PERFORMANCE AND CARCASS QUALITY OF BROILER TOM TURKEYS SUBJECTED TO A POST-HATCH FAST AND OFFERED STARTING RATIONS OF DIFFERENT NUTRIENT CONCENTRATION

Commercial source, medium-type male poults were either placed in floor pens with food and water within 6 h after hatching or delayed a subsequent 24 h. Starting feed offered in each case was either of a normal (28% crude protein and 2,850 kcal ME/kg) or high (30% and 3,040 kcal) nutrient concentration. During the initial 2 wk, birds that had been fasted gained less weight but had a better feed conversion than those placed early. Poults which received a ration having a high nutrient concentration gained more weight and had a better feed conversion than those offered the normal diet. Mortality at this time was greater with birds subjected to a fast than those placed early. Having access to the higher nutrient concentration ration led to a greater mortaility than if the normal diet was employed. Body weight differences established during the first 2 wk remained throughout the experiment. Feed conversions of rations common to all groups during the subsequent 2- to 6-, 6-to 10- and 10- to 14-wk periods were not influenced by the early treatments after 6 wk of age. Slaughter at 14 wk did not reveal any differences in apparent carcass yield, conformation or finish grade. Degree of fleshing was reduced when poults were subjected to a post-hatch fast and partially improved when the high nutrient starting diet was fed. Effects of fasting and early nutrition on mortality and carcass changes are explained in terms of biochemical events occurring with the neonate.

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On the Internalisation, Intraplasmodial Carriage and Excretion of Metallic Nanoparticles in the Slime Mould, Physarum Polycephalum

International Journal of Nanotechnology and Molecular Computation ◽

10.4018/ijnmc.2011070101 ◽

2011 ◽

Vol 3 (3) ◽

pp. 1-14 ◽

Cited By ~ 15

Author(s):

Richard Mayne ◽

David Patton ◽

Ben de Lacy Costello ◽

Andrew Adamatzky ◽

Rosemary Camilla Patton

Keyword(s):

Metallic Nanoparticles ◽

Physarum Polycephalum ◽

Nutrient Concentration ◽

Laboratory Experiments ◽

Micro Scale ◽

Naked Eye ◽

High Nutrient ◽

High Nutrient Concentration ◽

Silver Metal ◽

Plasmodium Of Physarum Polycephalum

The plasmodium of Physarum polycephalum is a large single cell visible with the naked eye. When inoculated on a substrate with attractants and repellents the plasmodium develops optimal networks of protoplasmic tubes which span sites of attractants (i.e. nutrients) yet avoid domains with a high nutrient concentration. It should therefore be possible to program the plasmodium towards deterministic adaptive transformation of internalised nano- and micro-scale materials. In laboratory experiments with magnetite nanoparticles and glass micro-spheres coated with silver metal the authors demonstrate that the plasmodium of P. polycephalum can propagate the nano-scale objects using a number of distinct mechanisms including endocytosis, transcytosis and dragging. The results of the authors’ experiments could be used in the development of novel techniques targeted towards the growth of metallised biological wires and hybrid nano- and micro-circuits.

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Growth and carcass characteristics of camels given different level of protein and energy in Iran

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200003793 ◽

1999 ◽

Vol 1999 ◽

pp. 224-224

Author(s):

Y. Rouzbehan ◽

A. Shadmanesh ◽

N. Debiri ◽

M. Eslami

Keyword(s):

Crude Protein ◽

Carcass Characteristics ◽

Carcass Quality ◽

Dietary Energy ◽

Initial Weight ◽

Factorial Anova ◽

Protein Levels ◽

Main Effects

Recently ,there is an incrase interest in fattening camals in Iran .This trial aimed to define the influence of dietary energy and protein levels on performance and carcass quality of camels in khorasan province.For 80 days, nine diets with three metaboliseble energy 10.9, 8.8 or 7.6 MJ /kg DM and three crude protein levels 140, 120, or 100 g/kg DM were offerd ad lib to thirty six camels (mean initial weight 183 kg ± 7.7) , where each treatment were randomly allocated to four animals, that were housed individually. Food intakes were recorded daily. Throughout the trial , all animals were weighed at fortnightly intervals. At the end of the project ,two animals from each treatment were slaughtered and carcass quality were determined. Data were analysed as a 3x3 factorial Anova, with energy and protein were the main effects.

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Effects of Long-Term Gentle Handling on Behavioral Responses, Production Performance, and Meat Quality of Pigs

Animals ◽

10.3390/ani10020330 ◽

2020 ◽

Vol 10 (2) ◽

pp. 330 ◽

Cited By ~ 2

Author(s):

Chao Wang ◽

Yongjie Chen ◽

Yanju Bi ◽

Peng Zhao ◽

Hanqing Sun ◽

...

Keyword(s):

Heart Rate ◽

Meat Quality ◽

Average Daily Gain ◽

Production Performance ◽

Control Group ◽

Carcass Quality ◽

Feed Conversion ◽

Significant Difference

In order to investigate the effect of gentle handling on the behavior, performance, and meat quality of pigs from weaning to slaughter, 144 6-week-old weaned hybrid Min piglets (a native breed) were selected and divided into a handling group (HG: 9 pens × 8 pigs) and a control group (CG: 9 pens × 8 pigs). After 6 weeks of handling, we observed and then evaluated the pigs’ responses to a handler with behavioral scores. Moreover, we measured heart rate and production performance. Three pigs were randomly selected from each of the 18 pens and divided into a handling group (HG: n = 27) and a control group (CG: n = 27), and the HG pigs were given gentle handling until slaughter. Subsequently, we evaluated meat quality and the production performance of six pigs from each group. The results show that AA test (approaching–avoidance test) scores in HG pigs, the number of contacts with the handler and absence of contact with the handler, were significantly higher than in the CG pigs (p < 0.01). The occurrences of avoidance and looking at the handler were lower in the HG than in the CG group (p < 0.01); however, heart rate was not found to be significantly different between the two groups (p = 0.63). No significant difference was found in the average daily gain, average daily feed intake, and feed conversion ratio between the two groups during the two periods (p > 0.05). The b* value was determined 45 min after slaughter, and it was significantly lower in the HG than that in the CG group (p = 0.002). Furthermore, 2 h after slaughter, the L value of the HG group was significantly higher than that of the CG group (p = 0.047), but no difference was observed in carcass quality or other meat quality indicators between the two groups (p > 0.05). The results indicate that gentle handling could reduce pigs’ anxiety and increase their willingness to approach the handler, increasing the intimacy of the pigs and handlers. However, long-term gentle handling had little effect on pig performance, carcass quality, and meat quality.

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Oral Administration of Estrogens and Their Effect on Growth, Feed Conversion and Carcass Quality of Growing Turkeys

Poultry Science ◽

10.3382/ps.0371284 ◽

1958 ◽

Vol 37 (6) ◽

pp. 1284-1288 ◽

Cited By ~ 1

Author(s):

R.D. Carter ◽

J.W. Wyne ◽

V.D. Chamberlin ◽

M.G. McCartney

Keyword(s):

Oral Administration ◽

Carcass Quality ◽

Feed Conversion ◽

Effect On Growth

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Effect of dietary nutrient concentration on the performance of hens beginning lay in early summer

Australian Journal of Experimental Agriculture ◽

10.1071/ea9860405 ◽

1986 ◽

Vol 26 (4) ◽

pp. 405 ◽

Cited By ~ 1

Author(s):

AS Pell ◽

RW Polkinghorne

Keyword(s):

Egg Production ◽

Nutrient Concentration ◽

Early Summer ◽

Nutrient Concentrations ◽

Egg Mass ◽

Meat Meal ◽

High Nutrient ◽

Dietary Nutrient ◽

Metabolisable Energy ◽

High Nutrient Concentration

Hens of 2 laying strains were fed ad libitum from 20 to 72 weeks of age on 3 diets of different nutrient concentration. The start of lay coincided with the onset of the hot summer. During summer, birds on the diet with high nutrient concentration (HNC, 19% protein, 12.6 MJ metabolisable energy (ME)/kg) had significantly higher intakes of ME (3% higher) and other nutrients than did those on the diets of medium (MNC, 18% protein, 11.7 MJ ME/kg) and low (LNC, 16% protein, 11.4 MJ ME/kg) nutrient concentration. Egg weight. egg mass and feed efficiency were greater on the HNC diet than on the MNC and LNC diets. Birds on the HNC diet produced more eggs (10% more) than those on the LNC diet. Over the cooler periods, feed intakes were inversely related to energy level, with no dietary effects on egg production. It is concluded that grain- and meat meal-based diets of low nutrient concentrations are unlikely to support maximum performance in early lay in hot conditions and that increased dietary nutrient concentrations can improve performance via increased nutrient intake.

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Evaluation of feeding rate based on growth, feed conversion, protein gain and carcass quality of fingerling Indian major carp,Catla catla(Hamilton)

Aquaculture Research ◽

10.1111/j.1365-2109.2012.03245.x ◽

2012 ◽

Vol 45 (3) ◽

pp. 439-447 ◽

Cited By ~ 6

Author(s):

Shabi Fatma Abidi ◽

Mukhtar A. Khan

Keyword(s):

Feeding Rate ◽

Catla Catla ◽

Carcass Quality ◽

Feed Conversion ◽

Indian Major Carp

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A note on the use of distillers' by-products in diets for growing pigs

Animal Science ◽

10.1017/s0003356100026878 ◽

1969 ◽

Vol 11 (2) ◽

pp. 259-261 ◽

Cited By ~ 1

Author(s):

R. M. Livingstone ◽

D. M. S. Livingston

Keyword(s):

Growth Rate ◽

Crude Protein ◽

Dry Matter ◽

Growing Pigs ◽

Distillers Grains ◽

Carcass Quality ◽

By Products

SUMMARYA by-product of the distilling industry designated ‘distillers’ grains plus solubles' was evaluated using forty-eight growing pigs. The product was included at 0, 14·7 and 25% in three diets in which the proportion of other constituents was adjusted to give similar concentrations of TDN, dry matter and crude protein.The performance and carcass quality of pigs receiving 0% and 14·7% of the by-product in the diet was similar, but inclusion at 25% significantly reduced growth rate (g/day) from 632 for the 0% diet to 578.

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A nutritional evaluation of diets containing meat meal for growing pigs. 7. The value of meat meal as a potein supplement to barley, oats, sorghum and wheat based diets

Australian Journal of Experimental Agriculture ◽

10.1071/ea9700539 ◽

1970 ◽

Vol 10 (46) ◽

pp. 539 ◽

Cited By ~ 3

Author(s):

ES Batterham ◽

MB Manson

Keyword(s):

Crude Protein ◽

Dry Matter ◽

Protein Quality ◽

Growing Pigs ◽

Feed Conversion ◽

Nutritional Evaluation ◽

Digestible Energy ◽

Dry Matter Digestibility ◽

Meat Meal

The comparative value of meat meal as a protein supplement to barley, oats, sorghum, and wheat-based diets was investigated for pigs during the 18-45 kg growth phase. Diets were offered at the rate of 129 kcal digestible energy and 7 g crude protein per kg liveweight per day. Two methods of estimating digestible energy in the diets were also examined. The major differences recorded (Pt0.05) were : Growth rates-Wheat barley and sorghum, oats and barley sorghum. Feed conversion ratios-Wheat barley: oats and sorghum. Protein efficiency ratios-Wheat and oats barley sorghum. Lean in ham-Oats and barley sorghum and wheat. When the magnitude of all differences was considered the results indicated that the protein quality of the sorghum-meat meal diet was lower than that of the other three diets. The correlation between digestible energy values estimated by two methods (energy in feed X dry matter digestibility) and (energy in feed-energy in faeces/feed intake) was significant (r = 0.98)

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The Effects of Decreasing Dietary Crude Protein on the Growth Performance, Feed Efficiency and Meat Quality of Finishing Charolais Bulls

Animals ◽

10.3390/ani9110906 ◽

2019 ◽

Vol 9 (11) ◽

pp. 906 ◽

Cited By ~ 2

Author(s):

Cortese ◽

Segato ◽

Andrighetto ◽

Ughelini ◽

Chinello ◽

...

Keyword(s):

Meat Quality ◽

Crude Protein ◽

Average Daily Gain ◽

Daily Weight Gain ◽

Feed Conversion ◽

Gross Margin ◽

Low Protein ◽

Dietary Crude Protein ◽

Feed Conversion Rate

This study aimed to evaluate the effect of decreasing dietary crude protein (CP) on the performance of finishing Charolais bulls in the Italian rearing system. Animals were fed two diets, differing only in the CP level (low protein (LP), 13.5% CP versus control (CON), 15.0% CP). Dry matter (DM) intake (DMI) and animals’ weights were recorded to obtain average daily gain (ADG) and feed conversion rate (FCR). Feed and fecal samples were collected to evaluate digestibility of diet components. Daily cost of the ration (DRC), feed cost per kg of daily weight gain (CDG) and daily gross margin (DGM) were calculated to analyze the possible benefits of decreasing the protein level. Meat quality analyses were also conducted. Higher DMI (10.6 versus 10 kg/d; p < 0.05) and ADG (1.47 versus 1.36 kg/d; p < 0.05) were observed for CON. No differences in FCR or digestibility were found. Even if the DRC was lower (p < 0.05) for the LP diet (2.26 versus 1.97 €; CON versus LP), no difference was reported for CDG and DGM. Meat lightness and redness were significantly lower and higher in the LP, respectively. To conclude, the CP requirement in these rearing conditions appeared to be higher than 13.5%.

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