Voluntary intake and apparent digestibility in ponies offered alfalfa based forages ad libitum

2001 ◽  
Vol 2001 ◽  
pp. 90-90
Author(s):  
J. J. Hyslop ◽  
S. Calder
Keyword(s):  
Basal Diet ◽  
Apparent Digestibility ◽  
Protein Requirements ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Digestible Crude Protein ◽  
Ad Libitum ◽  
Voluntary Intake ◽  
The Uk

There is increased interest in using forages other than grass hay as the basal diet for equines in the UK. Whilst a range of short-chopped dehydrated alfalfa based forages may be used as alternatives to grass hay in equine diets, there is very little information available on their likely intake characteristics, apparent digestibilities or their nutritive values. The objectives of the current experiment were:- 1) to determine the voluntary feed intake (VFI) characteristics of three alfalfa based forages when offered ad libitum to ponies, 2) to determine the in vivo apparent digestibility, digestible energy (DE) and digestible crude protein (DCP) contents of these forages and 3) to compare the actual energy and protein intakes with theoretical energy and protein requirements.

Voluntary feed intake and apparent digestibility in vivo in ponies given ad libitum access to de-hydrated grass or hay harvested from the same grass crop

1998 ◽  
Vol 1998 ◽  
pp. 131-131
Author(s):  
J. J. Hyslop ◽  
A. Bayley ◽  
A. L. Tomlinson ◽  
D. Cuddeford
Keyword(s):  
Feed Intake ◽  
Chronic Obstructive ◽  
Apparent Digestibility ◽  
Obstructive Pulmonary Disease ◽  
Respiratory Problems ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Ad Libitum ◽  
The Uk

De-hydrated forages are often fed to equids in the UK in place of more traditional grass hay, particularly where individual animals are known to have a sensitivity to dusty, mouldy hay which may play a part inducing respiratory problems such as chronic obstructive pulmonary disease (COPD). One such alternative forage is short-chop de-hydrated grass. However, there is very little information available on voluntary feed intake (VFI), apparent digestibility and nutrient intake parameters when de-hydrated grass is offered to equids compared with traditional grass hay. This study examines the VFI and apparent digestibility in vivo of a short-chop de-hydrated grass compared with a traditional grass hay and determines their ability to meet the predicted energy and protein needs of mature ponies.Six mature Welsh-cross pony geldings with a mean liveweight (LW) of 281 kg (s.e.d. 0.89) were individually housed and offered ad libitum access to either short-chop de-hydrated grass (DHG) or traditional grass hay (HAY) plus 60 g/h/d minerals. The DHG and HAY were made from the same 2nd cut perennial ryegrass sward cut on the same day.

Voluntary feed intake and apparent digestibility in vivo in ponies given ad libitum access to de-hydrated grass or hay harvested from the same grass crop

1998 ◽  
Vol 1998 ◽  
pp. 131-131
Author(s):  
J. J. Hyslop ◽  
A. Bayley ◽  
A. L. Tomlinson ◽  
D. Cuddeford
Keyword(s):  
Feed Intake ◽  
Chronic Obstructive ◽  
Apparent Digestibility ◽  
Obstructive Pulmonary Disease ◽  
Respiratory Problems ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Ad Libitum ◽  
The Uk

De-hydrated forages are often fed to equids in the UK in place of more traditional grass hay, particularly where individual animals are known to have a sensitivity to dusty, mouldy hay which may play a part inducing respiratory problems such as chronic obstructive pulmonary disease (COPD). One such alternative forage is short-chop de-hydrated grass. However, there is very little information available on voluntary feed intake (VFI), apparent digestibility and nutrient intake parameters when de-hydrated grass is offered to equids compared with traditional grass hay. This study examines the VFI and apparent digestibility in vivo of a short-chop de-hydrated grass compared with a traditional grass hay and determines their ability to meet the predicted energy and protein needs of mature ponies.Six mature Welsh-cross pony geldings with a mean liveweight (LW) of 281 kg (s.e.d. 0.89) were individually housed and offered ad libitum access to either short-chop de-hydrated grass (DHG) or traditional grass hay (HAY) plus 60 g/h/d minerals. The DHG and HAY were made from the same 2nd cut perennial ryegrass sward cut on the same day.

Voluntary feed intake and apparent digestibility in vivo in ponies offered a mature threshed grass hay ad libitum

1998 ◽  
Vol 1998 ◽  
pp. 130-130 ◽  
Author(s):  
J. J. Hyslop ◽  
A. L. Tomlinson ◽  
A. Bayley ◽  
D. Cuddeford
Keyword(s):  
Feed Intake ◽  
Physical Work ◽  
Apparent Digestibility ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Feeding Regimes ◽  
Unrestricted Access ◽  
Ad Libitum ◽  
Restricted Feed Intake

Many mature, non-pregnant, non-lactating equids are often kept in circumstances where they are expected to perform only light physical work or activity eg: a childs pony. Consequently their maintenance energy and protein needs can often be met at very restricted feed intake levels. Conversely, when they are housed during the winter months it is believed desirable to manage such animals on unrestricted ad libitum feeding regimes in order to allow the animals to exhibit their natural feed intake pattern and consume forage on a little and often basis throughout the daily feeding period. However, ad libitum access to the diet may lead to such animals becoming excessively fat. These conflicting needs of low energy and protein requirement coupled with the desirability of unrestricted access to the diet could both be met, at least in part, if a low quality forage is available ad libitum. This study examines the voluntary feed intake and apparent digestibility in vivo of a mature threshed grass hay offered ad libitum and determines its ability to meet the predicted energy and protein needs of mature ponies.

Soaked unmolassed sugar beet pulp as a partial forage replacer in equine diets when ponies are offered grass hay ad libitum

1999 ◽  
Vol 1999 ◽  
pp. 140-140
Author(s):  
J. J. Hyslop ◽  
D. Cuddeford
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Latin Square ◽  
Sugar Beet Pulp ◽  
Apparent Digestibility ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Beet Pulp ◽  
Ad Libitum

There is increased interest in using sugar beet pulp (SBP) products as forage replacers in equine diets. Previous work (Hyslop et al 1998) has indicated that SBP products may suppress voluntary feed intake (VFI) in ponies when they are the major fibre source at between 550-700 g/kg total diet dry matter (DM). This study examines VFI and apparent digestibility in vivo where soaked unmolassed sugar beet pulp (USBP) was offered as a partial forage replacement to ponies receiving ad libitum grass hay.Four mature Welsh-cross pony geldings (280 kg LW s.e. 6.6) were individually housed and offered 0.86 kg/d of micronised barley (MB) and given ad libitum access to grass hay (HAY). In addition, ponies were offered either 0, 1, 2, or 3 kg/d USBP (U0, U1, U2 and U3 respectively) according to a 4 x 4 latin square changeover experimental design.

Voluntary feed intake and apparent digestibility in vivo in ponies offered a mature threshed grass hay ad libitum

1998 ◽  
Vol 1998 ◽  
pp. 130-130
Author(s):  
J. J. Hyslop ◽  
A. L. Tomlinson ◽  
A. Bayley ◽  
D. Cuddeford
Keyword(s):  
Feed Intake ◽  
Physical Work ◽  
Apparent Digestibility ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Feeding Regimes ◽  
Unrestricted Access ◽  
Ad Libitum ◽  
Restricted Feed Intake

Many mature, non-pregnant, non-lactating equids are often kept in circumstances where they are expected to perform only light physical work or activity eg: a childs pony. Consequently their maintenance energy and protein needs can often be met at very restricted feed intake levels. Conversely, when they are housed during the winter months it is believed desirable to manage such animals on unrestricted ad libitum feeding regimes in order to allow the animals to exhibit their natural feed intake pattern and consume forage on a little and often basis throughout the daily feeding period. However, ad libitum access to the diet may lead to such animals becoming excessively fat. These conflicting needs of low energy and protein requirement coupled with the desirability of unrestricted access to the diet could both be met, at least in part, if a low quality forage is available ad libitum. This study examines the voluntary feed intake and apparent digestibility in vivo of a mature threshed grass hay offered ad libitum and determines its ability to meet the predicted energy and protein needs of mature ponies.

The relations between the apparent digestibility of roughages in the rumen and lower gut of sheep, the volume of fluid in the rumen and voluntary feed intake

1967 ◽  
Vol 9 (4) ◽  
pp. 463-470 ◽  
Author(s):  
M. J. Ulyatt ◽  
K. L. Blaxter ◽  
I. McDonald
Keyword(s):  
Polyethylene Glycol ◽  
Feed Intake ◽  
Volume Of Fluid ◽  
Ratio Method ◽  
Apparent Digestibility ◽  
Voluntary Feed Intake ◽  
Ad Libitum ◽  
Voluntary Intake ◽  
Hind Gut ◽  
Volumes Of Distribution

Three sheep with permanent fistulas of the rumen were each given dried grass and two hays, each in three different amounts, and the apparent digesti-bility of the roughages in the rumen and distal to the rumen was determined. A lignin ratio method was used to measure digestibility.With increase in the amount of the poorest hay given, the proportion digested in the rumen fell and that distal to the rumen increased. With the second hay this effect was also noted but was not statistically significant. The voluntary intakes ofdry matter varied from 1·94 kg/day for the dried grass to 1·28 for the poorest hay. The volumes of distribution of polyethylene glycol in the rumen when feed was offered ad libitum, however, were the same, irrespective of the type of feed, at between 14·1 and 15·2 litres. These observations were confirmed at slaughter. The results support the hypothesis that sheep voluntarily consume roughages of different qualities to achieve constant fill of their rumens, and that little regulation of voluntary intake can be attributed to distension of the hind gut.

Fish-meal supplementation of grass silage given to young growing steers: effect on intake, apparent digestibility and live-weight gains

1992 ◽  
Vol 55 (3) ◽  
pp. 389-396 ◽  
Author(s):  
R. Sanderson ◽  
C. Thomas ◽  
A. B. McAllan
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Fish Meal ◽  
Live Weight ◽  
Apparent Digestibility ◽  
Grass Silage ◽  
Gross Energy ◽  
Ad Libitum ◽  
Voluntary Intake

AbstractSeventy-two, 4-month-old, British Friesian steers were used to investigate the effects of feeding a supplement of fish meal on the voluntary intake and live-weight gain by young growing cattle given a well preserved ryegrass silage. The silage was offered either alone or mixed with 50,100 or 150 g fish meal per kg silage dry matter (DM) and the diets were offered either ad libitum or intakes were restricted to 16, 19 or 22 g dietary DM per kg live weight (LW). Intakes were recorded daily, LW weekly and in vivo apparent digestibility over one 7-day period during the 132-day trial.For animals fed ad libitum, the absolute intake of dietary DM increased linearly with an increase in the level of fish-meal supplementation such that intake when the highest level of fish meal was given was significantly higher (P < 0·01) than when silage was given alone. However, DM intake per unit LW (approx. 24 g DM per kg LW) was not affected significantly (P > 0·05).Inclusion of fish meal in the diet did not affect the apparent digestibility of dietary DM, organic matter, acid-detergent or neutral-detergent fibre (NDF) although there was a trend for slightly higher (P > 0·05) gross energy apparent digestibility when fish meal was given. Increasing the level of feeding reduced NDF digestibility. The coefficients measured at the 22 g and ad libitum levels of intake were lower (P < 0·01 and P < 0·05 respectively) than that measured at the 16 g DM per kg LW level.Animals given silage alone to appetite achieved LW gains of 0·6 kg/day. LW gains increased linearly with increasing level of feeding (P < 0·001) and increasing level offish-meal supplementation (P < 0·001).

Ad libitum sugar beet pulp as the major fibre source in equine diets when ponies are offered a restricted amount of mature grass hay

1998 ◽  
Vol 1998 ◽  
pp. 132-132 ◽  
Author(s):  
J. J. Hyslop ◽  
S. Roy ◽  
D. Cuddeford
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Primary Site ◽  
Sugar Beet Pulp ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Beet Pulp ◽  
Ad Libitum ◽  
Pass Through

There is increased interest, in using sugar beet pulp (SBP) products in equine diets as a major source of fibre in place of traditional forages. It has been observed that voluntary feed intake (VFI) was lower when SBP products were included in the diet of dry sows compared to other fibrous foodstuffs (Brouns, et al 1995). Equids are similar to pigs in respect that fibrous feed components must pass through the stomach and small intestine before reaching the hindgut; the primary site of fibre fermentation. This study examines the VFI and apparent digestibility in vivo of two SBP based diets and determines their ability to meet the predicted energy and protein needs of mature ponies.Five mature Welsh-cross and three mature Shetland pony geldings with a mean liveweight (LW) of 219 kg (s.e.d. 2.2) were individually housed and offered 2 kg/d dry matter (DM) of a mature threshed grass hay (THAY), 60 g/h/d minerals and ad libitum access to either soaked molassed sugar beet pulp (MSBP) or soaked unmolassed sugar beet pulp (USBP).

Ad libitum sugar beet pulp as the major fibre source in equine diets when ponies are offered a restricted amount of mature grass hay

1998 ◽  
Vol 1998 ◽  
pp. 132-132
Author(s):  
J. J. Hyslop ◽  
S. Roy ◽  
D. Cuddeford
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Primary Site ◽  
Sugar Beet Pulp ◽  
Voluntary Feed Intake ◽  
Grass Hay ◽  
Beet Pulp ◽  
Ad Libitum ◽  
Pass Through

There is increased interest, in using sugar beet pulp (SBP) products in equine diets as a major source of fibre in place of traditional forages. It has been observed that voluntary feed intake (VFI) was lower when SBP products were included in the diet of dry sows compared to other fibrous foodstuffs (Brouns, et al 1995). Equids are similar to pigs in respect that fibrous feed components must pass through the stomach and small intestine before reaching the hindgut; the primary site of fibre fermentation. This study examines the VFI and apparent digestibility in vivo of two SBP based diets and determines their ability to meet the predicted energy and protein needs of mature ponies.Five mature Welsh-cross and three mature Shetland pony geldings with a mean liveweight (LW) of 219 kg (s.e.d. 2.2) were individually housed and offered 2 kg/d dry matter (DM) of a mature threshed grass hay (THAY), 60 g/h/d minerals and ad libitum access to either soaked molassed sugar beet pulp (MSBP) or soaked unmolassed sugar beet pulp (USBP).

The effect of the pea to wheat ratio and harvest date on the voluntary feed intake,in vivodigestibility and nitrogen retention of pea-wheat bi-crop silages by sheep

2000 ◽  
Vol 2000 ◽  
pp. 81-81 ◽  
Author(s):  
A.T. Adesogan ◽  
M.B. Salawu ◽  
E.R. Deaville
Keyword(s):  
Feed Intake ◽  
Nutritive Value ◽  
Nitrogen Retention ◽  
Harvest Date ◽  
Apparent Digestibility ◽  
N Retention ◽  
Stages Of Growth ◽  
Voluntary Feed Intake ◽  
Two Stages

Pea-wheat bi-crop silages were reported to have moderate nutritive value when the proportion of peas in the sward was less than 200 g/kg (Adesoganet al., 1999). These authors also suggested that improvements in the digestibility, intake and nitrogen (N) balance of the forages may result from increasing the proportion of peas in the sward. This experiment was designed to examine this theory by determining thein vivoapparent digestibility, N retention and voluntary feed intake (VFI) in sheep of pea-wheat bi-crop silages containing different ratios of peas to wheat and harvested at two stages of growth.

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