EFFECT OF SOYBEAN OIL MEAL, SUNFLOWER OIL MEAL AND PEA ON MILK PRODUCTION OF SHEEP | Влияние на соев шрот, слънчогледов шрот и грах върху млечната продукция при овце
2011
Kirilov, A., Institute of Forage Crops, Pleven (Bulgaria) | Krachunov, I., Institute of Forage Crops, Pleven (Bulgaria) | Mikhajlova, G., Thracian University, Stara Zagora (Bulgaria)
The objective of this study was to compare the effect of soybean oil meal, sunflower oil meal and pea grain on milk quantity and composition in dairy sheep of the Pleven Blackface breed. The study was conducted with 36 sheep divided in three groups by the analogue method. The sheep were fed twice a day with balanced rations composed of maize silage, wheat and maize grain and containing soybean oil meal, sunflower oil meal and pea grain, respectively, as a protein source. The milk of the sheep fed with the ration containing sunflower oil meal had higher fat content than the milk obtained from feeding with soybean oil meal or pea. There was a trend to greater quantity of 6,5% fat corrected milk from the sheep fed with sunflower oil meal, as compared to the other two groups fed with pea or soybean oil meal. As for the indicator of milk curdling capacity, the trend was to decrease of the time in the following direction: soybean oil meal – sunflower oil meal – pea. The milk of the sheep fed with pea had lower magnesium content and lower amino acid content.
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