Force Feeding Methodology and Equipment for Poultry

Teeter, R. G.; Smith, Michael; Murray, E.D.; Hall, H.

doi:10.3382/ps.0630573

Cited by 30 publications

(13 citation statements)

References 10 publications

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“…These authors observed that the first response of the bird to heat stress is a reduction in intake, and as a result of not ingesting the necessary amounts of nutrients, performance and welfare are compromised, and mortality increases. A decrease in feed intake, in an attempt to generate less heat, was also observed by Teeter et al (1984) and Bonnet et al (1997). Under chronic heat stress, the bird significantly reduces feed intake, as compared to cyclic heat stress, which can be explained by the absence of a comfort period in case of continuous heat stress.…”

Section: Methodsmentioning

confidence: 84%

Effects of the reduction of dietary heat increment on the performance, carcass yield, and diet digestibility of broilers submitted to heat stress

Laganá¹,

Ribeiro

Kessler

et al. 2007

Rev. Bras. Cienc. Avic.

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This experiment aimed at verifying the effect of different diets and thermal environments on the performance, carcass yield, and diet digestibility of 21 to 42-day-old broilers. A total number of 288 21-day-old male Ross broilers were distributed in a 2 x 2 + 2 factorial arrangement, with six replicates, including the following factors: two environments (TNE - thermoneutral: 21-25ºC and 73% RH; CHS - cyclic heat stress: 25-32ºC and 65%RH), and two diets (control: 2.4% soybean oil and 19.5% protein; summer: 4.0% soybean oil and 18.5% protein). In TNE, two additional treatments were included with feed restriction of birds fed both the control and summer diets (pair-feeding), thereby maintaining the same feed intake level for both types of diet. Diet did not influence performance, dry matter and protein digestibilities, or carcass and part yields. TNE birds had better performance (p<0.001) as compared to CHS birds, but FCR was not different. CHS birds had lower breast yield (p<0.0001), and higher thigh yield (p<0.02) than TNE birds. In the pair-feeding treatments, environment did not influence performance, but dry matter digestibility was significantly lower in CHS (p<0.03), whereas protein digestibility was not affected. The difference in feed intake was the main responsible factor for the variation in the performance of heat-stressed birds

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Section: Methodsmentioning

confidence: 84%

Effects of the reduction of dietary heat increment on the performance, carcass yield, and diet digestibility of broilers submitted to heat stress

Laganá¹,

Ribeiro

Kessler

et al. 2007

Rev. Bras. Cienc. Avic.

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“…Following a 2-day period of adaptation to chamber facilities, with food (Table 1) and water available ad libitum, the birds were fasted for 12 h and then weighed. During the subsequent 4-day preliminary and 2-day collection interval, food intake of all birds was equalised by intubating (Teeter et al, 1984) 1180 ± 3-6 g (mean ± SEM) food per chicken. This ensured that the birds metabolised food at 2% of body weight three times daily; approximately Mix supplied per kg of diet: 4-2 mg retinyl acetate, 132 Hg cholecalciferol, 35-0 mg DL-a-tocopheryl acetate, 0014 mg cyanocobalamia, 8-82 mg riboflavin, 26-5 mg niacin, 28-2 mg d-pantothenic acid, 705-5 mg choline, 1-16 mg menadione, 1-176 mg folic acid, 3-52 mg pyridoxine, 3-52 mg thiamine, 0-176 mg d-biotin.…”

Section: Methodsmentioning

confidence: 99%

Effects of ambient temperature on broiler mineral balance partitioned into urinary and faecal loss

Belay

Teeter

1996

British Poultry Science

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1. Two experiments were conducted on control (intact) and colostomised 4 to 7 week old broilers to evaluate the influence of 24 degrees C, diurnally cycling 24 to 35 degrees C and chronic 35 degrees C ambient temperatures on broiler mineral balance, urinary and faecal mineral excretion and urinary osmolar characteristics. 2. In the first experiment, colostomy had no significant effect on mineral balance. However, broilers exposed to high cycling ambient temperature reduced their retention of phosphorus, potassium, sodium, magnesium, sulphur, manganese, copper and zinc compared with birds housed at 24 degrees C. 3. Despite the minimal effect of high ambient temperature on urine production, minerals excreted disproportionately excreted in urine included potassium, magnesium, phosphorus and sulphur while copper and magnesium were lost primarily via the faeces. 4. In the second experiment, exposure to 35 degrees C increased urine output from 50.7 ml/12 h per kg of body weight at 24 degrees C to 101.3 ml/12 h per kg of body weight and was associated with an increased urine:water ratio and reduced urine osmolality. 5. Reduced urinary chloride and higher potassium, phosphorus, sulphur, sodium, magnesium, calcium and manganese excretion was observed for broilers housed in under high ambient temperatures compared to 24 degrees C. 6. These studies suggest that high ambient temperatures adversely influence mineral metabolism and, furthermore, that the route of excretion varies with the specific mineral and the environmental temperature exposure.

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“…During the post-hatching period, ambient temperature has significantly affects broiler performance, including feed intake (Teeter et al, 1984;Quinteiro Filho et al, 2010), weight gain, and feed conversion ratio. Furthermore, broilers under heat stress exhibit changes in the skeletal system development, which negatively influences their performance and consequently, farm productivity (Nääs, 2008).…”

Section: Introductionmentioning

confidence: 99%

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

Sgavioli

Domingues

Santos

et al. 2016

Rev. Bras. Cienc. Avic.

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Ash, mineral density, femoral bone strength, tibia, vitamin C. ABSTRACTThis experiment was conducted to evaluate the effect of in-ovo ascorbic acid (AA) injection on the bone development of broilers submitted to heat stress during incubation and rearing. One thousand (1,000) Cobb ® fertile broiler eggs were randomly distributed according to the weight into five incubators, with 200 eggs per incubator. The incubation treatments were: eggs not injected with AA and incubated at 37.5°C; eggs not injected with AA and incubated at 39°C; and eggs injected with 6 µg AA/100 µL water prior to incubation and incubated at 39ºC. The hatched birds were reared at three different house temperatures: cold, thermoneutral, or and hot. The high incubation temperature negatively influenced broilers' bone characteristics. The femur of the birds hatched from eggs incubated at 39°C and injected with AA presented lower shaft mineral density, lower maximum force and lower elongation at maximum force. Their tibia presented reduced mineral density at the proximal and distal epiphysis. In-ovo AA injection of eggs incubated at high temperature did not minimize the negative effects of high rearing temperature on the performance andbone development of broiler chickens reared until 42 days of age.

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Force Feeding Methodology and Equipment for Poultry

Cited by 30 publications

References 10 publications

Effects of the reduction of dietary heat increment on the performance, carcass yield, and diet digestibility of broilers submitted to heat stress

Effects of the reduction of dietary heat increment on the performance, carcass yield, and diet digestibility of broilers submitted to heat stress

Effects of ambient temperature on broiler mineral balance partitioned into urinary and faecal loss

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing

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