The Effects of Magnolol Supplementation on Growth Performance, Meat Quality, Oxidative Capacity, and Intestinal Microbiota in Broilers

AbstractThe aim of this study was to determine whether dietary supplementation with zinc oxide nanoparticales (NP-ZnO) as a substitute for the conventional ZnO affects the intestinal digestibility of selected minerals, growth performance and meat quality in turkeys. The replacement of ZnO with NP-ZnO had no effect on the intestinal digestibility of Zn, Cu, Fe and Ca, whereas the lowest dose of supplemental Zn reduced Zn digestibility. The applied inclusion levels and sources of Zn had no effect on the growth performance (except the feed intake) of turkeys, including liveability. No differences in the relative weights of the heart, spleen and bursa of Fabricius (except the liver), or the weights of the femur and tibia were found between the dietary treatments. Neither the dose nor the source of supplemental Zn influenced carcass dressing percentage or the share of breast, thigh and drumstick muscles in the carcass. In comparison with the highest and moderate doses of Zn, the lowest inclusion level of Zn contributed to increased yellowness of breast meat (P=0.005). The analyzed doses and sources of supplemental Zn exerted varied effects on the redox status of fresh and frozen breast meat. In conclusion, the growth performance of turkeys, carcass yield and composition as well as the redox status of fresh and frozen breast meat were generally similar, regardless of the dietary source and level of Zn. The beneficial effect of Zn addition at 100 mg/kg was improved Zn and Ca digestibility, and increased redness of breast meat.

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Effect of Palm Kernel Protein on Growth Performance and Meat Quality of Broiler Chickens

Tavukçuluk Araştırma Dergisi ◽

10.34233/jpr.707532 ◽

2020 ◽

Vol 17 (1) ◽

pp. 41-47

Author(s):

Nur Shahirah SHAHİDAN ◽

Teck LOH ◽

Mohamed ALSHELMANİ ◽

Chong HAU ◽

Fu LEE ◽

...

Keyword(s):

Growth Performance ◽

Meat Quality ◽

Broiler Chickens ◽

Palm Kernel ◽

Kernel Protein

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Desirable effects of dietary 4-O-methyl-glucuronoarabinoxylan from the Echinacea plant on growth performance, thigh meat quality and development of small intestine in female Partridge-Shank broilers

Animal Production Science ◽

10.1071/an18416 ◽

2020 ◽

Vol 60 (2) ◽

pp. 288

Author(s):

Qing-Chang Ren ◽

Jing-Jing Xuan ◽

Chuan-Yan Che ◽

Xin-Chao Yan ◽

Zhong-Ze Hu

Keyword(s):

Small Intestine ◽

Growth Performance ◽

Meat Quality ◽

Dietary Supplementation ◽

Bodyweight Gain ◽

Lower Percentage ◽

Feed Ratio ◽

Muscle Ph ◽

Access To Water

In this trial we aimed to assess the effects of dietary supplementation of 4-O-methyl-glucuronoarabinoxylan (4OMG) on growth performance, thigh meat quality and small intestine development of female Partridge-Shank broilers. A total of 240 1-day-old female Partridge-Shank broilers were randomly distributed to four groups with three replicates of 20 within each group. Groups received either 0, 15, 20 or 25 g 4OMG/kg DM of diet. During the whole experiment of 60 days, broilers had ad libitum access to water and feed. At pen level, feed intake was recorded daily and broilers were weighed at the start and end of the experiment. For each group, three pens with a total of 20 broilers were randomly selected to determine the thigh meat quality and the small intestine development of broilers. Broilers fed diets with higher 4OMG had greater final liveweight (P = 0.004), daily bodyweight gain (P = 0.004) and gain-to-feed ratio (P < 0.001), muscle pH values (P = 0.031) and redness (P = 0.001), duodenal weight index (P = 0.042), jejunal (P = 0.043) and ileal length (P = 0.049), duodenal (P < 0.001) and ileal villus height (P = 0.008), but lower percentage of dead birds (P < 0.001), drip loss (P = 0.042) and shear force value (P = 0.043) of the thigh muscles. These results indicate that increasing dietary supplementation of 4OMG may improve growth performance and meat quality of female Partridge-Shank broilers through better development of small intestine.

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

Animals ◽

10.3390/ani9121123 ◽

2019 ◽

Vol 9 (12) ◽

pp. 1123 ◽

Cited By ~ 4

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.

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