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

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 906 ◽  
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%.

Effects of dietary crude protein levels and cysteamine supplementation on meat quality and related indices of finishing pigs

2019 ◽  
Vol 99 (1) ◽  
pp. 123-131
Author(s):  
Y.P. Zhu ◽  
P. Zhou ◽  
L. Zhang ◽  
J.L. Li ◽  
F. Gao ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Meat Quality ◽  
Crude Protein ◽  
Finishing Pigs ◽  
Longissimus Dorsi Muscle ◽  
Protein Levels ◽  
Lipogenic Genes ◽  
Low Protein ◽  
Dietary Crude Protein

The aim of this study was to investigate the effects of dietary crude protein levels and cysteamine (CS) supplementation on meat quality and related indices in longissimus dorsi muscle of finishing pigs. One hundred and twenty barrows were randomly allocated to a 2 × 2 factorial arrangement with five replicates of six pigs each. The primary variations were crude protein levels (14% or 10%) and CS supplemental levels (0 or 140 mg kg−1). After 41 d, 10 pigs per treatment were slaughtered. The results showed that low-protein level diets (LPDs) decreased Warner–Bratzler shear force (P < 0.01) and increased the content of intramuscular fat (P < 0.01). The mRNA expressions of lipogenic genes were up-regulated (P < 0.01), and the mRNA expressions of lipolytic genes were down-regulated (P < 0.01) in pigs fed LPD. LPDs increased the mRNA expressions of μ-calpain, and decreased the mRNA expression of calpastatin (P < 0.01). In addition, CS supplementation increased the mRNA expression of μ-calpain (P < 0.01). In conclusion, LPD improved the meat quality probably through regulating the lipogenesis, lipolysis, and the proteolysis process in muscle. The CS supplementation did not affect the meat quality of finishing pigs. Moreover, no significant interaction between dietary protein levels and CS supplementation for the meat quality of finishing pigs was observed.

scholarly journals Effect of BioPlus YC Probiotic Supplementation on Gut Microbiota, Production Performance, Carcass and Meat Quality of Pigs

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1581
Author(s):  
Artur Rybarczyk ◽  
Elżbieta Bogusławska-Wąs ◽  
Alicja Dłubała
Keyword(s):  
Bacillus Subtilis ◽  
Meat Quality ◽  
Bacillus Licheniformis ◽  
Average Daily Gain ◽  
Production Performance ◽  
Probiotic Bacteria ◽  
Control Group ◽  
Production Traits ◽  
Feed Conversion

The objective of the study was to determine the effects of probiotic bacteria Bacillus licheniformis and Bacillus subtilis on microbiological properties of feed mixtures and on the digestive tract content as applicable to production traits and carcass characteristics of fatteners. The experiment was performed on 83,838 fatteners from four successive (insertions) productions in two groups. From the seventy eighth day of age till marketing to the slaughter plant, the pigs were supplied with BioPlus YC probiotic (Chr. Hansen) in the amount of 400 g/t. The preparation contained a complex of probiotic bacteria Bacillus licheniformis DSM 5749, and Bacillus subtilis DSM 5750 spores in a 1:1 ratio. From the fourth insertion, after reaching a body weight of approximately 112 kg, 60 fatteners were selected from each group to measure carcass quality and half of them for meat quality evaluation. Moreover, microbiological analyses in feed and colon were performed. The study showed that BioPlus YC probiotics supplementation resulted in a significantly higher count of B. subtilis and B. licheniformis in the feed, a higher count of B. subtilis, B. licheniformis and LAB, as well as a lower count of Enterobacteriaceae, Enterococcus, Clostridium and Bacillus sp. in the mucosa and in the colorectal content of the test pigs. Our work has shown that supplementation with the BioPlus YC probiotic had a positive effect on the production traits of pigs mainly by reducing mortality (2.83%, p = 0.010), lowering feed conversion ratio—FCR (2.59 kg/kg, p = 0.013), better average daily gain—ADG (0.95 kg/day, p = 0.002) and shorter fattening period (77.25 days, p = 0.019) when compared to the control group (4.19%; 2.79 kg/kg; 0.89 kg/day; 92.8 days, respectively). The addition of the specific Bacillus bacteria did not influence carcass and meat characteristics of the test fatteners.

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

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 330 ◽  
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.

scholarly journals Efficiency and profitability in pork production

1986 ◽  
Vol 58 (1) ◽  
pp. 19-25
Author(s):  
Olli Rantala
Keyword(s):  
Conversion Rate ◽  
Feed Conversion ◽  
Gross Margin ◽  
Internal Factors ◽  
Pork Production ◽  
The Cost ◽  
Feed Conversion Rate ◽  
Successful Production

Under prevailing production restrictions the profitability of agricultural production increasingly depends not only on prices of products and inputs, but on how effectively and economically the existing capacity and animal breeds are utilized on farms. The technical efficiency of pork production in Finland is generally high. The average feed conversion rate on farms is only about 16 % lower and daily liveweight gain 20 % less than results from experimental stations. Variation between farms is, however, considerable. The means of technical results between the best and poorest farms differ by 20—30 %. Results also tend to deteriorate and relative deviations increase, especially in large piggeries. The average gross margin percentage was 12 %. Variation in the gross margin per pig was wider between farms than between years. The feed conversion efficiency proved to be the most significant factor contributing to profitability in pork production. Variation in the feed conversion rate accounted for 30 % of total variation in the gross margin. Cost variation was one third larger than the variation of total receipts per pig. The cost of feed varied twice as much as piglet cost. Since the genetic quality of animals in a given region is rather even, variations in productivity depend upon internal factors of piggeries. The large variation in efficiency and profitability over farms emphasizes the human factor i.e. the role of the farmer as the most important factor contributing to successful production.

Nutritional effects pre-weaning on growth performance, carcass traits and meat quality of pigs

2020 ◽  
Vol 60 (7) ◽  
pp. 978
Author(s):  
Hong Chen ◽  
Yan Liu ◽  
Hui Li ◽  
Zhengfeng Fang ◽  
Yan Lin ◽  
...  
Keyword(s):  
Serum Concentration ◽  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Suckling Period ◽  
Feed Conversion ◽  
Cross Sectional ◽  
Nutritional Restriction

The objective of the present study was to investigate the effect of nutritional restriction during the suckling period on growth performance, carcass traits and meat quality of fattening pigs. A one-way experimental design was used. In total, 24 male pigs of normal birthweight (1.54 ± 0.05 kg) were randomly allocated at 7 days of age to three groups: control, fed ad libitum; 30% nutritional restriction (Re30%); and 60% nutritional restriction (Re60%). The Re30% and Re60% groups showed decreased average daily gain, average daily feed intake and feed conversion ratio from Day 7 to Day 28. After Day 28, differences in these parameters were observed only in the Re60% group relative to the control. With regard to hormone levels, the Re60% group showed decreased serum concentration of insulin-like growth factor-1 at Day 28 and increased serum concentration of growth hormone at Day 147. Furthermore, the Re60% group had decreased carcass weight, ham weight and dressing percentage, and increased carcass lean percentage relative to the control, as well as lower cross-sectional area and myofibre diameter of muscle. The Re60% group had lower levels of myosin heavy chain (MyHC) IIx and MyHC IIb mRNA and a higher percentage of MyHC I and MyHC IIa mRNA in longissimus dorsi muscle than the Re30% group. In conclusion, nutritional restriction during the suckling period decreased weaning weight, with post-weaning growth performance, carcass traits and myofibre type affected in the Re60% group rather than Re30% group.

scholarly journals Growth evaluation of Oreochromis niloticus fed different concentrations of choline and methionine

2020 ◽  
Vol 5 (2) ◽  
pp. 122-128
Author(s):  
Rudy Agung Nugroho ◽  
Normala Sari ◽  
Retno Aryani ◽  
Hetty Manurung ◽  
Rudianto Rudianto
Keyword(s):  
Oreochromis Niloticus ◽  
Feed Efficiency ◽  
Crude Protein ◽  
Growth Parameters ◽  
Body Weight Gain ◽  
Average Daily Gain ◽  
Feed Conversion ◽  
Tilapia Diet ◽  
And Control ◽  
Feed Conversion Rate

A 12-week research was conducted to determine the effects of choline and methionine supplementation on the growth performance of Nile tilapia (Oreochromis niloticus). Three diets, P2-P4 with 0.04; 0.08; 0.12 % of choline; P6-P8 with same levels choline plus methionine (0.15 %); a diet with only 0.15 % methionine (P5); and control without any supplementation (P1) were fed to tilapia (initial weight ±21.05 g) for 12 weeks. Final weight (FW), Body Weight Gain (BWG), Average Daily Gain (ADG), Specific Growth Rate (SGR), and Protein Efficiency Ratio (PER), Feed Efficiency (FE), Feed Intake (FI), Feed Conversion Rate (FCR), Survival Rate (SR), crude protein and lipid of fish fed various levels of choline and methionine were also measured. The results showed that tilapia fed 0.04 % choline (P2) had significantly better growth parameters and feed efficiency than other groups. Meanwhile, SR of tilapia was not affected by any supplementation of choline and methionine. The tilapia fed 0.08% choline (P3) showed the highest crude protein (52.50 ± 0.98 %) in the carcass proximate but low lipid (19.03 ± 0.10 %). This finding demonstrated the benefits of choline (0.04-0.08 %) supplementation in the tilapia diet in term of growth and carcass proximate.

scholarly journals Lysine supplementation of barley wet distillers’ solids diets for growing-finishing pigs

1996 ◽  
Vol 5 (2) ◽  
pp. 157-166 ◽  
Author(s):  
Jarmo Valaja ◽  
Hilkka Siljander-Rasi ◽  
Timo Alaviuhkola ◽  
Asko Rantanen
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Control Diet ◽  
Live Weight ◽  
Experimental Period ◽  
Daily Weight Gain ◽  
Finishing Pigs ◽  
Feed Conversion ◽  
Soyabean Meal

A growth experiment was conducted to study the effect of different lysine supplementation levels of barley wet distillers’ solids (WDS) diets on the performance and the carcass quality of pigs (25.5-95.5 kg live weight). A total of 160 pigs were divided into four groups of 40 animals. Four pigs of the same sex were placed in each pen and fed one of the four experimental diets; a barley-soyabean meal (SBM) control diet (167 g crude protein (CP) /kg dry matter (DM) and 7.6 g lysine/feed unit (FU)) or three similar barley-WDS diets (204 g CP/kg DM) which were supplemented with synthetic lysine to contain 7.7, 9.2 or 10.7 g lysine/FU. Lysine supplementation linearly improved the daily weight gain (DG) and feed conversion ratio (FCR) of the pigs during growing (1-5 weeks) (p < 0.001), finishing (6th week onward) (p < 0.001) and the whole experimental period (p < 0.001). However, during the whole growing-finishing period the performance of the pigs levelled off at the lysine level of 9.2 g/FU and daily supply of 18.0 g, respectively(quadratic effect: p < 0.05 for DG and p < 0.01 for FCR). The pigs on the SBM diet grew faster and more efficiently than did the pigs on the WDS diets with similar lysine content (p < 0.05).

scholarly journals THE EFFECT OF HERBAL EXTRACTS AND PROBIOTIC FEEDING ON PRODUCTIVITY AND QUALITY OF BROILERS

2019 ◽  
Vol 7 (3) ◽  
pp. 5-9 ◽  
Author(s):  
Ahmad Syukur Hasibuan ◽  
J Silalahi ◽  
M Masfria
Keyword(s):  
Body Weight ◽  
Treatment Group ◽  
Total Cholesterol ◽  
Crude Protein ◽  
Positive Control ◽  
Herbal Extract ◽  
Feed Conversion ◽  
Protein Levels ◽  
Feed Conversion Rate

ABSTRACT Objective: To find out the effect of probiotics, javanese turmeric (Curcuma xanthorrhiza) and breadfruit (Artocarpus altilis) leaves extract in feedon productivity and quality of broilers. Design: The design of this study was experimental research. The viscous herbal extract from javanese turmeric and breadfruit leaves were prepared by maceration with 96% ethanol and the probiotics used EM4 (Effective Microorganisms-4). This study used male chicks and divided into 5 groups:  (1) negative control treatment (feed), (2) positive controls  (feed+antibiotics), (3) feed+0.1% extract+1% probiotics, (4) feed+0.2% extract+2% probiotics and (5) feed +0.3% extract+3% probiotics. The positive control used erythromycin. Feed intake, body weight gain and feed conversion rate were observed for 35 days. Total cholesterol and crude protein levels were examined on day 35. Interventions: The intervened variable was the concentration of extract used. Main outcome measures: The main measurement in this study were feed conversion rate,total cholesterol and crude protein levels. Results: The results showedthat combination of probiotics, javanese turmeric and breadfruit leaves herbal extract increased body weight 10.71% and feed intake 61.60%, decreased feed conversion 13.97% and total cholesterol 27.95% of treatment group and significantly different with negative and positive control groups (p<0.05) but did not affect (p>0.05) to crude protein levelsof treatment group or negative and positive control group. Conclusion: The administration of probiotics, javanese turmeric and breadfruit leaves herbal extract increased productivity and decreased cholesterol levels but did not affect crude protein levels in broilers.

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