Dairy Sheep Nutrition by Giuseppe Pulina

By Giuseppe Pulina

Sheep milking is frequent during the Mediterranean, and is changing into extra universal in nations resembling the united kingdom, united states, primary the USA, South Africa, Australia and New Zealand. reliable nutrients is a severe consider optimising dairy construction from sheep. This ebook is a translation of a well-liked Italian textual content, initially released in 2001 and contains up-to-date info, and new fabric on temperate areas. It includes chapters on all points of dairy sheep foodstuff and feeding, reminiscent of milk construction, feed consumption, nutrients and copy, food and milk caliber, and grazing and stocking price administration.

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This result is usually explained by the reduced rumen functionality, the lower synthesis efficiency of the mammary gland and the preferential utilization of the available amino acids in growing tissues in young animals. Another interesting aspect evidenced by TD modelling in Valle del Belice sheep is the difference in the rate of increase throughout lactation between fat and protein percentage, the latter being of a lower order. As a consequence, the ratio between fat and protein percentage increased over time, as observed in other dairy sheep breeds.

5. Equations proposed to estimate milk energy content or milk energy values. 8% lactose) BF: butterfat content, g/kg; FAT: butterfat content, g/litre; DIM: number of days of lactation. 4). 4). 4). 4). 1) and on the system considered. AFRC, CSIRO and INRA use the same values for cattle and sheep. As stated before, AFRC and INRA estimate these efficiencies with equations that use the metabolizability (qm) of the diet as the independent variable. CSIRO uses M/D, in order to account for the higher efficiency of ME utilization observed for high-quality diets (high qm and M/D) compared with lowquality ones (ARC, 1980).

1970) Time Series Analysis: forecasting and control. Holden Day, San Francisco, California. Brody S. (1945) Bioenergetics and growth. , New York. , Rossi G. (1989a) La previsione della produzione lattea totale in pecore di razza sarda con l’uso di polinomi. Produzione Animale, 35: 35–39. , Rossi G. (1989b) La curva di lattazione di pecore di razza Sarda adattata ad una funzione di tipo gamma. Zoot. e Nutr. , 15: 59–63. , Rossi G. (1995) A non-linear modification of Wood’s equation fitted to lactation curves of Sardinian dairy ewes.

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