scholarly journals Effects of Dietary Energy on Growth Performance, Rumen Fermentation and Bacterial Community, and Meat Quality of Holstein-Friesians Bulls Slaughtered at Different Ages

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1123 ◽  
Author(s):  
Haibo Wang ◽  
Hang Li ◽  
Fei Wu ◽  
Xinjun Qiu ◽  
Zhantao Yu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Growth Performance ◽  
Meat Quality ◽  
Energy Levels ◽  
Average Daily Gain ◽  
Rumen Fermentation ◽  
Dietary Energy ◽  
Different Ages ◽  
Slaughter Age

The objective of this study was to evaluate the effects of dietary energy levels on growth performance, rumen fermentation and bacterial community, and meat quality of Holstein-Friesians bulls slaughtered at different ages. Thirty-six Holstein-Friesians bulls (17 months of age) were divided into a 3 × 3 factorial experiment with three energy levels (LE, ME and HE; metabolizable energy is 10.12, 10.90 and 11.68 MJ/kg, respectively) of diets, and three slaughter ages (20, 23 and 26 months). Results indicated that bulls fed with ME and HE diets had higher dry matter intake, average daily gain, and dressing percentage at 23 or 26 months of age. The ME and HE diets also reduced bacterial diversity, altered relative abundances of bacteria and produced lower concentrations of acetate, but higher butyrate and valerate concentrations in rumen fluid. Increasing in dietary energy and slaughter age increased the intramuscular fat (IMF) and water holding capacity. In summary, Holstein-Friesians bulls fed with ME and HE diets, slaughtered at 23 and 26 months of age could be a good choice to produce beef with high IMF. Slaughter age may have less influence than dietary energy in altering fermentation by increasing amylolytic bacteria and decreasing cellulolytic bacteria, and thus, further affecting meat quality.

scholarly journals Effect of γ-aminobutyric acid producing bacteria on in vitro rumen fermentation, growth performance, and meat quality of Hanwoo steers

2020 ◽  
Vol 33 (7) ◽  
pp. 1087-1095 ◽  
Author(s):  
Lovelia L. Mamuad ◽  
Seon Ho Kim ◽  
Min Jung Ku ◽  
Sang Suk Lee
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Rumen Fermentation ◽  
Gas Production ◽  
Aminobutyric Acid ◽  
Beef Marbling ◽  
In Vitro Rumen Fermentation

Objective: The present study aimed to evaluate the effects of γ-aminobutyric acid (GABA)- producing bacteria (GPB) on in vitro rumen fermentation and on the growth performance and meat quality of Hanwoo steers.Methods: The effects of GPB (Lactobacillus brevis YM 3-30)-produced and commercially available GABA were investigated using in vitro rumen fermentation. Using soybean meal as a substrate, either GPB-produced or commercially available GABA were added to the in vitro rumen fermentation bottles, as follows: control, no additive; T1, 2 g/L GPB; T2, 5 g/L GPB; T3, 2 g/L autoclaved GPB; T4, 5 g/L autoclaved GPB; T5, 2 g/L GABA; and T6, 5 g/L GABA. In addition, 27 Hanwoo steers (602.06±10.13 kg) were subjected to a 129-day feeding trial, during which they were fed daily with a commercially available total mixed ration that was supplemented with different amounts of GPB-produced GABA (control, no additive; T1, 2 g/L GPB; T2, 5 g/L GPB). The degree of marbling was assessed using the nine-point beef marbling standard while endotoxin was analyzed using a Chromo-Limulus amebocyte lysate test.Results: In regard to in vitro rumen fermentation, the addition of GPB-produced GABA failed to significantly affect pH or total gas production but did increase the ammonia nitrogen (NH3-N) concentration (p<0.05) and reduce total biogenic amines (p<0.05). Animals fed the GPB-produced GABA diet exhibited significantly lower levels of blood endotoxins than control animals and yielded comparable average daily gain, feed conversion ratio, and beef marbling scores.Conclusion: The addition of GPB improved in vitro fermentation by reducing biogenic amine production and by increasing both antioxidant activity and NH3-N production. Moreover, it also reduced the blood endotoxin levels of Hanwoo steers.

scholarly journals Performance and carcass evaluation of balami rams finished on diets with varying energy level

2020 ◽  
Vol 44 (2) ◽  
pp. 223-229
Author(s):  
S. B. Akinleye ◽  
A. B. Omojola ◽  
U. A. Offong ◽  
K. D. Afolabi ◽  
J. S. Luka
Keyword(s):  
Growth Performance ◽  
Energy Levels ◽  
Descriptive Statistics ◽  
Farm Animals ◽  
Daily Weight Gain ◽  
Carcass Quality ◽  
Dietary Energy ◽  
Genetic Status ◽  
Study Performance

Fattening of farm animals is a way of increasing the rate of meat deposit after maturity. Its effectiveness depends on genetic status of the animal and the diet fed to the animal. In this study, performance and carcass evaluation of balami rams finished on diets with varying energy levels were carried. Forty-eight rams of Balami breed, weighing 20.75±1.50- 22.50±1.91kg were randomly alloted to four dietary energy levels (EL): 2.20Mcal/kg (EL ), I 2.40 Mcal/kg ((EL ), 2.60 Mcal/kg ((EL ) and 2.80 Mcal/kg ((EL ) for 90 days. The feed II III IV intake and daily weight gain of the animals in each treatment were determined and the average recorded. Three Balami rams were randomly selected from each treatment and sacrificed to determine the dressing percentage (DP), carcass weight (CW), fat deposit (FD) and meat yield (MY). Data were analysed using descriptive statistics and ANOVA at á . The 0.05 FBW (kg) of Balami rams in group EL , EL , EL and EL were 41.88.6±1.97, 42.12±1.84, I II III IV 46.13±1.65 and 52.24±2.50 while the FCR of animals on treatments EL (5.3±0.28) and EL I II (5.2±0.26) were higher than EL (4.7±0.82) and EL (4.0±0.65). The DP (%) were 54.9, III IV 54.9, 55.8 and 56.1, the FD (%) were 9.00,9.59,8.92 and 11.46 and the MY (%) were 75.2, 74.7, 75.5 and 72.0 for rams on EL , EL , EL and EL The results indicate that, increasing I II III IV. levels of energy improved growth performance and carcass quality of Balami rams. Therefore, higher level of dietary energy (2.80 Mcal/kgDM and 14% CP) could be suggested for optimizing growth performance and meat quality of Balami ram under fattening condition.

scholarly journals Influence of Maternal Carbohydrate Source (Concentrate-Based vs. Forage-Based) on Growth Performance, Carcass Characteristics, and Meat Quality of Progeny

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2056
Author(s):  
Erin R. Gubbels ◽  
Janna J. Block ◽  
Robin R. Salverson ◽  
Adele A. Harty ◽  
Warren C. Rusche ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Late Gestation ◽  
Carbohydrate Source ◽  
Ultrasound Measurements ◽  
Concentrate Treatment ◽  
Progeny Performance

The objective of this research was to investigate the influence of maternal prepartum dietary carbohydrate source on growth performance, carcass characteristics, and meat quality of offspring. Angus-based cows were assigned to either a concentrate-based diet or forage-based diet during mid- and late-gestation. A subset of calves was selected for evaluation of progeny performance. Dry matter intake (DMI), body weight (BW), average daily gain (ADG), gain to feed (G:F), and ultrasound measurements (muscle depth, back fat thickness, and intramuscular fat) were assessed during the feeding period. Carcass measurements were recorded, and striploins were collected for Warner-Bratzler shear force (WBSF), trained sensory panel, crude fat determination and fatty acid profile. Maternal dietary treatment did not influence (p > 0.05) offspring BW, DMI, ultrasound measurements, percent moisture, crude fat, WBSF, or consumer sensory responses. The forage treatment tended to have decreased (p = 0.06) 12th rib backfat compared to the concentrate treatment and tended to have lower (p = 0.08) yield grades. The concentrate treatment had increased (p < 0.05) a* and b* values compared to the forage treatment. These data suggest variation in maternal diets applied in this study during mid- and late-gestation has limited influence on progeny performance.

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 The “Criollo Negro de la Costa Ecuatoriana” pigs: effect of sex and rearing system on performance, carcass and meat traits

2016 ◽  
Vol 14 (1) ◽  
pp. e0601
Author(s):  
Martín A. González ◽  
Franklin R. Peláez ◽  
Andrés L. Martínez ◽  
Carmen Avilés ◽  
Francisco Peña
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Mineral Composition ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Morphometric Parameters ◽  
Lower Percentage ◽  
Quality Traits ◽  
Daily Gain

<p>The objective of this study was to evaluate the effect of rearing system (confinement, C <em>vs </em>semi-confinement, SC) and sex (barrows <em>vs </em>females) on growth performance, carcass traits and meat quality of “Criollo negro de la costa ecuatoriana” pigs. A total of 32 pigs, 16 barrows and 16 gilts were used. The average daily gain (0.30 kg/day <em>vs </em>0.22 kg/day), slaughter weight (51.4 kg <em>vs </em>43.1 kg), morphometric parameters and weights for the most valuable meat cuts were higher in C pigs than in SC pigs, whereas hot and cold carcass yields were higher in SC pigs than in C pigs. The loin and sirloin percentages from C pigs were lower and higher compared with those SC pigs, respectively. Carcass of C pigs showed higher percentage of fat and lower percentage of lean and bone that SC pigs. The rearing system had scarce effects on meat quality traits and mineral composition. Meat from C pigs showed lower scores for color, brightness, and unctuousness, and higher for metallist taste, juiciness and persistence of flavor than SC pigs. Few sensory attributes of cooking chops were affected by sex. Metallist taste was higher in barrows, while brightness and lard flavor were higher in females. It can be concluded that the rearing system had a significant effect on most of the productive and carcass traits, whereas its effect was limited on the meat traits. Sex had little influence on most of the traits studied.</p>

scholarly journals Effects of dietary energy on growth performance, carcass characteristics, serum biochemical index, and meat quality of female Hu lambs

2020 ◽  
Vol 6 (4) ◽  
pp. 499-506
Author(s):  
Yancan Wang ◽  
Qiye Wang ◽  
Chunpeng Dai ◽  
Jianzhong Li ◽  
Pengfei Huang ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Dietary Energy ◽  
Biochemical Index ◽  
Serum Biochemical

scholarly journals Comparison of Growth Performance and Meat Quality Traits of Commercial Cross-bred Pig versus Large Black Pig Breeds

2020 ◽  
Author(s):  
Yongjie Wang ◽  
Keshari Thakali ◽  
Palika Morse ◽  
Sarah Shelby ◽  
Jinglong Chen ◽  
...  
Keyword(s):  
Energy Metabolism ◽  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Rna Seq ◽  
Pig Breeds ◽  
Physiological Processes ◽  
Domestic Breed ◽  
High Feed

Abstract BackgroundThe meat quality of different pig breeds is associated with their different muscle tissue physiological processes, which involves a large variety of genes related with muscle fat and energy metabolism. Understanding the differences of biological processes of muscle after slaughter is helpful to reveal the meat quality development of different breeds. Therefore, 8 domestic Large Black pigs (BP), a domestic breed with high fat contents in meat, and 7 Cross-bred commercial pig (CP), which has a high feed efficiency with high lean meat, was used to investigate the differences of their meat quality and genotype.ResultsThe average daily gain (ADG) and hot carcass weight (HCW) of CP were higher than BP, but the back-fat thickness of BP was higher than CP ( P < 0.05). The CP had higher a* but lower h value than BP ( P < 0.05). The metmyoglobin (MMb) percentage of CP was higher ( P < 0.05) than BP. The fat content and oxygen consumption of longissimus dorsi (LD) muscle in BP were higher ( P < 0.05) than CP. BP had higher SFA and MUFA content, but CP had higher PUFA content ( P < 0.05). The RNA-seq was applied to compare the genome differences between the two pig breeds. The RNA-seq data highlighted 201 genes differentially expressed between breeds ( P < 0.05), with 75 up-regulated and 126 down-regulated genes in BP compared with CP. The real-time PCR was used to validate the results of RNA-seq for 8 genes, and the genes related with lipid and energy metabolism were highly expressed in BP ( P < 0.05).ConclusionsBased on the results, BP had superior general meat quality to CP, while the growth performance of CP was better, and the genotype differences between these two breeds may cause the meat quality and growth performance variance.

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