Wyniki wyszukiwania

1

Ecology of beef production

100%

Velde K. V.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Konferencje

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1996

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tom 12

2

Integration on the branded beef product-line

75%

Villanyi L., Peter B., Toth T., Nagy H.

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

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2002

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tom 04

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nr 3

Branded beef products are more and more sought in Europe. There have been attempts to spread and introduce branded meat in Hungary primarily on swine market. According to market forecasts, beef consumption is going to rise and its share in food consumption is going to have more significance. Beef is more prockly product than swine or poultry, EU requirements are also more strict, the registration system is well-organized and controlled.

3

A comparison of the growth and carcass traits between dairy and dairy x beef breed crossbred heifers reared for beef production

75%

Huuskonen A., Pesonen M., Kamarainen H., Kauppinen R.

Journal of Animal and Feed Sciences

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2013

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tom 22

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nr 3

The objective of the study was to determine beef production traits of dairy and dairy × beef breed crossbred heifers. The data from Finnish slaughterhouses included observations of 14 221 Nordic Red (NR), 6 348 Holstein-Friesian (Hol), 1 626 NR × Aberdeen Angus (NR × Ab), 1 136 NR × Blonde d’Aquitaine (NR × Ba), 802 NR × Charolais (NR × Ch), 487 NR × Hereford (NR × Hf), 3 699 NR × Limousin (NR × Li), 827 NR × Simmental (NR × Si), 531 Hol × Ab, 467 Hol × Ba, 438 Hol × Ch, 186 Hol × Hf, 1 249 Hol × Li and 393 Hol × Si heifers. Crossbreeding with late maturing beef breeds (Ba, Ch, Li, Si) had favourable effects both on daily carcass gain and carcass quality traits (conformation, proportion of high value joints) of the progeny when compared to purebred dairy heifers. No advantages in proportion of high value joints seemed to be obtained by crossbreeding dairy cows with Ab or Hf breeds, while the improvements in daily carcass gain and carcass conformation score were intermediate compared to the late maturing crossbreds.

4

Variability of beef chemical composition with regard to some factors determining it. I. Dry matter and ash content

75%

Litwinczuk A., Litwinczuk Z., Florek M., Barlowska J., Nowakowska J.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica

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1999

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tom 17

5

A cDNA macroarray resource for gene expression profiling in ruminant tissues involved in reproduction and production (milk and beef) traits

63%

Bernard C., Degrelle S., Ollier S., Campion E., Cassar-Malek I., Charpigny G., Dhorne-Pollet S., Hue I., Hocquette J.-F., Le Provost F., Leroux C., Piumi F., Rolland G., Uzbekova S., Zalachas E., Martin P.

Journal of Physiology and Pharmacology. Supplement

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2005

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tom 56

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nr 3

215-224

cDNA arrays have proven to be useful tools to screen gene expression in many animal species including livestock species. A collaborative program was launched to construct a ruminant cDNA collection, representative of three tissues: Muscle, Embryo and Mammary gland, named MEM. This collection gathers clones mainly arising from 3 non-normalised cDNA libraries: a directed bovine muscle library, a 14-day-old bovine embryo library and a goat lactating mammary library. It is made up of 1896 clones (637 muscle, 882 embryo and 377 mammary cDNAs), selected after sequencing and bioinformatic analyses. Amplification products yielded from these clones as well as controls were printed onto Nylon membranes to generate macroarrays. Hybridisation with relevant cDNA targets allowed checking the location of about 50 cDNAs and the specificity of each sub-set of the repertoire. Macroarrays were hybridised with radiolabelled cDNA complex targets from five different tissues (muscle, embryo, mammary gland, adipose tissue and oocyte). Both somatic and germinal complex targets gave valid hybridisation signals with 45 to 80% of the printed probes. This specific cDNA collection now provides a powerful tool for transcriptomic studies with the ultimate objective to better understand physiological and metabolic functions in ruminants. It will be subsequently included into a forthcoming larger collection.

6

Technical and economic effectiveness of fodders in high quality beef production

63%

Palasz L., Kamieniecki H., Wojcik J.

Electronic Journal of Polish Agricultural Universities. Series Economics

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2005

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tom 08

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nr 1

This paper presents the results of empirical research on high quality beef production on the basis of the Cooperative "Agrofirm" Witkowo (Stargard Szczeciński poviat) and the individual farm Wyszobór. The research had been conducted on young crossbreed beef bulls with different genotypes in relatively intensive feeding conditions. The aim of the paper was the cost calculation of fodders per 1 kg gain in body weight in different raising systems. The first experiment consisted of young bulls genetically mixed of two or three races between Black-and-White x Red Angus crossed cows and Limousin meat breed bulls- (group I), Red Angus (group II) and Salers (group III). The second experiment consisted of young bulls from, group I - Charolais cows with Charolais bulls, group II - Hereford cows with Charolais bulls and group III - Simmental cows with Charolais bulls. In both cases young bulls from all the groups had a very good daily gain. A lower cost of fattening was noticed for the animals from experiment no. 2, where the animals had been raised in a pasture system with cow-mothers and had been better prepared for fattening.

7

Comparison of beef production and meat quality of Holstein bulls fattened to a lower live weight in loose and tethered housing systems

63%

Chladek G., Dobicki A., Ingr I.

Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry

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2001

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tom 04

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nr 2

The experimental group consisted of 57 young Holstein bulls kept in the Czech Republic; 35 bulls were tethered and 22 bulls were loose housed. The aim of the study was to analyse and compare the effect of different housing systems on feedlot performance, carcass value and meat quality and their mutual relationship. The overall average values were as follows: feedlot performance parameters live weight at slaughter 434.3 kg, age at slaughter 455.8 days, total weight gain 319.3 kg, duration of fattening 342.1 days, daily weight gain 941 g; carcass value parameters dressing percentage 51.0%, net daily weight gain 482 g, weight and proportion of kidney fat 3.9 kg, 1.8% resp., weight and proportion of fat trim 2.2 kg and 2.0% resp.; meat quality parameters dry matter, fat and collagen content in muscle 23.8, 1.46 and 1.13% resp., pH24 6.08, drip loss 0.849% and remission (525 nm) 6.4%.

8

The effect of individual Charolais sires on beef production of their crossbred progeny

63%

Subrt J., Divis V.

Animal Science Papers and Reports. Supplement

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2002

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tom 20

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nr 1

9

A note on the effect of breed on beef cattle carcass traits

63%

Oprzadek J., Dymnicki E., Oprzadek A., Sloniewski K., Sakowski T., Reklewski Z.

Animal Science Papers and Reports

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2001

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tom 19

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nr 1

10

Transcriptomic index of skeletal muscle of beef breeds bulls

51%

Sadkowski T., Jank M., Zwierzchowski L., Oprzadek J., Motyl T.

Journal of Physiology and Pharmacology. Supplement

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2009

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tom 60

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nr 1

15-27

In the present study cDNA microarray (18263 probes) were used for analysis of bovine skeletal muscle (m.semitendinosus) transcriptome in 12-month-old bulls of four cattle breeds: Holstein-Friesian (HF), Limousine (LIM), Hereford (HER) and Polish Red (PR), aiming to identify the genes, which expression is common for beef breed bulls. The number of transcripts significantly different from HF bulls muscle amounted to 393, 462 and 638 for LIM, HER and PR, respectively. As a result of this study the transcriptomic index was proposed, being the set of 48 genes expressed similarly in beef breed bulls in comparison to HF bulls. Classification of genes according to molecular function of their protein products has shown the highest number of genes encoding proteins involved in nucleic acid binding (10), regulatory proteins (6), kinases (4) and signaling molecules (3). Classification according to biological processes revealed the highest number of genes involved in protein metabolism i modification (14), signal transduction (5), cell cycle (4), intracellular protein traffic (4), nucleoside, nucleotide and nucleic acid metabolism (4), apoptosis (3), cell structure and motility (3), and cellular transport (3). Since the role of the most genes included to the transcriptomic index has not been described yet in bovine skeletal muscle, obtained results may be very useful in revealing new candidate genes to search a new criteria of animal selection in beef production.

11

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Efficiency of dairy and beef cattle farms differing in land area size

51%

Komorowska D., Stolarska A.

Annals of the Polish Association of Agricultural and Agrobusiness Economists

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2022

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tom 24

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nr 2

12

Carcass and meat quality of Friesian, Piemontese x Friesian and Limousin x Friesian young bulls under intensive beef production system in Turkey

51%

Alcicek A., Onenc A., Gungor M.

Journal of Animal and Feed Sciences

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2003

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tom 12

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nr 2

13

Podlaskie province

51%

Polish Food

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2000

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nr 2

14

New polymorphism in the bovine STAT5A gene and its association with meat production traits in beef cattle

51%

Flisikowski K., Oprzadek J., Dymnicki E., Zwierzchowski L.

Animal Science Papers and Reports

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2003

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tom 21

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nr 3

STAT5 is a group of transcription factors that mediate signals from prolactin and growth hormone. Therefore, STAT5A gene is a candidate marker for quantitative traits in farm animals. In this study the new nucleotide sequence polymorphism was found in the coding region of the bovine STAT5A gene - substitution C→T at position 6853 within the exon 7. As this mutation creates new AvaI/DdeI restriction site it could be easily detected with PCR-RFLP analysis. The RFLP-AvaI polymorphism was studied in cattle (n = 146) belonging to eight breeds, including two considered as Polish native. The overall frequencies of alleles C and T were 0.82 and 0.18, respectively.The genotype TT was found exclusively in both native breeds (Polish Red and White-Back).Moreover, for the first time an association was reported between STAT5A gene polymorphism and beef production traits in cattle (n = 71). In the animals of the CC genotype the live body weight at the age of 9 and 15 months, live weight gain (0-15 months), dressing percentage and four carcass traits were found more favourable than in CT animals. Individuals CC used less feed for maintenance and meat production.

15

Flexibility - success in agriculture

51%

Radzewicz A.

Polish Food

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2005

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nr 3

16

The concept of sustainable agriculture

45%

Lantinga E. A., Oomen G. J. M., Schiere H. B.

Pamiętnik Puławski

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2000

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tom 120

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nr 1

Ograniczanie wyników

Ecology of beef production

Integration on the branded beef product-line

A comparison of the growth and carcass traits between dairy and dairy x beef breed crossbred heifers reared for beef production

Variability of beef chemical composition with regard to some factors determining it. I. Dry matter and ash content

A cDNA macroarray resource for gene expression profiling in ruminant tissues involved in reproduction and production (milk and beef) traits

Technical and economic effectiveness of fodders in high quality beef production

Comparison of beef production and meat quality of Holstein bulls fattened to a lower live weight in loose and tethered housing systems

The effect of individual Charolais sires on beef production of their crossbred progeny

A note on the effect of breed on beef cattle carcass traits

Transcriptomic index of skeletal muscle of beef breeds bulls

Efficiency of dairy and beef cattle farms differing in land area size

Carcass and meat quality of Friesian, Piemontese x Friesian and Limousin x Friesian young bulls under intensive beef production system in Turkey

Podlaskie province

New polymorphism in the bovine STAT5A gene and its association with meat production traits in beef cattle

Flexibility - success in agriculture

The concept of sustainable agriculture