such as the animal physiological moment and its nutritional requirements, environmental conditions, and it could be possible that males and females respond differently to the restrictions (CROUCH et al, 2002b), which might justify different results.…”

Section: Discussionmentioning

confidence: 99%

“…In literature, it is possible to find studies that demonstrate the effects of feed restriction on turkey breeders (CROUCH et al, 2002a;CROUCH et al, 2002b) or commercial turkeys in the first stages of rearing (TUMOVÁ et al, 2002). However, in the finishing stage, studies are still scarce.…”

Section: Animal Productionmentioning

confidence: 99%

Feeding programs for commercial turkeys at the finishing stage

et al. 2021

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The aim of this study was to assess the effect of feeding management on performance and carcass yield of male turkeys during finishing stage. 920 male turkeys were used, which were housed in 40 pens; each pen was comprised of experimental unit. The birds, from 91 to 154 days, were submitted to four feeding managements, based on feed intake, that were: ad libitum, where feed was permanently available to birds; controlled with a daily supply of 100% of recommended feed amount; controlled with 95% of recommended daily feed amount, and controlled with 90% of recommended daily feed amount. Each feeding treatment had ten replicates of 23 birds each. Controlled or restricted feeding management reduced feed intake, average weight, and weight gain (P <0.05), and worsened feed conversion (P <0.05). Carcass and leg weight were reduced (P <0.05) from the 5% restriction related to the recommended. Breast weight was reduced (P <0.05) with a restriction of 10%. No differences were seen when compared to carcass and leg yield and fat deposition (P> 0.05), only breast yield was reduced (P<0.05) when the birds received 90% of that recommended by the lineage, compared to the ad libitum feed management. The feeding management of male turkeys with restriction of the recommended feed amount during the finishing stage had a negative effect on the performance of the birds. However, controlled feeding at 100% of recommended to the lineage reduced feed intake and did not change the carcass weight, breast or leg yield, or fat deposition.

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“…The alterations of body composition in the present study were due to food restriction and they are in accordance with the expected. Food restriction‐induced fat loss as a consequence of higher mobilization of fat stores (Crouch et al. 2002, Cox et al.…”

Section: Discussionmentioning

confidence: 99%

“…The alterations of body composition in the present study were due to food restriction and they are in accordance with the expected. Food restrictioninduced fat loss as a consequence of higher mobilization of fat stores (Crouch et al 2002, Cox et al 2003, Soriguer et al 2003 and increased water content (Comizio et al 1998) has been described. It is well known that severe malnutrition can lead to a reduction in protein content (MacDonald & Webber 1995).…”

Section: Discussionmentioning

confidence: 99%