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Seker H.,Kucukcekmece District Food Agriculture and Husbandry Office | Yazici A.,Eastern Anatolian Agricultural Research Institute | Uysal P.,Eastern Anatolian Agricultural Research Institute
Turkish Journal of Agriculture and Forestry | Year: 2014

Orchardgrass (Dactylis glomerata L.) genotypes from different natural sources in the Eastern Anatolian Region of Turkey were clonally evaluated to study genetic variation and the relationships between seed yield and its components using a randomized complete block design. Results showed very significant genotypic variances among genotypes for all traits, including agronomic (seed, dry matter, and biological yields), morphological (plant height; panicle length; crown diameter; numbers of fertile, sterile, and total stems; and stem intensity), physiological (percent fertile stems, harvest and fertility indexes), and phenological (heading and anthesis dates) traits, as well as genotype × year interaction variances. Genotypic components were the main contributor to phenotypic variation of all traits (except physiologic traits, stem intensity, and number of sterile stems), resulting in high broad-sense heritability (>50%). Agromorphological and physiological traits had greater phenotypic (PCV), genotypic (GCV), and environmental coefficients of variation, while these were lower for phenological traits. After the phenological traits, plant height, crown diameter, and panicle length were the least variable traits, while stem intensity and fertility index were highly variable. Heritability estimates increased as GCV values approached PCV values. Expected genetic gain greatly increased as heritability estimates and PCV both increased, rather than heritability values alone. The first 5 principle components accounted for 84.90% of total variance. All agromorphological traits (except number of sterile stems) and fertile stem percentage were primary sources of variation of the PC1 axis, while harvest and fertility indexes were for PC2. Out of the 4 clusters, genotypes in cluster 4 of higher seed yield were faster in aboveground biomass accumulation. They also had the best agromorphological traits coupled with early maturity. Seed yield greatly increased as aerial biomass increased without any change in harvest index, but there was a significant decrease in fertility index. It was concluded that selection for dry matter yield could result in a simultaneous increase in seed yield. © TÜBİTAK. Source


Yuksel S.,Eastern Anatolian Agricultural Research Institute | Turgut L.,Ataturk University | Yanar M.,Ataturk University | Aksu M.,Ataturk University | And 2 more authors.
Bulgarian Journal of Agricultural Science | Year: 2011

The main purpose of this work is to determine meat quality attributes in 3 muscles of the Holstein Friesian bulls fed diets containing varied proportions of wet sugar beet pulp (SBP) and wheat straw. The 15 young bulls were divided into three diet groups. The control group was offered a mixture of wheat straw, dry alfalfa hay and dry meadow hay as roughage. The second and third diet groups were fed a similar mixture of roughage partially substituting wheat straw with wet SBP at levels of 4 % and 8% on a dry matter basis, respectively. Percentage of drip loss in control group was higher (P<0.01) than these in 4 % SBP and 8 % SBP diet groups (1.8 % vs. 1.6 % and 1.5 %). The lightness (L*) value was signifi cantly (P<0.01) decreased from 37.57 to 32.87 as a result of inclusion of SBP into the diets. However, redness (a*), yellowness, Chroma and Hue values signifi cantly were diminished by increasing the amount of SBP in the diet. Fatty acid composition was not signifi cantly infl uenced by the diets, but amount of C14:1 and C17:0 fatty acids available in longissimus dorsi, gluteus medius and quadriceps muscles were signifi cantly different. In conclusion, the inclusion of SBP into the diet at 8 % level improved percentage of drip loss and did not cause any adverse alteration of the fatty acid composition of the various beef muscles. However, a* and L* values of the beef decreased as a result of increasing amount of SBP in the diets. Source


Yuksel S.,Eastern Anatolian Agricultural Research Institute | Yanar M.,Ataturk University | Aksu M.I.,Ataturk University | Kopuzlu S.,Eastern Anatolian Agricultural Research Institute | And 3 more authors.
Tropical Animal Health and Production | Year: 2012

The effects of three finishing systems on carcass composition and other characteristics of meat were studied in 15 young Eastern Anatolian Red bulls in Eastern Turkey. For 93 days, five bulls grazed pasture (P), five grazed the same pasture and were given concentrate supplementation (P + C), and five grazed the same pasture for 93 days, and then for an additional 40 days, they received concentrate in a barn (PF). Carcasses of the P bulls were lighter and leaner than those of the PF animals. Compared with the P carcasses, PF carcasses had a greater percentage of kidney, pelvic, and heart fat (P < 0. 05), marbling score (P < 0. 05), fat thickness over the longissimus dorsi (LD) muscle (P < 0. 05), and percentage of ether extractable lipids (P < 0. 05). The LD of P carcasses was darker (P < 0. 01) in color and the meat was tougher. The ratio of polyunsaturated to saturated fatty acids in LD intramuscular fat was higher (P < 0. 05) for P bulls than for P + C and PF. P carcasses contained a lower (P < 0. 05) proportion of saturated fatty acids than PF carcasses. It is concluded that pasture-based finishing results in a more favorable fatty acid profile of meat and produces a healthier food, but the meat is darker and tougher. © 2012 Springer Science+Business Media B.V. Source

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