Browsing by Author "Erol, Halil"

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
  • No Thumbnail Available
    Item
    Erkek ve kastre ankara keçisi oğlaklarında farklı kesim ağırlıklarında besi performansı, kesim, karkas ve bazı et kalite özellikleri
    (Sağlık Bilimleri Enstitüsü, 2015) Erol, Halil; Ünal, Necmettin; Tıp
    Fattening Performance, Slaughter and Carcass Traits and Some Meat Quality Traits at Different Slaughter Weights of Male and Castrated Angora Goat Kids The purposes of this research were to investigate the fattening performance, slaughter and carcass traits and some meat quality of male and castrated Angora goat kids slaughtered at different slaughter weights. Data were collected from 96 kids, 48 male and 48 castrated, born single, approximately live weight of 15 kg. The research was conducted at Lives. Ce. R. I., in Lalahan-Ankara-Turkey, between 2013-2014 years. Castration process was practised by burdizzo pens under local anesthesia at 75 days after birth. Feeding during fattening period was consisted of a concentrate mixture (crude protein 16,50%, 2680 kcal / kg DM Metabolic Energy) available ad libitum and 200 g of roughage (mixture with coarsely chopped alfalfa and barley hay) per kids per day. When kids reach at 20, 25 and 30 kg, 8 kids of each slaughter weight were slaughtered for determining of slaughter, carcass and meat quality traits. The fattening performance data in males and castrated males kids for fattening periods (fattening starting-20; 20-25; 25-30 kg) were 65,02; 42,60; 40,40 and 78,12; 50,68 and 46,35 days in fattening duration; 74,94; 119,15; 142,40 and 68,79; 105,51 and 125,48 g for daily weight gain; 6,07; 5,38; 5,45 and 6,70; 6,19; 6,03 kg concentrate feed intake / 1 kg body weight gain, respectively. In each slaughter weight group (20, 25 and 30 kg), dressing percentages calculated based on body weight were 41,05; 44,40; 45,53 (P<0,01) and 39,66; 44,68; 46,28% (P<0,01); chilled dressing percentages were 39,65; 43,18; 44,80 (P<0,01) and 38,24; 43,63; 45,23% (P<0,001); rates of lean on whole carcass were 58,35; 60,81; 60,93 (P<0,05) and 56,13; 57,88; 58,17% (P<0,05); rates of fat on carcass were 16,91; 16,79; 18,96 (P<0,05) and 19,30; 20,88; 22,30% (P<0,05); rates of bone on carcass were 22,49; 19,96; 17,72 (P<0,001) and 21,97; 18,34; 16,93% (P<0,001); rates of shoulder on carcass were 21,74; 21,16; 20,16 (P<0,01) and 21,05; 20,11; 20,08% (P<0,05); rates of long leg on carcass were 31,23; 30,79; 31,67 and 31,33; 31,84; 31,79%; rates of ribs on carcass were 26,67; 27,78; 26,47 and 26,93; 27,39; 27,27%; rates of flank on carcass were 11,99; 1,10; 12,21 and 11,84; 11,41; 12,60%; rates of neck on carcass were 8,36; 9,17; 9,51 (P<0,05) and 8,85; 9,27; 8,26% (P<0,05); rates on carcass meat/bone 2,60; 3,07; 3,45 (P<0,001) and 2,56; 3,16; 3,41(P<0,001); rates on carcass meat/fat 3,46; 3,63; 3,25 (P<0,05) and 2,92; 2,79; 2,63; loin eye areas were 7,68; 9,52; 12,02 and 7,39; 8,97; 11,83 cm2 and rates of kidney - pelvis fat on carcass were 2,32; 2,92; 4,30 (P<0,05) and 3,94; 3,84; 4,33% males and castrated males, respectively. Meat quality traits on each slaughter weight group were ascertained that pH of LD muscle at 24th hours after slaughter time were 5,79; 5,78; 5,76 and 5,78; 5,81 and 5,77; rates of L* 47,44; 44,02; 43,48 (P<0,05) and 47,14; 43,86; 42,45 (P<0,05); rates of a* 15,53; 15,90; 16,33 and 15,18; 16,40; 17,93 (P<0,05); rates of b* 8,26; 7,54; 8,04 and 7,54; 8,70; 8,73 (P<0,05); shear force values were 5,49; 6,21; 6,44 and 5,76; 5,99; 6,46 kg/cm2; water holding capacities on 24th hours after slaughter were 6,05; 6,13; 6,25 and 5,90; 5,94 and 6,19%; cooking losses on 24th hours after slaughter were 31,44; 32,26; 34,68 (P<0,05) and 31,81; 33,08; 34,73% (P<0,05); dry matter were 21,38; 22,24; 22,98 and 21,40; 23,97; 24,94%; crude protein were 19,09; 19,38; 20,18 (P<0,05) and 19,28; 19,94; 20,89%; intramuscular fat contents were 1,31; 1,81; 1,86 (P<0,05) and 1,33; 2,40; 2,55% (P<0,001); rates of SFA were 46,93; 42,79; 43,08 (P<0,05) and 45,84; 40,15; 40,62% (P<0,001); rates of UFA 50,93; 54,02; 53,56 and 51,12; 56,47; 56,75% (P<0,001); MUFA were 47,91; 49,63; 49,62 and 47,73; 52,39 52,46% (P<0,001); rates of PUFA were 3,02; 4,39; 3,94 (P<0,05) and 3,39; 4,08; 4,29%; rates of PUFA/SFA were 0,06; 0,10; 0,09 (P<0,01) and 0,07; 0,10; 0,11 (P<0,05); rates of UFA/SFA were 1,09; 1,27; 1,26 (P<0,05) and 1,12; 1,39; 1,40 (P<0,001); ɷ6/ɷ3 fatty acids were 5,22; 6,18; 5,64 and 5,53; 6,53; 6,64; nutritive value were 3,01; 2,83; 2,71 and 2,62; 2,95; 2,73 (P<0,05); rates of digestible fatty acids were 71,10; 70,50; 69,44 and 68,33; 70,97; 70,26% (P<0,05) and cholesterol values were 78,17; 80,94; 83,24 and 81,91; 82,71; 84,11 mg / 100 g meat, males and castrated males at 20, 25 and 30 kg slaughter weights, respectively. In conclusion, fattening performance and slaughter and carcass and meat quality traits of Angora goat kids were found to be similar or slightly lower compare to other indigenous goats. In generally, castration of male kids had the effect of reducing on the fattening performance, but increasing on the carcass fat while no effects on slaughter and carcass traits except for head percentage. The investigated traits in both males and castrated males were affected with increasing live weights.
  • No Thumbnail Available
    Item
  • No Thumbnail Available
    Item
    Investigating various performance traits of Karakul sheep
    (Ankara Üniversitesi, 2020-03-03) Erol, Halil; Özbeyaz, Ceyhan; Ünal, Necmettin; Veteriner Fakültesi
    Karakul sheep in Turkey is an endangered breed according to the total number of ewes. Two herds of Karakul sheep in Tokat Province, reared similar environmental conditions, kept in situ in vivo conservation as a gene resource. This study aimed to determine various performance traits of Karakul sheep reared in breeder conditions as a gene resource. Least squares means for lambing rate (LR), litter size (LS) and lamb production (LP) were found 95.8±0.60%, 1.04±0.01 and 100.0±0.80%, respectively. It was determined that farm and age had significant effect on LR and LP, while farm and year had significant impact on LS. Survival rate in lambs were found 95.2 and 94.1%, respectively on 90th and 180th days. Means of least squares for live weights of lambs at birth and on 90th and 180th days were identified as 3.35±0.02, 21.52±0.27 and 30.34±0.32 kg, respectively. Live weight after shearing and greasy fleece weight values were 40.73±0.12 and 2.04±0.01 kg for females and 62.65±0.53 and 3.48±0.06 kg for males. Lactation milk yield (LMY) was 104.85±3.73 kg in ewes and lactation duration was 159.01±1.70 days. LMY was affected by the lactation number and farm while lactation duration was affected by lactation number. Results revealed that various performance traits of Karakul sheep conserved in breeder conditions were similar to or better than those previously reported for this breed. Also, the breed is similar to medium size native sheep breeds in terms of growth and mature live weight.