Forage and Feed Testing Programs – Problems and Opportunities

Coppock, C.E.; Woelfel, C. G.; Belyea, Ronald L.

doi:10.3168/jds.s0022-0302(81)82736-1

Cited by 20 publications

(6 citation statements)

References 9 publications

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“…The equations could, therefore, provide acceptable predictions of apparent digestibility of energy in pastures composed of similar species and under similar climatic conditions. The curvilinear model found in this work is in agreement with those authors (Minson et al 1964;Conrad 1966) who conclude that the digestibility does not drop linearly and, therefore, with those (Rohweder et al 1978;Jones et al 1980;Coppock et al 1981) who suggest a quadratic model.…”

Section: Discussionsupporting

confidence: 93%

Digestibility of energy and gross energy intake in fresh pastures

Osoro¹,

Cebrián²

1989

Grass and Forage Science

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Several experiments were performed in springstimmer over the period 1982-85 to study the relationships between digestibility of energy (DE), gross energy intake (GEl), acid detergent fibre (ADF) and dry matter (DM) content in pasture.Wether sheep in metabolism pens and fed ad libitum with daily-cut fresh pasture were used. Two plots with different botanical cotTiposiiion were used to provide herbage; one dominated by Lolium perenne and the other by Holcus lanatus.A high correlation (r= -0-91) was observed between DE and ADF. The prediction used a second-order degree polynomial.Gross energy intake and digestibility of energy were scarcely correlated (r = 0-50) when all cases as a whole were considered. Higher correlations between GEI and DE (r = 0-69) were obtained when only data from pastures where Holcus lanatus prevailed were considered, and still higher (/• = 0 91) in those pastures dominated by sown species with DE values lower than 70%.Herbage DM content had a large effect on GEI (r = 0 83) in the pastures dominated by perennial ryegrass with DE higher than 70%, the correlation between DE and GEI being low and negative (r=-036). It is possible, tberefore, to predict apparent digestibility of pasture energy from ADF. However, DE is closely related to GEI only in those pastures in which DE is lower than 70%, DM content being an important factor limiting t Presenl address and correspondence: Dr K. Osoro. Cenlro de Experimentacion Agraria, Apdo 13, 33300 Villaviciosa, Asturias, Spain. the intake of those fresh pastures dominated by jjerennial ryegrass when DE is above 70%. M A M J J A 1982 I I Dead matter AMJ J A S 1983 Clover M J J A 1984 Sown grosses J J A 1985 Figure I. Botanical composition of ofTered herbage in each experimental period.

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Section: Discussionsupporting

confidence: 93%

Digestibility of energy and gross energy intake in fresh pastures

Osoro¹,

Cebrián²

1989

Grass and Forage Science

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“…Total Mixed Rations (TMR) are a blend of forages and industrial by-products such as cereal by-products, distillery by-products, cereal hulls and oilseed meals with feed additives (Coppock et al 1981). It can be formulated to different animal groups i.e.…”

Section: Introductionmentioning

confidence: 99%

Nutritional and Keeping Quality of Total Mixed Ration Briquettes Produced for Lactating Dairy Cows

Karunanayaka

Nayananjalie

Somasiri

et al. 2021

SL J. Agric. Ecosys.

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This research aims to find out the feasibility of the formation of different total mixed ration (TMR) briquettes. Six recipes (TMR1, TMR2, TMR3, TMR4, TMR5, and TMR6) were prepared by blending different combinations of forages and concentrates to balance the nutrient requirements of lactating dairy cows. Each TMR briquette was wrapped and stored at room temperature for three months and tested at monthly intervals for nutrient composition and shelf life. A cost analysis was performed to determine economic feasibility. The crude protein, ether extract, crude fibre, acid detergent fibre, neutral detergent fibre, nitrogenfree extract and non-fibre carbohydrate contents were not significantly different among the treatments at preparation and after 3 months of storage. Calcium, phosphorous and magnesium contents of the treatments were significantly different among the treatments at preparation and after three months of storage.There was no risk associated with the potentially toxic metals (Cd, Pb and Hg) in the treatments during the storage. Yeast & mould counts, total plate counts and free fatty acid contents were in the acceptable range in all treatments during the entire storage period. Weights of the briquettes were significantly decreased during the storage; however, heights were not different among the treatments.TMR5 and TMR6 resulted lower production costs per kg. The majority of the nutritional, shelf life and physical parameters were not significantly different among the six TMR recipes tested. Thus, 5 and 6 TMR briquettes were selected as the best two potential recipes for further studies.

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“…Total Mixed Ration (TMR) can be described as a mixture of both roughages and processed ingredients, formulated and mixed to supply the animal's requirements, in a form that precludes selection. Coppock et al (1981) compared TMR feeding vs conventional feeding on dary cattle. Their results suggested, TMRl facilitates improvement of the rumen condition, specially keeping less rumen pH fluctuation and make favorable environment for rumen microbes than the conventional feeding.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Feeding of Total Mixed Ration vs Conventional Feeding on Weight Gain in Weaned Friesian Heifers under Tropical Environment

2010

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The study was carried out by using eighteen post weaned Friesian heifers (111.05 ± 9.2 day old and weighing 96.6 ± 8.4 kg) to determine the effect of Total Mixed Ration (TMR) feeding system based on Wet brewer's grain, Kikuyu grass, commercial pellet feed and commercial Mineral Mixture on daily weight gain in Friesian heifers. Nutritional composition of each feed ingredient was proximately analyzed and the ration was formulated according to the recommended nutritional requirement of a weaned dairy heifer (NRC 2001). One group was fed with TMR feeding system and the other group was fed with conventional feeding system as a control. Weight gain was measured weekly of each animal under each treatment. Throughout the experimental period (8 weeks), the average daily weight gain (ADG) was 0.55 kg/d in the treatment group and it was 0.33 kg/d in the control group. ADG was significantly different in between these two groups at p<0.009.

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Forage and Feed Testing Programs – Problems and Opportunities

Cited by 20 publications

References 9 publications

Digestibility of energy and gross energy intake in fresh pastures

Digestibility of energy and gross energy intake in fresh pastures

Nutritional and Keeping Quality of Total Mixed Ration Briquettes Produced for Lactating Dairy Cows

A Comparative Study on Feeding of Total Mixed Ration vs Conventional Feeding on Weight Gain in Weaned Friesian Heifers under Tropical Environment

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