Effect of pasture allowance and energy supplementation upon dairy cows milk yield.

Álvarez, Hugo Javier Alvarado; Dichio, Luciana; Pece, Mariela; Cangiano, C. A.; Galli, Julio R.

doi:10.7764/rcia.v33i2.1298

Cited by 4 publications

(8 citation statements)

References 7 publications

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“…Milk fat and milk crude protein percentages were not affected by HA, in agreement with previous short term studies of cows grazing ryegrass based pastures at different allowances in early lactation [30], cows grazing a mix of grasses in mid lactation [31] and cows grazing alfalfa based pastures in mid lactation [8].…”

Section: Milk Production and Milk Compositionsupporting

confidence: 78%

“…The efficiency of grazing of alfalfa pastures in Argentina is low, usually less than 650 g/kg DM [5]. The relationship between herbage allowance (HA) and herbage dry matter (DM) intake was studied for dairy cows grazing alfalfa pastures in Argentina [6][7][8], but in these experiments, herbage DM intake (HDMI) was estimated for a group of animals, from DM disappearance in the sward, using the sward cutting method, rather than for individual animals [9]. It is expected that, as HA decreases, herbage dry matter (DM) intake/cow and individual milk yield decreases, but grazing time and the efficiency of grazing increases [10].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Herbage Allowance on Dry Matter Intake, Efficiency of Grazing,Milk Yield and Grazing Behaviour of Crossbred Holstein-Jersey Dairy Cows Grazing Alfalfa Pastures

Comeron¹

2014

Adv Dairy Res

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The objectives of this study were to research the effects of herbage allowance (HA) on dry matter (DM) intake, milk yield, grazing efficiency and grazing behaviour of dairy cows grazing alfalfa (Medicago sativa L.) pastures, and to compare the estimates of herbage DM intake using either an external intake marker developed from a purified enriched lignin (LIPE®) or the animal performance method, the latter based on calculations of energy requirements.Twenty six spring calving crossbred Holstein-Jersey dairy cows (84 days in milk) were balanced and assigned to either the low HA (Lo-HA; 10.0 kg DM/cow/day) or the high HA treatment (Hi-HA; 14.5 kg DM/cow/day). Cows were offered alfalfa (Medicago sativa L.) pastures at grazing, Sorghum (Sorghum bicolor) silage (3.7 kg DM/cow/day) and concentrates (5.6 kg DM/cow/day). Herbage DM intake was estimated using the sward cutting method, the animal performance method and an indigestible intake marker (LIPE®). Decreasing herbage allowance (HA) decreased herbage DM intake by 1.1 kg cow/day (P <0.05), increased the efficiency of grazing by 210 g/kg (P <0.01), increased silage DM intake by 0.3 kg cow/day (P <0.05), decreased total metabolisable energy intake by 12 MJ ME cow/day (P <0.05), but did not affect total DM intake (P >0.05). The cows on the Lo-HA treatment produced less milk (-4.1 kg cow/day (P <0.05) and grazed 26 min/day longer (P <0.05) than cows at the Hi-HA. Herbage DM intake measured with LIPE® was positively correlated with estimates of herbage DM intake from the animal performance method (R=0.65, P<0.01).This study showed that cows at the Hi-HA treatment had greater herbage DM intake and milk yield, but had an efficiency of grazing 210 g/kg lower than cows at the Lo-HA in early lactation.

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Section: Milk Production and Milk Compositionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Effects of Herbage Allowance on Dry Matter Intake, Efficiency of Grazing,Milk Yield and Grazing Behaviour of Crossbred Holstein-Jersey Dairy Cows Grazing Alfalfa Pastures

Comeron¹

2014

Adv Dairy Res

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“…Herbage allowance is recognized as one of the main factors affecting DMI in pasture (McEvoy et al, 2008;Alvarez et al, 2006;Dillon, 2006). Usually, a curvilinear relationship between HA and DMI can be found (Greenhalgh et al 1966;Peyraud 1996;Maher et al 2003).…”

Section: Discussionmentioning

confidence: 96%

“…An increase in HA has been reported to lead to an increase in DMI and individual milk yield (McEvoy et al, 2008). However, milk production per hectare and grazing efficiency (as a proportion of herbage mass removed over the total herbage mass offered) declines with increasing HA (Baudracco et al, 2014, Alvarez et al, 2006. It is important to note that many of these studies were carried out during the main grass growing season, i.e.…”

Section: Introductionmentioning

confidence: 97%

“…Several factors affect DMI in grazing situations as grazing time, fibre content of the pasture, herbage mass and supplementation (McEvoy et al, 2009). Herbage allowance (HA) is in turn, one of the major factors affecting DMI and milk production in grazing dairy cows (McEvoy et al, 2008;Alvarez et al, 2006). An increase in HA has been reported to lead to an increase in DMI and individual milk yield (McEvoy et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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High pasture allowance does not improve animal performance in supplemented dairy cows grazing alfalfa during autumn–winter

Danelón

Gaggiotti

Gallino³

et al. 2015

Livestock Science

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The effect of protected soybean meal as a protein supplement on blood metabolites of lactating dairy cows

Leondro

Widyobroto²,

Adiarto³

et al. 2019

JIIP

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Program Studi Magister Ilmu Ternak, Fakultas Peternakan Universitas Brawijaya Jl. Veteran, Malang (65145) ABSTRAK: Inseminasi buatan (IB) menggunakan semen sexing bertujuan untuk mendapatkan pedat dengan jenis kelamin sesuai harapan. Tujuan penelitian ini bertujuan untuk mengetahui keberhasil IB semen beku non sexing dan sexing. Materi dalam penelitian menggunakan 77 ekor akseptor IB non sexing dan 77 ekor akseptor IB sexing yang di IB secara double dosis. Metode penelitian ini menggunakan eksperimental dengan percobaan lapang (field experiment) dengan perlakuan penelitian adalah P0 = straw semen beku non sexing dan P1 = straw semen beku spermatozoa Y hasil sexing dengan metode pemisahan Sentrifugasi Gradien Densitas Percoll (SGDP) yang diproduksi oleh Balai Besar Inseminasi Buatan (BBIB) Singosari. Variabel penelitian meliputi Non Return Rate (NRR), Service Per Conception (S/C) dan Conception Rate (CR). Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian pada masingmasing perlakuan IB non sexing dan sexing secara berturut turut yaitu persentase nilai NRR 1 sebesar 90,91 % dan 77,92 %, nilai NRR 2 sebesar 88,31 % dan 76,62 %, persentase kebuntingan sebesar 84,42 % dan 75,33 %, nilai CR sebesar 79,22 % dan 57,14 %. Kesimpulan penelitian bahwa IB menggunakan semen beku non sexing memiliki tingkat keberhasilan yang lebih tinggi dibandingkan dengan IB menggunakan semen beku hasil sexing. Kata kunci: Inseminasi buatan; kebuntingan; double dosis.ABSTRACT: The purpose of artificial insemination using sexing semen was to obtain the calf according to the expected sex. This study aimed to determine the success of artificial insemination in non-sexing and sexing of frozen semen. The materials used in this research were 77 non-sexing artificial insemination acceptor cows and 77 sexing artificial insemination acceptor cows with double dose treatment. The method used in this study was experimental field experiment with the research treatment: P0 = frozen non-sexing semen straw and P1 = frozen semen of spermatozoa Y by sexing method using Percoll Density Gradient Centrifugation (SGDP) produced by Balai Besar Inseminasi Buatan (BBIB) Singosari. The variables of this study were Non Return Rate (NRR), Service Per Conception (S/C) and Conception Rate (CR). The data obtained were analyzed descriptively. The results of the study in each non-sexing and sexing artificial insemination treatment were: the percentage of NRR 1 were 90.91% and 77.92%, followed by NRR 2 with 88.31% and 76.62%, the pregnancy percentage were 84.42% and 75.33%, and the CR values were 79.22% and 57.14%. The conclusion of this study was artificial insemination using frozen non-sexing semen had a higher success rate compared to artificial insemination using frozen sexing semen.

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Effect of pasture allowance and energy supplementation upon dairy cows milk yield.

Cited by 4 publications

References 7 publications

Effects of Herbage Allowance on Dry Matter Intake, Efficiency of Grazing,Milk Yield and Grazing Behaviour of Crossbred Holstein-Jersey Dairy Cows Grazing Alfalfa Pastures

Effects of Herbage Allowance on Dry Matter Intake, Efficiency of Grazing,Milk Yield and Grazing Behaviour of Crossbred Holstein-Jersey Dairy Cows Grazing Alfalfa Pastures

High pasture allowance does not improve animal performance in supplemented dairy cows grazing alfalfa during autumn–winter

The effect of protected soybean meal as a protein supplement on blood metabolites of lactating dairy cows

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