Esmer ve Şarole x Esmer Danaların Besi Performansı ve Karkas Özellikleri / Fattening Performance and Carcass Features of Brown Swiss and Charolais x Brown Swiss calves

OZET : Bu arastirma Esmer ve Şarole x Esmer danalarin besi performansi ve karkas ozelliklerinin karsilastirilmasi amaciyla yapilmistir. Arastirmada 10 bas Esmer (Esmer) ve 11 bas Şarole x Esmer (Melez) dana 196 gun sure ile besiye alinmislar, besi performanslarinin belirlenmesinden sonra her gruptan dorder tanesinin kesilmesi ile karkas ozellikleri bakimindan karsilastirilmislardir. Besi basi agirligi, besi sonu agirligi, toplam canli agirlik artisi, gunluk canli agirlik artisi Esmerler icin sirasiyla 160.10±4.05, 333.50±9.17, 173.40±9.94, 0.885±0.05 kg ve Melezler icin 156.09±7.81, 342.55±12.73, 186.46±9.09, 0.951±0.05 kg’ dir. Beside Esmerler gunde ortalama 1.948±0.03 kg kaba, 4.411±0.10 kg kesif yem tuketmisler, yemden yararlanma oranlari 7.359±0.34 kg/kg olarak bulunmustur. Melezlerde ise bu degerler sirasiyla 1.876±0.03 kg, 4.399±0.17 kg ve 6.704±0.26 kg/kg olarak saptanmistir. Esmerlerin kesim oncesi canli agirliklari, nakliye firesi, sicak ve soguk karkas agirliklari ile sicak ve soguk randimanlari sirasiyla 324.00±3.56 kg, % 2.7±0.27, 179.70±2.86 kg, 173.50±2.83 kg, % 55.46±0.56, % 53.55±0.47; Melezlerinki ayni sira ile 342.00±16.15 kg, % 1.88±0.16, 190.15±10.45 kg, 185.35±9.79 kg, % 55.56±1.18, % 54.17±1.06 olarak saptanmistir. Karkaslarda on ceyrek, arka ceyrek, MLD (belgozu kasi) alani, kabuk yagi kalinligi, % BPK yagi (Bobrek, Pelvis, Kalp bolgesi), Marbling Skor (mozaiklesme derecesi), Yield Grade (et verimi siniflari) ve % Retail Cuts ( % perakende parcalar) Esmerler icin sirasiyla 43.83±1.52 kg, 42.93±1.28 kg, 64.73±4.86 cm2, 0.29±0.06 cm, % 3.02±0.52, 3 (trace), 1.69±0.28, % 52.97±0.67 olarak Melezler icin ayni sira ile 46.39±3.06 kg, 46.20±1.90 kg, 72.41±2.69 cm2, 0.39±0.04 cm, % 1.74±0.10, 3 (trace), 1.24±0.05, % 54.05±0.12 olarak bulunmustur. Genotip gruplar arasinda olculen tum ozelliklere ait farkliliklar istatistiksel olarak onemsiz bulunmustur (P>0.05). Anahtar kelimeler: Besi performansi, karkas ozellikleri, Esmer, Şarole Fattening Performance and Carcass Features of Brown Swiss and Charolais x Brown Swiss calves ABSTRACT : This research was conducted in order to compare fattening performance and carcass features of Brown Swiss and Charolais x Brown Swiss cattle. In this study 10 Brown Swiss and 11 Charolais x Brown Swiss cattle were fed for 196 days and compared by their total and daily gains in weight, body measurements and feed consumptions. Initial, final weights and total, daily gains in weight determined for Brown Swiss cattle as 160.10±4.05, 333.50±9.18, 173.40±9.94, 0.885±0.05 kg and Charolais x Brown Swiss’ as 156.09±7.81, 342.55±12.73, 186.46±9.09, 0.951±0.05 kg respectively. In the fattening period, Brown Swiss cattle consumed 1.948±0.03 kg hay, 4.411±0.10 kg concentrate feed per a day and feed efficiency was determined as 7.359±0.34 kg/kg. Same values for Charolais x Brown Swiss cattle were observed as 1.876±0.03 kg, 4.399±0.17 kg and 6.704±0.26 kg/kg respectively. Slaughtered weights, trasport shrinkage, hot and chilled carcass weights, dressing percentages were found for Brown Swiss cattle as 324.00±3.56 kg, 2.70±0.27 %, 179.70±2.86 kg, 173.50±2.83 kg, 55.46±0.56 %, 53.55±0.47 %, same values of Charolais x Brown Swiss crosses were determined as 342.00±16.15 kg, 1.88±0.16 %, 190.15±10.45 kg, 185.35±9.79 kg, 55.56±1.18 %, 54.17±1.06 %, respectively. For Brown Swiss cattle carcasses, values for forequarters, hindquarters, MLD area, percentage of KPH fat (Kidney, Pelvic, Heart), Marbling Score, Retail Cuts were defined as 43.83±1.52 kg, 42.93±1.28 kg, 64.73±4.86 cm2, 0.29±0.06 cm, 3.02±0.52 %, 3 (trace), 1.69±0.28, 52.97±0.67 %. Same traits for Charolais x Brown Swiss cattles were found as 46.39±3.06 kg, 46.20±1.9 kg, 72.41±2.69 cm2, 0.39±0.04 cm, 1.74±0.10 %, 3 (trace), 1.24±0.05, 54.05±0.12 %, respectively. The differences between the traits which were determined for genotypes groups were found to be statistically insignificant (P>0.05). Key Words: Fattening performance, carcass characteristics, Brown Swiss, Charolais.