ORHAN YILMAZ, BAHATTİN ÇAK, MEMİŞ BOLACALI

Effects of lactation stage, age, birth type and body weight on chemical composotion of red karaman sheep milk

Bu araştırma ekstansif koşullarda yetiştirilen Morkaraman koyunların sütünün kimyasal bileşimine laktasyon evresi, yaş, doğum tipi ve beden ağırlığının etkisini incelemek amacıyla yapılmıştır. Araştırmada, Morkaraman koyun sütünde yağ, protein, kuru madde, laktoz ve kül oranları sırasıyla %6.31, 6.23, 17.35, 5.12 ve 0.91 olarak tespit edilmiştir. Süt yağı ve protein üzerine laktasyon evresinin (P

Anahtar Kelimeler:

yaş, kimyasal bileşim, koyun sütü, koyunlar, laktasyon, süt bileşimi, süt yağı, süt proteini, süt hayvanları, vücut ağırlığı, koyun, Morkaraman

Morkaraman koyun sütünün kimyasal bileşimine laktasyon evresi, yaş, doğum tipi ve beden ağırlığının etkisi

The present study was undertaken to assess the infl uences of lactation stage, age, birth type and body weight of ewes on chemical properties of milk of Red Karaman sheep reared under extensive conditions. Average milk fat, protein, total solid, lactose and ash percentages of Red Karaman sheep milk were 6.31, 6.23, 17.35, 5.12 and 0.91%, respectively. Eff ects of lactation stage, age and body weight of ewes were signifi cant (P<0.001; P<0.01) on milk fat and protein contents. The eff ect of only lactation stage was signifi cant (P<0.01) on total solid. Milk fat and protein contents were lowest (6.20% and 5.72%) at the beginning and highest (6.44% and 6.80%) at the end of lactation stage. Signifi cant positive phenotypic correlations were established between total solids and milk fat (0.87) and between total solids and protein (0.41). Signifi cant negative phenotypic correlations were established between lactose and milk fat (-0.58), between lactose and protein (-0.40) and between lactose and total solid (-0.50). The results of the present study suggest that increase in milk fat was accompanied by a increase in milk protein and total solid toward the end of lactation. The younger and lighter ewes produced more milk fat and protein. Chemical compositions of milk of ewes rearing single lambs were similar to that of ewes rearing twins.

Keywords:

age, chemical composition, ewe milk, ewes, lactation, milk composition, milk fat, milk protein, milk yielding animals, body weight, sheep, Morkaraman,

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