Effect of palm kernel expeller as supplementation on production performance of Jersey cows grazing kikuyu-ryegrass pasture

Wyngaard, J.D.V. van; Meeske, R.; Erasmus, L.J.

doi:10.1016/j.anifeedsci.2014.10.017

Cited by 13 publications

(13 citation statements)

References 36 publications

(53 reference statements)

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“…Milk components such as milk protein and milk lactose content were unaffected by PKE supplementation, which is in agreement with previous studies supplementing PKE (Carvallo et al, 2006;Dias et al, 2008;Van Wyngaard et al, 2015). However, Van Wyngaard et al (2015) reported an increase in milk lactose content at a 400 g PKE/kg of DM inclusion rate.…”

Section: Discussionsupporting

confidence: 81%

“…The ME, CP, and NDF contents of the kikuyuryegrass pasture in the current study were similar to those of Van der Colf et al (2015), as reported in the second year of establishment during the summer season. As expected, the IVOMD was 20% lower (646 versus 802 g/kg DM), ME content was 19% lower (9.36 versus 11.5 MJ/kg DM) and the NDF content was 4% higher (514 versus 494 g/kg DM) for the study pasture in comparison with similar pasture during spring (Van Wyngaard et al, 2015). Therefore, it is plausible that pasture in the current study was of lower quality.…”

Section: Discussionmentioning

confidence: 56%

“…Replicate nylon bags were incubated in the rumen as described by Cruywagen (2006) for 0, 6, 18, and 30 hours. After incubation, nylon bags were treated similarly to those of Van Wyngaard et al (2015). Residues were analysed for DM and NDF content parallel to the pasture and concentrate sample analyses and rate of NDF degradability was calculated according to Van Amburgh et al (2003).…”

Section: Methodsmentioning

confidence: 99%

“…Increasing levels of SEPKC (50, 100, and 150 g/kg DM) in a total mixed ration have been reported not to affect cow DM intake, milk yield URL: http://www.sasas.co.za ISSN 0375-1589 (print), ISSN 2221-4062 (online) Publisher: South African Society for Animal Science http://dx.doi.org/10.4314/sajas.v47i2.14 or milk composition (Carvalho et al, 2006). Correspondingly, milk yield and milk composition (except for milk lactose) were unaffected in a study in which cows grazed high-quality pasture in spring, supplemented with two levels of PKE (200 and 400 g/kg DM) in a dairy concentrate (Van Wyngaard et al, 2015). In both studies it can be posited that the nutrient supply was at optimum levels.…”

Section: Introductionmentioning

confidence: 99%

“…Palm kernel expeller, rather than SEPKC, is used as a source of energy, protein, and fibre for dairy cattle at inclusion levels of 300-500 g/kg of total diet (Wan Zahari & Alimon, 2004). However, an inclusion level of 400 g/kg DM has been associated with reduced concentrate intake due to palatability problems (Van Wyngaard et al, 2015). Increasing levels of SEPKC (50, 100, and 150 g/kg DM) in a total mixed ration have been reported not to affect cow DM intake, milk yield URL: http://www.sasas.co.za ISSN 0375-1589 (print), ISSN 2221-4062 (online) Publisher: South African Society for Animal Science http://dx.doi.org/10.4314/sajas.v47i2.14 or milk composition (Carvalho et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Palm kernel expeller increases milk fat content when fed to grazing dairy cows

Wyngaard¹,

Meeske²

2017

SA J. An. Sci.

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Palm kernel expeller (PKE) is a feed by-product that is used by the dairy and beef industries. This study investigated the effect of partially replacing maize with PKE in a dairy concentrate on milk and ruminal fermentation parameters of Jersey cows grazing kikuyu-ryegrass pasture. Seventy-two multiparous cows were blocked according to milk yield, days in milk, and lactation number and randomly allocated within blocks to one of four treatment concentrates: PKE0, PKE10, PKE20, and PKE30, containing 0, 100, 200, and 300 g PKE/kg dry matter (DM), respectively. Eight rumen-cannulated lactating cows were used in a 4 x 4 Latin square design. All cows grazed pasture as one group, and concentrate was fed at 5.4 kg DM/cow per day. Pasture was allocated at 11.1 kg DM/cow per day. Milk yield was lower with PKE30 than PKE0 (14.3 versus 15.6 kg/cow per day, respectively). Feeding PKE20 and PKE30 was associated with a higher milk fat content of 50.6 and 52.9 g/kg, respectively, than that of 46.3 and 49.3 g/kg of cows fed PKE0 and PKE10, respectively. However, feeding PKE30 compromised fibre degradability. Increased milk fat content and sustained milk yield indicated that 200 g PKE/kg DM can partially replace maize in a dairy concentrate, resulting in a possible added economical advantage, which is dependent on the milk payment system. The lack of a significant effect on milk fat yield and the negative linear relationship of milk protein to milk fat ratio, induced by PKE inclusion, may be unfavourable for certain milk payment systems. ______________________________________________________________________________

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 56%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Palm kernel expeller increases milk fat content when fed to grazing dairy cows

Wyngaard¹,

Meeske²

2017

SA J. An. Sci.

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Environmentally sustainable applications of agro-based spent mushroom substrate (SMS): an overview

Hanafi

Rezania

Taib

et al. 2018

J Mater Cycles Waste Manag

155

102

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Effect of dietary inclusion of date seed (Phoenix dactylifera L.) on intake, digestibility, milk production, and milk fatty acid profile of Holstein dairy cows

Rezaeenia

Naserian

Valizadeh

et al. 2018

Trop Anim Health Prod

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The objective of this experiment was to investigate the influence of ground date seed (GDS) on intake, digestibility, and milk yield and milk fatty acid (FA) composition of lactating Holstein cows. The experimental design was a 4 × 4 replicated Latin square with eight lactating dairy cows with an average milk production of 35.5 ± 1.5 kg and 75 ± 5 days in milk (DIM). Dairy cows were fed one of the four treatments contained 0, 2, 4, and 6% of diet dry matter (DM) GDS in replacement of wheat bran. All diets contained the same amount of forages (alfalfa hay and corn silage). Dietary treatments had no effect on DM intake (DMI), total tract apparent digestibility, milk yield, and milk composition. Increasing GDS linearly decreased concentration of C13:0 and increased cis-9 C14:1 and trans-11 C18:1 (vaccenic acid) (P < 0.05). A linear tendency for more C16:1 content in milk fat was observed with increasing GDS (P = 0.06). Feeding GDS resulted in a linear decrease (P < 0.01) in saturated FA (SFA) but increased milk fat monounsaturated FA (MUFA) and trans FA (TFA) (P < 0.05). Therefore, low levels of GDS (up to 6%) in the diet of Holstein dairy cows can beneficially modify milk FA composition without any adverse effects on intake, digestibility, and milk yield.

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Effect of palm kernel expeller as supplementation on production performance of Jersey cows grazing kikuyu-ryegrass pasture

Cited by 13 publications

References 36 publications

Palm kernel expeller increases milk fat content when fed to grazing dairy cows

Palm kernel expeller increases milk fat content when fed to grazing dairy cows

Environmentally sustainable applications of agro-based spent mushroom substrate (SMS): an overview

Effect of dietary inclusion of date seed (Phoenix dactylifera L.) on intake, digestibility, milk production, and milk fatty acid profile of Holstein dairy cows

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