Effects of Feed Restriction and Diet Nutrient Density During Re-Alimentation on Growth Performance, Carcass Traits, Organ Weight, Blood Parameters and the Immune Response of Broilers

Rahimi, S Mohammad; Seidavi, Alireza; Sahraei, M.; Blanco, Francisco Peña; Schiavone, Achille; Marín, Andrés Luis Martínez

doi:10.4081/ijas.2015.4037

Cited by 24 publications

(22 citation statements)

References 31 publications

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“…Additionally, after four weeks of consuming the QT2 diet, a compensatory growth was observed in the QT2 group. According to some authors, early feed restriction reduces growth performance, but compensatory growth in the refeeding period accelerates organism growth to reach the standard final live weight of animals [31,32]. During refeeding and compensatory growth, the secretion of insulin is sharply enhanced and plasma growth hormone concentrations remain high.…”

Section: Discussionmentioning

confidence: 99%

Effects of Dietary Quebracho Tannin on Performance Traits and Parasite Load in an Italian Slow-Growing Chicken (White Livorno Breed)

Cossato

Castillo

Franzoni

et al. 2020

Animals

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Tannins have shown numerous biological activities and are very appreciated in food animal production, especially for their antimicrobial, antiparasitic, antioxidant, anti-inflammatory and antivirus effects. The aim of the present study was to evaluate the effect of two levels of dietary Quebracho tannin (QT) on growth and performance traits, and possible effects on intestinal parasite load in Italian White Livorno pullets. A 140-day trial was carried out on 180 35-day-old females, fed on two levels of dietary QT inclusion: 0%, 1% and 2%. Birds were reared under free-range conditions. Dietary Quebracho tannin may be used up to 1% in growing female White Livorno chickens without any adverse effects. The results observed in this study on the use of dietary QT at 2% might have not reflected the real effect on performance traits due to the initial inclusion of dietary QT at 3%. Nevertheless, by reducing QT to 2%, a progressive normalization of body weight gain, feed intake and feed conversion ratio was observed, resulting in compensatory growth. QT was demonstrated to drastically reduce fecal outputs of Nematodes eggs (Ascaridia spp. and Heterakis spp.) and Coccidia oocytes (Eimeria spp.). The inclusion of 2% produced highly dry droppings.

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Section: Discussionmentioning

confidence: 99%

Effects of Dietary Quebracho Tannin on Performance Traits and Parasite Load in an Italian Slow-Growing Chicken (White Livorno Breed)

Cossato

Castillo

Franzoni

et al. 2020

Animals

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“…The lower feed intake in broilers fed the sucrose-lysine supplementation diet may have resulted in lower energy delivery and this may have enhanced fat lipolysis in adipose tissue, resulting in higher HDL levels. It should be mentioned that serum lipoprotein levels are genetics-and age-dependent (Piotrowska et al, 2011) and therefore, may widely vary, as noted in the literature (Silva et al, 2007;Piotrowska et al, 2011;Rahimi et al, 2015). Finally, the sucrose-lysine-based diet may negatively affect poultry meat quality due to changes in morphology and the mechanism of nutrient absorption in the digestive system (Al-Hijazeen and Al-Rabadi, 2017).…”

Section: Resultsmentioning

confidence: 99%

Effects of Sucrose-based High-lysine Diet on Blood Chemistry, Growth Performance, and Gastrointestinal Morphology of Broiler Chickens During the Growing Stage

et al. 2018

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This study aimed to investigate the effect of replacing fat in broiler grower diet with sucrose combined with supplementation of the synthetic amino acid lysine on growth performance, gastrointestinal morphology, and blood biochemical parameters in broiler chickens. Broilers were raised for 21 days and then divided into two treatment groups (n＝24 in each group). Two dietary treatments were used: corn-soy-based diet with oil (control) and cornsoy-based diet formulated with sucrose (3.30%) and lysine hydrochloride (3.36%). The experimental period was 21 days (from 21 to 42 days of age). At the end of week 6, all the birds in each treatment were slaughtered via neck slit, defeathered, and eviscerated for carcass and intestinal morphological characterization. Blood samples were collected to measure blood lipoprotein, triglyceride, and cholesterol levels. The results showed that supplementation of sucrose and lysine hydrochloride to broiler ration significantly (P＜0.05) decreased feed intake by half and reduced average daily gain during the study period compared to those observed in broilers fed control diet. Further, this supplementation significantly altered gastrointestinal morphology and blood lipoprotein (HDL and LDL) and total cholesterol levels. In conclusion, corn-soy-based diet fortified with sucrose (3.30%) and lysine hydrochloride (3.36%) within current nutrient specifications has a negative effect on broiler growth performance.

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“…Although it is not statistically significant, URDANETA RINCON and LEESON (2002) observed an increase in abdominal fat in broiler chickens of 42 d of age, which had been feed restricted from 5 to 10 d of age, suggesting that the feed M. Davoodi-Oman et al: Feed restrictions and broiler chickens restricted animals could be overeating, which cannot be excluded in the present study. RAhImI et al (2015) hypothesised that the increase in fat accumulation after a mild feed restriction may be due to the alteration of the metabolism, the protein level of the diet, and the activity of enzymes involved in lipogenesis. In contrast, ShABANI et al 2015did not find any effect of feed restriction up to 25% of ad libitum feed intake on the RW of abdominal fat.…”

Section: Discussionmentioning

confidence: 99%

“…Considering also the lack of influence M. Davoodi-Oman et al: Feed restrictions and broiler chickens on the response to vaccination and to SRBC antigens, in this study the feed restriction did not alter the immune status of the animals or the efficacy of vaccinations. RAhImI et al (2015) showed that a feed restriction of 15 and 30% of ad libitum feed intake had a low influence on the immunity of broiler chicken. Also FASSBINDER-ORTh and kARASOv (2006) did not find any effect of feed restriction up to 54% on the RW of the bursa of Fabricius and spleen.…”

Section: Discussionmentioning

confidence: 99%

Effect of feed restrictions on performance, blood variables and immunity of broiler chickens

et al. 2019

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Genetic selection has led to an increase in performance and lean tissue deposition in broiler chickens which have become increasingly susceptible to disease. To reduce this susceptibility, various feed restriction programs have been proposed, albeit with highly variable results. This study investigated the effects of the duration and intensity of quantitative feed restriction in the early rearing period on the performance, blood parameters and immunity of broiler chickens. Two hundred and seventy chicks were randomly assigned to a 4 × 2 factorial arrangement to examine the effects of 2 durations (7 and 14 d) and 4 levels of feed restriction (5, 10, 15, and 20%). One control (Con) group was included. Feed intake (FI) and weight gain (WG) were recorded, and the feed conversion ratio (FCR) calculated weekly. At slaughter (42 d of age), blood was collected, and the carcass composition and characteristics of the gastrointestinal tract were assessed. In comparison with the Con, feed restrictions improved FCR (P<0.01), increased relative weight (RW) of the breast (P<0.05), and abdominal fat (P<0.01), and reduced the RW, as well as the dimension of some gut segments. Feed restriction showed limited influence on blood variables, the humoral immune response to Influenza and Newcastle disease vaccinations, and on response to injection of sheep red blood cells. Feed restrictions up to 20% for 7 or 14 d are an appropriate strategy to improve the FCR and the RW of breast, with a limited effect on blood variables, and without significant effects on the immunity of broiler chickens.

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Effects of Feed Restriction and Diet Nutrient Density During Re-Alimentation on Growth Performance, Carcass Traits, Organ Weight, Blood Parameters and the Immune Response of Broilers

Cited by 24 publications

References 31 publications

Effects of Dietary Quebracho Tannin on Performance Traits and Parasite Load in an Italian Slow-Growing Chicken (White Livorno Breed)

Effects of Dietary Quebracho Tannin on Performance Traits and Parasite Load in an Italian Slow-Growing Chicken (White Livorno Breed)

Effects of Sucrose-based High-lysine Diet on Blood Chemistry, Growth Performance, and Gastrointestinal Morphology of Broiler Chickens During the Growing Stage

Effect of feed restrictions on performance, blood variables and immunity of broiler chickens

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