Effect of dietary ascorbic acid (vitamin C) supplementation on the performance of broiler chickens in a tropical environment

Njoku, P. C.

doi:10.1016/0377-8401(86)90046-5

Cited by 73 publications

(37 citation statements)

References 4 publications

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“…Ascorbic acid and chromium are known to increase the use of corticosteroids released during stress (Pardue and Thaxton, 1984;, thus playing an important role in responding to stress. With respect to dietary ascorbic acid supplementation under stress in terms of better poultry performance, the results of the present study are in agreement with the findings of several researchers (Orban et al, 1993;Kafri and Cherry, 1984;Njoku, 1986;Kutlu and Forbes, 1993). It is a well-known fact that growth rate and egg production decrease when ambient temperature goes below or above the thermally neutral zone (Arad and Marder, 1982;Ensminger et al, 1990;Sari, 1993).…”

Section: Discussionsupporting

confidence: 81%

Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hens

Şahin¹,

Şahin²

2001

Vet. Med. - Czech

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This experiment was conducted to evaluate the effect of vitamin C (L-ascorbic acid) and chromium (chromium picolinate, Cr Pic) on egg production, some egg characteristics, and digestibility of nutrients in laying hens (Hy-Line) reared under a low ambient temperature (6.2°C). Two hundred and ten laying hens (32 week-old) were divided into seven groups, 30 hens per group. The treatment groups were designed in a 2 × 3 factorial arrangement using two levels of vitamin C (125 and 250 mg/kg of diet) and three levels of chromium picolinate (200, 400, or 800 µg/kg of diet), and control group was fed basal diet.The highest values of performance were obtained if 250 mg/kg vitamin C was supplemented with either 400 or 800 µg Cr per kg of diet. An interaction between vitamin C and chromium for egg production (P = 0.05) and feed efficiency (P = 0.02) was detected. Similarly, egg weight, specific gravity, egg shell thickness, egg shell weight and Haugh unit improved with diet containing 250 mg vitamin C and either 400 or 800 µg Cr per kg of diet (P ≤ 0.05). Digestibility of dry matter (DM), ash, organic matter (OM), crude protein (CP), and ether extract (EE) were higher with higher dietary vitamin C (P ≤ 0.05) and also with higher Cr (P ≤ 0.05). There were no interactions between vitamin C and chromium detected for any parameters measured for egg quality in terms of egg weight, specific gravidity, egg shell thickness, egg shell weight and Haugh unit and digestibility of nutrients (P ≥ 0.28). Data obtained in the present study shows that a combination of 250 mg vitamin C and 400 µg chromium per kg of diet gave the best results in laying hens reared under a low ambient temperature and a conclusion is suggested that such a diet can be considered as a protective management practice in poultry to alleviate, at least in part, the depressive effect of cold stress on poultry performance.

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Section: Discussionsupporting

confidence: 81%

Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hens

Şahin¹,

Şahin²

2001

Vet. Med. - Czech

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“…However, these authors did not expose birds to continuous heat as in the present study. In another study, Ross x Ross broilers reared in a hot environment (32 to 3%) and fed a diet supplemented with 200 ppm AA had a body weight of 1.90 kg compared with 1.66 kg for the control group after eight weeks (Njoku, 1984). These data obtained in a natural environment are difficult to compare with those obtained in an environmentally regulated room.…”

Section: Resultsmentioning

confidence: 97%

“…Pardue (1983) reported a total absence of growth stimulation in male broiler cockerels fed diets supplemented with 250 to 1000 ppm AA, however, females had a significantly greater body weight. Njoku (1984) reported a significant increase in body weight in broiler chicks reared in a hot tropical environment and fed a diet supplemented with 200 ppm AA. Kafri and Cherry (1984) also reported a greater body weight in 36-day-old heat-stressed broilers fed a diet supplemented with 100 ppm AA.…”

Section: Introductionmentioning

confidence: 99%

Performance and Humoral Immune Response in Heat-Stressed Broilers Fed an Ascorbic Acid Supplemented Diet

Tuekam

Miles

Butcher

1994

Journal of Applied Animal Research

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“…In the finisher diets, vitamin C levels were 21 and 288 mg/kg in the basal and supplemented diets, respectively, and vitamin E levels were 18 and 93 mg/kg in the basal and supplemented diets, respectively. The levels of supplementation for vitamins C (Njoku, 1986;Kutlu and Forbes, 1993) and E (Sahin et al, 2001;Niu et al, 2009) were selected based on previous studies.…”

Section: Animals and Experimental Designmentioning

confidence: 99%

Carcass and meat quality traits of chickens fed diets concurrently supplemented with vitamins C and E under constant heat stress

Zeferino

Komiyama

Pelícia

et al. 2016

Animal

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The objective of this study was to determine if a diet supplemented simultaneously with vitamins C and E would alleviate the negative effects of heat stress, applied between 28 and 42 days of age, on performance, carcass and meat quality traits of broiler chickens. A total of 384 male broiler chickens were assigned to a completely randomized design, with a 2 × 3 factorial arrangement (diet with or without vitamin supplementation and two ambient temperatures plus a pair-feeding group) and 16 replicates. Chickens were kept in thermoneutral conditions up to 28 days of age. They were then housed in groups of four per cage, in three environmentally controlled chambers: two thermoneutral (22.5 and 22.6°C) and one for heat stress (32°C). Half the chickens were fed a diet supplemented with vitamins C (257 to 288 mg/kg) and E (93 to 109 mg/kg). In the thermoneutral chambers, half of the chickens were pair-fed to heat stressed chickens, receiving each day the average feed intake recorded in the heat stress chamber in the previous day. Meat physical quality analyses were performed on the pectoralis major muscle. No ambient temperature × diet supplementation interaction effects were detected on performance, carcass, or meat quality traits. The supplemented diet resulted in lower growth performance, attributed either to a carry-over effect of the lower initial BW, or to a possible catabolic effect of vitamins C and E when supplemented simultaneously at high levels. Heat stress reduced slaughter and carcass weights, average daily gain and feed intake, and increased feed conversion. Growth performance of pair-fed chickens was similar to that of heat stressed chickens. Exposure to heat stress increased carcass and abdominal fat percentages, but reduced breast, liver and heart percentages. Pair-fed chickens showed the lowest fat percentage and their breast percentage was similar to controls. Heat stress increased meat pH and negatively affected meat color and cooking loss. In pair-fed chickens, meat color was similar to the heat stressed group. Shear force was not influenced by heat stress, but pair-fed chickens showed the tenderest meat. In conclusion, reduction in growth performance and negative changes in meat color in heat stressed chickens were attributed to depression in feed intake, whereas negative changes in body composition, higher meat pH and cooking loss were credited to high ambient temperature per se. Diet supplementation with vitamins C and E as antioxidants did not mitigate any of these negative effects.

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Effect of dietary ascorbic acid (vitamin C) supplementation on the performance of broiler chickens in a tropical environment

Cited by 73 publications

References 4 publications

Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hens

Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hens

Performance and Humoral Immune Response in Heat-Stressed Broilers Fed an Ascorbic Acid Supplemented Diet

Carcass and meat quality traits of chickens fed diets concurrently supplemented with vitamins C and E under constant heat stress

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