scholarly journals Utilization of metabolizable energy by young broilers and birds of intermediate growth rate

2005 ◽  
Vol 84 (7) ◽  
pp. 1069-1076 ◽  
Author(s):  
G Lopez ◽  
S Leeson
Keyword(s):  
Growth Rate ◽  
Metabolizable Energy ◽  
Intermediate Growth

scholarly journals Partitioning of Retained Energy in Broilers and Birds with Intermediate Growth Rate

2007 ◽  
Vol 86 (10) ◽  
pp. 2162-2171 ◽  
Author(s):  
G. Lopez ◽  
K. de Lange ◽  
S. Leeson
Keyword(s):  
Growth Rate ◽  
Intermediate Growth

scholarly journals Growth and Energy Requirements of Captive-Reared Common Loon (Gavia Immer) Chicks

The Auk ◽  
2007 ◽  
Vol 124 (4) ◽  
pp. 1158-1167
Author(s):  
François Fournier ◽  
William H. Karasov ◽  
Kevin P. Kenow ◽  
Michael W. Meyer
Keyword(s):  
Growth Rate ◽  
Body Mass ◽  
Developmental Change ◽  
Assimilation Efficiency ◽  
Bird Species ◽  
Metabolizable Energy ◽  
Energy Requirements ◽  
Growth Rate Constant ◽  
Gavia Immer ◽  
Common Loon

AbstractWe measured the energy requirements during postnatal development of six hand-reared Common Loon (Gavia immer) chicks using continuous feeding trials and doubly labeled water. At fledging, the mean (± SE) body mass of chicks was 3,246 ± 51 g. They reached asymptotic body mass in ≈66 days and had a mean growth rate constant of 0.089 ± 0.002 day−1, which was greater than growth rate constants of other, similar-sized precocial birds. Between hatch and day 66, chicks allocated 16.5% of their metabolizable energy to new tissue, lower than the average for other bird species (20%), which might be expected considering their precocial mode of development. There was a developmental change in the assimilation efficiency of food (metabolizable energy coefficient), with a mean of 0.64 ± 0.03 in chicks aged 21 days, rising to 0.83 ± 0.07 in chicks aged 35 days.Les besoins en énergie durant la croissance chez des jeunes Gavia immer élevés en captivité

Comparative feeding value of expeller-processed undecorticated and decorticated cottonseed cakes for growing chicks

1978 ◽  
Vol 91 (3) ◽  
pp. 531-541 ◽  
Author(s):  
N. K. Sharma ◽  
G. N. Lodhi ◽  
J. S. Ichhponani
Keyword(s):  
Growth Rate ◽  
Free Gossypol ◽  
Crude Protein ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Internal Organs ◽  
Protein Utilization ◽  
Feeding Value ◽  
Finisher Diets ◽  
Effect On Growth

SummaryExperiments were made to evaluate the feeding value of undecorticated (UCS) and decorticated (DCS) cottonseed cakes and defatted DCS for egg-type starter, broiler starter and finisher diets for chicks. The results showed that UCS on average contained 22% crude protein, 0·06% free- and 0·33% bound-gossypol and 4·9% available carbohydrate. The corresponding values for DCS were 38, 0·04, 0·63 and 9·5%, respectively. Average metabolizable energy (ME) content of UCS, DCS and defatted DCS was 7·94, 11·77 and 9·42 MJ/kg, respectively. Apparent protein digestibilities of UCS, DCS and defatted DCS were 42, 47 and 36%, respectively. Although UCS had no effect on growth rate of egg-type and meat-type chicks when fed as 15% of the diet, feed conversion was adversely affected. Feeding DCS to broiler starter and finisher chicks as 30% of the diet, replacing groundnut cake (GN) had no effect on growth rate and efficiency of protein utilization but feed conversion was affected. The chicks of either breed were able to tolerate 0·02% free-gossypol of the diet derived from UCS or DCS without any adverse effect on growth rate and internal organs.

The effect of breed and dietary energy concentration on lamb growth, carcass composition and meat quality

1996 ◽  
Vol 1996 ◽  
pp. 109-109
Author(s):  
M.I. Mustafa ◽  
G.M. Webster ◽  
Gillian M. Povey
Keyword(s):  
Growth Rate ◽  
Meat Quality ◽  
Tissue Growth ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Energy Concentration ◽  
Eating Quality ◽  
Lamb Growth ◽  
Different Levels

Previous trials at Newcastle have shown that plane of nutrition affects the growth performance, carcass composition and eating quality of lambs (Mustafa and Webster, 1995). It has also been found that lean tissue growth rate, a characteristic it is possible to manipulate nutritionally, influences meat quality in pigs and cattle (Whipple et al., 1990; Blanchard et al., 1995), although no similar studies have been undertaken with growing lambs. This experiment was designed to study the effect of four diets with different levels of metabolizable energy (ME) but with the same crude protein and undegradeable protein (DUP) levels on growth, carcass composition, tissue growth rate and meat quality characteristics of lambs of two breeds.

The effect of breed and dietary energy concentration on lamb growth, carcass composition and meat quality

1996 ◽  
Vol 1996 ◽  
pp. 109-109
Author(s):  
M.I. Mustafa ◽  
G.M. Webster ◽  
Gillian M. Povey
Keyword(s):  
Growth Rate ◽  
Meat Quality ◽  
Tissue Growth ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Energy Concentration ◽  
Eating Quality ◽  
Lamb Growth ◽  
Different Levels

Previous trials at Newcastle have shown that plane of nutrition affects the growth performance, carcass composition and eating quality of lambs (Mustafa and Webster, 1995). It has also been found that lean tissue growth rate, a characteristic it is possible to manipulate nutritionally, influences meat quality in pigs and cattle (Whipple et al., 1990; Blanchard et al., 1995), although no similar studies have been undertaken with growing lambs. This experiment was designed to study the effect of four diets with different levels of metabolizable energy (ME) but with the same crude protein and undegradeable protein (DUP) levels on growth, carcass composition, tissue growth rate and meat quality characteristics of lambs of two breeds.

Mustard cake a substitute for groundnut cake in egg-type and meat-type chick diets

1977 ◽  
Vol 89 (3) ◽  
pp. 759-765 ◽  
Author(s):  
V. K. Cilly ◽  
G. N. Lodhi ◽  
J. S. Ichhponani
Keyword(s):  
Growth Rate ◽  
Body Composition ◽  
Crude Protein ◽  
Nutritive Value ◽  
Energy Content ◽  
The Body ◽  
Metabolizable Energy ◽  
Groundnut Cake ◽  
True Protein ◽  
Meat Type

SummaryExperiments were made to assess the nutritive value of expeller-proeessed mustard cake (MS) for egg-type and meat-type chicks. Eight samples of MS on average contained 37·2% crude protein, 27·5% true protein, 12·6% available carbohydrate and 2·09 % tannins. The average metabolizable energy content (ME) of eight samples of MS for egg-type and meat-type chicks were 2350 and 2300 kcal/kg respectively. MS in the diet replacing groundnut cake (GN) which formed 30–32 % of the control diets was found to have no effect on growth rate of the chicks of either breed although there was thyroid enlargement. MS was also found not to affect the body composition of the chicks.

A study of the relationship between plane of nutrition during lactation and certain production characteristics in autumn-calving suckler cows

1983 ◽  
Vol 37 (3) ◽  
pp. 353-363 ◽  
Author(s):  
S. H. Somerville ◽  
B. G. Lowman ◽  
R. A. Edwards ◽  
G. Jolly
Keyword(s):  
Growth Rate ◽  
Compensatory Growth ◽  
Live Weight ◽  
Beef Cows ◽  
Metabolizable Energy ◽  
Condition Score ◽  
The Mean ◽  
Daily Intakes ◽  
The Relationship ◽  
Production Characteristics

ABSTRACTHereford ♂ × British Friesian ♀ cows that had calved in September/October and were suckling mainly Charolais ♂ × calves were offered individually one of three planes of nutrition based on their estimated maintenance requirement during their first 150 days of lactation.The mean daily intakes of metabolizable energy were 95·8, 71·5 and 52·1 MJ for the high, medium and low planes of nutrition respectively. Data were collected from 122 lactations. The mean 150-day cumulative milk yields of the cows were 1 355, 1 258 and 1 187 kg for the high, medium and low planes of nutrition respectively (P < 0·001). A i-kg increase in calf birth weight was associated with an increase in 150-day cumulative milk yield of 14·7 ± 2·17 kg (P < 0·001). Losses in live weight and condition score were significantly greater for cows given the low plane of nutrition during lactation (P < 0001).Although there was a significant (P < 0·01) positive correlation between the growth rate of the calves and their dams' nutritional level during the winter there was evidence of compensatory growth at grass, since by the time of weaning in August, the plane of nutrition of the dam during the winter had no significant effect on the weight of the calves.The experiment demonstrates that energy-deficient beef cows will attempt to maintain milk production at the expense of body reserves and that when supplementary solid food is made available to the suckled calves, their weaning weights are unaffected by the plane of nutrition of the dam during the winter.

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