Association of residual feed intake with growth performance, carcass traits, meat quality, and blood variables in native chickens

Abstract Improving feed efficiency is a primary goal in poultry breeding strategies. Residual feed intake (RFI) in chickens typically calculated during the growing period is a measure of feed efficiency that is independent of the level of production. The objective of this study was to evaluate phenotypic correlations of growth performance, carcass traits, meat quality, and blood variables with RFI in growing native chickens. A total of 1,008 chickens were selected for the experiment to derive RFI. After the RFI measurement period of 42 d, 25 chickens with low RFI values, 25 chickens with medium RFI values, and 25 chickens with high RFI values were selected. The RFI was significantly positively correlated with feed conversion ratio and average daily feed intake, while it was not significantly correlated with initial body weight (BW), final BW, average daily body weight gain, and metabolic BW0.75. The abdominal fat weight and yield of high RFI group were significantly greater than those of medium and low RFI groups, and the abdominal fat yield was significantly positively correlated with RFI. Moreover, the plasma insulin-like growth factor 1 (IGF-1) content of low RFI group was significantly greater than those of high and medium RFI groups. The plasma concentrations of adrenocorticotropic hormone, triiodothyronine (T3), and cortisol of high RFI birds were significantly greater than that of low RFI birds. RFI was significantly positively correlated with plasma concentrations of T3 and cortisol, while it was significantly negatively correlated with plasma concentration of IGF-1. In addition, the serum levels of glucose and triglyceride of high RFI birds were significantly lower than that of low RFI birds. The serum low-density lipoprotein cholesterol (LDL-C) content of high RFI group was significantly greater than that of medium and low RFI groups, and it was significantly positively correlated with RFI. Our data suggested that selection of chickens with low RFI values may be beneficial to reduce fat deposition in native chickens without affecting the meat quality. Circulating IGF-1, T3, cortisol, and LDL-C concentrations can be used as indirect selection indicators of feed efficiency in native chickens. The effect of IGF-1, T3, cortisol, and LDL-C on feed efficiency of native chickens should be carefully examined and validated in future breeding programs.

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A Multicarbohydrase and Phytase Complex Is Able to Compensate a Nutrient-Deficiency in Growing-Finishing Pigs

Animals ◽

10.3390/ani11041129 ◽

2021 ◽

Vol 11 (4) ◽

pp. 1129

Author(s):

Ya-Kuan Huang ◽

Ling Zhao ◽

Hua Sun ◽

Xue-Mei Xu ◽

Jlali Maamer ◽

...

Keyword(s):

Body Weight ◽

Weight Gain ◽

Growth Performance ◽

Meat Quality ◽

Soybean Meal ◽

Feed Intake ◽

Crude Protein ◽

Body Weight Gain ◽

Carcass Traits ◽

Finishing Pigs

The objective of this study was to evaluate the efficacy of supplementing a corn-wheat-soybean meal-based diet with a multicarbohydrase and phytase complex (MCPC) on growth performance, apparent total tract digestibility (ATTD) of nutrients, carcass traits, and meat quality in growing-finishing pigs. A total of 300 pigs (Duroc × Large White × Landrace; body weight = 25.3 ± 0.7 kg) were randomly allotted to three groups with 10 replicates of 10 pigs each. Pigs from three groups were fed positive control (PC) or negative control (NC), without or with MCPC diets, respectively. The MCPC supplied at least 1800, 1244, 6600, and 1000 units of xylanase, β-glucanase, α-arabinofuranosidase, and phytase per kilogram of diet, respectively. The NC diet was the PC diet but reduced in net energy (NE), digestible amino acids (dig. AA), digestible P (dig. P), and Ca by 74 kcal/kg, 7.0%, 0.134, and 0.119 percentage points, respectively. The diets were fed in 4 growth phases based on body weight (BW): phase 1: 25–50 kg, phase 2: 50–75 kg, phase 3: 75–100 kg, and phase 4: 100–135 kg. Compared to the PC, the NC diet decreased (p < 0.05) body weight gain, feed intake, and(or) feed to gain ratio during the growing/finishing phases 1, 2, 3, and 4. It also reduced (p < 0.05) the ATTD of crude protein, crude fat, P, and Ca of pigs. MCPC supplementation improved (p < 0.05) the body weight gain, feed intake, and(or) feed to gain ratio in phases 2, 3, and 4 and the ATTD of crude protein, crude fat, ash, P, and Ca for the NC diet. Additionally, dietary treatment had no effects on carcass traits and meat quality with the exception that the loin eye area in the NC plus MCPC diet was higher (p < 0.05) than the NC diet. In conclusion, the addition of MCPC to a corn-soybean meal-wheat-based diet reduced in energy and nutrients improved the growth performance and nutrient digestibility but had little effect on carcass traits and meat quality in growing-finishing pigs.

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PSXIV-17 Effects of corn bran plus solubles and corn oil on growth performance and carcass traits of finishing bulls

Journal of Animal Science ◽

10.1093/jas/skz258.864 ◽

2019 ◽

Vol 97 (Supplement_3) ◽

pp. 436-437

Author(s):

Arquimedes Lima Junior ◽

Murillo A Meschiatti ◽

Vinicius N Gouvêa ◽

Victor Dantas ◽

Daniel Silva Antonelo ◽

...

Keyword(s):

Body Weight ◽

Growth Performance ◽

Feed Efficiency ◽

Dry Matter ◽

Corn Oil ◽

Average Daily Gain ◽

Carcass Traits ◽

Dry Matter Intake ◽

Final Body Weight ◽

Finishing Diets

Abstract The objective of this study was to evaluate the growth performance and carcass traits of finishing bulls fed diets containing, on dietary dry matter basis, different levels of corn wet distillers bran plus solubles (WDBS; 0, 15, 30 or 45%) added with or without corn oil (CO; 0 and 3%). A total of 205 Nellore bulls (390 ± 25 kg initial BW) were blocked by initial body weight, distributed in 40 pens and pens within weight block were randomly assigned to treatments in a 2 × 4 factorial arrangement. Diets were isonitrogenous and contained 8.5% sugarcane bagasse and 91.5% concentrate (ground corn, soybean meal, pelleted citrus pulp, urea, mineral). The WDBS (FlexyDDG®) and the corn oil were from SJC Bioenergia (Quirinópolis, Goiás, Brazil). Data were analyzed using the PROC MIXED procedure of SAS. An interaction between CO × WDBS levels was observed for dry matter intake (DMI; P = 0.032). In diets without CO, increasing levels of WDBS linearly (P = 0.004) reduced the DMI, but in diets containing 3% CO, increasing levels of WDBS quadraticaly affected the DMI (P = 0.002). No effects of CO, WDBSF levels or CO × WDBS levels were observed for final body weight, average daily gain, hot carcass weight and dressing percentage. Feed efficiency tended (P = 0.07) to be greater for bulls fed diets containing CO (0.154 vs. 0.144). Increasing levels of WDBS tended (P = 0.09) to increase the feed efficiency. In summary, increasing levels of WDBS in finishing diets linearly (in diets without CO) or quadratically (in diets with CO) reduces the dry matter intake. Adding CO and WDBS tend to increase feed efficiency.

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Effect of density and flock size on growth performance of native chicken

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v10i1.12040 ◽

2012 ◽

Vol 10 (1) ◽

pp. 55-59

Author(s):

M I Ali ◽

SA Azmal ◽

A Ali ◽

M O Faruque

Keyword(s):

Body Weight ◽

Weight Gain ◽

Growth Performance ◽

Feed Intake ◽

Body Weight Gain ◽

Density Level ◽

Flock Size ◽

Feed Conversion ◽

Native Chicken ◽

Native Chickens

A total of 270 native chickens of two months of age were reared up to their six months of age under three densities D1, D2 and D3 (0.186, 0.279 and 0.372 m2/bird) and three flock sizes F1, F2 and F3 (20, 30 and 40 birds/flock) to find out the effect of density (D) and flock size (F) on the growth performance of native chicken under intensive system of management. Body weight gain and feed intake were higher (5.62 & 5.39 and 50.17 & 50.42) and feed conversion ratio and mortality were the lower (9.48 & 10.02) in D2 unit and (12.01 & 13.05) in F2 unit. On the other hand, body weight gain was the lowest (4.81) in D3 unit. Feed intake was the lowest (49.25) in D1 unit with the highest (11.70) FCR value. Body weight gain was found to be the lowest (4.81) in F3 unit but its FCR and mortality rate were the highest (11.25 and 17.71). Feed intake was observed to be the lowest (49.17) in the F1 unit. Considering the growth performance of native chickens under different densities and flock sizes, it could be concluded that flock size F2 (30 birds/flock) performed better at the density level D2 (0.279 m2/bird) than other densities and other flock sizes. DOI: http://dx.doi.org/10.3329/jbau.v10i1.12040 J. Bangladesh Agril. Univ. 10(1): 5559, 2012

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Influence of Crossbreeding of Ghezel Ram With Grey Shirazi Ewe on Growth Performance, Feed Efficiency and Carcass Traits of Fattening Lambs

10.21203/rs.3.rs-642724/v1 ◽

2021 ◽

Author(s):

Abdolhamid Karimi ◽

Mohammad Javad Abarghuei ◽

Alidad Boostani

Keyword(s):

Body Weight ◽

Growth Performance ◽

Feed Efficiency ◽

Average Daily Gain ◽

Carcass Traits ◽

Live Weight ◽

Carcass Weight ◽

Feed Conversion ◽

Final Body Weight ◽

Group 12

Abstract In this investigation, performance, feed efficiency and carcass traits of 48 weaned crossbred Grey Shirazi × Ghezel and purbred Grey Shirazi fattening lambs (mean live weight, 28.5 ± 0.5 kg and age, 115 ± 5 days) were evaluated. Lambs were divided into 4 groups contain the GM group (12 purebred male lambs of Grey Shirazi ewe × Grey Shirazi ram), the GF group (12 purebred female lambs of Grey Shirazi ewe × Grey Shirazi ram), the CM group (12 crossbred male lambs of Grey Shirazi ewe × Ghezel ram) and the CF group (12 crossbred female lambs of Grey Shirazi ewe × Ghezel ram). The dry matter intakes (DMI), average daily gain (ADG) and carcass traits in the lambs were determined. The DMI was greater in CF lambs compared to GF lambs (P < 0.001). Feed conversion ratio (FCR) was higher in male lambs comparing to female lambs (P = 0.001). The final body weight, ADG, live weight at the slaughtering and hot carcass weight (HCW) were lower in GF lambs compared to another lambs (P < 0.001, P = 0.003). Cold carcass weight (CCW) in CM lambs was higher than in other groups. The Longissimus dorsi (LD) area was higher in crossbreed male lambs (P = 0.001). Crossbreeding improved grow performance (final body weight and ADG) in male and female lambs. Carcass trait was improved by crossbreeding especially in male lambs. Sex effect on growth performance and carcass traits was noticeable and male lambs had superior growth.

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Effect of strain, sex and slaughter weight on growth performance, carcass yield and quality of broiler meat

Open Agriculture ◽

10.1515/opag-2020-0056 ◽

2020 ◽

Vol 5 (1) ◽

pp. 607-616

Author(s):

Olusegun O. Ikusika ◽

Andrew B. Falowo ◽

Conference T. Mpendulo ◽

Titus J. Zindove ◽

Anthony I. Okoh

Keyword(s):

Body Weight ◽

Growth Performance ◽

Meat Quality ◽

Feed Intake ◽

Broiler Chicken ◽

Broiler Meat ◽

Final Body Weight ◽

Carcass Yield ◽

Slaughter Weight ◽

Weight Effect

AbstractThis study examined strain, sex and slaughter weight effect on performance, meat quality and yield of broiler chicken. One hundred and fifty-day-old chicks (broilers) were distributed randomly in a 3 × 2 × 4 factorial experiment, with 50 birds per strain (Ross, Aboaca and Anak) and 25 birds per sex. After trial, 32 birds per strain and 16 per sex were slaughtered at 4 different body weights (1,000, 1,500, 2,000, and 2,500 g) to determine carcass yield and meat quality. The results revealed significant strain and sex effect (P < 0.05) on growth performance of the broiler chicken. Ross strain had the highest feed intake (4883.25 g) and final body weight (2440.25 g) compared to Aboaca and Anak strains. Female broiler having heavier body weight (2431.66 g) and feed intake (4864.83 g) than the males for all strains. Aboaca birds had the highest carcass yields for all slaughter weight than Anak and Ross. The slaughter weight, irrespective sex and strains significantly influenced the carcass yield (P < 0.001) with birds slaughtered at 2,500 g having (P < 0.001) highest values compared to other slaughtered weights. As slaughter weight increases, cooking loss and thermal shortening decreases while water holding capacity and shear force values increases. Overall, Aboaca strain was considered to have best performances for production.

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Effect of substituting guinea grass with soybean hulls on production performance and digestion traits in fattening rabbits

World Rabbit Science ◽

10.4995/wrs.2017.6654 ◽

2017 ◽

Vol 25 (3) ◽

pp. 241 ◽

Cited By ~ 1

Author(s):

S.M. Shang ◽

Z.Y. Wu ◽

G.Y. Liu ◽

C.R. Sun ◽

M.W. Ma ◽

...

Keyword(s):

Gastrointestinal Tract ◽

Adverse Effects ◽

Growth Performance ◽

Meat Quality ◽

Feed Efficiency ◽

Carcass Traits ◽

Production Performance ◽

Apparent Digestibility ◽

Soybean Hulls ◽

Guinea Grass

The objective of this study was to evaluate the use of soybean hulls (SH) to substitute guinea grass (GG), traditionally used as fibre source in the diets of fattening rabbits on performance, coefficients of total tract apparent digestibility (CTTAD) of nutrients, gastrointestinal tract development and caecum fermentation. A total of 160 mixed sex Hyla commercial meat rabbits were allocated to 4 experimental groups (40 per treatment) differing in the SH level inclusion in the diet offered to rabbits from 40 to 90 d of age: 0, 50, 100 and 200 g/kg as-fed basis: SH0, SH50, SH100 and SH200 groups, respectively. Growth performance was recorded from 40 to 90 d of age, CTTAD of nutrients from 86 to 90 d of age, and gastrointestinal tract development, caecum fermentation and carcass traits were determined at 90 d of age. Average daily feed intake and the feed/gain ratio were lower in SH100 and SH200 groups than in SH0 group (P0.05). In conclusion, our results suggest that SH can substitute GG in the diets of fattening rabbits up to 200 g/kg in diet with no adverse effects on the growth performance, feed efficiency, carcass traits and meat quality.

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Effect of chicken genotype on growth performance and feed consumption in the development of broiler lines

Nigerian Journal of Animal Production ◽

10.51791/njap.v40i2.1131 ◽

2020 ◽

Vol 40 (2) ◽

pp. 1-6

Author(s):

S. A. Amusan ◽

C. O. N. Ikeobi ◽

A. O. Adebambo ◽

B. O. Agaviezor ◽

M. Wheto ◽

...

Keyword(s):

Body Weight ◽

Growth Performance ◽

Conversion Efficiency ◽

Feed Intake ◽

Feed Efficiency ◽

Growth Traits ◽

Feed Consumption ◽

Feed Conversion ◽

Reciprocal Crosses ◽

Feed Conversion Efficiency

This experiment was conducted to assess the effect of chicken genotype on the growth performance, feed intake and feed efficiency of the progenies resulting from pure, straight and reciprocal cross of Giriraja (Gr) and Alpha chickens. Data obtained on body weight, body length, breast girth, keel length, feed intake and feed efficiency were analyzed using general linear models analysis of variance. Generally, all growth traits and feed consumption characteristics were significantly affected (P < 0.05) by chicken genotype. Growth traits and feed intake increased as birds advanced in age. Giriraja X Giriraja purebred chickens had the highest body weight, breast girth, feed intake and feed conversion efficiency through out the experimental period. However, the progenies resulting from the reciprocal crosses of Alpha X Gr had significant higher body weight and keel. Also, the feed conversion efficiency of the reciprocal crosses were better than the dihybrid cross progenies. The results therefore suggest that the superiority exhibited by the Giriraja could be utilized to improve the growth performance of the indigenous chicken thereby speed up desirable progress in the improvement of the indigenous broiler line.

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Effects of sire line, birth weight and sex on growth performance and carcass traits of crossbred pigs under standardized environmental conditions

Archives Animal Breeding ◽

10.5194/aab-63-367-2020 ◽

2020 ◽

Vol 63 (2) ◽

pp. 367-376

Author(s):

Kathrin Elbert ◽

Neal Matthews ◽

Ralf Wassmuth ◽

Jens Tetens

Keyword(s):

Birth Weight ◽

Growth Performance ◽

Meat Quality ◽

Feed Efficiency ◽

Carcass Traits ◽

Final Body Weight ◽

Selection For ◽

And Gender ◽

Terminal Sire ◽

Crossbred Pigs

Abstract. A variety of available terminal sire lines makes the choice of terminal sire line complex for the pig producer. Higher birth weights are important for subsequent growth performance and selection for this trait is also necessary in sire lines. The aim was to investigate the effect of sire line, birth weight and gender on growth performance, carcass traits and meat quality. In total 3844 crossbred pigs from Camborough Pig Improvement Company (PIC) dams matched with either a Synthetic (A) or Piétrain (B) sire line were used. Pigs from line A grew faster (p<0.01), showed higher feed intake (p<0.01) and reached a higher final body weight (p≤0.01), but they had a similar efficiency (p=0.179). Leaner carcasses and heavier primal cuts (p<0.001) were observed in pigs from line B. Carcasses from pigs sired by line A had higher meat quality (p<0.001). Males had a higher growth rate (p≤0.05) but had a poorer feed efficiency (p<0.01). Heavier birth weight pigs and females had leaner, higher value carcasses with heavier primal cuts (p<0.001) compared to middle and low birth weight females or males. Sire line by sex interactions was significant for growth (p≤0.05) and carcass traits (p<0.001). Interaction between sire line and birth weight classes were only detected for loin depth (p<0.01). Line A is preferable if the numbers of fatting pigs per fattening place and year should be improved, and line B is an option to increase leanness and carcass primal cuts.

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Effects of dietary inclusion of GuarPro F-71 on the growth performance and nutrient metabolism in young growing pigs

Journal of Applied Animal Nutrition ◽

10.3920/jaan2020.0015 ◽

2020 ◽

Vol 8 (3) ◽

pp. 143-149

Author(s):

M.S. Hasan ◽

R.M. Humphrey ◽

Z. Yang ◽

M.A. Crenshaw ◽

J. Brett ◽

...

Keyword(s):

Growth Performance ◽

Soybean Meal ◽

Feed Intake ◽

Feed Efficiency ◽

Average Daily Gain ◽

Plasma Concentrations ◽

Clinical Signs ◽

Growing Pigs ◽

Future Research ◽

Nutrient Metabolism

Using alternative feedstuffs can be a feasible measure to reduce swine production cost. GuarPro F-71 (GP71), a newly developed guar meal product, is considered as a potential protein source for pigs. This preliminary study was conducted to evaluate the effects of GP71 inclusion in feed on growth performance and nutrient metabolism of growing pigs. Sixty crossbred barrows (31.9±1.84 kg body weight (BW)) were allotted to one of five dietary treatments in a completely randomised experiment design, with four pens/treatment and three pigs/pen. Diet 1 was a maize- and soybean-based basal control diet formulated to meet NRC recommendations. GP71 was used to replace 25, 50, 75, and 100% soybean meal in diet 1 (on an equivalent crude protein (CP) basis) to generate diets 2, 3, 4, and 5, respectively. Crystalline amino acids were used to balance the essential amino acid concentrations across the five diets. Inclusion of GP71 quadratically reduced average daily feed intake (ADFI) (P=0.01) with no observed clinical signs of unhealthiness of pigs. The blood plasma concentrations of six metabolites, including urea nitrogen, total protein, albumin, glucose, total cholesterol and total triglycerides, were not affected (P>0.30), indicating that the pigs’ metabolic utilisation of nutrients was not compromised. The cubic effect (P<0.05) of dietary GP71 inclusion on G:F ratio suggested that the level of soybean meal replacement (up to 75% soybean meal) did not negatively affect feed efficiency in pigs. In short, the feed intake reduction due to the dietary GP71 inclusion was, if not solely, responsible for the average daily gain (ADG) and final BW reduction. This study suggested that using GP71 to replace soybean meal up to 75% (on an equivalent CP basis) can negatively affect ADFI and ADG, but not feed efficiency, in growing pigs. The reasons for the ADFI and ADG reduction need to be understood in future research.

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Growth performance, carcass traits, blood parameters, rumen enzymes, and fattening earnings of cattle fed corn silage/corn stalk silage based finishing diets

Czech Journal of Animal Science ◽

10.17221/108/2018-cjas ◽

2018 ◽

Vol 63 (No. 12) ◽

pp. 483-491

Author(s):

L. He ◽

H. Wu ◽

Q. Meng ◽

Z. Zhou

Keyword(s):

Body Weight ◽

Weight Gain ◽

Growth Performance ◽

Feed Intake ◽

Feed Efficiency ◽

Rumen Fluid ◽

Blood Parameters ◽

Corn Silage ◽

Corn Stalk ◽

Corn Grain

This study was conducted to investigate the growth performance, carcass traits, blood parameters, rumen enzymes, and fattening earnings of beef cattle when substituting corn stalk silage with corn silage or corn grain in finishing rations. Forty-five Bohai Black steers were selected and fattened in a three-phase (4 weeks–4 weeks–16 weeks) way with one of three diets based on corn silage (CS), corn stalk silage (SS) without/with equivalent corn grain supplement (SSC), respectively. During the 24-week trial, individual feed intake and body weight were recorded every four weeks. By the end, blood and rumen fluid were sampled, and all the cattle were slaughtered to evaluate carcass performance. There were no significant differences found in the body weight gain, daily feed intake or feed efficiency among different dietary treatments over the whole finishing period except that the cattle fed CS achieved higher weight gain and feed efficiency in Phase 2 than those fed SS or SSC along with a lower feed intake than that of cattle fed SSC. No significant effect was found on the hot carcass weight, chilled carcass weight, dressing percentage, aging loss, loin eye area, and the weights of chuckeye, ribeye, striploin, and tenderloin. The cattle fed CS showed lower blood concentrations of ALT and glucose along with a higher ratio of AST and ALT than those fed SS. The cattle fed SSC also presented a higher activity of avicelase in the rumen fluid and their fattening earnings were approximately $27.50 less than those of the cattle fed CS or SS. These results suggest that substituting corn stalk silage with corn silage or corn grain could not improve animal performance and it is more economical to substitute corn stalk silage with corn silage rather than supplement equivalent corn grain in a high-concentrate finishing ration.

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