Semi-Intensive Fattening Suitability and Slaughter Value of Young Bulls of Three Polish Native Breeds in Comparison With Polish Holstein-Friesian and Simmental

Abstract

an evaluation was conducted of the suitability for fattening in a semi-intensive system (mainly with fodders from permanent grassland) and the slaughter value of 15 young bulls of the Polish red (Pr) breed and 10 each of the white-backed (wb) and Polish black-and-white (bw) breeds. the reference group consisted of young bulls of the black-and-white variety of the Polish holstein-friesian (hf) breed and the Simmental (Sim) breed, fattened on the same farms. control fattening was carried out until the age of 18 months. mean daily weight gain in the bulls of the native breeds during the control fattening period (which lasted 314-358 days) was 0.9 kg, similarly to HF, but significantly lower (P≤0.05) than in the Simmentals (986 g). during the entire fattening period, i.e. from birth to the age of 18 months, daily weight gain was 832 g in Pr and 889-919 g in WB and BW. dressing percentage was lowest in PR bulls (51.69%), and higher in WB (53.1%) and BW (53.49%), with values similar to the reference group, i.e. young bulls of the Simmental (52.97%) and HF (53.29%) breeds. the difference between PR and BW (1.8%) and HF (1.6%) was statistically significant (P≤0.05). in the eUROP classification system, the carcasses of the young bulls of the native breeds were most often placed in classes r -and o + (conformation) and 2 + and 3 -(fat cover), as in the case of young hf bulls. carcasses of young Simmental bulls were assigned to much higher classes. the young bulls of the three Polish native breeds evaluated are good material for fattening in a semi-intensive system (mainly with fodder from permanent grasslands), while the young Pr bulls were the least suitable.

Comparative Analysis of the Liver Transcriptome among Cattle Breeds Using RNA-seq

“…A comparison of transcriptome of taurine ( Bos taurus ) breeds provides not only a high-resolution survey of the gene expression variation at different levels, but also provides important biological insights into the phenotypic differentiation among cattle breeds [3]. In Poland, the Polish-Red and Polish Holstein-Friesian (Polish-HF) are the two native taurine breed reared in active breeding population [4]. The Polish-HF is characterized as dairy breed, while Polish-Red is characterized as dual purpose [5].…”

“…The Polish-HF is characterized as dairy breed, while Polish-Red is characterized as dual purpose [5]. Both native breeds are used for the beef purpose in Poland, as in many countries of Central Europe [4,6]. In recent studies, it has been well documented that gene expression of different bovine transcriptome, such as Longissimus thoracis [7], blastocysts [8,9], liver [10,11,12,13,14,15], mammary gland [16], adipose tissue [17], horn cancer [18], milk fat globule [19], and subcutaneous adipose tissue [20], varies among cattle breeds.…”

Comparison of meat quality of the Polish Red-and-White and Simmental young bulls

“…Researchers in many countries have worked on modifying the health-promoting properties through nutrition, management or the use of prolonged fattening (Sargentini et al 2010 -Maremmana breed), or the physicochemical and organoleptic properties (Marino et al 2014 -Podolian breed). In recent years, novel research has been done on dairy performance and milk quality (Litwińczuk et al 2012, Adamska et al 2014, and fattening capacity and meat quality of conservation breeds, mainly the White-backed and Polish Red (Litwińczuk et al 2014a, Litwińczuk et al 2014b, Dymnicki et al 2014.…”

Evaluation of the Mineral Concentration in Beef from Polish Native Cattle

“…All four of the Polish native cattle breeds (Polish Red, White-Backed, Polish Black-and White and Polish Red-and-White) are kept on low-input farms where livestock is raised extensively, i.e. pastured in the summer and fed on-farm fodder (silage and hay) in the winter [ 7 ]. This type of production system is a key factor determining the high nutritional value of the meat obtained [ 8 ].…”