EFFECTS ON TURKEY BROILER PERFORMANCE AND CARCASS QUALITY BY SUPERIMPOSING TOENAIL-CLIPPING UPON DEBEAKING AFTER ESTABLISHED DEVELOPMENT

1979 ◽  
Vol 59 (2) ◽  
pp. 327-332 ◽  
Author(s):  
E. T. MORAN Jr.
Keyword(s):  
Body Weight ◽  
Soybean Meal ◽  
Carcass Quality ◽  
Broiler Performance ◽  
Carcass Yield ◽  
Commercial Practice ◽  
Turkey Poults ◽  
Nail Removal

Broiler-type turkey poults were placed sex-separate in floor pens (60 birds/pen; ca. 5.5/m2) of an environment-controlled house. All birds received corn-soybean meal based rations paralleling commercial practice. Treatments were imposed at 5 wk of age and involved either debeaking alone (controls) or its combination with toenail-clipping (6 pens/sex/treatment). Body weight of nail-clipped turkeys was less at 6 and 10 wk than found with controls; however, the converse was observed by slaughter at 14 wk. Conversion of feed consumed during the 6 to 10- and 10 to 14-wk intervals was more efficient with nail-clipped than control birds. Mortality was similar between both groups from starting through to the finishing period whereupon noticeably fewer deaths occurred with nail-clipped as opposed to control turkeys. Dressed carcass yield was greater when nail removal was performed than not. A 40% reduced incidence of utility grades indirectly suggested that this yield advantage was due to less "on the line" trimming during processing. Conformation, fleshing and finish grades were unaltered. Both sexes responded comparably. All advantages arising as a consequence of toenail-clipping could be explained in terms of reduced flock activity.

RESPONSE OF BROILERS TO VARIATIONS IN WATERER, FEEDER, AND FLOOR SPACE UNDER CONTINUOUS AND INTERMITTENT PHOTOPERIODS

1973 ◽  
Vol 53 (2) ◽  
pp. 349-354 ◽  
Author(s):  
F. G. PROUDFOOT
Keyword(s):  
Body Weight ◽  
Carcass Quality ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Floor Space ◽  
Bird Density ◽  
Feeder Spaces ◽  
Space Effects ◽  
Feeder Space

The effects on broiler performance of different floor, waterer, and feeder spaces and light treatments were estimated. Increased bird density resulted in a reduction in body weight, poorer feed conversion, reduced carcass quality and a reduction in monetary returns per bird started. Feeder space effects were inconsistent. Waterer spaces examined had little effect on bird performance. Light treatments studied revealed that cycles of 1 h of light with 3 h of darkness resulted in slightly superior feed conversion compared with cycles of 3 h of light and 1 h of darkness.

scholarly journals Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions

2021 ◽  
Vol 2 ◽  
Author(s):  
Meaghan M. Meyer ◽  
Anna K. Johnson ◽  
Elizabeth A. Bobeck
Keyword(s):  
Gene Expression ◽  
Body Weight ◽  
Soybean Meal ◽  
Environmental Enrichment ◽  
Cost Effective ◽  
Economic Loss ◽  
Breast Muscle ◽  
Poultry Production ◽  
Feed Conversion ◽  
Broiler Performance

Sustainability in poultry production is evident in efforts to reduce inputs and a focus on bird welfare and livability. Dietary protein alternatives to traditional sources such as soybean meal aim to meet or exceed efficiency benchmarks and be cost-effective. Environmental enrichment encouraging activity may reduce the occurrence of the predominant breast muscle myopathy, woody breast (WB); interventions to minimize muscle damage and economic loss have yet to be established. The study objectives were to maintain or improve broiler performance and breast quality through environmental enrichment and partially replacing dietary soybean meal with Spirulina. Twelve hundred Ross 708 broilers were randomly assigned to enrichment (LASER; laser enrichment, or CON; no laser enrichment) and diet (algae; 2.5% Spirulina algae, or control) in a 2 × 2 factorial design for 49 days. The same 70 randomly selected birds were examined for contact dermatitis wk 1–6. Breast width was measured weekly on 200 growing broilers beginning on d22. On d42 and 49 slaughter, WB score was assigned using a tactile 0–3 scale and the right breast filet was weighed (n = 200). RNA isolated from 30 breast muscle samples each at d42 and 49 was analyzed using real-time qPCR. Laser enrichment increased body weight at all timepoints (d49: 0.148 kg, P < 0.001). Feed conversion ratio was improved in LASER-enriched birds by 3 points in the starter period (P = 0.003). Breast width was increased at all timepoints in LASER-enriched birds compared to CON (d49: 0.47 cm, P < 0.001). Algae inclusion increased body weight at d28 (0.059 kg, P = 0.005). At d42, 12% more LASER-enriched WB scores were 0 (normal) compared to CON, and at d49, 15% more enriched scores were 0. At d42, 5% more algae-fed broiler scores were 0 compared to control. LASER-enriched broiler breast tissue showed upregulated expression of myogenin, muscle regulatory factor 4, insulin-like growth factor 1, and myostatin compared to CON (P < 0.01). Both laser enrichment and algae inclusion improved broiler performance without negatively impacting environmental or physiological outcomes. LASER enrichment decreased severity of WB score and positively shifted myogenic gene expression in the breast muscle at slaughter.

scholarly journals Use of Castor Bean Meal, Biodiesel Industry Coproduct, in A Lamb Production System Using Creep-Feeding in Brazil

Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1250
Author(s):  
Marco A. S. Novaes ◽  
Cristina M. Veloso ◽  
Otávio H. G. B. D. Siqueira ◽  
Matheus F. L. Ferreira ◽  
João V. R. Lovatti ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Soybean Meal ◽  
Castor Bean ◽  
Body Weight Gain ◽  
Nutrient Digestibility ◽  
Creep Feeding ◽  
Carcass Yield ◽  
Feeding Method ◽  
Bean Meal

This study aimed to evaluate the replacement of soybean meal by detoxified castor bean meal on the intake and digestibility of nutrients, body weight gain, carcass yield, physiological and urinary parameters, and creep-feeding method effectiveness. For this trial, 43 male lambs were used, Dorper × Santa Inês, with an average initial body weight of 7.95 kg, 15 days old. Lambs were distributed in a randomized block design. Five experimental diets were provided: Without supplementation, with supplementation but without the use of castor bean meal, and with gradual levels of replacement of soybean meal by detoxified castor bean meal (33%, 67%, and 100%). Higher values of DMI and nutrient digestibility (p < 0.05) were observed for animals that received supplements. The milk intake did not differ among the diets. The DMD showed a linear effect, while NDFD had a quadratic effect, depending on castor bean meal inclusion. The carcass yield did not differ between experimental diets. There was no significant effect on the urinary volume and metabolites investigated. In conclusion, the replacement of soybean meal by detoxified castor bean meal does not compromise animals’ development. Besides, the creep-feeding method positively affects lamb development, with higher body weight gain for supplemented animals.

scholarly journals Evaluating Dietary Inclusion of High Oleic Soybean Meal and Oil on Broiler Performance and Lipid Quality

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
J. Slaughter ◽  
T. Peckman ◽  
K. Burdick ◽  
Z. Callahan ◽  
B. Wiegand
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Lipid Oxidation ◽  
Soybean Meal ◽  
Omega 3 ◽  
Broiler Performance ◽  
Carcass Yield ◽  
High Oleic ◽  
Significant Difference

ObjectivesThe objective of this study was to evaluate the effect of dietary inclusion of high oleic soybean meal and oil on broiler performance and lipid quality.Materials and MethodsMale Ross 308 broiler chicks (n = 160) were sorted by weight and randomly assigned to one of two treatments containing 10 replicate pens with 8 broilers each. Treatment groups consisted of a control corn-soy diet that included commodity soybean meal and oil (CON) and a corn-soy diet containing high oleic soybean meal and oil (HO). Broilers received, ad libitum, a two-phase diet consisting of starter (d0–21) containing 5% oil and grower (d21–42) containing 3% oil. Pen weight (PW) and feed intake (FI) were recorded on Days 0, 21, and 42 and used to calculate feed to gain ratio (F:G). Broilers were slaughtered on d42, after which carcasses were weighed and fabricated. Weights of fabricated parts were recorded for carcass yield. Samples of breast and thigh meat were taken for fatty acid profile analysis, which was conducted using a modified version of methods by Folch et al. (1957) and Morrison and Smith (1964). To measure lipid oxidation, boneless, skinless breast halves chosen randomly from each pen were placed on Styrofoam trays and overwrapped with oxygen permeable, polyvinyl chloride and placed in retail storage (4°C) and used for collection of thiobarbituric acid reactive substances (TBARS) on Day 1, 3, and 5 of storage. Data was analyzed using PROC GLM procedure in SAS, with level of significance set at P < 0.05.ResultsCON pens had a greater (P < 0.002) change in weight (23480.61 g. vs. 21829.39 g.), however, the CON treatment had an increase in FI (P < 0.0003) compared to the HO treatment (29841.74 g. vs. 27405.68 g). Thus, there was no significant difference (P = 0.22) in F:G between treatments. While there was no difference (P = 0.39; P = 0.71) in percent carcass yield or breast yield, the CON treatment had a higher (P = 0.01) percent thigh yield compared to the HO treatment (16.36% vs. 15.86%). Results of lipid oxidation showed there was an effect of day (P < 0.0001), but no treatment or interaction effects were observed. Diet changed (P < 0.0001) the proportion of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and polyunsaturated fatty acids (PUFA) in breast and thigh meat. HO treatment increased the proportion of MUFA and decreased the proportion of PUFA and SFA in both breast and thigh meat. Both breast and thigh samples from the HO treatment had increased (P < 0.0001) proportions of oleic acid (C18:1) and decreased proportions of linoleic acid (C18:2) compared to the control. Inclusion of HO soybean meal and oil in broiler diets resulted in increased uptake of MUFA (C18:1) and decreased PUFA (C18:2) in both breast and thigh meat, while having no impact on broiler feed efficiency.ConclusionPull through effect of HO acid seen in fatty acid analysis of broiler meat shows the ability to serve as a mechanism to increase oleic acid inclusion in human diets. Oleic acid needs are potentially related to omega-3 fatty acid needs which are shown to have health benefits related to cardiac health in humans among other things. Studies have shown that increases in oleic acid in diets can lead to an increase in omega-3 fatty acids.

scholarly journals The Effects of Feed Color on Broiler Performance between Day 1 and 21

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Treatment Effects ◽  
Body Weight Gain ◽  
Experimental Period ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Average Body ◽  
Average Body Weight

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.

scholarly journals Influence of gender on carcass yield of twin lambs Blackbelly x Pelibuey at 56 days of age

2016 ◽  
Vol 68 (4) ◽  
pp. 1077-1084
Author(s):  
I. del C. García-Osorio ◽  
J. Oliva-Hernández ◽  
M.M. Osorio-Arce ◽  
G. Torres-Hernández ◽  
J. A. Hinojosa-Cuéllar ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Yield ◽  
Daily Weight Gain ◽  
Longissimus Dorsi ◽  
Average Daily Weight Gain ◽  
Carcass Yield ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle ◽  
Males And Females

ABSTRACT The aim of this study was to determine the influence of gender on pre-weaning growth, yield and weight of primal cuts of the carcass of Blackbelly x Pelibuey lambs. 16 twin lambs were used. The lamb gender was the fixed factor. The variables evaluated were: body weight at birth and at weaning, average daily weight gain, weight and yield of carcass and primal cuts: neck, arm, thorax, abdomen and leg. Gender did not affect (P>0.05) body weight at birth. However, the pre-weaning average daily weight gain and body weight at weaning were affected (P<0.05) by the gender. Hot carcass yield and weight and primal cuts were not affected (P>0.05) by the gender of the lamb. Nevertheless, the area of the Longissimus dorsi muscle and cavity fat were different between males and females (P<0.05) 11.5±0.73cm2 and 198±0.05 g vs 9.3±0.73cm2 and 282±0.05g, respectively. In conclusion, in twin lambs Blackbelly x Pelibuey males had greater average daily weight gain and body weight at weaning than females. Carcass yield and weight and primal cuts were not affected by the gender of the lamb. However, males had greater area of the L. dorsi muscle than females and these in turn had a greater amount of cavity fat than males.

scholarly journals Quantitative characteristics of the carcasses of Moxotó and Canindé goats fed diets with two different energy levels

2010 ◽  
Vol 39 (7) ◽  
pp. 1565-1570 ◽  
Author(s):  
Ana Cristina Chacon Lisboa ◽  
Dermeval Araújo Furtado ◽  
Ariosvaldo Nunes de Medeiros ◽  
Roberto Germano Costa ◽  
Rita de Cássia do Egypto Queiroga ◽  
...  
Keyword(s):  
Body Weight ◽  
Energy Level ◽  
Energy Levels ◽  
Experimental Period ◽  
Carcass Yield ◽  
Final Weight ◽  
Quantitative Characteristics ◽  
Energetic Level ◽  
Average Body ◽  
Average Body Weight

The objective of this work was to evaluate the quantitative characteristics of carcasses of Moxotó and Canindé goats finished in feedlots and fed diets of two levels of energy. It was used 40 castrated young goats, 20 from Moxotó breed and 20 from Canindé breed, each one with an average body weight of 15.2 kg. The animals were fed with diets containing 2.20 and 2.71 (Mcal/kg DM). The experimental period lasted 86 days. There was no difference among the barometric measures of Moxotó and Canindé kids. Canindé goats showed higher final weight, higher weight after fasting and higher hot and cold carcass weights when compared to the Moxotó animals. Animals that consumed diets with higher energy level had higher final weight and conformation as well as higher carcass yield. Considering the percentage values of the commercial meat cuts, no difference among treatments was observed. The diet was the factor that most influenced the non-constituent components of the carcass of Moxotó and Canindé goats. In general, animals belonging to the Canindé breed presented higher quantitative characteristics than the Moxotó breed. Supply of diets with higher energetic level (2.71 Mcal/kg DM) for goats from Moxotó and Canindé breeds, in feedlots, favors the production of carcass with higher yields and heavier commercial meat cuts.

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.

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