. The aim of this study was to determine the effect of herbal feed additive on
growth performance, carcass characteristics, the chemical composition of
breast muscles and selected meat quality parameters in broiler chickens. The
experiment was performed on 1080 Ross 308 chickens, which were randomly
divided into six groups with six replicates per group. In experimental groups,
dietary energy concentration was reduced by 0.10 or 0.25 MJ kg −1 , and
the diets were or were not supplemented with the Superliv herbal formula at
500 g t −1 of diet. A statistical analysis revealed that Superliv had a
beneficial influence on the final body weights (BWs) of birds, average daily
gain (ADG), feed conversion ratio (FCR), European Efficiency Index (EEI) and
the proportion of heart relative to total carcass weight. However, meat
acidity measured 15 min post mortem was higher in experimental groups. A
decrease in dietary energy concentration contributed to a highly significant
increase in the water-holding capacity (WHC) of meat and natural drip loss,
an increase in pH 15 , an increase in color lightness, a
decrease in redness, an increase in the fat content of meat, and a decrease
in malondialdehyde (MDA) concentration.

/pdf/the-effect-of-herbal-feed-additive-on-the-growth-performance-1aba4pnip9.pdf

The effect of herbal feed additive on the growth performance, carcass characteristics and meat quality of broiler chickens fed low-energy diets.

The studies aimed to evaluate the impact of milk thistle seeds in broiler chicken feed rations on rearing results, carcass composition and meat quality. The experiment involved 120 broiler chickens randomly allocated to three equinumerous groups (C, MT02, MT23). Each group was divided into five subgroups of eight chickens each. Over the first 21 days of life the birds were fed starter rations, and over the following 21 days received grower rations. Chicken starter/grower diets in groups MT02 and MT23 were supplemented with ground seeds of milk thistle in the amount of 0/2% (MT02) and 2/3% (MT23). It was demonstrated that Silybum marianum added to feed rations over the whole rearing period (group MT23) increased above 3% the birds' body weight on rearing day 42. (p < 0.05) and decreased about 7% the feed conversion ratio (p < 0.05) in comparison to group C. No effect of feeding on the carcass composition was observed, including on muscularity and fattening grade, although diets containing milk thistle reduced (by 15% and 19% in group MT02 and MT23, respectively) the content of crude fat in chicken leg muscles (p < 0.05). The highest (p < 0.05) content of polyunsaturated fatty acids (PUFA) was determined in the breast (38.06%) and leg (37.63%) muscles of chicken receiving feed rations containing Silybum marianum throughout the rearing period. No effect of nutrition on the evaluated physical properties of muscles was observed, except on the decrease in lightness color (L*) and increase in values a* and C as well as a decrease of water holding capacity of the breast muscles. It was found that Silybum marianum in chicken diets had a positive effect on the evaluated meat flavor characteristics of the muscles. To sum up, based on the study results, including ground seeds of milk thistle in broiler chickens nutrition can be recommended in the amount of 2/3% in starter/grower diets, respectively.

https://www.mdpi.com/2076-2615/11/6/1550/pdf

Impact of Milk Thistle (Silybum marianum [L.] Gaertn.) Seeds in Broiler Chicken Diets on Rearing Results, Carcass Composition, and Meat Quality

S t r e s z c z e n i e Celem badan bylo określenie wplywu genotypu na wybrane wyrozniki jakości miesa kurcząt Porownano podstawowy sklad chemiczny oraz wlaściwości technologiczne mieśni piersiowych kurcząt szybko rosnących (Hubbard Flex) i wolno rosnących (Hubbard JA 957) Mieśnie do badan pobrano 24 h po uboju od 6 kur i 6 kogutow z kazdej grupy Na podstawie przeprowadzonych badan stwierdzono, ze mieśnie piersiowe kurcząt wolno rosnących zawieraly istotnie wiecej bialka, a mniej tluszczu i cholesterolu niz mieśnie kurcząt szybko rosnących, co jest korzystne pod wzgledem zywieniowym Ponadto charakteryzowaly sie one wyzszą zdolnością utrzymywania wody wlasnej oraz mniejszą ilością wycieku podczas obrobki termicznej, co ma istotne znaczenie dla producentow przetworow drobiowych

/pdf/porownanie-wybranych-wyroznikow-jakosci-miesa-kurczat-szybko-40d6wq0nlq.pdf

Porównanie wybranych wyróżników jakości mięsa kurcząt szybko i wolno rosnących

Analiza spożycia drobiu i jego rola w diecie człowieka

Porównanie wybranych wyróżników jakości mięsa kurcząt brojlerów i indyków

Wpływ wybranych czynników przyżyciowych na jakość mięsa kurcząt

Influence of selected pre-slaughter factors on chicken meat quality.

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Wpływ wybranych czynników przyżyciowych na jakość mięsa kurcząt

Influence of selected pre-slaughter factors on chicken meat quality.