Dry matter, protein, energy and fibre intake by dairy heifers grazing a Rhodes grass (Chloris gayana) pasture

Abate, A.; Kayongo-Male, H.; Karue, C. N.

doi:10.1016/0377-8401(81)90026-2

Cited by 5 publications

(7 citation statements)

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“…In a study using replacement dairy heifers grazing on warm-season grass (Bermuda grass) under different grazing methods, [10] reported 0.5 kg of ADG regardless of the grazing method; in this study, animals were supplemented with 1.5 kg (approximately 0.6% BW) of concentrate containing corn and soybean meal. In a study using Rhodes grass, [11] reported an ADG of 0.2 kg/d in Friesian and Ayrshire dairy heifers when not supplemented and 0.55 kg/d when supplemented. Nonetheless, the knowledge obtained from studies using cool season grasses does not necessarily directly apply to tropical conditions.…”

Section: Introductionmentioning

confidence: 99%

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

et al. 2019

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The literature lacks studies investigating the performance of supplemented replacement heifers grazing on intensively managed warm-season pasture. Our objective was to evaluate the effects of supplement composition (energetic or protein) on the performance, muscle development, thermogenisis, nutrient intake, and digestibility of replacement Holstein heifers grazing Mombaça grass. Eighteen Holstein heifers with an average age and initial body weight (BW) of 12.57 ± 2.54 mo and 218.76 ±47.6 kg, respectively, were submitted to a randomized block design, with six replicates on a rotational grazing system of Panicum maximum cv. Mombaça pasture. Treatments were: control (CON; mineral salt ad libitum); energy supplement (ENE; corn meal as supplement, 8% CP and 3.78 Mcal/kg DE); and protein supplement (PRO; corn and soybean meal, 25% CP and 3.66 Mcal/kg DE). Supplements were individually fed at 0.5% BW. The experiment lasted 120 days, subdivided into three periods. Titanium dioxide and indigestible neutral detergent fiber (iNDF) were used to estimate the intakes and digestibility of the nutrients. BW, wither height, thoracic circumference, body length, and ultrasound of ribeye fat thickness measurements were taken once per period. Body condition score (BCS) was assessed twice during the experiment. The MIXED procedure of SAS, including period as a repeated measure, was used and significance was declared at P ≤ 0.05. Dry matter intake (DMI), CP intake (CPI) and DE intake were greater in heifers fed PRO compared to CON and ENE. Heifers supplemented with ENE had the lowest DMI. Treatment affected pasture intake/BW; it was similar between PRO and CON heifers, and lower for the ENE treatment. A treatment × period interaction was observed for NDF intake (%BW), in which heifers fed PRO and CON had the greatest NDF intake and ENE had the lowest. The digestibility of DM was the greatest in PRO-supplemented heifers and the lowest in CON heifers. Heifers fed ENE had decreased CP digestibility compared to PRO and CON heifers. Average daily gain (ADG) and thoracic circumference gain were greatest in the PRO treatment. BCS was greater in PRO compared to CON and ENE heifers. Supplementing Holstein heifers at 0.5% BW using PRO supplementation resulted in better animal performance, primarily greater ADG, than feeding ENE or not supplementing (CON). In conclusion, our results indicate that dairy heifers should be fed a protein supplement when grazing intensively managed Mombaça grass pasture.

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Section: Introductionmentioning

confidence: 99%

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

et al. 2019

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“…1981). Animals have high intake from this species at various stages and therefore generally meet their daily intake (Abate et al. 1981).…”

Section: Introductionmentioning

confidence: 99%

“…(rhodesgrass), play important roles in grassland production across the globe, but much of its response to potential carbon dioxide (CO 2 ) enrichment is still unknown. It is a species that has been reported to be high in crude protein and fiber (Abate et al 1981). Animals have high intake from this species at various stages and therefore generally meet their daily intake (Abate et al 1981).…”

Section: Introductionmentioning

confidence: 99%

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Effects of CO₂ enrichment on growth partitioning of Chloris gayana in the arid environment of the UAE

Ksiksi

Youssef

2010

Grassland Science

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Grass species are impacted by increases in atmospheric carbon dioxide (CO2). Grass species such as rhodesgrass (Chloris gayana) respond in a variety of ways to CO2 enrichment. Some species spend more resources in the above‐ground parts while others invest in below root system. The extent of growth responses and growth portioning in C. gayana as affected by increases in CO2 was assessed. Pot trials were set up to compare plant growth parameters (e.g. plant height and number of leaves) between conditions mimicking the ambient (about 350 ppm) and enriched (650 ppm) CO2 concentrations. Plants grown under the high CO2 concentration had significantly higher plant height than those grown under the ambient CO2 concentration for days 8 and 18 and to some extent for day 45. Plants grown under CO2 enrichment, however, had a lower number of leaves than those grown under the ambient CO2 level 28 days into the trial and to some extent on day 31. Overall, plants grown under CO2 enrichment had a lower shoot/root ratio than those grown under ambient CO2 levels. It is believed that biomass (shoots and roots) allocation into reproductive growth was a key phenomenon affecting C. gayana growth.

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“…The CP content of half the forages were above, and half were below, the 96 g/kg DM recommended for the maintenance of a 50 kg sheep feeding good quality pastures (NRC, 2007) suggesting that an even higher intake of these lower quality pastures would be necessary to supply the N requirement of sheep. The upper half had values similar to those found in fresh Digitaria decumbens by Fanchone et al (2010), and in Chloris gayana pasture by Abate et al (1981). This suggests that the grasses in the different diets were of different species mix and possibly at different stages of maturity though they had all been allowed four months of re-growth.…”

Section: Discussionmentioning

confidence: 49%

Feed intake and digestibility by sheep of natural vegetation in the riparian land of lake Naivasha, Kenya

Changwony

Lanyasunya

Südekum

et al. 2015

Small Ruminant Research

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Dry matter, protein, energy and fibre intake by dairy heifers grazing a Rhodes grass (Chloris gayana) pasture

Cited by 5 publications

References 23 publications

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

Effects of CO₂ enrichment on growth partitioning of Chloris gayana in the arid environment of the UAE

Feed intake and digestibility by sheep of natural vegetation in the riparian land of lake Naivasha, Kenya

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Dry matter, protein, energy and fibre intake by dairy heifers grazing a Rhodes grass (Chloris gayana) pasture

Cited by 5 publications

References 23 publications

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

Supplementation strategies affect the feed intake and performance of grazing replacement heifers

Effects of CO2 enrichment on growth partitioning of Chloris gayana in the arid environment of the UAE

Feed intake and digestibility by sheep of natural vegetation in the riparian land of lake Naivasha, Kenya

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Effects of CO₂ enrichment on growth partitioning of Chloris gayana in the arid environment of the UAE