Lactational Response of Dairy Cows to Increased Dietary Crude Protein with Added Fat

Kim, Y.K.; Schingoethe, D.J.; Casper, D. P.; Ludens, F.C.

doi:10.3168/jds.s0022-0302(91)78582-2

Cited by 26 publications

(13 citation statements)

References 19 publications

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“…Daily DM consumption was found to amount to 15.97 kg/d in cows fed untreated DCF, 15.84 kg/d in cows fed DCF treated with 2F, 15.94 kg/d for treated with 2.5TA DCF and 15.59 kg/d for treated with 2F + 2.5TA DCF. These results are accordance with those reported by Kim et al (1991), Nianogo et al (1991) and Grummer et al (1994), who stated that DM consumption was not affected by treatments. Rodrigues et al (1997) reported that DM intake decreased 6.2% by the addition of fat.…”

Section: Resultssupporting

confidence: 83%

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Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

Sariçiçek¹

2004

CZECH J ANIM SCI

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This study was conducted to investigate the effects of untreated dairy compound feeds; DCF (control) and DCFs subjected to 2% fat (F); 2.5% tannic acid (TA); 2% fat + 2.5% tannic acid (F + TA) on the milk yield and composition. In the study, 4 cows of Jersey breed were used and 4 × 4 Latin square experimental design was applied. Normal milk yield, 4% fat corrected milk yield (FCM), dry ma�er content of milk, non-fat solids content of milk, CP content of milk, fat content of milk, lactose content of milk, crude ash content of milk, daily DM consumption of cows, feed efficiency according to normal milk yield of cows, feed efficiency according to the FCM of cows were 11.96, 12.14, 10.89 and 11.94 kg/day (P < 0.05); 14.16, 14.50, 13.06 and 13.70 kg/day (P < 0.05); 13.37, 13.34, 13.54 and 13.41% (P > 0.05); 8.12, 8.00, 8.35 and 8.19% (P > 0.05); 3.67, 3.70, 3.87 and 3.63% (P < 0.05); 5.25, 5.34, 5.19 and 5.22% (P > 0.05); 4.97, 4.812, 5.01 and 5.042% (P > 0.05); 0.75, 0.73, 0.74 and 0.73% (P > 0.05); 15.97, 15.84, 15.94 and 15.59 kg/day (P > 0.05); 1.34, 1.31, 1.46 and 1.31 kg feed DM/kg milk (P > 0.05); 1.13, 1.09, 1.22 and 1.14 kg feed DM/kg milk (P > 0.05), respectively. According to the results it can be stated that 2.5TA and 2F treatments had positive effects on FCM milk yield and milk protein yield.

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Section: Resultssupporting

confidence: 83%

“…Kim et al (1991) reported that milk production was higher in cows fed added fat, milk protein and casein tended to decrease in cows fed added fat and did not increase with higher dietary protein. Some studies showed that the intake of DM and milk production were not affected by fat Supported by Tubitak (Project Togtag-2034).…”

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confidence: 99%

Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

Sariçiçek¹

2004

CZECH J ANIM SCI

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“…The least favourable was the influence of copper on the fat and protein levels in milk and the level of daily production of both components of milk. In studies carried out to date, the addition of CaFA salts to rations for cows at a rate of 3-6% DM increased the fat content of milk (Erickson et al, 1992;Brzoska et al, 1999 a,b), accompanied by a negative effect on the protein content of milk (Kim et al, 1991(Kim et al, , 1993Erickson et al, 1992;Kowalski, 1997;Brzoska et al, 1999 a). Nevertheless, a lack of a positive effect of CaFA salts on milk fat was also found (Madison-Anderson et al, 1997).…”

Section: Resultsmentioning

confidence: 99%

The effect of fatty-acid calcium salt and copper supplementation of daily rations on milk yield and composition, lipid metabolism and cholesterol level in cow's milk

Brzóska¹,

Sala²

2001

J. Anim. Feed Sci.

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“…In an earlier similar experiment by Bielak et al (1994), cows fed diets supplemented with CaFA salts produced 1.73 kg milk more than without this supplement. Kim et al (1991), , Bielak et al (1994) or Potkahski et al (1997) reported that supplementing diets with CaFA salts for milking cows resulted in decreased fat and even protein content in produced milk. The Erafet preparation is produced from a mixture of rape seed and fish oils and represents a mixture of fatty acids calcium salts and glycerol obtained through alkaline hydrolysis of fats.…”

Section: Discussionmentioning

confidence: 99%

Milk yield, composition and cholesterol level in dairy cows fed rations supplemented with zinc and fatty acid calcium salts

Brzóska

Kowalczyk²

2002

J. Anim. Feed Sci.

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In an experiment conducted on 16 Red-and-White cows in a 2 x 2 Latin square design, the effect of two levels of zinc and calcium fatty acid salts on milk yield, composition and cholesterol level were studied. Cows were a fed diet consisting of maize and grass silage, ground barley, wheat bran and rapeseed meal with mineral mixtures, which in the control groups had a low level of Zn and fatty acid salts but in the experimental groups was supplemented with 6% (DM basis) calcium fatty acid salts and mineral mixture enriched with 6 g Zn/ kg that corresponds to 480 mg Zn/ cow/day. Intake of DM was 19.2 ±0.28 kg/d, in this 12.1 ±0.22 kg was from silages and 7.1 ±0.16 from concentrate. Mean milk yield did not differ significantly between the treatments and was 26.2 ± 0.68 kg/day; cows on the diet with the higher level of Zn produced 0.9 kg/day less, those receiving fatty acid salts gave about 0.93 kg/d more milk, but the differences did not reach statistical significance. Milk from cows fed the diet supplemented with 6% fatty acid salts contained less fat and protein (P<0.05) but had a higher acidity (P<0.01) and renneting time (PO.05). Enrichment of the diet with Zn did not significantly affect the content of the nitrogen fraction including casein. Addition of fatty acid salts to the diet resulted in a significant decrease of total-N, protein-N, casein-N fractions (P<0.01) and saturated fatty acids (P<0.05) but increased the unsaturated fatty acid (PO.05) level in milk. The higher Zn level fed with the diet elevated its content in the blood (PO.01), whereas the level of other determined metabolites did not differ significantly between treatments. Feeding cows CaFA salts significantly elevated triglyceride, total cholesterol, HDL (PO.01), alkaline phosphatase and magnesium levels (P>0.05) in blood plasma. Feeding cows with diets supplemented with Zn or CaFA salts did not change milk total cholesterol levels, with the mean concentration in milk being 17.2±0.4 mg/lOOml.

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Lactational Response of Dairy Cows to Increased Dietary Crude Protein with Added Fat

Cited by 26 publications

References 19 publications

Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

Possibilities of using dairy compounds exposed to different treatments in dairy cow feeding

The effect of fatty-acid calcium salt and copper supplementation of daily rations on milk yield and composition, lipid metabolism and cholesterol level in cow's milk

Milk yield, composition and cholesterol level in dairy cows fed rations supplemented with zinc and fatty acid calcium salts

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