Wyniki wyszukiwania - Biblioteka Nauki

1

Base line information on Nutritional profiling of genetically modified forages. A Review

100%

Beriso Y.

World News of Natural Sciences

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2023

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tom 51

49-60

EN

The productivity of animal agriculture in developing countries will need to be substantially increased in order to satisfy increasing consumer demand, to more efficiently utilize scarce resources and to generate income for a growing agricultural population. Biotechnology has the potential to improve the productivity of animals via increasing in growth, carcass quality and reproduction, improved nutritional quality, safety of food, improved health and welfare of animals and reduced waste through more efficient utilization Agricultural biotechnology is one area of application of biotechnology involving applications to agriculture and the application has long been source of innovation in production and processing, extremely impacting the sector. Agricultural biotechnology has been practiced for a long time, as people have sought to improve agriculturally important organisms by selection and breeding. This includes plant breeding to raise and stabilize yields; to improve resistance to pests, diseases and abiotic stresses such as drought and cold; and to enhance the nutritional content of foods. Biotechnology is being used to develop low-cost disease-free planting materials for crops such as cassava, banana and potato and is creating new tools for the diagnosis and treatment of plant and animal diseases and for the measurement and conservation of genetic resources. Modern biotechnology has the potential to provide new opportunities for achieving enhanced livestock productivity in a way that alleviates poverty, improves food security and nutrition and promotes sustainable use of natural resources. The major cause of poor livestock productivity in tropical regions of the world is inadequate nutrition. Low-quality forages are a major component of ruminant diets in the tropics. The lack of quality of ruminant feeds is caused by a high content of lignified crop residues and mature grasses, usually associated with a low content of nitrogen, phosphorus and sulfur. The shortage of feed in most developing countries and the increasing cost of feed ingredients mean that there is a need to improve feed utilization. Animal feeds and feeding practices are being changed by biotechnology to improve animal nutrition and to reduce environmental waste. The ultimate goal of using biotechnology in animal nutrition is to improve the plane of nutrition through the use of enzymes to improve the availability of nutrients from feed and to reduce the wastage of the feed.

2

Neuropeptide Y - a neuromodulatory link between nutrition and reproduction at the central nervous system level

88%

Wojcik-Gladysz A. , Polkowska J.

Reproductive Biology

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2006

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tom 06

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nr Suppl.2

3

Efficiency of peas in broiler chicken feeding

88%

Janocha A. , Milczarek A. , Gluchowska J.

Animal Science and Genetics

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2022

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tom 18

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nr 1

4

The use of herbs in animal nutrition

88%

Paskudska A. , Kolodziejczyk D. , Socha S.

Acta Scientiarum Polonorum. Zootechnica

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2018

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tom 17

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nr 2

5

The effect of extrusion cooking and storage time on the stability of vitamin C

88%

Adamski K. , Kruczynska H.

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2003

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nr 2

6

Studies on N-metabolism in different gastrointestinal sections of sheep using the digesta exchange technique. 1. Model and experimental conditions

88%

Sandek A. , Krawielitzki K. , Kowalczyk J. , Kreienbring F. , Gabel M. , Zebrowska T. , Voigt J.

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nr 3

7

Nutritive value and quality of galega [Galega orientalis Lam.] silages

88%

Skorko-Sajko H. , Tywonczuk J. , Minakowski D. , Sajko J.

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2003

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nr 2

8

Comparison of feed utilization in broiler chickens of various origin

88%

Makowska M. , Michalik D.

Polish Journal of Natural Sciences

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2003

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tom 14

9

The effect of pure saturated fatty acids on cholesterol and triacylglycerol level in rats

88%

Hanczakowski P. , Szymczyk B. , Szczurek W.

Annals of Animal Science

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2004

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tom 04

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nr 1

10

The effect of ad libitum and quantitatively restricted feeding on bone breaking strength in chickens

88%

Szeremeta J. , Wawro K. , Majewska K. , Kleczek K.

Polish Journal of Natural Sciences

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2003

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tom 14

11

Prediction of the nutritive value of wet whole-crop sorghum silage according to the INRA feeding system by near-infrared spectroscopy

75%

Kanski J. , Pys J. B. , Gorka P.

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2013

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tom 22

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nr 4

EN

The aim of the study was to determine the usefulness of near-infrared spectroscopy (NIRS) for direct estimation of energy, protein and fillunits as well as organic matter digestibility (OMD) for wet whole-crop sorghum silages according to the French feeding system for ruminants INRA (1988). Fifty-eight whole-crop sorghum silages ensiled alone or with the addition of wheat bran, rapeseed meal, or whole-crop maize were used to create a calibration data set. Wet samples of silage were scanned using a spectrophotometer (570–1850 nm). The spectral data were transformed to the first derivative. For scatter correction, standard normal variate and detrending methods were used. The calibration equations were developed using modified partial least squares regression.The accuracy of each equation was evaluated based on the coefficient of determination of calibration (R2 ), standard error of calibration, and standard error of cross validation (SECV). High R2 (> 0.93) were shown for all parameters except OMD (R2 = 0.83).The highest SECV (0.62) was observed for protein units, but all errors were within acceptable values. The results of the study suggest that NIRS may be used for direct prediction of nutritive value of sorghum silages in INRA system units. Furthermore, these results suggest that the NIRS technique may be successfully used for direct estimation of feed units for ruminants in wet silages.

12

Effect of goats nutrition on milk yield, its chemical composition and fatty acid profile of fat

75%

Klebaniuk R. , Kowalczuk E. , Kochman G. , Patkowski K. , Lechtanska M.

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2008

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tom 26

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nr 4

1-9

13

Effectiveness of mixtures with the Fabaceae seeds in broiler chicken feeding

75%

Osek M. , Milczarek A. , Klocek B. , Turyk Z. , Jakubowska K.

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nr 4

14

Wykorzystanie sruty z pszenzyta w zywieniu swin

75%

Mroczek J. R.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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2006

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nr 07-08

16

15

Ocena fizjologiczna zastosowania chelatów żelazowych w żywieniu zwierząt

75%

Kupczyński R. , Szołtysik M. , Dąbrowska A. , Śpitalniak K. , Budny-Walczak A. , Budzińska K.

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tom T. 95, nr 8

1607--1610

PL

Dokonano oceny fizjologicznej zastosowania chelatu żelaza jako dodatku do preparatu mlekozastępczego lub mleka pełnego w żywieniu cieląt. Badania wykonano na 40 cielętach rasy holsztyńsko-fryzyjskiej, uwzględniając podział na 4 grupy: żywione preparatem mlekozastępczym lub mlekiem pełnym oraz analogiczne grupy otrzymujące chelat żelaza. Najwyższe stężenie Fe we krwi stwierdzono po zastosowaniu dodatku chelatu do mleka pełnego. Wyższe stężenie Fe we krwi cieląt występowało po suplementacji chelatu do preparatu mlekozastępczego w porównaniu z grupą żywioną standardowym preparatem mlekozastępczym. Stężenia transferyny i stopień wysycenia transferyny żelazem były najwyższe w grupie żywionej preparatem mlekozastępczym z dodatkiem chelatu. Dodatek 1% suchej masy chelatu żelaza korzystnie wpłynął na parametry gospodarki żelazowej cieląt, jednak w praktyce stosowanie tego dodatku wymaga uwzględnienia zawartości żelaza w całości diety.

EN

A Fe chelate was prepd. by complexation of FeCl₂ with a casein hydrolyzate and added to a milk replacer or to whole milk used for nutrition of 40 Holstein-Friesian calves. The highest concn. of Fe in the blood of calves was found after addn. of the chelate to whole milk and after supplementation of the chelate to a milk replacer. The concens. of transferrin and transferrin saturation with Fe were the highest after addn. of the chelate to milk replacer. The additive was responsible for the Fe content in the calve diet.

16

Application of weighted goal programming in the optimization of rations for sport horses

75%

Prisenk J. , Pazek K. , Rozman C. , Turk J. , Janzekovic M. , Borec A.

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2013

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tom 22

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nr 4

EN

The objective of this study was to develop a model to assess economical and balanced feed rations for sport horses. It was based on nonparametric modelling with a combination of linear programming and a multiobjective optimization technique: weighted goal programming. The method incorporates multiple goals into optimization. The technical data presented the feed nutritional value (dry matter, metabolizable energy, metabolizable protein, etc.) and nutritional requirements, which were represented in weighted goal programming as targets. The model was tested for optimization of winter and summer feed rations, where summer feed rations are more expensive but more balanced. Optimization results show that the method of weighted goal programming is more accurate and useful in practice compared with linear programming, where only one goal (economically optimal feed rationing) is taken into account.

17

Dietary supplementation of probiotics in poultry exposed to heat stress - a review

75%

Sugiharto S. , Yudiarti T. , Isroli I. , Widiastuti E. , Kusumanti E.

Annals of Animal Science

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2017

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tom 17

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nr 3

18

Improved performance due to dietary supplementation with selected herbal extracts of broiler chickens infected with Eimeria spp.

75%

Arczewska-Wlosek A. , Swiatkiewicz S.

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nr 3

EN

The aim of the study was to investigate the effect of dietary herbal extracts derived from garlic (Allium sativum), rosemary (Rosmarinus officinalis), sage (Salvia officinalis), oregano (Origanum vulgare), nettle (Urtica dioica), purple coneflower (Echinacea purpurea), or thyme (Thymus vulgaris) on the performance indices and oocyst output in broilers experimentally infected with 190 000 oocysts of Eimeria spp. on day 12 of age. A total of 400 one-day-old Ross 308 broiler chicks was randomly allocated into 10 groups with 5 replicates (cages) of 8 chickens per replicate. Two of the groups, one challenged and the other not, were given a basal maize-soyabean meal diet without any additives; one of the challenged groups was administered a basal diet with the coccidiostat diclazuril (1 mg · kg−1) and the remaining birds of the infected groups were given a diet supplemented with one of the tested herbal extracts at a level of 750 mg · kg−1. Throughout the 42 days of the experiment, performance parameters, mortality, oocyst output, and slaughter indices were recorded. Among the tested herbal extracts, in the first rearing period (9 d post infection), only garlic and sage extracts alleviated the negative effect of infection, as shown by the increase in body weight gain to the level recorded in the coccidiostat-supplemented group and, in the case of garlic extract, by lower mortality. In the second and entire experimental period, dietary supplementation with the herbal extracts improved the growth performance of infected chickens to the level obtained in the groups infected and fed the coccidiostat or the uninfected and unsupplemented ones, but there was no positive effect of extracts on oocyst output. It is concluded that the herbal extracts tested in the current study do not prevent coccidiosis induced by high-pathogenic field Eimeria spp., although they have a beneficial effect on recovery after infection, which was expressed by the favourable impact on compensatory growth and, thus, on the final performance indices.

19

Cost analysis of feed production and feeding of beef cattle on the example of a selected private farm

75%

Piszcz H. , Piotrowski S. , Milczarek A.

Acta Scientiarum Polonorum. Zootechnica

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2022

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tom 21

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nr 1

20

The effect of fibre level in the mixture on the state of intestinal epithelium of fatteners

75%

Rekiel A. , Wiecek J. , Cichowicz M. , Bielecki W. , Wieszczy P.

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2014

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tom 53

EN

The purpose of the work was to determine the effect of the fi bre content in the mixture on morphometric traits of intestinal epithelium of fatteners. In one-phase fattening, 14 crossbred pigs were classifi ed into two groups and ad libitum fed the mixtures, differing in the composition and nutritional value, including the level of crude fi bre (control group – C – 3.4%; experimental group – E – 12%) but with the maintained energy-protein ratio (1 : 13). At the age of 180 days, the fattening was completed; the weight of the pigs from C group was equal to ca. 100 kg and that one of the pigs from group E was by ca. 26 kg lower. The rate of growth of pigs from group E as compared to the animals from group C was slower (P ≤ 0.01). After slaughter, morphometric evaluation of the scrapes from the following three segments of the small intestine was carried out: duodenum, jejunum and ileum. There was found a lower mitosis index (the number of divisions per one crypt) of the intestinal epithelium cells of the pigs from group E as compared to group C (duodenum, P ≤ 0.01). The height of the epithelial cells in crypts and depth of crypts in three examined segments of small intestine (D, J, I) was higher in group E vs. group C (P ≤ 0.05; P ≤ 0.01), whereas the villus height was lower in group E vs. group C. The fi bre level in the mixture affected the direction and level of changes in the examined indicators, characterizing the morphometric traits of intestinal epithelium.

PL

Wpływ poziomu włókna w mieszance na stan nabłonka jelit tuczników. Celem pracy było określenie wpływu zawartości włókna w mieszance na cechy morfometryczne nabłonka jelit tuczników. W tuczu jednofazowym, 14 świń mieszańców podzielono na dwie grupy i żywiono do woli mieszankami różniącymi się składem i wartością pokarmową, w tym zawartością włókna surowego (grupa kontrolna – C – 3,4%, grupa doświadczalna – E – 12%), ale o zachowanym stosunku energetyczno-białkowym (1 : 13). W wieku 180 dni zakończono tucz; świnie z grupy C ważyły ok. 100 kg, a z grupy E o ok. 26 kg mniej. Tempo wzrostu świń z grupy E w porównaniu z grupą C było wolniejsze (P ≤ 0,01). Poubojowo dokonano oceny morfometrycznej skrawków trzech odcinków jelita cienkiego: dwunastnicy, jelita czczego i jelita biodrowego. Stwierdzono niższy indeks mitotyczny (liczba podziałów na 1 kryptę) komórek nabłonka jelit świń (dwunastnica, P ≤ 0,01) otrzymujących mieszankę o dużej zawartości włókna (grupa E) w porównaniu z grupą otrzymującą jego standardową zawartość w paszy (grupa C). Wysokość komórek nabłonka w kryptach i głębokość krypt w trzech badanych odcinkach jelita cienkiego (dwunastnica, jelito czcze i jelito biodrowe) miały większe wartości w grupie E w porównaniu z grupą C (P ≤ 0,05; P ≤ 0,01), a wysokość kosmków mniejszą. Poziom włókna w mieszance wpłynął na kierunek i poziom zmian badanych wskaźników charakteryzujących cechy morfometryczne nabłonka jelit.