The effects of various levels of nutrition before mating and at late pregnancy on the reproductive performance of Konya Merino ewes and growth and survival rates of their lambs

Akmaz, A.; Akcapnar, H.

Doga, Turk Veterinerlik ve Hayvanclk Dergisi 14(2): 301-319

1990


Accession: 002249632

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Abstract
From 3 weeks before mating, 135 Konya Merino ewes, 4, 5 and 6 years old, grazing low quality pasture, were given lucerne hay 700 g for 4 weeks. Groups A was unsupplemented, groups B and C received concentrates 400 and 800 g each daily, respectively. After regrouping in a crossover design groups 1, 2 and 3 were given concentrates 0, 600 and 1200 g daily and had free access to lucerne hay during late pregnancy. Lambs were weaned at 90 days old and were given lucerne hay and concentrates ad libitum until 120 days old. Feeding level of concentrate before mating did not affect reproductive performance. Average birth weight was 4.55, 4.94 and 4.81 kg, respectively. Liveweight at 90 and 120 days was not different among groups and survival rates were 98.39, 100 and 96.77%, respectively.