Replacing Barley with Protected Tallow in Ration of Lactating Holstein Cows

Effects of Feeding Canola-Meal-Protected-Tallow or Soybean-Meal-Protected-Tallow in the Low-Roughage Diet of Dairy Cows in Early Lactation

“…With lactating dairy cows, DM intake has generally decreased with protected tallow intakes in excess of 1.7 kg'cow t'day ' (Macleod et al 19111, Bines et al 1918;Smith et al 1978). On the other hand, there have not been significant differences reported in DM intakes by cows for diets containing less than 1.70 kg'cow-t'day 'of protected tallow (Bines et al 1978;Sharma et al 1978;Kronfeld et al 1980). This is in agreement with the present study where the average protected tallow intake was 0.95 kg'cow ''day-r. Studies where protected tallow was fed to lactating dairy cows have demonstrated that energy intakes were not significantly different from controls (Macleod et al 1977;Smith et al 1978 (Table 2), and is in agreement with most trials on protected tallow (Macleod et al, 1977;Smith et al 1918;Fisher 1979).…”

“…19'18; Smith et al 1978;Fisher 1979). Milk fat percentage showed no response to protected tallow in some cases (Sharma et al 1978;Wrenn et al 1978;Fisher 1979) but was significantly increased in others (Macleod et al 19ll; Bines et al 1918;Sharma et al 1978; Smith et al 1978). …”

Effects of calcium salt supplementation on dairy cow performances in early lactation. Influence of the nature of concentrates

“…The increase in plasma cholesterol and phospholipids with calcium salt supplementation, especially in mid-lactation, is consistent with the general effect of lipids (for example, Sharma et al, 1978;Smith et al, 1978;Gagliostro et al, 1991 (Chilliard, 1993) (Michalet-Doreau and Sauvant, 1989), and milk synthesis does not depend to a large extent on the equilibrium between the endproducts of digestion (Sutton, 1989 (Casper et al, 1990) or calcium salts (Klusmeyer et al, 1989b (Romsos et al, 1981) and mares (Doreau et al, 1992a). However, a negative effect of lipid supplementation on milk lactose has already been shown in cows (Pan et al, 1972;MacLeod et al, 1977;Chilliard and Doreau, unpublished …”

The Addition of Whole Sunflower Seeds and Sodium Bicarbonate to Fat Depressing Diets for Lactating Cows

“…"ur" energy intake by the inclusion of 3-5% oll or fat in the diet' However, dietary supplementation of certain oils and uniiturated fatty acids may cause a reduction in milk fat secretion (Palmquist and Jenkins 1980). Considerable attention has been given to the metabolic effects of feeding protected fats and oils to dairy cows (Macleod and Wood 1972;Macleod et al 1972;Palmquist and Conrad 1978;Sharma et al 1978 (ADF) according to Goering and Vansoest (1970).…”