Effect of different feeding regimens for game pheasants on carcass composition, fatty acid profile and mineral content of meat

Pietrzkiewicz

2022

Animals

The aim of the study was to analyse the fatty acid profile of selected tissues of mallard ducks (Anas platyrhynchos L.), in relation to where they were obtained and their sex, with regard to the human diet. The study was carried out on material obtained from mallard ducks from two study areas: the Siedlce hunting district and the Leszno hunting district. The research material was the breast and leg muscles of 28 mallards. The samples were frozen and stored at −20 °C. The fatty acid profiles in the biological samples were determined by selected ion recording (SIR). The results showed significantly (p < 0.05) lower average levels of saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) and significantly higher (p < 0.05) average levels of polyunsaturated fatty acids (PUFAs), n−6 PUFAs, and n−3 PUFAs in the breast muscles of the mallards obtained in the Siedlce hunting district. This in conjunction with the higher (p < 0.05) hypocholesterolaemic/hypercholesterolaemic index (h/H) in the leg muscles and lower (p < 0.05) atherogenic and thrombogenic indices (AI and TI) in the leg and breast muscles of mallards in the Siedlce hunting district indicate the higher health-promoting value of the meat of ducks from this region. The average n−6/n−3 PUFA ratio in the breast muscles was significantly (p < 0.05) higher in mallards obtained in the Leszno hunting district. Males of the species had a significantly (p < 0.05) higher average n−6/n−3 PUFA ratio in the breast muscles than females. The PUFA/SFA ratio was significantly (p < 0.05) higher in the leg muscles of the female mallards than in the males.

Section: Discussioncontrasting

confidence: 50%

Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

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Analysis of the Fatty Acid Profile of the Tissues of Hunted Mallard Ducks (Anas platyrhynchos L.) from Poland

Pietrzkiewicz

2022

Animals

Аграрная наука Евро-Северо-Востока

“…Содержание белка в зерне тритикале является одним из важных критериев качества, так как с ним связаны питательные и кормовые достоинства культуры [11, 12,13]. Сорта первого периода селекции этой культуры имели значительные дефекты зерновки, в связи с чем количество белка варьировало в широких пределах 11,7…22,5 % [14].…”

unclassified

Yield and protein content in grain of winter triticale collection samples

Ponomarev

Ponomareva

Mannapova

et al. 2021

The aim of the study is to characterize winter triticale samples by protein content in grain and productivity, to identify sources of high protein content and high grain yield for use in breeding process. Experimental work was carried out in the conditions of Tatarstan Republic in 2013-2017. The collection of 93 varieties of winter triticale of Russian selection, obtained from the Federal Research Center “All-Russian Institute of Plant Genetic Resources"(VIR) was evaluated in field trials. Wide genetic diversity of the studied gene pool was demonstrated by grain protein content (11.69...16.15 %) and grain yield (277...579 g/m2). Protein content and grain yield were mostly determined by the growing conditions – the factor “year” (58.1 % and 61.8 %, respectively), with a relatively small share of the factor “genotype” (23.9 % and 15.4 %, respectively). Significant variation in the values of the studied indicators, both by genotype and by year, was observed. There were identified 19 sources of high protein content in grain (over 14.5 %) and 17 sources of high grain yield (over 510 g/m2), which showed a significant excess of the standard Bashkirskaya korotkostebelnaya. A group of samples with a relatively high protein content (13.8 ... 14.1 %) and yield higher than the average value (450...500 g/m2) was identified. The highest breeding value among the sources of high yield was shown by samples Zimogor, Kornet, Privada, Vodoley, 3/9 oh Ag 4418, and among the sources of high protein content – Kurskaya stepnaya, Mir, Student, Svyatozar. The listed variety samples additionally possessed a complex of positive features: high ear productivity, high full-scale weight and large grains. In varieties Dokuchaevsky 8 and Privada there was noted a favorable combination of significantly high levels of yield (542 and 527 g/m2, respectively) and protein content in the grain (14.28 and 13.93 %, respectively). The finding of a reliable moderate negative correlation (r = -0.682) between yield and grain protein content indicates that grain protein content can be increased by breeding methods at relatively high or medium yields of varieties.

“…In turn, the replacement of vitamin D3 with calcitriol (active form of vitamin D -1.25-dihydroxycholecalciferol) resulted in higher phosphorus content and weight gain in males, as well as increases in magnesium and potassium content in muscles (18). These benefits prompted attempts to modify the pheasant diet composition to improve the quantity and quality of eggs, their hatchability and chemical composition, and their nutritional value (8,16,17,20,24,26,34,42,47).…”

mentioning

confidence: 99%

Effect of organic minerals and alpha-ketoglutarate in pheasant diet on performance, hatchability and the composition of eggs

Flis¹,

Gugała²

2021

Medycyna Weterynaryjna

This study determined the effect of supplementation of the pheasant diet with mineral components (Ca, Fe, Zn and Cu) from organic sources with or without the addition of alpha-ketoglutarate (AKG) on productivity, hatchability parameters, nutrients and mineral content in pheasant eggs. Studies were performed on three groups of laying pheasants, which were kept in aviaries and received a standard mixture (Group I, the control group), a mixture with Ca, Fe, Zn, and Cu glycinates which replaced 50% of the mineral components in inorganic form (Group II), or a mixture with chelates and a 200 mg alpha-ketoglutarate supplement (Group III). Supplementation of the diet with chelates raised the content level of the mineral components in the whole egg and yolk, mainly the contents of calcium, zinc and iron. The addition of 200 mg of alpha-ketoglutarate to the diet with calcium, zinc, iron and copper chelates of glycine (50% of the supplemented elements) resulted in improved laying capacity and rates of reproduction and rearing of chicks, with a slight decrease in the size and weight of eggs. The eggshell was thinner, and the albumen and the Haugh Unit score were higher. Inorganic mineral components can be replaced by glycine chelates at up to 50%, especially with the addition of 200 mg of AKG, in the pheasant diet in commercial breeding.