PERFORMANCE OF HEAVY-TYPE LAYERS ON A LOW ENERGY RATION

1963 ◽  
Vol 43 (2) ◽  
pp. 290-293 ◽  
Author(s):  
J. R. Aitken ◽  
E. S. Merritt ◽  
H. E. W. Meyer ◽  
L. Griesbach
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Energy Content ◽  
Control Diet ◽  
Low Energy ◽  
Control Strain ◽  
Medium Energy ◽  
Final Body Weight ◽  
Oat Hulls ◽  
Meat Type

Three replicate trials were conducted to test the possibility that high mortality of non-specific origin being encountered in a genetic control strain of meat-type laying hens might be due to excessive energy intake. In each trial, the medium energy laying ration on which this strain of birds has been maintained for a number of years was compared with the same ration diluted with 20 per cent pulverized oat hulls, for a period in excess of 330 days.Mortality was not influenced by the energy content of the ration, nor was rate of egg production. The low energy ration reduced final body weight by only 0.1 to 0.2 pounds, suggesting that the birds on the control diet were not unduly fat. Comparison of these results with others reported in the literature leads to the speculation that mortality due to obesity may be a problem only in heavier and faster-growing strains than the strain used in this study.

scholarly journals The effects of limestone sources as calcium source on the performance and eggshell quality of laying chickens

2020 ◽  
Vol 36 (2) ◽  
pp. 256-263
Author(s):  
M. A. Tion ◽  
P. C. Njoku
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Control Diet ◽  
Final Body Weight ◽  
Mean Values ◽  
Eggshell Quality ◽  
Randomized Design ◽  
Calcium Source ◽  
Cement Factories

Two hundred and twenty four pullets of shaver Star Cross 579 x Hubbard Golden Comet, that were 30 weeks of age and laying at 50% hen day production, were utilized in a completely randomized design to assess the suitability of limestone sources (procured from different cement factories) for laying hen performance and eggshell quality. Oystershell and bone meal were used in the control diet. Results showed that there were no significant (P>0.05) differences between the treatment mean values for initial body weight of chicken, egg production. Feed per dozen eggs. Eggshell thickness and eggshell percentage. However. Feed intake. Final body weight and egg weight varied significantly (P<0.05) among diets. Generally, diets that produced numerically higher rate of egg production resulted in significantly (P<0.05) smaller egg weights.

Effect of Yeast Type and Dose on Growth Performance and Nutrient Digestibility of Growing Rabbits Fed Maize or Barley

2021 ◽  
Author(s):  
Amr M.A. Elmasry ◽  
Luis A. Miranda ◽  
Germán Mendoza ◽  
Fernando X. Plata
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Body Weight ◽  
Growth Performance ◽  
Control Diet ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Positive Effects ◽  
Yeast Concentration

Background: The effects of the probiotics vary with the doses and strains used for this reason, a study was conducted over 35 days to determine the effect of live yeast supplementation in the diet of growing rabbits on growth performance and apparent nutrient digestibility.Methods: A total of 60 New Zealand and California rabbits (5 weeks old, average body weight 0.881±0.015 kg) were housed in 30 cages. They were fed with a control diet based on alfalfa and maize or barley grains and supplemented with Procreatin®7 (Saccharomyces cerevisiae CNCM I 1077) or Biosaf® SC47 (Saccharomyces cerevisiae NCYC Sc47) at three doses, namely 0, 6.4, or 12.8 ×109 CFU per kg basal diet.Result: The higher yeast concentration had a positive effect (P less than 0.01) on final body weight (BW), average daily gain (ADG) and carcass weight (CW). However, there were no significant differences in dry matter intake. As a result of this, the feed conversion ratio (FCR) decreased (P less than 0.01). Significant increases (P less than 0.05) in nutrient digestibility (DM, OM, NDF and ADF) were observed with both grains. The use of yeast in maize and barley-based diets of rabbits has positive effects on growth performance and nutrient digestibility.

Net energy efficiencies of Holstein, Jersey and Holstein-Jersey F1-crosses

2001 ◽  
Vol 72 (2) ◽  
pp. 335-342 ◽  
Author(s):  
R. Schwager-Suter ◽  
C. Stricker ◽  
D. Erdin ◽  
N. Künzi
Keyword(s):  
Body Weight ◽  
Body Condition ◽  
Fixed Effects ◽  
Energy Content ◽  
High Energy ◽  
Repeated Measurements ◽  
Low Energy ◽  
Body Tissue ◽  
Net Energy ◽  
Tissue Change

Abstract Net energy efficiencies were calculated from data of an experimental herd with respect to type of cow, lactation number, stage of lactation and diet. The trial consisted of 71 Holstein-Friesians, 71 Jerseys and 71 Holstein-Jersey F1-crosses in 1st, 2nd and > 2nd lactation. Data were collected during 210 days of lactation, from calving to week 30 and included total dry matter intake, energy content of foods, milk yield, milk solids, body weight, body condition scores and several body measurements. The cows were divided into four feeding groups : high and low energy content of roughage as well as high and low proportion of concentrates. Net energy efficiency was calculated as the ratio of milk energy to total net energy intake after subtracting energy utilized for maintenance and body tissue change. Body tissue change was calculated either via body-weight changes or body condition-score changes. Due to the distribution of the efficiencies being skewed, efficiencies were transformed applying a Box-Cox transformation. Transformed net energy efficiencies were analysed using a repeated measurements design considering the sequential nature of the observations. Mixed models with a compound symmetry structure for the variance components were applied. Final models contained the fixed effects of type, lactation number, feeding group and the covariates week of lactation and its square. Holstein-Jersey crosses were more efficient than purebreds, second lactation cows were least efficient, cows given low energy roughage and a lower proportion of concentrates were more efficient than cows on the other diets. Least efficient were the cows belonging to the high energy roughage and higher proportion of concentrates group. The coefficients of determination of the final models were between 0·357 and 0·492.

Supplementation of a low protein diet in an attempt to optimize egg mass output

1991 ◽  
Vol 71 (1) ◽  
pp. 211-220 ◽  
Author(s):  
John D. Summers ◽  
J. L. Atkinson ◽  
D. Spratt
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Soybean Meal ◽  
Egg Production ◽  
Corn Oil ◽  
Control Diet ◽  
Essential Amino Acids ◽  
Egg Mass ◽  
Minimum Requirement ◽  
Low Protein

Pullets were brought into production on a low-protein corn, soybean meal diet to which various nutrients including essential amino acids, choline, corn oil and feathermeal were supplemented. Production commenced between 18 and 20 wk of age and up to at least 60% production, hens fed the low protein diets (10% CP) produced at least as many eggs and as great an egg mass as these given a 17% protein corn, soybean meal control diet. Pullets fed the corn, soybean meal test diets, peaked at around 80% as compared to slightly over 90% for the control. Egg production immediately fell for birds fed the test diets to around 70% for most of the test treatments. Body weight remained constant or fell after peak production for birds fed the test diets as compared to a normal increase for birds on the control diet. Egg size increased for the test diets at a rate which was comparable to that of the control birds. In a second experiment, with older hens, supplementation of the 10% protein test diet with methionine, lysine, arginine and tryptophan, resulted in intakes of these amino acids which met NRC minimum requirement levels. However, egg mass output was reduced approximately 11% compared to the 17% protein control diet. While intakes of several essential amino acids fell below requirement levels, the degree that valine was calculated to be deficient in both experiments corresponded closely with the reduction in egg mass output of hens fed the test as compared to the control diet. Key words: Lysine, methionine, egg weight, body weight, hens.

scholarly journals SAPU-SAPU FISH (Hyposarcus pardalis) AS A SINGLE PROTEIN SOURCE FOR LAYING MOJOSARI DUCKS

2016 ◽  
Vol 41 (3) ◽  
pp. 117-124 ◽  
Author(s):  
B. Indarsih ◽  
A. Asnawi ◽  
D. K. Purnamasari
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Egg Production ◽  
Egg Quality ◽  
Production Performance ◽  
Protein Source ◽  
Egg Mass ◽  
Final Body Weight ◽  
Egg Number ◽  
Single Protein

The present study was conducted to evaluate the optimum level of dietary inclusion and the form of feeding sapu-sapu fish (SSF) as a single protein source for feed components of small holder Mojosari duck farming. A total of 180 twenty four wk-old laying ducks were fed with two forms (sun-dried and ground-fresh) and three levels of SSF (10, 20 and 30%) from 24 to 32 wk of age. Experimental diets were formulated containing 105.1; 141.5 and 177.9 g/kg crude protein and 3078; 3065 and 3052 kcal metabolizable energy (ME) /kg diet. Production performance and egg quality were measured. The form of SSF had a significant effect (P<0.0001) on feed intake, egg production, feed conversion, egg mass and egg number except final body weight. No significant effects (P>0.05) were found on all of the performance parameters measured due to feeding levels of SSF except feed intake and final body weight. The interaction of form and feeding level was significant (P<0.05) on egg and body weights. Low performance and egg quality were observed in the birds fed a diet containing the dried SSF. It can be suggested that local ducks required 20% SSF as a single protein source for maximum egg production (41.2%) and total egg number per wk (3.1 eggs/bird/wk) during 8 wk of rearing period. Egg quality can be improved by feeding the fresh SSF. However, due to be sufficiently better processing technique, the dried SSF would be potential to replace the common fish for laying ducks.

scholarly journals Comparative evaluation of effects of different sources of groundnut meals on digestibility, growth performance and economics of production of growing rabbits

2021 ◽  
Vol 41 (1) ◽  
pp. 272-283
Author(s):  
K. T. Orayaga ◽  
P. M. Goholshak
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Control Diet ◽  
Seed Kernel ◽  
Apparent Digestibility ◽  
Final Body Weight ◽  
Treatment Groups ◽  
Groundnut Cake

Three groundnut meals namely: groundnut cake (GNC), locally processed groundnut cake (kulikuli) and toasted groundnut seed(kernel) meal (TGSM) were incorporated in rabbit diets at two levels to generate six diets: 18% GNC, 22% GNC, 18% Kulikuli, 22% Kulikuli, 18% TGSM and 22% TGSM respectively, and 18% GNC also served as the control diet. Twenty four (24) six weeks-old growing rabbits of mixed breeds and sexes with mean initial weight of 568.75±l2.85g were randomly allocated to the six dietary treatment groups, such that each had four rabbits and each rabbit formed a replicate in a completely randomized design laid out in a 2X3 factorial arrangement and fed ad libitum, for 70 days. The main effects showed that while the treatment groups fed TGSM were significantly depressed (p<0.05). rabbits fed GNC and kulikuli were not significantly different (p>0.05) for average daily feed intake, daily body weight gain and final body weight. Feed conversion ratio (FCR) was not significantly (p >0.05) affected among treatment groups. Rabbits fed TGSM had significantly (p<0.05) better apparent digestibility coefficient (78.04%) than those on kulikuli (75.81%6) and the group on kulikuli were better than animals fed GNC (72.09%) for fat digestibility. Fibre digestibility was also significantly different (p <0.05), with rabbits fed kulikuli having the poorest fibre digestion (15.63 %). Crude protein, dry matter and NFE apparent digestibility coefficients were not significantly (p >0.05) affected. Among all the parameters measured, only fat and fibre digestibility coefficients had significant (p <0.05) interactions and NFE digestibility was significantly affected (p <0.05) by level of inclusion, with groups fed 22% digesting it better. Feed cost kg gain did not differ significantly (p >0.05) among the treatment groups. Growth was still on the rise and there was a significantly (P<0.01) strong relationship (correlation and regression) between feed intake and weight gain for all the treatment groups. was concluded that both kulikuli and TGSM are potential feed resources for rabbits, more available to house hold farmers, equally economical as GNC and better still if groundnut farmers and or processors of kulikuli raise rabbits, though TGSM had less value for growth rate compared to GNC and Kulikuli at these levels of inclusion

scholarly journals Effects of level of dietary copper sulphate and period of feeding on the laying, domestic fowl, with special reference to tissue mineral content

1980 ◽  
Vol 43 (1) ◽  
pp. 205-215 ◽  
Author(s):  
Mary H. Stevenson ◽  
N. Jackson
Keyword(s):  
Body Weight ◽  
Copper Sulphate ◽  
Egg Production ◽  
Control Diet ◽  
Kidney Tissue ◽  
Body Weight Loss ◽  
Breast Muscle ◽  
Cu Content ◽  
Unit Body Weight ◽  
Blood Haemoglobin

1. A cereal-based diet containing 7.6 mg copper/kg was fed ad lib. to laying hens for up to 48 d. Four other groups were given the control diet to which was added hydrated copper sulphate to provide 250, 500, 1000 and 2000 mg added Cu/kg.2. Hens were killed on day o and after 3, 6, 12, 24 and 48 d. Records were kept of body-weight, food consumption, egg production and egg weight.3. After slaughter blood haemoglobin, packed cell volume, serum Cu and aspartate aminotransfferase- (AAT; EC 2.6. I. I) were measured. The liver, kidneys, a sample of breast muscle, oviduct, ovary and gizzard were weighed. Gizzard, spleen. liver and kidney tissue were examined histologically.4. The Cu, zinc and iron concentrations of liver, kidneys and breast muscle and the manganese concentrations of liver and kidneys were determined.5. Body-weight loss occurred at 500–2000mg added Cu/kg diet. Egg production was depressed by level of added Cu and period of time on the Cu-containing diets.6. Mean liver, kidney, oviduct and ovarian weights per unit body-weight were depressed by Cu in the diet and the effect increased with period of time on the diets. Mean gizzard weight per unit body-weight was increased by dietary added Cu and by time.7. Cu concentrations in the liver were increased by dietary level of added Cu and period of timeon the diet. Zn concentration in liver increased at 1000 and 2000 mg added Cu/kg diet and liver Fe concentration was increased at these levels. Histological examination of the gizzard indicated that the Cu content of the gizzard lining increased with dietary added Cu.

scholarly journals Effects of withdrawal of copper sulphate from the diet of the mature domestic fowl with special reference to production and tissue mineral content

1980 ◽  
Vol 43 (3) ◽  
pp. 551-559 ◽  
Author(s):  
Mary H Stevenson ◽  
N. Jackson
Keyword(s):  
Body Weight ◽  
Bile Duct ◽  
Food Intake ◽  
Adverse Effects ◽  
Domestic Fowl ◽  
Egg Production ◽  
Mineral Content ◽  
Control Diet ◽  
Iron Concentration ◽  
Blood Haemoglobin

1. Cereal-based diets containing 0, 500, 1000 or 2000 mg added copper/kg were offered ad lib. to laying hens for 8 weeks. All the hens were subsequently offered the control diet (no added Cu, 7.5 mg Cu/kg).2. Hens from each treatment were killed at 0, 2, 4, 6 and 8 weeks after removal of the Cu-supplemented diets. Records were kept of body-weight, food consumption and egg production.3. After slaughter, blood haemoglobin, packed cell volume, serum Cu and aspartate aminotransferase (AAT; EC 2.6.1.1) were assayed. The liver, kidneys, oviduct, ovary, gizzard, caeca and bile duct were weighed.4. Mean Cu, zinc and iron concentration of liver, kidneys and caecal contents were determined.5. The adverse effects of Cu on body-weight, food intake, egg production and liver, oviduct, ovary, gizzard and bile weights were rapidly reversed by removal of added Cu from the diets.6. Greatly enhanced liver Cu concentration resulted from feeding the high-Cu diets but this effect was rapidly reversed on removal of added Cu from the diets. Liver Fe concentration showed a less marked but similar effect.7. The Cu concentration of caecal contents was increased by Cu supplementation and rapidly reduced after withdrawal of the Cu-containing diets.

Influence of date of egg production and diet on pheasant chick development

1973 ◽  
Vol 51 (11) ◽  
pp. 1149-1154
Author(s):  
V. G. Thomas ◽  
E. D. Bailey
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Control Diet ◽  
Energy Levels ◽  
Metabolizable Energy ◽  
Tarsal Bone ◽  
Experimental Diet ◽  
Primary Feather ◽  
Growth Increase ◽  
Chick Development

Ring-necked pheasant (Phasianus cokhicus) chicks were hatched at weekly intervals for 14 weeks from eggs laid by hens fed two diets of different protein and energy levels. Chicks from each hatch were subjected to two different nutritional planes by feeding them a control diet yielding 2.91 kcal of metabolizable energy per gram and 23.7% protein, and an experimental diet yielding 1.88 kcal of metabolizable energy per gram and 14.3% protein. Weight of the chicks at hatching, and three indices of growth, increase in body weight, length of the tarsal bone, and length of the seventh primary feather, were taken during the first 3 weeks of life. Weights of day-old chicks and their rates of development were unrelated to the chronology of egg production, the sex of chicks, and the diets fed to the parent hen. Differences between rates of development of the chicks were attributed to differences between the amount of protein and energy metabolized from their diets.

scholarly journals Effect of high and low energy based concentrate diet supplementation on nutrient intake and body weight changes of buffalo bull calves at Subornochar Upozila of Noakhali district in Bangladesh

2021 ◽  
Vol 50 (1) ◽  
pp. 50-56
Author(s):  
MA Siddiki ◽  
MR Amin ◽  
AKMA Kabir ◽  
MO Faruque ◽  
ZH Khandaker
Keyword(s):  
Body Weight ◽  
Nutrient Intake ◽  
Crude Protein ◽  
High Energy ◽  
Low Energy ◽  
Weight Changes ◽  
Body Weight Changes ◽  
Final Body Weight ◽  
Concentrate Supplementation ◽  
Bull Calves

This study was designed to investigate the effects of supplementation of high and low energy based concentrate diets (13.77 Vs 12.14 MJ/kg DM metabolizable energy) on the nutrient intake and body weight changes of indigenous growing buffalo bull calves in Bangladesh. The crude protein contents of both the supplemented diets were similar (about 12.50% on DM basis). In this study, a total of fifteen indigenous growing buffalo bull calves (av. Live weight 85.10±0.874 kg) were selected from different villages. It was found that the total dry matter intake was the highest (28.22±0.015 g/kg W0.75/d) in group supplemented with high energy concentrate diet along with farmer’s practices (D1), thereafter, in group supplemented with low energy concentrate diet along with farmer’s practices (D2) (27.79±0.015 g/kg W0.75/d) and the lowest (26.39±0.016 g/kg W0.75/d) in control group (D0) in which the animals were fed only farmers practices diet. Similarly, the crude protein intake was the highest in D1 group (2.86 ±0.029 g/kg W0.75/d), followed by D2 group (2.83±0.010 g/kg W0.75/d) and the lowest in farmer’s practices diet, D0 (2.08b±0.021 g/kg W0.75/d).  However, the final body weight of buffalo bull calves was higher in both groups supplemented with concentrate diets (D1 and D2) compared with control (D0) and differed significantly (p<0.01) while there were no significant differences (p>0.05) found between D1 and D2 where high energy concentrate supplementation group buffalo bull claves, D1 tended to be higher than low energy concentrate supplementation group buffalo bull claves, D2. The highest final (254.6 kg) body weight was recorded in high energy concentrate supplemented diets and the lowest (144.0 kg) was found in control. Additionally, the average final body weight was increased by 153.40 kg (151.58%), 150.40 kg (152.22%) and 45.60 kg (46.34%) in D1, D2 and D0 group buffalo bull calves, respectively. On the other hand, the average final body weight of D1 and D2 was increased by 110.60 kg (76.80%) and 105.20 kg (73.05%), respectively, compared with D0. In addition, the highest (6.46) feed conversion efficiency (FCE) was recorded in D1 followed by D2 (6.64) and the lowest (12.17) was found in D0. The trends of cost benefit ratio was the same like other considering factors, the highest (1:3.60) found in D1 followed by D2 (1:3.51) and the lowest (1:1.97) in D0. Finally, considering all the parameters, it was clearly indicated that supplementation of concentrate diet along with farmers practice is essential for fast growing, higher body weight gain and more benefits by rearing buffalo bull calves at Subornochar Upozila of Noakhali district in Bangladesh. Bang. J. Anim. Sci. 2021. 50 (1):50-56

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