Dairy Sheep Nutrition by Giuseppe Pulina

By Giuseppe Pulina

Sheep milking is frequent in the course of the Mediterranean, and is turning into extra universal in international locations akin to the united kingdom, united states, principal the United States, South Africa, Australia and New Zealand. stable nutrients is a serious consider optimising dairy creation from sheep. This booklet is a translation of a favored Italian textual content, initially released in 2001 and comprises up to date details, and new fabric on temperate areas. It comprises chapters on all facets of dairy sheep food and feeding, equivalent to milk construction, feed consumption, food and copy, foodstuff and milk caliber, and grazing and stocking price administration.

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2). The basic NE maintenance requirements are lowest for AFRC and CSIRO and highest for INRA and NRC. The first two systems are based on the results of the fasting metabolism studies of ARC (1980). The other two systems acknowledge that heat production under fasting conditions involves decreased metabolic rates for energy con- 33 servation. For this reason, NRC adopted the extrapolated fasting metabolism values of Rattray et al. (1973). INRA based its requirements on values obtained by various techniques (INRA, 1978) (measurements taken after slaughtering, feeding trials, calorimetry studies and blood indicators).

1998). 7 shows an example of the fitting of an AR(1) process to the actual correlation structure of residuals of TD milk yields. qxd 6 5 4 3 0 50 100 150 Days in milking 200 250 Fig. 6. Lactation curves of protein percentage for three different parity classes of Valle del Belice sheep estimated with a Test Day model. , 1997). 4/10/04 2:00 PM Page 20 20 A. Cappio-Borlino et al. 2 0 0 2 4 6 8 10 12 14 Lag Fig. 7. Fit of an autoregressive process of the first order (__) to the correlation pattern ( ■ ) among Test Day yields of dairy ewes at different lags between measures.

1990) Introduzione all’analisi delle serie storiche (Introduction to time series analysis). , Rome. E. (2000) A biological approach to lactation curve analysis for milk yield. J. , 83: 2448–2458. , Gootwine E. (2000) Appropriate mathematical models for describing the complete lactation of dairy sheep. Anim. , 71: 197–207. E. (1999) Prediction of daily milk yields from a limited number of test days using test day models. J. , 82: 1555–1564. , Leto G. (1996) Application of the Wood model to lactation curves of Comisana sheep.

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