Agriculture

Dairy Sheep Nutrition by Giuseppe Pulina

By Giuseppe Pulina

Sheep milking is common during the Mediterranean, and is changing into extra universal in international locations comparable to the united kingdom, united states, valuable the US, South Africa, Australia and New Zealand. reliable meals is a serious consider optimising dairy creation from sheep. This booklet is a translation of a well-liked Italian textual content, initially released in 2001 and comprises up to date details, and new fabric on temperate areas. It comprises chapters on all points of dairy sheep food and feeding, resembling milk creation, feed consumption, meals and replica, nutrients and milk caliber, and grazing and stocking price administration.

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The comparison showed that the highest maintenance requirements were those calculated by NRC. 2, which were also given by NRC in the introduction. No clear reasons for this discrepancy could be found. 4). 4. 6. 40. 2. , 1989). 6 and M/D equal to 11041 MJ/kg of DM. 751 for INRA, respectively. qxd 14/9/04 2:58 PM Page 36 36 A. 4). 2 Milk production requirements Both AFRC and CSIRO estimate milk net energy cost of production by using an equation developed from data obtained using wool breeds. This equation includes milk fat content and days in milk as predictors.

Prod. , 68: 189–203. , Cappio-Borlino A. (2000) Effect of blactoglobulin polymorphism on dairy ewe milk-related traits analysed by a repeated measures design. J. , 67: 443–448. , San Primitivo F. (1994) Factors influencing variation of test day milk yield, somatic cell count, fat and protein in dairy sheep. J. , 77: 1537–1542. J. (1995) A mathematical model for describing and predicting the lactation curve of Merino ewes. Anim. , 61: 95–101. Hamilton, J. D. (1994) Time Series Analysis. Princeton University Press, Princeton, New Jersey.

Relationship between dietary metabolizability (qm = GE/ME) and efficiencies of conversion of NE for maintenance and lactation to ME in AFRC, CSIRO and INRA feeding systems. was extrapolated from NRC requirement tables. 83. It was not possible to extrapolate the actual values used to compute ME requirements because, in the case of lactating ewes, the milk yield used to compute the requirements was not given. The comparison of the efficiency of utilization of ME for maintenance showed that AFRC and CSIRO estimated higher efficiencies than INRA, which uses the same kl for maintenance as for lactation (Fig.

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