Performance, incidence of metabolic disturbances and endocrine variables of food-restricted male broiler chickens

Gonzáles, Elisabeth; Buyse, Johan; Loddi, MM; Takita, TS; Buys, Nadine; Decuypere, Eddy

doi:10.1080/00071669888557

Cited by 45 publications

(20 citation statements)

References 19 publications

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“…While T 3 decreased in all restricted treatments, T 4 increased significantly in R hens and there was a marked trend towards increase in QR and 2R hens, all in comparison with the AL hens. These findings are consistent with data from previous studies (Klandorf and Harvey 1985;Newcombe et al 1992;Bruggeman et al 1997;Gonzales et al 1998;Dewil et al 1999). The most detailed study in broiler breeder hens by Bruggeman et al (1997) showed, that during ontogeny (2 -24 weeks) T 3 concentration decreased and T 4 concentration increased in both restricted and ad libitum fed hens.…”

Section: Discussionsupporting

confidence: 82%

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

Kubíková¹,

Výboh²,

Košťál³

2001

Acta Vet. Brno

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Kubíková ª., P. V˘boh, ª. Ko‰Èál: Behavioural, Endocrine and Metabolice Effects of Food Restriction in Broiler Breeder Hens. Acta Vet. Brno 2001, 70: 247-257.The effects of food restriction on behaviour, endocrine and metabolic parameters were studied in immature (13 weeks old) female breeding birds of the meat-type chickens (broiler breeders). Ad libitum fed hens were compared with those subjected to one qualitative (diet diluted with 30 % hardwood sawdust) and two quantitative (the daily ration recommended by the breeding company and twice that amount) food restriction treatments. Behaviour of quantitatively restricted hens provided with one daily meal showed marked diurnal variation, while that of hens with free access to food (ad libitum fed and qualitatively restricted) was more evenly distributed throughout the day. There were elevated plasma corticosterone concentrations in hens subjected to intensive quantitative restriction. Although an increase in corticosterone concentrations of hens subjected to qualitative food restriction was lower, it was significant in comparison with ad libitum control, indicating that even mild qualitative food restriction is stressful. Compared to ad libitum fed hens, there were decreased plasma T 3 concentrations in all food restriction treatments, while plasma T 4 concentrations increased in intensively quantitatively restricted hens. Food restriction did not affect plasma glucose and total proteins, whereas triacylglycerol levels were decreased and cholesterol increased as a consequence of restriction. Creatinine level was increased in hens with less intensive quantitative restriction and plasma concentration of uric acid was decreased in qualitatively restricted hens in comparison with all other treatments. These results suggest that although behaviour of qualitatively restricted-fed hens resemble more to that of ad libitum-fed hens, their physiological status reminds more quantitatively restricted ones.

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Section: Discussionsupporting

confidence: 82%

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

Kubíková¹,

Výboh²,

Košťál³

2001

Acta Vet. Brno

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“…The level of the reduction of mortality by metabolic diseases seems to depend on the level and duration of the feed restriction program applied (Leeson and Summers, 2001). The results of feed restriction on mortality in our study (3 % including the control group, data not shown) are consistent with those of Lippens et al (2000) and Lee and Leeson (2001) but contrast with Teimouri et al (2005) and Gonzales et al (1998), who reported a higher rate (∼ 4 %). However, all these authors used only mildly restricted rations.…”

Section: Discussioncontrasting

confidence: 40%

Effects of the level and duration of feeding restriction on carcass components of broilers

et al. 2015

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Abstract. The effects of the restriction of the advised daily feed intake (ADFI) during 1 or 2 weeks on broiler body weight (BW) and carcass composition were studied. A total of 150 1-day-old male broilers (Ross-308) were randomly allotted to a control and four experimental treatments with three replicates per treatment. Broilers were subjected to a feeding restriction equal to 75 and 50 % of ADFI, either for a 7-or a 14-day period, between the 7th and 14th and 7th and 21th day of age, respectively. The BW and carcass composition were determined on day 42. From the findings, neither of the two levels of restriction nor the two time intervals had significant effects (P > 0.05) on the BW or breast and leg weight and proportion, liver and most of the body components. However, the feeding treatments show a tendency (P = 0.078) to influence the BW, with birds fed 75 % of ADFI for 14 day being heavier than the control group. For eviscerated carcass weight, an effect (P = 0.002) was observed, with birds fed 75 % of ADFI for 14 day having heavier carcasses (P < 0.05) than those in control group. The abdominal fat, both with regard to weight and proportion, was slightly influenced by dietary treatments (P > 0.05). From our results, it can be concluded that the applied feeding restrictions have a neutral or slightly beneficial effect on broiler growth traits and carcass composition.

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“…Gonzales et al (1998) reported that quantitative restriction (20% ad libitum) from 8-21 d were not differences with control in T 3 (1.30 vs 1.32 ng/ml) and T 4 (9.46 vs 8.91 ng /ml) at 42 d of age. In addition, Zhan et al (2007) reported that the concentration of T 3 (1.1 vs 1.0 ng/ml) and T 4 (63.3 vs 65.7 ng/ml) in feed withdrawal for 4 h/d (14:00 to 18:00) from 1-21 d of age were not differences than the control during the period of realimentation from 21-62 d of age.…”

Section: Hormone Thyroid (T 3 and T 4 ) Concentrationsmentioning

confidence: 99%

Thyroid Hormone and Blood Metabolites Concentrations of Broiler Chickens Subjected to Feeding Time Restriction

Azis¹,

Abbas²,

Heryandi³

et al. 2012

Med Pet

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ABSTRAKPenelitian ini bertujuan untuk menguji pengaruh pembatasan waktu makan terhadap konsentrasi hormon tiroid dan metabolit darah ayam broiler selama periode pembatasan dan pemulihan. Sebanyak 400 ekor ayam broiler unsexed strain Lohmann umur 7 hari ditempatkan pada 5 perlakuan dengan menggunakan rancangan acak lengkap dan dianalisa menggunakan ANOVA. Perlakuan terdiri atas: ransum yang diberikan ad libitum (R-0); ransum yang disediakan 2 jam pada pagi hari dari pukul 08:00-10:00 dan 2 jam pada sore hari dari pukul 16:00-18:00 dari umur 7 hingga 14 hari (R-1) dan umur 7 hingga 21 hari (R-2); ransum disediakan 4 jam pada pagi hari dari pukul 08:00-12:00 dan 4 jam pada sore hari dari pukul 16:00-20:00 dari umur 7 hingga 14 hari (R-3) dan umur 7 hingga 21 hari (R-4). Setiap perlakuan memiliki ulangan sebanyak 4 dengan jumlah ayam sebanyak 20 ekor/unit. Konsentrasi hormon tiroid dan plasma albumin pada R-2 dan R-4 lebih rendah (P<0,05) daripada R-0 selama pembatasan waktu makan dari umur 7 hingga 21 hari. Konsentrasi hormon tiroid dan metabolit darah tidak berbeda nyata diantara semua perlakuan selama periode pemulihan dari umur 21 hingga 42 hari. Disimpulkan bahwa konsentrasi hormon tiroid triiodotironin dan tiroksin (T 3 dan T 4 ) dan plasma metabolit darah (albumin) menurun selama pengaturan waktu makan 4 dan 8 jam/hari dari umur 7 hingga 21 hari, akan tetapi, kondisi demikian kembali normal selama periode pemulihan. Kata kunci: broiler, hormon tiroid, metabolit darah, pengaturan waktu makan ABSTRACTThe present study was conducted to determine the effect of feeding time restriction on thyroid hormone and blood metabolites concentration of broiler chickens during feed restriction and realimentation period. Four hundred of 7 days-old unsexed broiler chicken of Lohmann commercial strain were arranged in a completely randomized design with 5 treatments and analyzed based on ANOVA. The treatments were: chicks fed ad libitum as a control treatment (R-0); chicks had free access to feed during two periods of 2 h (08:00-10:00 and 16:00-18:00) from 7-14 d of age (R-1) and 7-21 d of age (R-2); chicks had free access to feed during two periods of 4 h (08:00-12:00 and 16:00-20:00) from 7-14 d of age (R-3) and 7-21 d of age (R-4). The treatments consisted of 4 replicates with 20 chicks each. During feeding time restriction from 7 to 21 d of age, thyroid hormone and albumin plasma concentration of R-2 and R-4 were lower (P<0.05) than R-0. There were no statistical differences among the treatments on thyroid hormone and blood metabolites during realimentation period from 21 to 42 d of age. It is concluded that thyroid hormone triiodothrionine and thyroxine (T 3 and T 4 ) and blood metabolite (albumin) decreased during feeding time restriction for 4 and 8 h per d from 7 to 21 d of age and it returns to normal during realimentation period.

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Performance, incidence of metabolic disturbances and endocrine variables of food-restricted male broiler chickens

Cited by 45 publications

References 19 publications

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

Behavioural, Endocrine, and Metabolic Effects of Food Restriction in Broiler Breeder Hens

Effects of the level and duration of feeding restriction on carcass components of broilers

Thyroid Hormone and Blood Metabolites Concentrations of Broiler Chickens Subjected to Feeding Time Restriction

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