Comparative performance in Holstein-Friesian, Jersey and crossbred cows milked once daily under a pasture-based system in New Zealand

Lembeye, F; López‐Villalobos, N.; Burke, J. L.; Davis, S. R.; Richardson, J.M.; Sneddon, NW; Donaghy, DJ

doi:10.1080/00288233.2016.1207669

Cited by 10 publications

(11 citation statements)

References 17 publications

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“…In the present study, the difference between the groups was 1 l cow -1 day -1 at the peak of lactation. In addition to the number of lactations, various works have shown an effect of the number of milkings on milk production throughout lactation (Prendiville et al, 2009(Prendiville et al, , 2010(Prendiville et al, , 2011Lembeye et al, 2016). In this sense, Lembeye et al (2016) show an interesting result for the J x HO cows that were milked once a day, concluding that this crossing was probably better adapted to feed under grazing conditions.…”

Section: Discussionmentioning

confidence: 94%

“…In addition to the number of lactations, various works have shown an effect of the number of milkings on milk production throughout lactation (Prendiville et al, 2009(Prendiville et al, , 2010(Prendiville et al, , 2011Lembeye et al, 2016). In this sense, Lembeye et al (2016) show an interesting result for the J x HO cows that were milked once a day, concluding that this crossing was probably better adapted to feed under grazing conditions. In this study, the number of milkings was not evaluated, but in this survey the KC group responded similarly to the HO group in terms of milk production throughout lactation.…”

Section: Discussionmentioning

confidence: 94%

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Productive performance of Holstein and the crossbreding Kiwi Cross x Holstein cattle

2020

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Introduction. During decades, milk production in the Nariño state has depended on the Holstein breed. For this reason, it is necessary to evaluate a model of milk production that allows to decrease production costs and in turn improves the compositional quality of the milk. Objective. This study aimed to compare milk production and compositional quality of Holstein (HO) and the crossbreed between Kiwi Cross (KC) x HO. Materials and methods: Monthly milk production in HO cows (n=30) and the ones from the F1 of the KC x HO cross (n=40), was measured by adjusting the day in milk (DIM) and milk production by third of lactation, fat, protein and total solids. For the period between October 2016 and May 2017, 9,809 dairy production records were analyzed. Results: Maximum production was 25.8 ± 0.53 vs. 23.2 ± 0.53 l day-1 for HO vs. KC cows (p<0.05), respectively. The DIM was not different; however, in days 60, 90, 150, 180, 210 and 240 the HO group produced more milk than the KC group, with a persistence in the lactation peak until day 60, and from that point onwards milk production showed decreasing rates in both groups. Furthermore, the production per third of lactation was higher (p<0.05) in the first third compared to the second and third periods for HO (13.6±0.56 vs. 11.3±0.5723 and 9.9±0.47 l day-1, respectively) and KC (12.8±0.4505 vs. 10.6±0.66 and 9.5 ± 1.69 l day-1, respectively). Fat content was higher (p<0.05) in KC compared to HO in week one, three and five (4±0.07, 4±0.07, 4±0.07 vs. 3.6±0.12, 3.6±0.11, 3.7±0.09 %, respectively); likewise, protein in week one and four was higher in the KC group compared to HO (3.3±0.04 vs. 3.1±0.05 %; p<0.05). Total solids were 13.3±0.17 vs. 12.5±0.23% (p<0.05) for KC and HO cows, respectively in weeks two and five. Conclusion: Milk production in KC and HO was similar; however, KC improved performance in compositional milk quality, increasing the percentages of fat, protein and consequently, total solids.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 94%

Productive performance of Holstein and the crossbreding Kiwi Cross x Holstein cattle

2020

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“…All yield parameters were significantly higher in second parity cows than first parity cows that were in their first, regardless of milking frequency. It is well-reported that older cows produce more milk than first lactation cows regardless of milking frequency and breed (Lembeye et al, 2016).…”

Section: Production Traitsmentioning

confidence: 99%

Lactoferrin concentration and expression in New Zealand cows milked once or twice a day

Gedye

Notcovich

Correa-Luna

et al. 2020

Animal Science Journal

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New Zealand Dairy cows are predominantly milked twice a day (TAD), however full-season once a day (OAD) milking was practiced by ~9% of herds in New Zealand in the season 2015-2016 (Edwards, 2018). OAD milking offers benefits to both the cow and farmer and has been detailed previously by Stelwagen et al. (2013). Changing from TAD to OAD causes a reduction in milk volume and introduces changes in milk composition. A positive effect of OAD is a significant increase in the content of valuable bioactive molecules, such as lactoferrin (LF), and other immune-related proteins in milk, such as acute phase proteins and RNases (Farr et al., 2002; Stelwagen et al., 2011). LF is produced in bovine milk as part of a wide range of bioactive proteins and peptides, which have roles in immunity and immunoregulation functions (Galfi et al., 2016). LF has been found to have antibacterial activity for bacteria with high iron requirements like Escherichia coli and Staphylococcus aureus, coagulase negative Staphylococcus sp. and Pseudomonas aeruginosa (González-Chávez, Arévalo-Gallegos, & Rascón-Cruz, 2009). In addition, LF exhibits antiviral activity to both DNA and RNA viruses, and antifungal activity against Candida sp., Aspergillus sp. and Trichophyton sp. (González-Chávez et al., 2009). Lactoferrin has been investigated for the last 20 years for its ability to stimulate immune response by inducing granulopoiesis, participating in the process of cytokines and antibodies synthesis in vitro, activating complement and producing interleukins (IL-1 & IL-2) and tumor necrosis factor D (Legrand, 2011). In addition, LF was characterized as a factor intervening in the fight of cancer (Duarte, Nicolau,

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“…One metric sometimes used by producers is the kilogram of lactation yield per kilogram of cow (metabolic) BW (Macdonald et al, 2008;Prendiville et al, 2009;Coleman et al, 2010;Lembeye et al, 2016). Lactation yield here could imply total milk yield (e.g., liquid milk market), kilograms of milk solids or fat plus protein yield (e.g., manufacturing milk), or indeed either a reflection of the calorific content of the milk (e.g., net energy of lactation; NRC, 2001) or the economic value of the milk.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, there is an interest on generating estimates of genetic merit for milk solids per kilogram of BW as a supplementary measure to ranking on an overall breeding goal. Interbreed differences in milk solids per kilogram of BW have been reported in lactating dairy cows (Prendiville et al, 2009;Lembeye et al, 2016). Whether intra-breed genetic variation in milk solids per kilogram of BW actually exists is still unknown, let alone the effect of such a selection strategy on the selection pressure on other traits.…”

Section: Introductionmentioning

confidence: 99%

Contribution of genetic variability to phenotypic differences in on-farm efficiency metrics of dairy cows based on body weight and milk solids yield

Berry

McCarthy

2021

Journal of Dairy Science

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Milk solids per kilogram of body weight (BW) is growing in popularity as a measure of dairy cow lactation efficiency. Little is known on the extent of genetic variability that exist in this trait but also the direction and strength of genetic correlations with other performance traits. Such genetic correlations are important to know if producers are to consider actively selecting cows excelling in milk solids per kilogram of BW. The objective of the present study was to use a large data set of commercial Irish dairy cows to quantify the extent of genetic variability in milk solids per kilogram of BW and related traits but also their genetic and phenotypic inter-relationships. Mid-lactation BW and body condition score (BCS), along with 305-d milk solids yield (i.e., fat plus protein yield) were available on 12,413 lactations from 11,062 cows in 85 different commercial dairy herds. (Co)variance components were estimated using repeatability animal linear mixed models. The genetic correlation between milk solids and body weight was only 0.05, which when coupled with the observed large genetic variability in both traits, indicate massive potential to select for both traits in opposite directions. The genetic correlations between both milk solids and BW with BCS; however, need to be considered in any breeding strategy. The genetic standard deviation, heritability, and repeatability of milk solids per kilogram of BW was 0.08, 0.37, and 0.57, respectively. The genetic correlation between milk solids per kilogram of BW with milk solids, BW, and BCS was 0.62, −0.75, and −0.41, respectively. Therefore, based on genetic regression, each increase of 0.10 units in genetic merit for milk solids per kilogram of BW is expected to result in, on average, an increase in 16.1 kg 305-d milk solids yield, a reduction of 25.6 kg of BW and a reduction of 0.05 BCS units (scale of 1-5 where 1 is emaciated). The genetic standard deviation (heritability) for 305-d milk solids yield adjusted phenotypically to a common BW was 27.3 kg (0.22). The genetic correlation between this adjusted milk solids trait with milk solids, BW, and BCS was 0.91, −0.12, and −0.26, respectively. Once also adjusted phenotypically to a common BCS, the genetic standard deviation (heritability) for milk solids adjusted phenotypically to a common BW was 26.8 kg (0.22) where the genetic correlation with milk solids, BW and BCS was 0.91, −0.21, and −0.07, respectively. The genetic standard deviation (heritability) of BW adjusted phenotypically for differences in milk solids was 35.3 kg (0.61), which reduced to 33.2 kg when also phenotypically adjusted for differences in BCS. Results suggest considerable opportunity exists to change milk solids yield independent of BW, and vice versa. The opportunity is reduced slightly once also corrected for differences in BCS. Inter-animal BCS differences should be considered if selection on such metrics is contemplated.

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Comparative performance in Holstein-Friesian, Jersey and crossbred cows milked once daily under a pasture-based system in New Zealand

Cited by 10 publications

References 17 publications

Productive performance of Holstein and the crossbreding Kiwi Cross x Holstein cattle

Productive performance of Holstein and the crossbreding Kiwi Cross x Holstein cattle

Lactoferrin concentration and expression in New Zealand cows milked once or twice a day

Contribution of genetic variability to phenotypic differences in on-farm efficiency metrics of dairy cows based on body weight and milk solids yield

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